From: afanfakh Date: Tue, 10 May 2016 14:20:31 +0000 (+0200) Subject: adding the ch3 X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/ThesisAhmed.git/commitdiff_plain/90c5d630943ca27e6ed19e347121d03ecaad5913 adding the ch3 --- diff --git a/CHAPITRE_03.tex b/CHAPITRE_03.tex index 82e7fd0..39eb9a8 100644 --- a/CHAPITRE_03.tex +++ b/CHAPITRE_03.tex @@ -1,8 +1,1724 @@ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% %% -%% CHAPTER 06 %% +%% CHAPTER 03 %% %% %% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \chapter{Energy Optimization of Heterogeneous Platforms} \label{ch3} +\newcommand{\CL}{\Xsub{C}{L}} +\newcommand{\Dist}{\mathit{Dist}} +\newcommand{\EdNew}{\Xsub{E}{dNew}} +\newcommand{\Eind}{\Xsub{E}{ind}} +\newcommand{\Enorm}{\Xsub{E}{Norm}} +\newcommand{\Eoriginal}{\Xsub{E}{Original}} +\newcommand{\Ereduced}{\Xsub{E}{Reduced}} +\newcommand{\Es}{\Xsub{E}{S}} +\newcommand{\Fdiff}[1][]{\Xsub{F}{diff}_{\!#1}} +\newcommand{\Fmax}[1][]{\Xsub{F}{max}_{\fxheight{#1}}} +\newcommand{\Fnew}{\Xsub{F}{new}} +\newcommand{\Ileak}{\Xsub{I}{leak}} +\newcommand{\Kdesign}{\Xsub{K}{design}} +\newcommand{\MaxDist}{\mathit{Max}\Dist} +\newcommand{\MinTcm}{\mathit{Min}\Tcm} +\newcommand{\Ntrans}{\Xsub{N}{trans}} +\newcommand{\Pd}[1][]{\Xsub{P}{d}_{\fxheight{#1}}} +\newcommand{\PdNew}{\Xsub{P}{dNew}} +\newcommand{\PdOld}{\Xsub{P}{dOld}} +\newcommand{\Pnorm}{\Xsub{P}{Norm}} +\newcommand{\Ps}[1][]{\Xsub{P}{s}_{\fxheight{#1}}} +\newcommand{\Scp}[1][]{\Xsub{S}{cp}_{#1}} +\newcommand{\Sopt}[1][]{\Xsub{S}{opt}_{#1}} +\newcommand{\Tcm}[1][]{\Xsub{T}{cm}_{\fxheight{#1}}} +\newcommand{\Tcp}[1][]{\Xsub{T}{cp}_{#1}} +\newcommand{\TcpOld}[1][]{\Xsub{T}{cpOld}_{#1}} +\newcommand{\Tnew}{\Xsub{T}{New}} +\newcommand{\Told}{\Xsub{T}{Old}} +\newcommand{\Pmax}[1][]{\Xsub{P}{max}_{\fxheight{#1}}} +\newcommand{\Pidle}[1][]{\Xsub{P}{idle}_{\fxheight{#1}}} + + +\renewcommand{\algorithmicdo}{\textbf{do}} +\renewcommand{\algorithmicwhile}{\textbf{while}} +\renewcommand{\algorithmicrequire}{\textbf{Require:}} +\renewcommand{\algorithmicensure}{\textbf{Ensure:}} +\renewcommand{\algorithmicend}{\textbf{end}} +\renewcommand{\algorithmicif}{\textbf{if}} +\renewcommand{\algorithmicthen}{\textbf{then}} + +\section{Introduction} +\label{ch3:intro} + + + Computing platforms are consuming more and more energy due to the increasing + number of nodes composing them. In the heterogeneous computing platform composed + of multiple computing nodes, each node is different in the computing power from + the others. Accordingly, the fast nodes have to waits to the slow ones to finish + their works. The resulting waiting times is called the idle times that are increased + proportionally to the increase in the heterogeneity between the computing nodes. + This leads to a big waste in the computing power and thus the energy consumed by the fast nodes. + To minimize the operating costs of these platforms many techniques have been used. + Dynamic voltage and frequency scaling (DVFS) is one of them. It reduces the frequency + of a CPU to lower its energy consumption. However, lowering the frequency of a CPU may + increase the execution time of an application running on that processor. Therefore, + the frequency that gives the best trade-off between the energy consumption and + the performance of an application must be selected. + + In this chapter, two new online frequency selecting algorithms for heterogeneous local + cluster (heterogeneous CPUs) and grid platform are presented. + They select the frequencies that tray to give the best + trade-off between energy saving and performance degradation, for each node + computing the synchronous message passing iterative application. These algorithms have a small + overhead and work without training or profiling. They use new energy models + for message passing iterative synchronous applications running on both the heterogeneous + local cluster and grid platform. The first proposed algorithm for a heterogeneous local + cluster is evaluated on the SimGrid simulator while running the NAS parallel + benchmarks class C. The experiments conducted over 8 heterogeneous nodes show that it reduces on + average the energy consumption by 29.8\% while limiting the performance degradation by 3.8\%. + The second proposed algorithm for a grid platform is evaluated on the Grid5000 testbed + platform while running the NAS parallel benchmarks class D. + Its experiments on 16 nodes, distributed on three clusters, show that it reduces on average the + energy consumption by 30\% while the performance is on average only degraded + by 3.2\%. + Finally, both the two algorithms are compared to an existing methods, the comparison + results show that they outperform the latter in term of energy and performance trade-off. + + +This chapter is organized as follows: Section~\ref{ch3:relwork} presents some +related works from other authors. Section~\ref{ch3:1} presents the performance and energy +models of synchronous message passing programs running over a heterogeneous local cluster. +It also describes the proposed frequencies selecting algorithm then the precision of the proposed algorithm is verified. +Section~\ref{ch3:2} presents the simulation results of applying the algorithm on the NAS parallel +benchmarks class C and executing them on a heterogeneous local cluster. It shows the results of running +three different power scenarios and comparing them. Moreover, it also shows the +comparison results between the proposed method and an existing method. +Section~\ref{ch3:3} shows the energy and performance models in addition to the frequencies +selecting algorithm of synchronous message passing programs running over a grid platform. +Section~\ref{ch3:4} presents the results of applying the algorithm on the +NAS parallel benchmarks class D and executing them on the Grid'5000 testbed. +It also evaluates the algorithm over multi-cores per node architectures and over three different power scenarios. Moreover, it shows the comparison results between the proposed method and an existing method. +Finally, in Section~\ref{ch3:concl} the chapter ends with a summary. + +\section{Related works} +\label{ch3:relwork} + +DVFS is a technique used in modern processors to scale down both the voltage and +the frequency of the CPU while computing, in order to reduce the energy +consumption of the processor. DVFS is also allowed in GPUs to achieve the same +goal. Reducing the frequency of a processor lowers its number of FLOPS and may +degrade the performance of the application running on that processor, especially +if it is compute bound. Therefore selecting the appropriate frequency for a +processor to satisfy some objectives, while taking into account all the +constraints, is not a trivial operation. Many researchers used different +strategies to tackle this problem. Some of them developed online methods that +compute the new frequency while executing the application, such +as~\cite{ref64,ref67}. +Others used offline methods that may need to run the application and profile +it before selecting the new frequency, such +as~\cite{ref58,ref91}. +The methods could be heuristics, exact or brute force methods that satisfy +varied objectives such as energy reduction or performance. They also could be +adapted to the execution's environment and the type of the application such as +sequential, parallel or distributed architecture, homogeneous or heterogeneous +platform, synchronous or asynchronous application, \dots{} + +In this chapter, we are interested in reducing energy for message passing +iterative synchronous applications running over heterogeneous platforms. Some +works have already been done for such platforms and they can be classified into +two types of heterogeneous platforms: +\begin{itemize} +\item the platform is composed of homogeneous GPUs and homogeneous CPUs. +\item the platform is only composed of heterogeneous CPUs. +\end{itemize} + +For the first type of platform, the computing intensive parallel tasks are +executed on the GPUs and the rest are executed on the CPUs. Luley et +al.~\cite{ref68}, proposed a +heterogeneous cluster composed of Intel Xeon CPUs and NVIDIA GPUs. Their main +goal was to maximize the energy efficiency of the platform during computation by +maximizing the number of FLOPS per watt generated. +In~\cite{ref69}, Kai Ma et al. developed a scheduling algorithm that distributes +workloads proportional to +the computing power of the nodes which could be a GPU or a CPU. All the tasks +must be completed at the same time. In~\cite{ref70}, +Rong et al. showed that a heterogeneous (GPUs and CPUs) cluster that enables +DVFS gave better energy and performance efficiency than other clusters only +composed of CPUs. + +The work presented in this chapter concerns the second type of platform, with +heterogeneous CPUs. Many methods were conceived to reduce the energy +consumption of this type of platform. Naveen et +al.~\cite{ref71} developed a method that +minimizes the value of $\mathit{energy}\times \mathit{delay}^2$ (the delay is +the sum of slack times that happen during synchronous communications) by +dynamically assigning new frequencies to the CPUs of the heterogeneous cluster. +Lizhe et al.~\cite{ref72} proposed an +algorithm that divides the executed tasks into two types: the critical and non +critical tasks. The algorithm scales down the frequency of non critical tasks +proportionally to their slack and communication times while limiting the +performance degradation percentage to less than 10\%. +In~\cite{ref73}, they developed a +heterogeneous cluster composed of two types of Intel and AMD processors. They +use a gradient method to predict the impact of DVFS operations on performance. +In~\cite{ref74} and +\cite{ref75}, the best +frequencies for a specified heterogeneous cluster are selected offline using +some heuristic. Chen et +al.~\cite{ref76} used a greedy dynamic +programming approach to minimize the power consumption of heterogeneous servers +while respecting given time constraints. This approach had considerable +overhead. In contrast to the above described works, the work of this chapter presents the +following contributions: +\begin{enumerate} +\item two new energy and two performance models for message passing iterative + synchronous applications running over a heterogeneous local cluster and grid platform. + All the models take into account communication and slack times. The models can predict the + required energy and the execution time of the application. + +\item two new online frequencies selecting algorithms for heterogeneous + local cluster and grid platform. The algorithms have a very small overhead and do not need any + training or profiling. They use a new optimization function which + simultaneously maximizes the performance and minimizes the energy consumption + of a message passing iterative synchronous application. +\end{enumerate} + +\section[The energy optimization of heterogeneous cluster]{The energy optimization of parallel iterative applications running over local heterogeneous +cluster} +\label{ch3:1} + +\subsection{The execution time of message passing distributed iterative + applications on a heterogeneous local cluster} +\label{ch3:1:1} +In this section, we are interested in reducing the energy consumption of message +passing distributed iterative synchronous applications running over +heterogeneous local cluster. A heterogeneous local cluster is defined as a collection of +heterogeneous computing nodes interconnected via a high speed homogeneous +network. Therefore, each node has different characteristics such as computing +power (FLOPS), energy consumption, CPU's frequency range, \dots{} but they all +have the same network bandwidth and latency. + +\begin{figure}[h!] + \centering + \includegraphics[scale=0.8]{fig/ch3/commtasks} + \caption{Parallel tasks on a heterogeneous platform} + \label{fig:task-heter} +\end{figure} + +The overall execution time of a distributed iterative synchronous application +over a heterogeneous local cluster consists of the sum of the computation time and +the communication time for every iteration on a node. However, due to the +heterogeneous computation power of the computing nodes, slack times may occur +when fast nodes have to wait, during synchronous communications, for the slower +nodes to finish their computations (see Figure~\ref{fig:task-heter}). Therefore, the +overall execution time of the program is the execution time of the slowest task +which has the highest computation time and no slack time. + +The frequency reduction process by applying DVFS operation can be expressed by the scaling +factor S which is the ratio between the maximum and the new frequency of a CPU +as in (\ref{eq:s}). +The execution time of a compute bound sequential program is linearly +proportional to the frequency scaling factor $S$. On the other hand, message +passing distributed applications consist of two parts: computation and +communication. The execution time of the computation part is linearly +proportional to the frequency scaling factor $S$ but the communication time is +not affected by the scaling factor because the processors involved remain idle +during the communications~\cite{ref53}. The +communication time for a task is the summation of periods of time that begin +with an MPI call for sending or receiving a message until the message is +synchronously sent or received. + +Since in a heterogeneous cluster each node has different characteristics, +especially different frequency gears, when applying DVFS operations on these +nodes, they may get different scaling factors represented by a scaling vector: +$(S_1, S_2,\dots, S_N)$ where $S_i$ is the scaling factor of processor $i$. To +be able to predict the execution time of message passing synchronous iterative +applications running over a heterogeneous local cluster, for different vectors of +scaling factors, the communication time and the computation time for all the +tasks must be measured during the first iteration before applying any DVFS +operation. Then the execution time for one iteration of the application with any +vector of scaling factors can be predicted using (\ref{eq:perf_heter}). +\begin{equation} + \label{eq:perf_heter} + \Tnew = \max_{i=1,2,\dots,N} ({\TcpOld[i]} \cdot S_{i}) + \min_{i=1,2,\dots,N} (\Tcm[i]) +\end{equation} + +where $\TcpOld[i]$ is the computation time of processor $i$ during the first +iteration. The model computes the maximum computation time with +scaling factor from each node added to the communication time of the slowest +node. It means only the communication time without any slack time is taken into +account. Therefore, the execution time of the iterative application is equal to +the execution time of one iteration as in (\ref{eq:perf_heter}) multiplied by the +number of iterations of that application. + +This prediction model is developed from the model to predict the execution time +of message passing distributed applications for homogeneous +architectures presented in chapter \ref{ch2} section \ref{ch2:3}. The execution time prediction model is +used in the method to optimize both the energy consumption and the performance +of iterative methods, which is presented in the following sections. + +\subsection{Energy model for heterogeneous local cluster} +\label{ch3:1:2} +In the chapter \ref{ch2}, the dynamic and the static energy consumption of the individual +processor is computed in \ref{eq:Edyn_new} and \ref{eq:Estatic_new} respectively. Then, +the total energy consumption of the individual processor is the sum of these two metrics. +Therefore, the overall energy consumption for the parallel tasks over parallel cluster +is the summation of the individual energies consumed for all processors. + +In the considered heterogeneous platform, each processor $i$ may have +different dynamic and static powers, noted as $\Pd[i]$ and $\Ps[i]$ +respectively. Therefore, even if the distributed message passing iterative +application is load balanced, the computation time of each CPU $i$ noted +$\Tcp[i]$ may be different and different frequency scaling factors may be +computed in order to decrease the overall energy consumption of the application +and reduce slack times. The communication time of a processor $i$ is noted as +$\Tcm[i]$ and could contain slack times when communicating with slower nodes, +see Figure~\ref{fig:task-heter}. Therefore, all nodes do not have equal +communication times. While the dynamic energy is computed according to the +frequency scaling factor and the dynamic power of each node as in +(\ref{eq:Edyn_new}), the static energy is computed as the sum of the execution time +of one iteration as in \ref{eq:perf_heter} multiplied by the static power of each processor. +The overall energy consumption of a message passing distributed application executed over a +heterogeneous cluster during one iteration is the summation of all dynamic and +static energies for each processor. It is computed as follows: +\begin{equation} + \label{eq:energy-heter} + E = \sum_{i=1}^{N} {(S_i^{-2} \cdot \Pd[i] \cdot \Tcp[i])} + + \sum_{i=1}^{N} (\Ps[i] \cdot (\max_{i=1,2,\dots,N} (\Tcp[i] \cdot S_{i}) + + { \min_{i=1,2,\dots,N} (\Tcm[i]) ))} +\end{equation} + +Reducing the frequencies of the processors according to the vector of scaling +factors $(S_1, S_2,\dots, S_N)$ may degrade the performance of the application +and thus, increase the static energy because the execution time is +increased~\cite{ref78}. The overall energy consumption +for the iterative application can be measured by measuring the energy +consumption for one iteration as in (\ref{eq:energy-heter}) multiplied by the number +of iterations of that application. + +\subsection{Optimization of both energy consumption and performance} +\label{ch3:1:3} +Using the lowest frequency for each processor does not necessarily give the most +energy efficient execution of an application. Indeed, even though the dynamic +power is reduced while scaling down the frequency of a processor, its +computation power is proportionally decreased. Hence, the execution time might +be drastically increased and during that time, dynamic and static powers are +being consumed. Therefore, it might cancel any gains achieved by scaling down +the frequency of all nodes to the minimum and the overall energy consumption of +the application might not be the optimal one. It is not trivial to select the +appropriate frequency scaling factor for each processor while considering the +characteristics of each processor (computation power, range of frequencies, +dynamic and static powers) and the task executed (computation/communication +ratio). The aim being to reduce the overall energy consumption and to avoid +increasing significantly the execution time. In last chapter +~\ref{ch2}, we proposed a method that selects the optimal +frequency scaling factor for a homogeneous cluster executing a message passing +iterative synchronous application while giving the best trade-off between the +energy consumption and the performance for such applications. In this section, we +are interested in heterogeneous clusters as described above. Due to the +heterogeneity of the processors, a vector of scaling factors should be selected +and it must give the best trade-off between energy consumption and performance. + +As described before, the relation between the energy consumption and the execution time for an +application is complex and nonlinear. Thus, to find the trade-off relation between the energy consumption in \ref{eq:energy-heter} and the performance in \ref{eq:perf_heter} of the iterative message passing applications, first we need to normalized both of them as follows: + + +\begin{equation} + \label{eq:enorm-heter} + \Enorm = \frac{\Ereduced}{\Eoriginal} + = \frac{ \sum_{i=1}^{N}{(S_i^{-2} \cdot \Pd[i] \cdot \Tcp[i])} + + \sum_{i=1}^{N} {(\Ps[i] \cdot \Tnew)}}{\sum_{i=1}^{N}{( \Pd[i] \cdot \Tcp[i])} + + \sum_{i=1}^{N} {(\Ps[i] \cdot \Told)}} +\end{equation} + + + +\begin{equation} + \label{eq:pnorm-heter} + \Pnorm = \frac{\Told}{\Tnew} + = \frac{\max_{i=1,2,\dots,N}{(\Tcp[i]+\Tcm[i])}} + { \max_{i=1,2,\dots,N} (\Tcp[i] \cdot S_{i}) + \min_{i=1,2,\dots,N} (\Tcm[i])} +\end{equation} + +Therefore, the vector of frequency scaling factors $S_1,S_2,\dots,S_N$ of the heterogeneous +cluster reduce both the energy and the execution time simultaneously. + +\begin{figure}[!t] + \centering + \includegraphics[width=.7\textwidth]{fig/ch3/heter} + \caption{The energy and performance relation in Heterogeneous cluster} + \label{fig:rel-heter} +\end{figure} + +Then, the objective function can be modeled in order to find the maximum +distance between the energy curve (\ref{eq:enorm-heter}) and the performance curve +(\ref{eq:pnorm-heter}) over all available sets of scaling factors of the heterogeneous +computing cluster. This represents the minimum energy consumption with minimum execution time (maximum +performance) at the same time, see Figure~\ref{fig:rel-heter}. Then the objective function has the following form: +\begin{equation} + \label{eq:max-heter} + \MaxDist = + \mathop{\max_{i=1,\dots F}}_{j=1,\dots,N} + (\overbrace{\Pnorm(S_{ij})}^{\text{Maximize}} - + \overbrace{\Enorm(S_{ij})}^{\text{Minimize}} ) +\end{equation} +where $N$ is the number of nodes and $F$ is the number of available frequencies +for each node. Then, the optimal set of scaling factors that satisfies +(\ref{eq:max-heter}) can be selected. + +\subsection[The scaling algorithm for heterogeneous cluster]{The scaling factors selection algorithm for heterogeneous cluster } +\label{ch3:1:4} + + +\begin{algorithm}[h!] + \begin{algorithmic}[1] + % \footnotesize + \Require ~ + %\begin{description} + \item[{$\Tcp[i]$}] array of all computation times for all nodes during one iteration and with highest frequency. + \item[{$\Tcm[i]$}] array of all communication times for all nodes during one iteration and with highest frequency. + \item[{$\Fmax[i]$}] array of the maximum frequencies for all nodes. + \item[{$\Pd[i]$}] array of the dynamic powers for all nodes. + \item[{$\Ps[i]$}] array of the static powers for all nodes. + \item[{$\Fdiff[i]$}] array of the differences between two successive frequencies for all nodes. + %\end{description} + \Ensure $\Sopt[1],\Sopt[2] \dots, \Sopt[N]$ is a vector of optimal scaling factors + + \State $\Scp[i] \gets \frac{\max_{i=1,2,\dots,N}(\Tcp[i])}{\Tcp[i]} $ + \State $F_{i} \gets \frac{\Fmax[i]}{\Scp[i]},~{i=1,2,\cdots,N}$ + \State Round the computed initial frequencies $F_i$ to the closest one available in each node. + \If{(not the first frequency)} + \State $F_i \gets F_i+\Fdiff[i],~i=1,\dots,N.$ + \EndIf + \State $\Told \gets \max_{i=1,\dots,N} (\Tcp[i]+\Tcm[i])$ + % \State $\Eoriginal \gets \sum_{i=1}^{N}{( \Pd[i] \cdot \Tcp[i])} +\sum_{i=1}^{N} {(\Ps[i] \cdot \Told)}$ + \State $\Eoriginal \gets \sum_{i=1}^{N}{( \Pd[i] \cdot \Tcp[i] + \Ps[i] \cdot \Told)}$ + \State $\Sopt[i] \gets 1,~i=1,\dots,N. $ + \State $\Dist \gets 0 $ + \While {(all nodes not reach their minimum frequency)} + \If{(not the last freq. \textbf{and} not the slowest node)} + \State $F_i \gets F_i - \Fdiff[i],~i=1,\dots,N.$ + \State $S_i \gets \frac{\Fmax[i]}{F_i},~i=1,\dots,N.$ + \EndIf + \State $\Tnew \gets \max_{i=1,2,\dots,N} ({\TcpOld[i]} \cdot S_{i}) + \min_{i=1,2,\dots,N} (\Tcm[i])$ +% \State $\Ereduced \gets \sum_{i=1}^{N}{(S_i^{-2} \cdot \Pd[i] \cdot \Tcp[i])} + \sum_{i=1}^{N} {(\Ps[i] \cdot \rlap{\Tnew)}} $ + \State $\Ereduced \gets \sum_{i=1}^{N} {(S_i^{-2} \cdot \Pd[i] \cdot \Tcp[i])} + + \sum_{i=1}^{N} (\Ps[i] \cdot (\max_{i=1,2,\dots,N} (\Tcp[i] \cdot S_{i}) + + { \min_{i=1,2,\dots,N} (\Tcm[i]) ))} $ + \State $\Pnorm \gets \frac{\Told}{\Tnew}$ + \State $\Enorm\gets \frac{\Ereduced}{\Eoriginal}$ + \If{$(\Pnorm - \Enorm > \Dist)$} + \State $\Sopt[i] \gets S_{i},~i=1,\dots,N. $ + \State $\Dist \gets \Pnorm - \Enorm$ + \EndIf + \EndWhile + \State Return $\Sopt[1],\Sopt[2],\dots,\Sopt[N]$ + \end{algorithmic} + \caption{Scaling factors selection algorithm for heterogeneous cluster} + \label{HSA} +\end{algorithm} + + + +\begin{algorithm}[h!] + \begin{algorithmic}[1] + % \footnotesize + \For {$k=1$ to \textit{some iterations}} + \State Computations section. + \State Communications section. + \If {$(k=1)$} + \State Gather all times of computation and communication from each node. + \State Call Algorithm \ref{HSA}. + \State Compute the new frequencies from the returned optimal scaling factors. + \State Set the new frequencies to nodes. + \EndIf + \EndFor + \end{algorithmic} + \caption{DVFS algorithm of heterogeneous platform} + \label{dvfs-heter} +\end{algorithm} + + + +In this section, Algorithm~\ref{HSA} is presented. It selects the frequency +scaling factors vector that gives the best trade-off between minimizing the +energy consumption and maximizing the performance of a message passing +synchronous iterative application executed on a heterogeneous local cluster. It works +online during the execution time of the iterative message passing program. It +uses information gathered during the first iteration such as the computation +time and the communication time in one iteration for each node. The algorithm is +executed after the first iteration and returns a vector of optimal frequency +scaling factors that satisfies the objective function (\ref{eq:max-heter}). The +program applies DVFS operations to change the frequencies of the CPUs according +to the computed scaling factors. This algorithm is called just once during the +execution of the program. Algorithm~\ref{dvfs-heter} shows where and when the proposed +scaling algorithm is called in the iterative MPI program. + +\begin{figure}[!t] + \centering + \includegraphics[scale=0.75]{fig/ch3/start_freq} + \caption{Selecting the initial frequencies in heterogeneous cluster} + \label{fig:st_freq-cluster} +\end{figure} + +The nodes in a heterogeneous cluster have different computing powers, thus +while executing message passing iterative synchronous applications, fast nodes +have to wait for the slower ones to finish their computations before being able +to synchronously communicate with them as in Figure~\ref{fig:task-heter}. These +periods are called idle or slack times. The algorithm takes into account this +problem and tries to reduce these slack times when selecting the frequency +scaling factors vector. At first, it selects initial frequency scaling factors +that increase the execution times of fast nodes and minimize the differences +between the computation times of fast and slow nodes. The value of the initial +frequency scaling factor for each node is inversely proportional to its +computation time that was gathered from the first iteration. These initial +frequency scaling factors are computed as a ratio between the computation time +of the slowest node and the computation time of the node $i$ as follows: +\begin{equation} + \label{eq:Scp} + \Scp[i] = \frac{\max_{i=1,2,\dots,N}(\Tcp[i])}{\Tcp[i]} +\end{equation} +Using the initial frequency scaling factors computed in (\ref{eq:Scp}), the +algorithm computes the initial frequencies for all nodes as a ratio between the +maximum frequency of node $i$ and the computation scaling factor $\Scp[i]$ as +follows: +\begin{equation} + \label{eq:Fint} + F_{i} = \frac{\Fmax[i]}{\Scp[i]},~{i=1,2,\dots,N} +\end{equation} +If the computed initial frequency for a node is not available in the gears of +that node, it is replaced by the nearest available frequency. In +Figure~\ref{fig:st_freq-cluster}, the nodes are sorted by their computing power in +ascending order and the frequencies of the faster nodes are scaled down +according to the computed initial frequency scaling factors. The resulting new +frequencies are highlighted in Figure~\ref{fig:st_freq-cluster}. This set of +frequencies can be considered as a higher bound for the search space of the +optimal vector of frequencies because selecting scaling factors higher +than the higher bound will not improve the performance of the application and it +will increase its overall energy consumption. Therefore the algorithm that +selects the frequency scaling factors starts the search method from these +initial frequencies and takes a downward search direction toward lower +frequencies. The algorithm iterates on all remaining frequencies, from the higher +bound until all nodes reach their minimum frequencies, to compute their overall +energy consumption and performance, and select the optimal frequency scaling +factors vector. At each iteration the algorithm determines the slowest node +according to the equation (\ref{eq:perf_heter}) and keeps its frequency unchanged, +while it lowers the frequency of all other nodes by one gear. The new overall +energy consumption and execution time are computed according to the new scaling +factors. The optimal set of frequency scaling factors is the set that gives the +highest distance according to the objective function (\ref{eq:max-heter}). + +Figure~\ref{fig:rel-heter} illustrate the normalized performance and +consumed energy for an application running on a +heterogeneous cluster while increasing the scaling factors. It can +be noticed that in a homogeneous cluster, as in the figure \ref{fig:rel} (a), +the search for the optimal scaling +factor should start from the maximum frequency because the performance and the +consumed energy decrease from the beginning of the plot. On the other hand, in +the heterogeneous cluster the performance is maintained at the beginning of the +plot even if the frequencies of the faster nodes decrease until the computing +power of scaled down nodes are lower than the slowest node. In other words, +until they reach the higher bound. It can also be noticed that the higher the +difference between the faster nodes and the slower nodes is, the bigger the +maximum distance between the energy curve and the performance curve is while the +scaling factors are varying which results in bigger energy savings. +Finally, in a homogeneous platform the energy consumption is increased when the scaling factor is very high. +Indeed, the dynamic energy saved by reducing the frequency of the processor is compensated by the significant increase of the execution time and thus the increased of the static energy. On the other hand, in a heterogeneous platform this is not the case. + +\subsection{The evaluation of the proposed algorithm} +\label{ch3:1:5} +The precision of the proposed algorithm mainly depends on the execution time +prediction model defined in (\ref{eq:perf_heter}) and the energy model computed by +(\ref{eq:energy-heter}). The energy model is also significantly dependent on the +execution time model because the static energy is linearly related to the +execution time and the dynamic energy is related to the computation time. So, +all the works presented in this chapter are based on the execution time model. To +verify this model, the predicted execution time was compared to the real +execution time over SimGrid/SMPI simulator, +v3.10~\cite{ref66}, for all the NAS +parallel benchmarks NPB v3.3 \cite{ref65}, running class B on +8 or 9 nodes. The comparison showed that the proposed execution time model is +very precise, the maximum normalized difference between the predicted execution +time and the real execution time is equal to 0.03 for all the NAS benchmarks. + +Since the proposed algorithm is not an exact method, it does not test all the +possible solutions (vectors of scaling factors) in the search space. To prove +its efficiency, it was compared on small instances to a brute force search +algorithm that tests all the possible solutions. The brute force algorithm was +applied to different NAS benchmarks classes with different number of nodes. The +solutions returned by the brute force algorithm and the proposed algorithm were +identical and the proposed algorithm was on average 10 times faster than the +brute force algorithm. It has a small execution time: for a heterogeneous +cluster composed of four different types of nodes having the characteristics +presented in Table~\ref{table:platform-cluster}, it takes on average 0.04 \textit{ms} for 4 +nodes and 0.15 \textit{ms} on average for 144 nodes to compute the best scaling +factors vector. The algorithm complexity is $O(F\cdot N)$, where $F$ is the +maximum number of available frequencies, and $N$ is the number of computing +nodes. The algorithm needs from 12 to 20 iterations to select the best vector of +frequency scaling factors that gives the results of the next sections. + +\begin{table}[h!] + \caption{Heterogeneous nodes characteristics} + % title of Table + \centering + \begin{tabular}{|*{7}{r|}} + \hline + Node & Simulated & Max & Min & Diff. & Dynamic & Static \\ + type & GFLOPS & Freq. & Freq. & Freq. & power & power \\ + & & GHz & GHz & GHz & & \\ + \hline + 1 & 40 & 2.50 & 1.20 & 0.100 & 20 W & 4 W \\ + \hline + 2 & 50 & 2.66 & 1.60 & 0.133 & 25 W & 5 W \\ + \hline + 3 & 60 & 2.90 & 1.20 & 0.100 & 30 W & 6 W \\ + \hline + 4 & 70 & 3.40 & 1.60 & 0.133 & 35 W & 7 W \\ + \hline + \end{tabular} + \label{table:platform-cluster} +\end{table} + +\section{Experimental results over heterogeneous local cluster} +\label{ch3:2} +To evaluate the efficiency and the overall energy consumption reduction of +Algorithm~\ref{HSA}, it was applied to the NAS parallel benchmarks NPB v3.3 which +is composed of synchronous message passing applications. The +experiments were executed on the simulator SimGrid/SMPI which offers easy tools +to create a heterogeneous local cluster and run message passing applications over it. +The heterogeneous cluster that was used in the experiments, had one core per +node because just one process was executed per node. The heterogeneous cluster +was composed of four types of nodes. Each type of nodes had different +characteristics such as the maximum CPU frequency, the number of available +frequencies and the computational power, see Table~\ref{table:platform-cluster}. The +characteristics of these different types of nodes are inspired from the +specifications of real Intel processors. The heterogeneous cluster had up to +144 nodes and had nodes from the four types in equal proportions, for example if +a benchmark was executed on 8 nodes, 2 nodes from each type were used. Since the +constructors of CPUs do not specify the dynamic and the static power of their +CPUs, for each type of node they were chosen proportionally to its computing +power (FLOPS). In the initial heterogeneous cluster, while computing with +highest frequency, each node consumed an amount of power proportional to its +computing power (which corresponds to 80\% of its dynamic power and the +remaining 20\% to the static power), the same assumption was made in chapter \ref{ch2} and +\cite{ref3}. Finally, These +nodes were connected via an Ethernet network with 1 \textit{Gbit/s} bandwidth. + + +\subsection{The experimental results of the scaling algorithm } +\label{ch3:2:1} + +The proposed algorithm was applied to the seven parallel NAS benchmarks (EP, CG, +MG, FT, BT, LU and SP). The benchmarks were executed with class C while being +run on different number of nodes, ranging from 8 to 128 or 144 nodes depending +on the benchmark being executed. +Indeed, the benchmarks CG, MG, LU, EP and FT had to be executed on 1, +2, 4, 8, 16, 32, 64, or 128 nodes. The other benchmarks such as BT and SP had +to be executed on 1, 4, 9, 16, 36, 64, or 144 nodes. + + + + \begin{table}[h!] + \caption{Running NAS benchmarks on 8 and 9 nodes } + % title of Table + \centering + \begin{tabular}{|*{7}{r|}} + \hline + \hspace{-2.2084pt}% + Program & Execution & Energy & Energy & Performance & Distance \\ + name & time/s & consumption/J & saving\% & degradation\% & \\ + \hline + CG & 36.11 & 3263.49 & 31.25 & 7.12 & 24.13 \\ + \hline + MG & 8.99 & 953.39 & 33.78 & 6.41 & 27.37 \\ + \hline + EP & 40.39 & 5652.81 & 27.04 & 0.49 & 26.55 \\ + \hline + LU & 218.79 & 36149.77 & 28.23 & 0.01 & 28.22 \\ + \hline + BT & 166.89 & 23207.42 & 32.32 & 7.89 & 24.43 \\ + \hline + SP & 104.73 & 18414.62 & 24.73 & 2.78 & 21.95 \\ + \hline + FT & 51.10 & 4913.26 & 31.02 & 2.54 & 28.48 \\ + \hline + \end{tabular} + \label{table:res_8n} + \end{table} + + \medskip + \begin{table}[h!] + \caption{Running NAS benchmarks on 16 nodes } + % title of Table + \centering + \begin{tabular}{|*{7}{r|}} + \hline + \hspace{-2.2084pt}% + Program & Execution & Energy & Energy & Performance & Distance \\ + name & time/s & consumption/J & saving\% & degradation\% & \\ + \hline + CG & 31.74 & 4373.90 & 26.29 & 9.57 & 16.72 \\ + \hline + MG & 5.71 & 1076.19 & 32.49 & 6.05 & 26.44 \\ + \hline + EP & 20.11 & 5638.49 & 26.85 & 0.56 & 26.29 \\ + \hline + LU & 144.13 & 42529.06 & 28.80 & 6.56 & 22.24 \\ + \hline + BT & 97.29 & 22813.86 & 34.95 & 5.80 & 29.15 \\ + \hline + SP & 66.49 & 20821.67 & 22.49 & 3.82 & 18.67 \\ + \hline + FT & 37.01 & 5505.60 & 31.59 & 6.48 & 25.11 \\ + \hline + \end{tabular} + \label{table:res_16n} + \end{table} + + \medskip + \begin{table}[h!] + \caption{Running NAS benchmarks on 32 and 36 nodes } + % title of Table + \centering + \begin{tabular}{|*{7}{r|}} + \hline + \hspace{-2.2084pt}% + Program & Execution & Energy & Energy & Performance & Distance \\ + name & time/s & consumption/J & saving\% & degradation\% & \\ + \hline + CG & 32.35 & 6704.21 & 16.15 & 5.30 & 10.85 \\ + \hline + MG & 4.30 & 1355.58 & 28.93 & 8.85 & 20.08 \\ + \hline + EP & 9.96 & 5519.68 & 26.98 & 0.02 & 26.96 \\ + \hline + LU & 99.93 & 67463.43 & 23.60 & 2.45 & 21.15 \\ + \hline + BT & 48.61 & 23796.97 & 34.62 & 5.83 & 28.79 \\ + \hline + SP & 46.01 & 27007.43 & 22.72 & 3.45 & 19.27 \\ + \hline + FT & 28.06 & 7142.69 & 23.09 & 2.90 & 20.19 \\ + \hline + \end{tabular} + \label{table:res_32n} + \end{table} + + \medskip + \begin{table}[h!] + \caption{Running NAS benchmarks on 64 nodes } + % title of Table + \centering + \begin{tabular}{|*{7}{r|}} + \hline + \hspace{-2.2084pt}% + Program & Execution & Energy & Energy & Performance & Distance \\ + name & time/s & consumption/J & saving\% & degradation\% & \\ + \hline + CG & 46.65 & 17521.83 & 8.13 & 1.68 & 6.45 \\ + \hline + MG & 3.27 & 1534.70 & 29.27 & 14.35 & 14.92 \\ + \hline + EP & 5.05 & 5471.11 & 27.12 & 3.11 & 24.01 \\ + \hline + LU & 73.92 & 101339.16 & 21.96 & 3.67 & 18.29 \\ + \hline + BT & 39.99 & 27166.71 & 32.02 & 12.28 & 19.74 \\ + \hline + SP & 52.00 & 49099.28 & 24.84 & 0.03 & 24.81 \\ + \hline + FT & 25.97 & 10416.82 & 20.15 & 4.87 & 15.28 \\ + \hline + \end{tabular} + \label{table:res_64n} + \end{table} + + \medskip \begin{table}[h!] + \caption{Running NAS benchmarks on 128 and 144 nodes } + % title of Table + \centering + \begin{tabular}{|*{7}{r|}} + \hline + \hspace{-2.2084pt}% + Program & Execution & Energy & Energy & Performance & Distance \\ + name & time/s & consumption/J & saving\% & degradation\% & \\ + \hline + CG & 56.92 & 41163.36 & 4.00 & 1.10 & 2.90 \\ + \hline + MG & 3.55 & 2843.33 & 18.77 & 10.38 & 8.39 \\ + \hline + EP & 2.67 & 5669.66 & 27.09 & 0.03 & 27.06 \\ + \hline + LU & 51.23 & 144471.90 & 16.67 & 2.36 & 14.31 \\ + \hline + BT & 37.96 & 44243.82 & 23.18 & 1.28 & 21.90 \\ + \hline + SP & 64.53 & 115409.71 & 26.72 & 0.05 & 26.67 \\ + \hline + FT & 25.51 & 18808.72 & 12.85 & 2.84 & 10.01 \\ + \hline + \end{tabular} + \label{table:res_128n} +\end{table} + +\begin{figure}[h!] + \centering + \centering + \includegraphics[width=.7\textwidth]{fig/ch3/energy}\\~ ~ ~ ~ ~(a) \\ + + \includegraphics[width=.7\textwidth]{fig/ch3/per_deg}\\~ ~ ~ ~ ~(b) + \caption{NAS benchmarks running with a different number of nodes (a) the energy saving and + (b) the performance degradation } + \label{fig:res} +\end{figure} + +The overall energy consumption was computed for each instance according to the +energy consumption model (\ref{eq:energy-heter}), with and without applying the +algorithm. The execution time was also measured for all these experiments. Then, +the energy saving and performance degradation percentages were computed for each +instance. The results are presented in Tables +\ref{table:res_8n}, \ref{table:res_16n}, \ref{table:res_32n}, +\ref{table:res_64n} and \ref{table:res_128n}. All these results are the average +values from many experiments for energy savings and performance degradation. +The tables show the experimental results for running the NAS parallel benchmarks +on different numbers of nodes. The experiments show that the algorithm +significantly reduces the energy consumption (up to 34\%) and tries to +limit the performance degradation. They also show that the energy saving +percentage decreases when the number of computing nodes increases. This +reduction is due to the increase of the communication times compared to the +execution times when the benchmarks are run over a higher number of nodes. +Indeed, the benchmarks with the same class, C, are executed on different numbers +of nodes, so the computation required for each iteration is divided by the +number of computing nodes. On the other hand, more communications are required +when increasing the number of nodes so the static energy increases linearly +according to the communication time and the dynamic power is less relevant in +the overall energy consumption. Therefore, reducing the frequency with +Algorithm~\ref{HSA} is less effective in reducing the overall energy savings. It +can also be noticed that for the benchmarks EP and SP that contain little or no +communications, the energy savings are not significantly affected by the high +number of nodes. No experiments were conducted using bigger classes than D, +because they require a lot of memory (more than 64 \textit{CB}) when being executed +by the simulator on one machine. The maximum distance between the normalized +energy curve and the normalized performance for each instance is also shown in +the result tables. It decrease in the same way as the energy saving percentage. +The tables also show that the performance degradation percentage is not +significantly increased when the number of computing nodes is increased because +the computation times are small when compared to the communication times. + +Figure~\ref{fig:res} (a) and (b) present the energy saving and +performance degradation respectively for all the benchmarks according to the +number of used nodes. As shown in the first plot, the energy saving percentages +of the benchmarks MG, LU, BT and FT decrease linearly when the number of nodes +increase. While for the EP and SP benchmarks, the energy saving percentage is +not affected by the increase of the number of computing nodes, because in these +benchmarks there are little or no communications. Finally, the energy saving of +the CG benchmark significantly decreases when the number of nodes increase +because this benchmark has more communications than the others. The second plot +shows that the performance degradation percentages of most of the benchmarks +decrease when they run on a big number of nodes because they spend more time +communicating than computing, thus, scaling down the frequencies of some nodes +has less effect on the performance. + +\subsection{The results for different power consumption scenarios} +\label{ch3:2:2} + +The results of the previous section were obtained while using processors that +consume during computation an overall power which is 80\% composed of +dynamic power and of 20\% of static power. In this section, these ratios +are changed and two new power scenarios are considered in order to evaluate how +the proposed algorithm adapts itself according to the static and dynamic power +values. The two new power scenarios are the following: + +\begin{itemize} +\item 70\% of dynamic power and 30\% of static power +\item 90\% of dynamic power and 10\% of static power +\end{itemize} + +The NAS parallel benchmarks were executed again over processors that follow the +new power scenarios. The class C of each benchmark was run over 8 or 9 nodes +and the results are presented in Tables~\ref{table:res_s1} and +\ref{table:res_s2}. These tables show that the energy saving percentage of the +70\%-30\% scenario is smaller for all benchmarks compared to the +energy saving of the 90\%-10\% scenario. Indeed, in the latter +more dynamic power is consumed when nodes are running on their maximum +frequencies, thus, scaling down the frequency of the nodes results in higher +energy savings than in the 70\%-30\% scenario. On the other hand, +the performance degradation percentage is smaller in the 70\%-30\% +scenario compared to the 90\%-\%10 scenario. This is due to the +higher static power percentage in the first scenario which makes it more +relevant in the overall consumed energy. Indeed, the static energy is related +to the execution time and if the performance is degraded the amount of consumed +static energy directly increases. Therefore, the proposed algorithm does not +really significantly scale down much the frequencies of the nodes in order to +limit the increase of the execution time and thus limiting the effect of the +consumed static energy. + +Both new power scenarios are compared to the old one in +Figure~\ref{fig:powers-heter} (a). It shows the average of the performance degradation, +the energy saving and the distances for all NAS benchmarks of class C running on +8 or 9 nodes. The comparison shows that the energy saving ratio is proportional +to the dynamic power ratio: it is increased when applying the +90\%-10\% scenario because at maximum frequency the dynamic energy +is the most relevant in the overall consumed energy and can be reduced by +lowering the frequency of some processors. On the other hand, the energy saving +decreases when the 70\%-30\% scenario is used because the dynamic +energy is less relevant in the overall consumed energy and lowering the +frequency does not return big energy savings. Moreover, the average of the +performance degradation is decreased when using a higher ratio for static power +(e.g. 70\%-30\% scenario and 80\%-20\% scenario). Since the proposed +algorithm optimizes the energy consumption when +using a higher ratio for dynamic power the algorithm selects bigger frequency +scaling factors that result in more energy saving but less performance, for +example see Figure~\ref{fig:powers-heter} (b). The opposite happens when using a +higher ratio for static power, the algorithm proportionally selects smaller +scaling values which result in less energy saving but also less performance +degradation. + +\begin{table}[!t] + \caption{The results of the 70\%-30\% power scenario} + % title of Table + \centering + \begin{tabular}{|*{6}{r|}} + \hline + Program & Energy & Energy & Performance & Distance \\ + name & consumption/J & saving\% & degradation\% & \\ + \hline + CG & 4144.21 & 22.42 & 7.72 & 14.70 \\ + \hline + MG & 1133.23 & 24.50 & 5.34 & 19.16 \\ + \hline + EP & 6170.30 & 16.19 & 0.02 & 16.17 \\ + \hline + LU & 39477.28 & 20.43 & 0.07 & 20.36 \\ + \hline + BT & 26169.55 & 25.34 & 6.62 & 18.71 \\ + \hline + SP & 19620.09 & 19.32 & 3.66 & 15.66 \\ + \hline + FT & 6094.07 & 23.17 & 0.36 & 22.81 \\ + \hline + \end{tabular} + \label{table:res_s1} +\end{table} + +\begin{table}[!t] + \caption{The results of the 90\%-10\% power scenario} + % title of Table + \centering + \begin{tabular}{|*{6}{r|}} + \hline + Program & Energy & Energy & Performance & Distance \\ + name & consumption/J & saving\% & degradation\% & \\ + \hline + CG & 2812.38 & 36.36 & 6.80 & 29.56 \\ + \hline + MG & 825.43 & 38.35 & 6.41 & 31.94 \\ + \hline + EP & 5281.62 & 35.02 & 2.68 & 32.34 \\ + \hline + LU & 31611.28 & 39.15 & 3.51 & 35.64 \\ + \hline + BT & 21296.46 & 36.70 & 6.60 & 30.10 \\ + \hline + SP & 15183.42 & 35.19 & 11.76 & 23.43 \\ + \hline + FT & 3856.54 & 40.80 & 5.67 & 35.13 \\ + \hline + \end{tabular} + \label{table:res_s2} +\end{table} + +\begin{table}[!t] + \caption{Comparing the proposed algorithm} + \centering + \begin{tabular}{|*{7}{r|}} + \hline + Program & \multicolumn{2}{c|}{Energy saving \%} + & \multicolumn{2}{c|}{Perf. degradation \%} + & \multicolumn{2}{c|}{Distance} \\ + \cline{2-7} + name & EDP & MaxDist & EDP & MaxDist & EDP & MaxDist \\ + \hline + CG & 27.58 & 31.25 & 5.82 & 7.12 & 21.76 & 24.13 \\ + \hline + MG & 29.49 & 33.78 & 3.74 & 6.41 & 25.75 & 27.37 \\ + \hline + LU & 19.55 & 28.33 & 0.00 & 0.01 & 19.55 & 28.22 \\ + \hline + EP & 28.40 & 27.04 & 4.29 & 0.49 & 24.11 & 26.55 \\ + \hline + BT & 27.68 & 32.32 & 6.45 & 7.87 & 21.23 & 24.43 \\ + \hline + SP & 20.52 & 24.73 & 5.21 & 2.78 & 15.31 & 21.95 \\ + \hline + FT & 27.03 & 31.02 & 2.75 & 2.54 & 24.28 & 28.48 \\ + \hline + \end{tabular} + \label{table:compare_EDP} +\end{table} + +\begin{figure}[h!] + \centering + + \includegraphics[width=.75\textwidth]{fig/ch3/sen_comp}\\~ ~ ~ ~ ~ (a)\\ + + \includegraphics[width=.75\textwidth]{fig/ch3/three_scenarios}\\~ ~ ~ ~ ~ (b) + + \caption{(a) Comparison the results of the three power scenarios and + (b) Comparison the selected frequency scaling factors of MG benchmark class C running on 8 nodes} + \label{fig:powers-heter} +\end{figure} + +\begin{figure}[h!] + \centering + \includegraphics[scale=0.85]{fig/ch3/compare_EDP.pdf} + \caption{Trade-off comparison for NAS benchmarks class C} + \label{fig:compare_EDP} +\end{figure} + + +\subsection{The comparison of the proposed scaling algorithm } +\label{ch3:2:3} +In this section, the scaling factors selection algorithm, called MaxDist, is +compared to Spiliopoulos et al. algorithm +\cite{ref67}, called EDP. They developed a +green governor that regularly applies an online frequency selecting algorithm to +reduce the energy consumed by a multicore architecture without degrading much +its performance. The algorithm selects the frequencies that minimize the energy +and delay products, $\mathit{EDP}=\mathit{energy}\times \mathit{delay}$ using +the predicted overall energy consumption and execution time delay for each +frequency. To fairly compare both algorithms, the same energy and execution +time models, equations (\ref{eq:energy-heter}) and (\ref{eq:perf_heter}), were used for both +algorithms to predict the energy consumption and the execution times. Also +Spiliopoulos et al. algorithm was adapted to start the search from the initial +frequencies computed using the equation (\ref{eq:Fint}). The resulting algorithm +is an exhaustive search algorithm that minimizes the EDP and has the initial +frequencies values as an upper bound. + +Both algorithms were applied to the parallel NAS benchmarks to compare their +efficiency. Table~\ref{table:compare_EDP} presents the results of comparing the +execution times and the energy consumption for both versions of the NAS +benchmarks while running the class C of each benchmark over 8 or 9 heterogeneous +nodes. The results show that our algorithm provides better energy savings than +Spiliopoulos et al. algorithm, on average it results in 29.76\% energy +saving while their algorithm returns just 25.75\%. The average of +performance degradation percentage is approximately the same for both +algorithms, about 4\%. + +For all benchmarks, our algorithm outperforms Spiliopoulos et al. algorithm in +terms of energy and performance trade-off, see Figure~\ref{fig:compare_EDP}, +because it maximizes the distance between the energy saving and the performance +degradation values while giving the same weight for both metrics. + +\section[The energy optimization of grid]{The energy optimization of parallel iterative applications running over grid} +\label{ch3:3} + +\subsection{The energy and performance models of grid platform} +\label{ch3:3:1} +In this section, we are interested in reducing the energy consumption of message +passing distributed iterative synchronous applications running over +heterogeneous grid platforms. A heterogeneous grid platform could be defined as a collection of +heterogeneous computing clusters interconnected via a long distance network which has lower bandwidth +and higher latency than the local networks of the clusters. Each computing cluster in the grid is composed of homogeneous nodes that are connected together via a high speed network. Therefore, each cluster has different characteristics such as computing power (FLOPS), energy consumption, CPU's frequency range, network bandwidth and latency. + +Since in a heterogeneous grid each cluster has different characteristics, +especially different frequency gears, when applying DVFS operations on the nodes +of these clusters, they may get different scaling factors represented by a scaling vector: +$(S_{11}, S_{12},\dots, S_{NM})$ where $S_{ij}$ is the scaling factor of processor $j$ in cluster $i$ . To +be able to predict the execution time of message passing synchronous iterative +applications running over a heterogeneous grid, for different vectors of +scaling factors, the communication time and the computation time for all the +tasks must be measured during the first iteration before applying any DVFS +operation. Then the execution time for one iteration of the application with any +vector of scaling factors can be predicted using (\ref{eq:perf-grid}). +% +\begin{equation} + \label{eq:perf-grid} + \Tnew = \mathop{\max_{i=1,\dots N}}_{j=1,\dots,M}({\TcpOld[ij]} \cdot S_{ij}) + +\mathop{\min_{j=1,\dots,M}} (\Tcm[hj]) +\end{equation} +% +where $N$ is the number of clusters in the grid, $M$ is the number of nodes in +each cluster, $\TcpOld[ij]$ is the computation time of processor $j$ in the cluster $i$ +and $\Tcm[hj]$ is the communication time of processor $j$ in the cluster $h$ during the +first iteration. The execution time for one iteration is equal to the sum of the maximum computation time for all nodes with the new scaling factors +and the slowest communication time without slack time during one iteration. +The latter is equal to the communication time of the slowest node in the slowest cluster $h$. +It means that only the communication time without any slack time is taken into account. +Therefore, the execution time of the iterative application is equal to +the execution time of one iteration as in (\ref{eq:perf-grid}) multiplied by the +number of iterations of that application. + + +In the considered heterogeneous grid platform, each node $j$ in cluster $i$ may have +different dynamic and static powers from the nodes of the other clusters, +noted as $\Pd[ij]$ and $\Ps[ij]$ respectively. Therefore, even if the distributed +message passing iterative application is load balanced, the computation time of each CPU $j$ +in cluster $i$ noted $\Tcp[ij]$ may be different and different frequency scaling factors may be +computed in order to decrease the overall energy consumption of the application +and reduce slack times. The communication time of a processor $j$ in cluster $i$ is noted as +$\Tcm[ij]$ and could contain slack times when communicating with slower nodes, +see Figure~\ref{fig:task-heter}. Therefore, all nodes do not have equal +communication times. While the dynamic energy is computed according to the +frequency scaling factor and the dynamic power of each node as in +(\ref{eq:Edyn}), the static energy is computed as the sum of the execution time +of one iteration multiplied by the static power of each processor. The overall +energy consumption of a message passing distributed application executed over a +heterogeneous grid platform during one iteration is the summation of all dynamic and +static energies for $M$ processors in $N$ clusters. It is computed as follows: +\begin{equation} + \label{eq:energy-grid} + E = \sum_{i=1}^{N} \sum_{i=1}^{M} {(S_{ij}^{-2} \cdot \Pd[ij] \cdot \Tcp[ij])} + + \sum_{i=1}^{N} \sum_{j=1}^{M} (\Ps[ij] \cdot + (\mathop{\max_{i=1,\dots N}}_{j=1,\dots,M}({\Tcp[ij]} \cdot S_{ij}) + +\mathop{\min_{j=1,\dots M}} (\Tcm[hj]) )) +\end{equation} + + +To optimize both of the energy model \ref{eq:energy-grid} and the performance model\ref{eq:perf-grid}, +they must normalizes respectively as in \ref{eq:enorm-heter} and \ref{eq:pnorm-heter}. +While the original energy consumption is the consumed energy with +maximum frequency for all nodes computes as follows: + +\begin{equation} + \label{eq:eorginal-grid} + \Eoriginal = \sum_{i=1}^{N} \sum_{j=1}^{M} ( \Pd[ij] \cdot \Tcp[ij]) + + \mathop{\sum_{i=1}^{N}} \sum_{j=1}^{M} (\Ps[ij] \cdot \Told) +\end{equation} + +By the same way, the old execution time with maximum frequency for all nodes computes as follows: + +\begin{equation} + \label{eq:told-grid} + \Told = \mathop{\max_{i=1,2,\dots,N}}_{j=1,2,\dots,M} (\Tcp[ij]+\Tcm[ij]) +\end{equation} +Therefore, the objective function can be modeled in order to find the maximum +distance between the normalized energy curve and the normalized performance curve +over all available sets of scaling factors as follows: + + \begin{equation} + \label{eq:max-grid} + \MaxDist = +\mathop{ \mathop{\max_{i=1,\dots N}}_{j=1,\dots,M}}_{k=1,\dots,F} + (\overbrace{\Pnorm(S_{ijk})}^{\text{Maximize}} - + \overbrace{\Enorm(S_{ijk})}^{\text{Minimize}} ) +\end{equation} + +where $N$ is the number of clusters, $M$ is the number of nodes in each cluster and +$F$ is the number of available frequencies for each node. Then, the optimal set +of scaling factors that satisfies (\ref{eq:max-grid}) can be selected. + +\subsection{The scaling factors selection algorithm for a grid } +\label{ch3:3:2} + +\begin{algorithm} +\setstretch{1} + \begin{algorithmic}[1] + % \footnotesize + + \Require ~ + + \item [{$N$}] number of clusters in the grid. + \item [{$M$}] number of nodes in each cluster. + \item[{$\Tcp[ij]$}] array of all computation times for all nodes during one iteration and with the highest frequency. + \item[{$\Tcm[ij]$}] array of all communication times for all nodes during one iteration and with the highest frequency. + \item[{$\Fmax[ij]$}] array of the maximum frequencies for all nodes. + \item[{$\Pd[ij]$}] array of the dynamic powers for all nodes. + \item[{$\Ps[ij]$}] array of the static powers for all nodes. + \item[{$\Fdiff[ij]$}] array of the differences between two successive frequencies for all nodes. + + \Ensure $\Sopt[11],\Sopt[12] \dots, \Sopt[NM_i]$, a vector of scaling factors that gives the optimal trade-off between energy consumption and execution time + + \State $\Scp[ij] \gets \frac{ \mathop{\max\limits_{i=1,\dots N}}\limits_{j=1,\dots,M}(\Tcp[ij])} {\Tcp[ij]} $ + \State $F_{ij} \gets \frac{\Fmax[ij]}{\Scp[i]},~{i=1,2,\cdots,N},~{j=1,2,\dots,M_i}.$ + \State Round the computed initial frequencies $F_i$ to the closest available frequency for each node. + \If{(not the first frequency)} + \State $F_{ij} \gets F_{ij}+\Fdiff[ij],~i=1,\dots,N,~{j=1,\dots,M_i}.$ + \EndIf + \State $\Told \gets \mathop{\max\limits_{i=1,2,\dots,N}}\limits_{j=1,2,\dots,M} (\Tcp[ij]+\Tcm[ij]) $ + \State $\Eoriginal \gets \sum_{i=1}^{N} \sum_{j=1}^{M} ( \Pd[ij] \cdot \Tcp[ij]) + + \mathop{\sum_{i=1}^{N}} \sum_{j=1}^{M} (\Ps[ij] \cdot \Told) $ + \State $\Sopt[ij] \gets 1,~i=1,\dots,N,~{j=1,\dots,M_i}. $ + \State $\Dist \gets 0 $ + \While {(all nodes have not reached their minimum frequency \textbf{or} $\Pnorm - \Enorm < 0 $)} + \If{(not the last freq. \textbf{and} not the slowest node)} + \State $F_{ij} \gets F_{ij} - \Fdiff[ij],~{i=1,\dots,N},~{j=1,\dots,M_i}$. + \State $S_{ij} \gets \frac{\Fmax[ij]}{F_{ij}},~{i=1,\dots,N},~{j=1,\dots,M_i}.$ + \EndIf + \State $\Tnew \gets \mathop{\max\limits_{i=1,\dots N}}\limits_{j=1,\dots,M}({\TcpOld[ij]} + \cdot S_{ij}) +\mathop{\min\limits_{j=1,\dots,M}} (\Tcm[hj]) $. + \State $\Ereduced \gets \sum\limits_{i=1}^{N} \sum\limits_{i=1}^{M} {(S_{ij}^{-2} \cdot \Pd[ij] + \cdot \Tcp[ij])} + \sum\limits_{i=1}^{N} \sum\limits_{j=1}^{M} (\Ps[ij] \cdot + (\mathop{\max\limits_{i=1,\dots N}}\limits_{j=1,\dots,M}({\Tcp[ij]} \cdot S_{ij}) + +\mathop{\min\limits_{j=1,\dots M}} (\Tcm[hj]) ))$ + \State $\Pnorm \gets \frac{\Told}{\Tnew}$ + + \State $\Enorm \gets \frac{\Ereduced}{\Eoriginal}$ + \If{$(\Pnorm - \Enorm > \Dist)$} + \State $\Sopt[ij] \gets S_{ij},~i=1,\dots,N,~j=1,\dots,M_i. $ + \State $\Dist \gets \Pnorm - \Enorm$ + \EndIf + \EndWhile + \State Return $\Sopt[11],\Sopt[12],\dots,\Sopt[NM_i]$ + \end{algorithmic} + \caption{Scaling factors selection algorithm for grid} + \label{HSA-grid} +\end{algorithm} + +\begin{figure}[!t] + \centering + \includegraphics[scale=0.7]{fig/ch3/init_freq} + \caption{Selecting the initial frequencies in grid} + \label{fig:st_freq-grid} +\end{figure} + +\begin{figure}[!t] + \centering + \includegraphics[width=.7\textwidth]{fig/ch3/heter2} + \caption{The energy and performance relation in grid} + \label{fig:rel-grid} +\end{figure} + + +In this section, the scaling factors selection algorithm for a grid, Algorithm~\ref{HSA-grid}, +is presented. It selects the vector of the frequency +scaling factors that gives the best trade-off between minimizing the +energy consumption and maximizing the performance of a message passing +synchronous iterative application executed on a grid that satisfies the objective function +(\ref{eq:max-grid}). +It has the same principles and specifications of the frequencies selection algorithm of the heterogeneous +local cluster \ref{HSA}. + +The value of the initial frequency scaling factor for each node is inversely proportional to its +computation time that was gathered from the first iteration. These initial +frequency scaling factors are computed as a ratio between the computation time +of the slowest node and the computation time of the node $i$ as follows: +\begin{equation} + \label{eq:Scp-grid} + \Scp[ij] = \frac{ \mathop{\max\limits_{i=1,\dots N}}\limits_{j=1,\dots,M}(\Tcp[ij])} {\Tcp[ij]} +\end{equation} +Using the initial frequency scaling factors computed in (\ref{eq:Scp-grid}), the +algorithm computes the initial frequencies for all nodes as a ratio between the +maximum frequency of node $i$ and the computation scaling factor $\Scp[i]$ as +follows: +\begin{equation} + \label{eq:Fint-grid} + F_{ij} = \frac{\Fmax[ij]}{\Scp[ij]},~{i=1,2,\dots,N},~{j=1,\dots,M} +\end{equation} +Figure \ref{fig:st_freq-grid} shows the selected initial frequencies for a grid composed of three clusters. +In contrast to algorithm \ref{HSA}, algorithm \ref{HSA-grid} replaces the computed initial frequency for a node by the nearest available frequency if not available in the gears of +that node. +The frequency scaling algorithm of the grid stops its iteration if it reaches to lower bound, which is the computed distance between the energy and performance at this frequency if it is less than zero. +A negative distance means that the performance degradation ratio is higher than the energy saving ratio as in figure \ref{fig:rel-grid}. +In this situation, the algorithm must stop the downward search because it has reached the lower bound and it is useless to test the lower frequencies. Indeed, they will all give worse distances. +Therefore, the algorithm iterates on all remaining frequencies, from the higher +bound until all nodes reach their minimum frequencies or their lower bounds, to compute the overall +energy consumption and performance and selects the optimal vector of the frequency scaling +factors. The DVFS algorithm~\ref{dvfs-heter} is also used to call the algorithm \ref{HSA-grid} in the MPI +program executed over grid platform. + +\section{Experimental results over Grid5000 platform} +\label{ch3:4} + +In this section, real experiments were conducted over the Grid'5000 platform. +Grid'5000~\cite{ref21} is a large-scale testbed that consists of ten sites distributed all over metropolitan France and Luxembourg. These sites are: Grenoble, Lille, Luxembourg, Lyon, Nancy, Reims, Rennes , Sophia, Toulouse, Bordeaux. Figure \ref{fig:grid5000-dis} shows the geographical distribution of grid'5000 sites over France and Luxembourg. All the sites are connected together via a special long distance network called RENATER, which is abbreviation of the French +National Telecommunication Network for Technology. Each site in the grid is +composed of a few heterogeneous computing clusters and each cluster contains +many homogeneous nodes. In total, Grid'5000 has about one thousand heterogeneous nodes and eight thousand cores. In each site, the clusters and their nodes +are connected via high speed local area networks. Two types of local networks +are used, Ethernet or Infiniband networks, which have different characteristics +in terms of bandwidth and latency. +Grid'5000 is dedicated as a test-bed for grid computing and thus users can book the required nodes from different sites. +It also gives the opportunity to the users to deploy their configured image of the operating system over the reserved nodes. +Indeed, many software tools are available for users in order to control and manage the reservation and deployment processes from their local machines. For example, OAR \cite{ref22} is a batch scheduler that is used to manage the heterogeneous resources of the grid'5000. + +\begin{figure}[h!] +\centering +\includegraphics[scale=1]{fig/ch3/grid5000.pdf} +\caption{Grid5000's sites distribution in France and Luxembourg} +\label{fig:grid5000-dis} +\end{figure} + + + Moreover, the Grid'5000 testbed provides at some sites a power measurement tool to capture +the power consumption for each node in those sites. The measured power is the overall consumed power by all the components of a node at a given instant, such as CPU, hard drive, main-board, memory, \dots{} For more details refer to \cite{ref79}. +In order to correctly measure the CPU power of one core in a node $j$, + firstly, the power consumed by the node while being idle at instant $y$, noted as $\Pidle[jy]$, was measured. Then, the power was measured while running a single thread benchmark with no communication (no idle time) over the same node with its CPU scaled to the maximum available frequency. The latter power measured at time $x$ with maximum frequency for one core of node $j$ is noted $\Pmax[jx]$. The difference between the two measured power consumptions represents the +dynamic power consumption of that core with the maximum frequency, see Figure~\ref{fig:power_cons}. + + +The dynamic power $\Pd[j]$ is computed as in Equation~\ref{eq:pdyn} +\begin{equation} + \label{eq:pdyn} + \Pd[j] = \max_{x=\beta_1,\dots \beta_2} (\Pmax[jx]) - \min_{y=\Theta_1,\dots \Theta_2} (\Pidle[jy]) +\end{equation} + +where $\Pd[j]$ is the dynamic power consumption for one core of node $j$, +$\lbrace \beta_1,\beta_2 \rbrace$ is the time interval for the measured maximum power values, +$\lbrace\Theta_1,\Theta_2\rbrace$ is the time interval for the measured idle power values. +Therefore, the dynamic power of one core is computed as the difference between the maximum +measured value in maximum powers vector and the minimum measured value in the idle powers vector. + +On the other hand, the static power consumption by one core is a part of the measured idle power consumption of the node. Since in Grid'5000 there is no way to measure precisely the consumed static power and same as in sections \ref{ch3:2} and \ref{ch2:6} it was assumed that the static power represents a ratio of the dynamic power, the value of the static power is assumed as 20\% of dynamic power consumption of the core. + +In the experiments presented in the following sections, two sites of Grid'5000 were used, Lyon and Nancy sites. These two sites have in total seven different clusters as shown on Figure~\ref{fig:grid5000}. + +Four clusters from the two sites were selected in the experiments: one cluster from +Lyon's site, Taurus, and three clusters from Nancy's site, Graphene, +Griffon and Graphite. Each one of these clusters has homogeneous nodes inside, while nodes from different clusters are heterogeneous in many aspects such as: computing power, power consumption, available +frequency ranges and local network features: the bandwidth and the latency. Table~\ref{table:grid5000-1} shows +the detailed characteristics of these four clusters. Moreover, the dynamic powers were computed using Equation~\ref{eq:pdyn} for all the nodes in the +selected clusters and are presented in Table~\ref{table:grid5000-1}. + + +\begin{figure}[!t] + \centering + \includegraphics[scale=1.4]{fig/ch3/grid5000-2} + \caption{The selected two sites of Grid'5000} + \label{fig:grid5000} +\end{figure} +\begin{figure}[!t] + \centering + \includegraphics[scale=0.8]{fig/ch3/power_consumption.pdf} + \caption{The power consumption by one core from the Taurus cluster} + \label{fig:power_cons} +\end{figure} + + +The energy model and the scaling factors selection algorithm were applied to the NAS parallel benchmarks v3.3 \cite{ref65} and evaluated over Grid'5000. +The benchmark suite contains seven applications: CG, MG, EP, LU, BT, SP and FT. These applications have different computations and communications ratios and strategies which make them good testbed applications to evaluate the proposed algorithm and energy model. +The benchmarks have seven different classes, S, W, A, B, C, D and E, that represent the size of the problem that the method solves. In this work, class D was used for all benchmarks in all the experiments presented in the next sections. + + + +\begin{table}[!t] + \caption{CPUs characteristics of the selected clusters} + % title of Table + \centering + \begin{tabular}{|*{7}{c|}} + \hline + & & Max & Min & Diff. & & \\ + Cluster & CPU & Freq. & Freq. & Freq. & Cores & Dynamic power \\ + Name & model & GHz & GHz & GHz & per CPU & of one core \\ + \hline + & Intel & & & & & \\ + Taurus & Xeon & 2.3 & 1.2 & 0.1 & 6 & \np[W]{35} \\ + & E5-2630 & & & & & \\ + \hline + & Intel & & & & & \\ + Graphene & Xeon & 2.53 & 1.2 & 0.133 & 4 & \np[W]{23} \\ + & X3440 & & & & & \\ + \hline + & Intel & & & & & \\ + Griffon & Xeon & 2.5 & 2 & 0.5 & 4 & \np[W]{46} \\ + & L5420 & & & & & \\ + \hline + & Intel & & & & & \\ + Graphite & Xeon & 2 & 1.2 & 0.1 & 8 & \np[W]{35} \\ + & E5-2650 & & & & & \\ + \hline + \end{tabular} + \label{table:grid5000-1} +\end{table} + + + +\subsection{The experimental results of the scaling algorithm of Grid} +\label{ch3:4:1} +In this section, the results of applying the scaling factors selection algorithm \ref{HSA} +to NAS parallel benchmarks are presented. + +As mentioned previously, the experiments +were conducted over two sites of Grid'5000, Lyon and Nancy sites. +Two scenarios were considered while selecting the clusters from these two sites : +\begin{itemize} +\item In the first scenario, nodes from two sites and three heterogeneous clusters were selected. The two sites are connected + via a long distance network. +\item In the second scenario nodes from three clusters located in one site, Nancy site, were selected. +\end{itemize} + +The main reason +for using these two scenarios is to evaluate the influence of long distance communications (higher latency) on the performance of the +scaling factors selection algorithm. Indeed, in the first scenario the computations to communications ratio +is very low due to the higher communication times which reduce the effect of DVFS operations. + +The NAS parallel benchmarks are executed over +16 and 32 nodes for each scenario. The number of participating computing nodes from each cluster +is different because all the selected clusters do not have the same available number of nodes and all benchmarks do not require the same number of computing nodes. +Table~\ref{tab:sc} shows the number of nodes used from each cluster for each scenario. + +\begin{table}[h] + +\caption{The different clusters scenarios} +\centering +\begin{tabular}{|*{4}{c|}} +\hline +\multirow{2}{*}{Scenario name} & \multicolumn{3}{c|} {The participating clusters} \\ \cline{2-4} + & Cluster & Site & Nodes per cluster \\ +\hline +\multirow{3}{*}{Two sites / 16 nodes} & Taurus & Lyon & 5 \\ \cline{2-4} + & Graphene & Nancy & 5 \\ \cline{2-4} + & Griffon & Nancy & 6 \\ +\hline +\multirow{3}{*}{Tow sites / 32 nodes} & Taurus & Lyon & 10 \\ \cline{2-4} + & Graphene & Nancy & 10 \\ \cline{2-4} + & Griffon &Nancy & 12 \\ +\hline +\multirow{3}{*}{One site / 16 nodes} & Graphite & Nancy & 4 \\ \cline{2-4} + & Graphene & Nancy & 6 \\ \cline{2-4} + & Griffon & Nancy & 6 \\ +\hline +\multirow{3}{*}{One site / 32 nodes} & Graphite & Nancy & 4 \\ \cline{2-4} + & Graphene & Nancy & 14 \\ \cline{2-4} + & Griffon & Nancy & 14 \\ +\hline +\end{tabular} + \label{tab:sc} +\end{table} + + +The NAS parallel benchmarks are executed over these two platforms + with different number of nodes, as in Table~\ref{tab:sc}. +The overall energy consumption of all the benchmarks solving the class D instance and +using the proposed frequency selection algorithm is measured +using the equation of the reduced energy consumption, Equation~\ref{eq:energy-grid}. This model uses the measured dynamic power showed in Table~\ref{table:grid5000-1} +and the static +power is assumed to be equal to 20\% of the dynamic power. The execution +time is measured for all the benchmarks over these different scenarios. + +The energy consumptions and the execution times for all the benchmarks are +presented in Figures~\ref{fig:exp-time-energy} (a) and (b) respectively. + +For the majority of the benchmarks, the energy consumed while executing the NAS benchmarks over one site scenario +for 16 and 32 nodes is lower than the energy consumed while using two sites. +The long distance communications between the two distributed sites increase the idle time, which leads to more static energy consumption. + +The execution times of these benchmarks +over one site with 16 and 32 nodes are also lower when compared to those of the two sites +scenario. Moreover, most of the benchmarks running over the one site scenario have their execution times approximately divided by two when the number of computing nodes is doubled from 16 to 32 nodes (linear speed up according to the number of the nodes). + +However, the execution times and the energy consumptions of EP and MG +benchmarks, which have no or small communications, are not significantly +affected in both scenarios, even when the number of nodes is doubled. On the +other hand, the communication times of the rest of the benchmarks increases when +using long distance communications between two sites or increasing the number of +computing nodes. + + +The energy saving percentage is computed as the ratio between the reduced +energy consumption, Equation~\ref{eq:energy-grid}, and the original energy consumption, +Equation~\ref{eq:eorginal-grid}, for all benchmarks as in Figure~\ref{fig:eng_s}. +This figure shows that the energy saving percentages of one site scenario for +16 and 32 nodes are bigger than those of the two sites scenario which is due +to the higher computations to communications ratio in the first scenario +than in the second one. Moreover, the frequency selecting algorithm selects smaller frequencies when the computation times are bigger than the communication times which +results in a lower energy consumption. Indeed, the dynamic consumed power +is exponentially related to the CPU's frequency value. On the other hand, the increase in the number of computing nodes can +increase the communication times and thus produces less energy saving depending on the +benchmarks being executed. The results of benchmarks CG, MG, BT and FT show more +energy saving percentage in one site scenario when executed over 16 nodes comparing to 32 nodes. While, LU and SP consume more energy with 16 nodes than 32 in one site because their computations to communications ratio is not affected by the increase of the number of local communications. +\begin{figure}[!t] + \centering + \centering + \includegraphics[width=.7\textwidth]{fig/ch3/eng_con_scenarios.eps}\\~~~~~~~~~(a)\\ + \includegraphics[width=.7\textwidth]{fig/ch3/time_scenarios.eps}\\~~~~~~~~~(b) + \caption{ (a) energy consumption and (b) execution time of NAS Benchmarks over different scenarios} + \label{fig:exp-time-energy} + +\end{figure} + + +The energy saving percentage is reduced for all the benchmarks because of the long distance communications in the two sites +scenario, except for the EP benchmark which has no communication. Therefore, the energy saving percentage of this benchmark is +dependent on the maximum difference between the computing powers of the heterogeneous computing nodes, for example +in the one site scenario, the graphite cluster is selected but in the two sites scenario +this cluster is replaced with the Taurus cluster which is more powerful. +Therefore, the energy savings of the EP benchmark are bigger in the two sites scenario due +to the higher maximum difference between the computing powers of the nodes. + +In fact, high differences between the nodes' computing powers make the proposed frequencies selecting +algorithm select smaller frequencies for the powerful nodes which +produces less energy consumption and thus more energy saving. +The best energy saving percentage was obtained in the one site scenario with 16 nodes, the energy consumption was on average reduced up to 30\%. + + + +\begin{figure*}[t] +\centering +\includegraphics[width=.7\textwidth]{fig/ch3/eng_s.eps} +\caption{The energy reduction while executing the NAS benchmarks over different scenarios} +\label{fig:eng_s} +\end{figure*} +\begin{figure*}[t] +\centering +\includegraphics[width=.7\textwidth]{fig/ch3/per_d.eps} +\caption{The performance degradation of the NAS benchmarks over different scenarios} +\label{fig:per_d} +\end{figure*} +\begin{figure*}[t] +\centering +\includegraphics[width=.7\textwidth]{fig/ch3/dist.eps} +\caption{The trade-off distance between the energy reduction and the performance of the NAS benchmarks + over different scenarios} +\label{fig:dist-grid} +\end{figure*} + + + +Figure \ref{fig:per_d} presents the performance degradation percentages for all benchmarks over the two scenarios. +The performance degradation percentage for the benchmarks running on two sites with +16 or 32 nodes is on average equal to 8.3\% or 4.7\% respectively. +For this scenario, the proposed scaling algorithm selects smaller frequencies for the executions with 32 nodes without significantly degrading their performance because the communication times are higher with 32 nodes which results in smaller computations to communications ratio. On the other hand, the performance degradation percentage for the benchmarks running on one site with +16 or 32 nodes is on average equal to 3.2\% or 10.6\% respectively. In contrary to the two sites scenario, when the number of computing nodes is increased in the one site scenario, the performance degradation percentage is increased. Therefore, doubling the number of computing +nodes when the communications occur in high speed network does not decrease the computations to +communication ratio. + +The performance degradation percentage of the EP benchmark after applying the scaling factors selection algorithm is the highest in comparison to +the other benchmarks. Indeed, in the EP benchmark, there are no communication and slack times and its +performance degradation percentage only depends on the frequencies values selected by the algorithm for the computing nodes. +The rest of the benchmarks showed different performance degradation percentages, which decrease +when the communication times increase and vice versa. + +Figure \ref{fig:dist-grid} presents the distance percentage between the energy saving and the performance degradation for each benchmark over both scenarios. The trade-off distance percentage can be +computed as in Equation~\ref{eq:max-grid}. The one site scenario with 16 nodes gives the best energy and performance +trade-off, on average it is equal to 26.8\%. The one site scenario using both 16 and 32 nodes had better energy and performance +trade-off comparing to the two sites scenario because the former has high speed local communications +which increase the computations to communications ratio and the latter uses long distance communications which decrease this ratio. + + Finally, the best energy and performance trade-off depends on all of the following: +1) the computations to communications ratio when there are communications and slack times, 2) the heterogeneity of the computing powers of the nodes and 3) the heterogeneity of the consumed static and dynamic powers of the nodes. + + + + +\subsection{The experimental results over multi-cores clusters} +\label{ch3:4:2} + +The clusters of Grid'5000 have different number of cores embedded in their nodes +as shown in Table~\ref{table:grid5000-1}. In +this section, the proposed scaling algorithm of the grid is evaluated over the Grid'5000 platform while using multi-cores nodes selected according to the one site scenario described in Section +~\ref{ch3:4:1}. +The one site scenario uses 32 cores from multi-cores nodes instead of 32 distinct nodes. For example if +the participating number of cores from a certain cluster is equal to 14, +in the multi-core scenario the selected nodes is equal to 4 nodes while using +3 or 4 cores from each node. The platforms with one +core per node and multi-cores nodes are shown in Table~\ref{table:sen-mc}. +The energy consumptions and execution times of running class D of the NAS parallel +benchmarks over these two different scenarios are presented +in Figures \ref{fig:eng-cons-mc} and \ref{fig:time-mc} respectively. + + +\begin{table}[] +\centering +\caption{The multicores scenarios} +\begin{tabular}{|*{4}{c|}} +\hline +Scenario name & Cluster name & Nodes per cluster & + Cores per node \\ \hline +\multirow{3}{*}{One core per node} & Graphite & 4 & 1 \\ \cline{2-4} + & Graphene & 14 & 1 \\ \cline{2-4} + & Griffon & 14 & 1 \\ \hline +\multirow{3}{*}{Multi-cores per node} & Graphite & 1 & 4 \\ \cline{2-4} + & Graphene & 4 & 3 or 4 \\ \cline{2-4} + & Griffon & 4 & 3 or 4 \\ \hline +\end{tabular} +\label{table:sen-mc} +\end{table} + + + + +\begin{figure}[!t] + \centering + \includegraphics[width=.7\textwidth]{fig/ch3/time.eps} + \caption{The execution times of running NAS benchmarks over one core and multicores scenarios} + \label{fig:time-mc} +\end{figure} +\begin{figure}[!t] + \centering + \includegraphics[width=.7\textwidth]{fig/ch3/eng_con.eps} + \caption{The energy consumptions and execution times of NAS benchmarks over one core and multi-cores per node architectures} +\label{fig:eng-cons-mc} +\end{figure} + +The execution times for most of the NAS benchmarks are higher over the multi-cores per node scenario +than over single core per node scenario. Indeed, + the communication times are higher in the one site multi-cores scenario than in the latter scenario because all the cores of a node share the same node network link which can be saturated when running communication bound applications. Moreover, the cores of a node share the memory bus which can be also saturated and become a bottleneck. +Moreover, the energy consumptions of the NAS benchmarks are lower over the + one core scenario than over the multi-cores scenario because +the first scenario had less execution time than the latter which results in less static energy being consumed. +The computations to communications ratios of the NAS benchmarks are higher over +the one site one core scenario when compared to the ratio of the multi-cores scenario. +More energy reduction can be gained when this ratio is big because it pushes the proposed scaling algorithm to select smaller frequencies that decrease the dynamic power consumption. These experiments also showed that the energy +consumption and the execution times of the EP and MG benchmarks do not change significantly over these two +scenarios because there are no or small communications. Contrary to EP and MG, the energy consumptions and the execution times of the rest of the benchmarks vary according to the communication times that are different from one scenario to the other. + + +\begin{figure*}[!t] + \centering + \includegraphics[width=.7\textwidth]{fig/ch3/eng_s_mc.eps} + \caption{The energy saving of running NAS benchmarks over one core and multicores scenarios} + \label{fig:eng-s-mc} +\end{figure*} +\begin{figure*}[!t] + \centering +\includegraphics[width=.7\textwidth]{fig/ch3/per_d_mc.eps} + \caption{The performance degradation of running NAS benchmarks over one core and multicores scenarios} + \label{fig:per-d-mc} +\end{figure*} +\begin{figure*}[!t] + \centering + \includegraphics[width=.7\textwidth]{fig/ch3/dist_mc.eps} + \caption{The trade-off distance of running NAS benchmarks over one core and multicores scenarios} + \label{fig:dist-mc} +\end{figure*} + +The energy saving percentages of all NAS benchmarks running over these two scenarios are presented in Figure~\ref{fig:eng-s-mc}. +The figure shows that the energy saving percentages in the one +core and the multi-cores scenarios +are approximately equivalent, on average they are equal to 25.9\% and 25.1\% respectively. +The energy consumption is reduced at the same rate in the two scenarios when compared to the energy consumption of the executions without DVFS. + + +The performance degradation percentages of the NAS benchmarks are presented in +Figure~\ref{fig:per-d-mc}. It shows that the performance degradation percentages are higher for the NAS benchmarks over the one core per node scenario (on average equal to 10.6\%) than over the multi-cores scenario (on average equal to 7.5\%). The performance degradation percentages over the multi-cores scenario are lower because the computations to communications ratios are smaller than the ratios of the other scenario. + +The trade-off distances percentages of the NAS benchmarks over the two scenarios are presented +in ~Figure~\ref{fig:dist-mc}. These trade-off distances between energy consumption reduction and performance are used to verify which scenario is the best in both terms at the same time. The figure shows that the trade-off distance percentages are on average bigger over the multi-cores scenario (17.6\%) than over the one core per node scenario (15.3\%). + + +\subsection{Experiments with different static power scenarios} +\label{ch3:4:3} + +In Section~\ref{ch3:4}, since it was not possible to measure the static power consumed by a CPU, the static power was assumed to be equal to 20\% of the measured dynamic power. This power is consumed during the whole execution time, during computation and communication times. Therefore, when the DVFS operations are applied by the scaling algorithm and the CPUs' frequencies lowered, the execution time might increase and consequently the consumed static energy will be increased too. + +The aim of this section is to evaluate the scaling algorithm while assuming different values of static powers. +In addition to the previously used percentage of static power, two new static power ratios, 10\% and 30\% of the measured dynamic power of the core, are used in this section. +The experiments have been executed with these two new static power scenarios over the one site one core per node scenario. +In these experiments, class D of the NAS parallel benchmarks are executed over the Nancy site. 16 computing nodes from the three clusters, Graphite, Graphene and Griffon, where used in this experiment. + + + + +\begin{figure}[!t] + \centering + \includegraphics[width=.7\textwidth]{fig/ch3/eng_pow.eps} + \caption{The energy saving percentages for the nodes executing the NAS benchmarks over the three power scenarios} + \label{fig:eng-pow} +\end{figure} +\begin{figure}[!t] + \centering + \includegraphics[width=.7\textwidth]{fig/ch3/per_pow.eps} + \caption{The performance degradation percentages for the NAS benchmarks over the three power scenarios} + \label{fig:per-pow} +\end{figure} +\begin{figure}[!t] + \centering + \includegraphics[width=.7\textwidth]{fig/ch3/dist_pow.eps} + \caption{The trade-off distance between the energy reduction and the performance of the NAS benchmarks over the three power scenarios} + \label{fig:dist-pow} +\end{figure} + + +\begin{figure} + \centering + \includegraphics[scale=0.7]{fig/ch3/three_scenarios2.pdf} + \caption{Comparing the selected frequency scaling factors for the MG benchmark over the three static power scenarios} + \label{fig:fre-pow} +\end{figure} + +The energy saving percentages of the NAS benchmarks with the three static power scenarios are presented +in Figure~\ref{fig:eng-pow}. This figure shows that the 10\% of static power scenario +gives the biggest energy saving percentages in comparison to the 20\% and 30\% static power +scenarios. The small value of the static power consumption makes the proposed +scaling algorithm select smaller frequencies for the CPUs. +These smaller frequencies reduce the dynamic energy consumption more than increasing the consumed static energy which gives less overall energy consumption. +The energy saving percentages of the 30\% static power scenario is the smallest between the other scenarios, because the scaling algorithm selects bigger frequencies for the CPUs which increases the energy consumption. Figure \ref{fig:fre-pow} demonstrates that the proposed scaling algorithm selects the best frequency scaling factors according to the static power consumption ratio being used. + +The performance degradation percentages are presented in Figure~\ref{fig:per-pow}. +The 30\% static power scenario had less performance degradation percentage because the scaling algorithm +had selected big frequencies for the CPUs. While, +the inverse happens in the 10\% and 20\% scenarios because the scaling algorithm had selected CPUs' frequencies smaller than those of the 30\% scenario. The trade-off distance percentage for the NAS benchmarks with these three static power scenarios +are presented in Figure~\ref{fig:dist-pow}. +It shows that the best trade-off +distance percentage is obtained with the 10\% static power scenario and this percentage +is decreased for the other two scenarios because the scaling algorithm had selected different frequencies according to the static power values. + +In the EP benchmark, the energy saving, performance degradation and trade-off +distance percentages for these static power scenarios are not significantly different because there is no communication in this benchmark. Therefore, the static power is only consumed during computation and the proposed scaling algorithm selects similar frequencies for the three scenarios. On the other hand, for the rest of the benchmarks, the scaling algorithm selects the values of the frequencies according to the communication times of each benchmark because the static energy consumption increases proportionally to the communication times. + + + +\subsection{Comparison of the proposed frequencies selecting algorithm } +\label{ch3:4:4} + +Finding the frequencies that give the best trade-off between the energy consumption and the performance for a parallel +application is not a trivial task. Many algorithms have been proposed to tackle this problem. +In this section, the proposed frequencies selecting algorithm is compared to a method that uses the well known energy and delay product objective function, $EDP=energy \times delay$, that has been used by many researchers \cite{ref80,ref81,ref82}. +This objective function was also used by Spiliopoulos et al. algorithm \cite{ref67} where they select the frequencies that minimize the EDP product and apply them with DVFS operations to the multi-cores +architecture. Their online algorithm predicts the energy consumption and execution time of a processor before using the EDP method. + +To fairly compare the proposed frequencies scaling algorithm to Spiliopoulos et al. algorithm, called Maxdist and EDP respectively, both algorithms use the same energy model, Equation~\ref{eq:energy-grid} and +execution time model, Equation~\ref{eq:perf-grid}, to predict the energy consumption and the execution time for each computing node. +Moreover, both algorithms start the search space from the upper bound computed as in Equation~\ref{eq:Fint}. +Finally, the resulting EDP algorithm is an exhaustive search algorithm that tests all the possible frequencies, starting from the initial frequencies (upper bound), +and selects the vector of frequencies that minimize the EDP product. +Both algorithms were applied to class D of the NAS benchmarks over 16 nodes. +The participating computing nodes are distributed according to the two scenarios described in Section~\ref{ch3:4:1}. +The experimental results, the energy saving, performance degradation and trade-off distance percentages, are +presented in Figures~\ref{fig:edp-eng}, \ref{fig:edp-perf} and \ref{fig:edp-dist} respectively. + + + +\begin{figure*}[!t] + \centering + \includegraphics[width=.7\textwidth]{fig/ch3/edp_eng} +\caption{The energy reduction induced by the Maxdist method and the EDP method} +\label{fig:edp-eng} +\end{figure*} +\begin{figure*}[!t] + \centering + \includegraphics[width=.7\textwidth]{fig/ch3/edp_per} +\caption{The performance degradation induced by the Maxdist method and the EDP method} +\label{fig:edp-perf} +\end{figure*} +\begin{figure*}[!t] + \centering + \includegraphics[width=.7\textwidth]{fig/ch3/edp_dist} +\caption{The trade-off distance between the energy consumption reduction and the performance for the Maxdist method and the EDP method} +\label{fig:edp-dist} +\end{figure*} + + +As shown in these figures, the proposed frequencies selection algorithm, Maxdist, outperforms the EDP algorithm in terms of energy consumption reduction and performance for all of the benchmarks executed over the two scenarios. +The proposed algorithm gives better results than EDP because it +maximizes the energy saving and the performance at the same time. +Moreover, the proposed scaling algorithm gives the same weight for these two metrics. +Whereas, the EDP algorithm gives sometimes negative trade-off values for some benchmarks in the two sites scenarios. +These negative trade-off values mean that the performance degradation percentage is higher than the energy saving percentage. +The high positive values of the trade-off distance percentage mean that the energy saving percentage is much higher than the performance degradation percentage. +The time complexity of both Maxdist and EDP algorithms are $O(N \cdot M \cdot F)$ and +$O(N \cdot M \cdot F^2)$ respectively, where $N$ is the number of the clusters, $M$ is the number of nodes and $F$ is the +maximum number of available frequencies. When Maxdist is applied to a benchmark that is being executed over 32 nodes distributed between Nancy and Lyon sites, it takes on average $0.01 ms$ to compute the best frequencies while EDP is on average ten times slower over the same architecture. + + +\section{Conclusion} +\label{ch3:concl} +In this chapter, two new online frequency scaling factors selecting algorithms have been presented. They select the best possible vectors of frequency scaling factors that give the +maximum distance (optimal trade-off) between the predicted energy and the +predicted performance curves for a heterogeneous cluster and grid. Both algorithms use a +new energy models for measuring and predicting the energy of distributed +iterative applications running over a heterogeneous local cluster and a grid platform. +Firstly, the proposed scaling factors selection algorithm for a heterogeneous local cluster is applied to NAS parallel benchmarks class C and simulated by SimGrid. +The results of the experiments showed that the algorithm on average reduces by 29.8\% the energy +consumption of NAS benchmarks executed over 8 nodes while limiting the degradation of the performance by 3.8\%. The algorithm also selects different scaling factors according to +the percentage of the computing and communication times, and according to the +values of the static and dynamic powers of the CPUs. +Secondly, the proposed scaling factors selection algorithm for a grid is applied to NAS parallel benchmarks class D and executed over Grid5000 testbed platform. +The experiments on 16 nodes, distributed over three clusters, showed that the algorithm on average reduces by 30\% the energy consumption +for all the NAS benchmarks while on average only degrading by 3.2\% the performance. +The algorithm was also evaluated in different scenarios that vary in the distribution of the computing nodes between different clusters' sites or use multi-cores per node architecture or consume different static power values. The algorithm selects different vectors of frequencies according to the +computations and communication times ratios, and the values of the static and measured dynamic powers of the CPUs. Thus, the simulation and the real results are comparable in term of energy saving and performance degradation percentages. +Finally, both the proposed algorithms were compared to another method that uses +the well known energy and delay product as an objective function. 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closepath fill + vpt 0 360 arc closepath} bind def +/C8 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 270 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C9 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 270 450 arc closepath fill + vpt 0 360 arc closepath} bind def +/C10 {BL [] 0 setdash 2 copy 2 copy moveto vpt 270 360 arc closepath fill + 2 copy moveto + 2 copy vpt 90 180 arc closepath fill + vpt 0 360 arc closepath} bind def +/C11 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 180 arc closepath fill + 2 copy moveto + 2 copy vpt 270 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C12 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 180 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C13 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 90 arc closepath fill + 2 copy moveto + 2 copy vpt 180 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C14 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 90 360 arc closepath fill + vpt 0 360 arc} bind def +/C15 {BL [] 0 setdash 2 copy vpt 0 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/Rec {newpath 4 2 roll moveto 1 index 0 rlineto 0 exch rlineto + neg 0 rlineto closepath} bind def +/Square {dup Rec} bind def +/Bsquare {vpt sub exch vpt sub exch vpt2 Square} bind def +/S0 {BL [] 0 setdash 2 copy moveto 0 vpt rlineto BL Bsquare} bind def +/S1 {BL [] 0 setdash 2 copy vpt Square fill Bsquare} bind def +/S2 {BL [] 0 setdash 2 copy exch vpt sub exch vpt Square fill Bsquare} bind def +/S3 {BL [] 0 setdash 2 copy exch vpt sub exch vpt2 vpt Rec fill Bsquare} bind def +/S4 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt Square fill Bsquare} bind def +/S5 {BL [] 0 setdash 2 copy 2 copy vpt Square fill + exch vpt sub exch vpt sub vpt Square fill Bsquare} bind def +/S6 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt vpt2 Rec fill Bsquare} bind def +/S7 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt vpt2 Rec fill + 2 copy vpt Square fill Bsquare} bind def +/S8 {BL [] 0 setdash 2 copy vpt sub vpt Square fill Bsquare} bind def +/S9 {BL [] 0 setdash 2 copy vpt sub vpt vpt2 Rec fill Bsquare} bind def +/S10 {BL [] 0 setdash 2 copy vpt sub vpt Square fill 2 copy exch vpt sub exch vpt Square fill + Bsquare} bind def +/S11 {BL [] 0 setdash 2 copy vpt sub vpt Square fill 2 copy exch vpt sub exch vpt2 vpt Rec fill + Bsquare} bind def +/S12 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill Bsquare} bind def +/S13 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill + 2 copy vpt Square fill Bsquare} bind def +/S14 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill + 2 copy exch vpt sub exch vpt Square fill Bsquare} bind def +/S15 {BL [] 0 setdash 2 copy Bsquare fill Bsquare} bind def +/D0 {gsave translate 45 rotate 0 0 S0 stroke grestore} bind def +/D1 {gsave translate 45 rotate 0 0 S1 stroke grestore} bind def +/D2 {gsave translate 45 rotate 0 0 S2 stroke grestore} bind def +/D3 {gsave translate 45 rotate 0 0 S3 stroke grestore} bind def +/D4 {gsave translate 45 rotate 0 0 S4 stroke grestore} bind def +/D5 {gsave translate 45 rotate 0 0 S5 stroke grestore} bind def +/D6 {gsave translate 45 rotate 0 0 S6 stroke grestore} bind def +/D7 {gsave translate 45 rotate 0 0 S7 stroke grestore} bind def +/D8 {gsave translate 45 rotate 0 0 S8 stroke grestore} bind def +/D9 {gsave translate 45 rotate 0 0 S9 stroke grestore} bind def +/D10 {gsave translate 45 rotate 0 0 S10 stroke grestore} bind def +/D11 {gsave translate 45 rotate 0 0 S11 stroke grestore} bind def +/D12 {gsave translate 45 rotate 0 0 S12 stroke grestore} bind def +/D13 {gsave translate 45 rotate 0 0 S13 stroke grestore} bind def +/D14 {gsave translate 45 rotate 0 0 S14 stroke grestore} bind def +/D15 {gsave translate 45 rotate 0 0 S15 stroke grestore} bind def +/DiaE {stroke [] 0 setdash vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt neg vpt V closepath stroke} def +/BoxE {stroke [] 0 setdash exch hpt sub exch vpt add M + 0 vpt2 neg V hpt2 0 V 0 vpt2 V + hpt2 neg 0 V closepath stroke} def +/TriUE {stroke [] 0 setdash vpt 1.12 mul add M + hpt neg vpt -1.62 mul V + hpt 2 mul 0 V + hpt neg vpt 1.62 mul V closepath stroke} def +/TriDE {stroke [] 0 setdash vpt 1.12 mul sub M + hpt neg vpt 1.62 mul V + hpt 2 mul 0 V + hpt neg vpt -1.62 mul V closepath stroke} def +/PentE {stroke [] 0 setdash gsave + translate 0 hpt M 4 {72 rotate 0 hpt L} repeat + closepath stroke grestore} def +/CircE {stroke [] 0 setdash + hpt 0 360 arc stroke} def +/Opaque {gsave closepath 1 setgray fill grestore 0 setgray closepath} def +/DiaW {stroke [] 0 setdash vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt neg vpt V Opaque stroke} def +/BoxW {stroke [] 0 setdash exch hpt sub exch vpt add M + 0 vpt2 neg V hpt2 0 V 0 vpt2 V + hpt2 neg 0 V Opaque stroke} def +/TriUW {stroke [] 0 setdash vpt 1.12 mul add M + hpt neg vpt -1.62 mul V + hpt 2 mul 0 V + hpt neg vpt 1.62 mul V Opaque stroke} def +/TriDW {stroke [] 0 setdash vpt 1.12 mul sub M + hpt neg vpt 1.62 mul V + hpt 2 mul 0 V + hpt neg vpt -1.62 mul V Opaque stroke} def +/PentW {stroke [] 0 setdash gsave + translate 0 hpt M 4 {72 rotate 0 hpt L} repeat + Opaque stroke grestore} def +/CircW {stroke [] 0 setdash + hpt 0 360 arc Opaque stroke} def +/BoxFill {gsave Rec 1 setgray fill grestore} def +/Density { + /Fillden exch def + currentrgbcolor + /ColB exch def /ColG exch def /ColR exch def + /ColR ColR Fillden mul Fillden sub 1 add def + /ColG ColG Fillden mul Fillden sub 1 add def + /ColB ColB Fillden mul Fillden sub 1 add def + ColR ColG ColB setrgbcolor} def +/BoxColFill {gsave Rec PolyFill} def +/PolyFill {gsave Density fill grestore grestore} def +/h {rlineto rlineto rlineto gsave closepath fill grestore} bind def +% +% PostScript Level 1 Pattern Fill routine for rectangles +% Usage: x y w h s a XX PatternFill +% x,y = lower left corner of box to be filled +% w,h = width and height of box +% a = angle in degrees between lines and x-axis +% XX = 0/1 for no/yes cross-hatch +% +/PatternFill {gsave /PFa [ 9 2 roll ] def + PFa 0 get PFa 2 get 2 div add PFa 1 get PFa 3 get 2 div add translate + PFa 2 get -2 div PFa 3 get -2 div PFa 2 get PFa 3 get Rec + TransparentPatterns {} {gsave 1 setgray fill grestore} ifelse + clip + currentlinewidth 0.5 mul setlinewidth + /PFs PFa 2 get dup mul PFa 3 get dup mul add sqrt def + 0 0 M PFa 5 get rotate PFs -2 div dup translate + 0 1 PFs PFa 4 get div 1 add floor cvi + {PFa 4 get mul 0 M 0 PFs V} for + 0 PFa 6 get ne { + 0 1 PFs PFa 4 get div 1 add floor cvi + {PFa 4 get mul 0 2 1 roll M PFs 0 V} for + } if + stroke grestore} def +% +/languagelevel where + {pop languagelevel} {1} ifelse + 2 lt + {/InterpretLevel1 true def} + {/InterpretLevel1 Level1 def} + ifelse +% +% PostScript level 2 pattern fill definitions +% +/Level2PatternFill { +/Tile8x8 {/PaintType 2 /PatternType 1 /TilingType 1 /BBox [0 0 8 8] /XStep 8 /YStep 8} + bind def +/KeepColor {currentrgbcolor [/Pattern /DeviceRGB] setcolorspace} bind def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 8 8 L 0 8 M 8 0 L stroke} +>> matrix makepattern +/Pat1 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 8 8 L 0 8 M 8 0 L stroke + 0 4 M 4 8 L 8 4 L 4 0 L 0 4 L stroke} +>> matrix makepattern +/Pat2 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 0 8 L + 8 8 L 8 0 L 0 0 L fill} +>> matrix makepattern +/Pat3 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -4 8 M 8 -4 L + 0 12 M 12 0 L stroke} +>> matrix makepattern +/Pat4 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -4 0 M 8 12 L + 0 -4 M 12 8 L stroke} +>> matrix makepattern +/Pat5 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -2 8 M 4 -4 L + 0 12 M 8 -4 L 4 12 M 10 0 L stroke} +>> matrix makepattern +/Pat6 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -2 0 M 4 12 L + 0 -4 M 8 12 L 4 -4 M 10 8 L stroke} +>> matrix makepattern +/Pat7 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 8 -2 M -4 4 L + 12 0 M -4 8 L 12 4 M 0 10 L stroke} +>> matrix makepattern +/Pat8 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 -2 M 12 4 L + -4 0 M 12 8 L -4 4 M 8 10 L stroke} +>> matrix makepattern +/Pat9 exch def +/Pattern1 {PatternBgnd KeepColor Pat1 setpattern} bind def +/Pattern2 {PatternBgnd KeepColor Pat2 setpattern} bind def +/Pattern3 {PatternBgnd KeepColor Pat3 setpattern} bind def +/Pattern4 {PatternBgnd KeepColor Landscape {Pat5} {Pat4} ifelse setpattern} bind def +/Pattern5 {PatternBgnd KeepColor Landscape {Pat4} {Pat5} ifelse setpattern} bind def +/Pattern6 {PatternBgnd KeepColor Landscape {Pat9} {Pat6} ifelse setpattern} bind def +/Pattern7 {PatternBgnd KeepColor Landscape {Pat8} {Pat7} ifelse setpattern} bind def +} def +% +% +%End of PostScript Level 2 code +% +/PatternBgnd { + TransparentPatterns {} {gsave 1 setgray fill grestore} ifelse +} def +% +% Substitute for Level 2 pattern fill codes with +% grayscale if Level 2 support is not selected. +% +/Level1PatternFill { +/Pattern1 {0.250 Density} bind def +/Pattern2 {0.500 Density} bind def +/Pattern3 {0.750 Density} bind def +/Pattern4 {0.125 Density} bind def +/Pattern5 {0.375 Density} bind def +/Pattern6 {0.625 Density} bind def +/Pattern7 {0.875 Density} bind def +} def +% +% Now test for support of Level 2 code +% +Level1 {Level1PatternFill} {Level2PatternFill} ifelse +% +/Symbol-Oblique /Symbol findfont [1 0 .167 1 0 0] makefont +dup length dict begin {1 index /FID eq {pop pop} {def} ifelse} forall +currentdict end definefont pop +% +% Encoding for ISO-8859-1 (also called Latin1) +% +/reencodeISO { +dup dup findfont dup length dict begin +{ 1 index /FID ne { def }{ pop pop } ifelse } forall +currentdict /CharStrings known { + CharStrings /Idieresis known { + /Encoding ISOLatin1Encoding def } if +} if +currentdict end definefont +} def +/ISOLatin1Encoding [ +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/space/exclam/quotedbl/numbersign/dollar/percent/ampersand/quoteright +/parenleft/parenright/asterisk/plus/comma/minus/period/slash +/zero/one/two/three/four/five/six/seven/eight/nine/colon/semicolon +/less/equal/greater/question/at/A/B/C/D/E/F/G/H/I/J/K/L/M/N +/O/P/Q/R/S/T/U/V/W/X/Y/Z/bracketleft/backslash/bracketright +/asciicircum/underscore/quoteleft/a/b/c/d/e/f/g/h/i/j/k/l/m +/n/o/p/q/r/s/t/u/v/w/x/y/z/braceleft/bar/braceright/asciitilde +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/dotlessi/grave/acute/circumflex/tilde/macron/breve +/dotaccent/dieresis/.notdef/ring/cedilla/.notdef/hungarumlaut +/ogonek/caron/space/exclamdown/cent/sterling/currency/yen/brokenbar +/section/dieresis/copyright/ordfeminine/guillemotleft/logicalnot +/hyphen/registered/macron/degree/plusminus/twosuperior/threesuperior +/acute/mu/paragraph/periodcentered/cedilla/onesuperior/ordmasculine +/guillemotright/onequarter/onehalf/threequarters/questiondown +/Agrave/Aacute/Acircumflex/Atilde/Adieresis/Aring/AE/Ccedilla +/Egrave/Eacute/Ecircumflex/Edieresis/Igrave/Iacute/Icircumflex +/Idieresis/Eth/Ntilde/Ograve/Oacute/Ocircumflex/Otilde/Odieresis +/multiply/Oslash/Ugrave/Uacute/Ucircumflex/Udieresis/Yacute +/Thorn/germandbls/agrave/aacute/acircumflex/atilde/adieresis +/aring/ae/ccedilla/egrave/eacute/ecircumflex/edieresis/igrave +/iacute/icircumflex/idieresis/eth/ntilde/ograve/oacute/ocircumflex +/otilde/odieresis/divide/oslash/ugrave/uacute/ucircumflex/udieresis +/yacute/thorn/ydieresis +] def +/MFshow { + { dup 5 get 3 ge + { 5 get 3 eq {gsave} {grestore} ifelse } + {dup dup 0 get findfont exch 1 get scalefont setfont + [ currentpoint ] exch dup 2 get 0 exch R dup 5 get 2 ne {dup dup 6 + get exch 4 get {Gshow} {stringwidth pop 0 R} ifelse }if dup 5 get 0 eq + {dup 3 get {2 get neg 0 exch R pop} {pop aload pop M} ifelse} {dup 5 + get 1 eq {dup 2 get exch dup 3 get exch 6 get stringwidth pop -2 div + dup 0 R} {dup 6 get stringwidth pop -2 div 0 R 6 get + show 2 index {aload pop M neg 3 -1 roll neg R pop pop} {pop pop pop + pop aload pop M} ifelse }ifelse }ifelse } + ifelse } + forall} def +/Gswidth {dup type /stringtype eq {stringwidth} {pop (n) stringwidth} ifelse} def +/MFwidth {0 exch { dup 5 get 3 ge { 5 get 3 eq { 0 } { pop } ifelse } + {dup 3 get{dup dup 0 get findfont exch 1 get scalefont setfont + 6 get Gswidth pop add} {pop} ifelse} ifelse} forall} def +/MLshow { currentpoint stroke M + 0 exch R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/MRshow { currentpoint stroke M + exch dup MFwidth neg 3 -1 roll R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/MCshow { currentpoint stroke M + exch dup MFwidth -2 div 3 -1 roll R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/XYsave { [( ) 1 2 true false 3 ()] } bind def +/XYrestore { [( ) 1 2 true false 4 ()] } bind def +/Helvetica reencodeISO def +Level1 SuppressPDFMark or +{} { +/SDict 10 dict def +systemdict /pdfmark known not { + userdict /pdfmark systemdict /cleartomark get put +} if +SDict begin [ + /Title () + /Subject (gnuplot plot) + /Creator (gnuplot 4.6 patchlevel 6) + /Author (afanfakh) +% /Producer (gnuplot) +% /Keywords () + /CreationDate (Thu Oct 22 17:45:05 2015) + /DOCINFO pdfmark +end +} ifelse +end +%%EndProlog +%%Page: 1 1 +gnudict begin +gsave +doclip +50 50 translate +0.100 0.100 scale +0 setgray +newpath +(Helvetica) findfont 110 scalefont setfont +BackgroundColor 0 lt 3 1 roll 0 lt exch 0 lt or or not {gsave BackgroundColor C clippath fill grestore} if +1.000 UL +LTb +473 352 M +63 0 V +4305 0 R +-63 0 V +stroke +407 352 M +[ [(Helvetica) 150.0 0.0 true true 0 ( 0)] +] -50.0 MRshow +1.000 UL +LTb +473 430 M +31 0 V +4337 0 R +-31 0 V +473 508 M 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{show} def % May be redefined later in the file to support UTF-8 +/vpt2 vpt 2 mul def +/hpt2 hpt 2 mul def +/Lshow {currentpoint stroke M 0 vshift R + Blacktext {gsave 0 setgray show grestore} {show} ifelse} def +/Rshow {currentpoint stroke M dup stringwidth pop neg vshift R + Blacktext {gsave 0 setgray show grestore} {show} ifelse} def +/Cshow {currentpoint stroke M dup stringwidth pop -2 div vshift R + Blacktext {gsave 0 setgray show grestore} {show} ifelse} def +/UP {dup vpt_ mul /vpt exch def hpt_ mul /hpt exch def + /hpt2 hpt 2 mul def /vpt2 vpt 2 mul def} def +/DL {Color {setrgbcolor Solid {pop []} if 0 setdash} + {pop pop pop 0 setgray Solid {pop []} if 0 setdash} ifelse} def +/BL {stroke userlinewidth 2 mul setlinewidth + Rounded {1 setlinejoin 1 setlinecap} if} def +/AL {stroke userlinewidth 2 div setlinewidth + Rounded {1 setlinejoin 1 setlinecap} if} def +/UL {dup gnulinewidth mul /userlinewidth exch def + dup 1 lt {pop 1} if 10 mul /udl exch def} def +/PL {stroke userlinewidth setlinewidth + Rounded {1 setlinejoin 1 setlinecap} if} def +3.8 setmiterlimit +% Default Line colors +/LCw {1 1 1} def +/LCb {0 0 0} def +/LCa {0 0 0} def +/LC0 {1 0 0} def +/LC1 {0 1 0} def +/LC2 {0 0 1} def +/LC3 {1 0 1} def +/LC4 {0 1 1} def +/LC5 {1 1 0} def +/LC6 {0 0 0} def +/LC7 {1 0.3 0} def +/LC8 {0.5 0.5 0.5} def +% Default Line Types +/LTw {PL [] 1 setgray} def +/LTb {BL [] LCb DL} def +/LTa {AL [1 udl mul 2 udl mul] 0 setdash LCa setrgbcolor} def +/LT0 {PL [] LC0 DL} def +/LT1 {PL [4 dl1 2 dl2] LC1 DL} def +/LT2 {PL [2 dl1 3 dl2] LC2 DL} def +/LT3 {PL [1 dl1 1.5 dl2] LC3 DL} def +/LT4 {PL [6 dl1 2 dl2 1 dl1 2 dl2] LC4 DL} def +/LT5 {PL [3 dl1 3 dl2 1 dl1 3 dl2] LC5 DL} def +/LT6 {PL [2 dl1 2 dl2 2 dl1 6 dl2] LC6 DL} def +/LT7 {PL [1 dl1 2 dl2 6 dl1 2 dl2 1 dl1 2 dl2] LC7 DL} def +/LT8 {PL [2 dl1 2 dl2 2 dl1 2 dl2 2 dl1 2 dl2 2 dl1 4 dl2] LC8 DL} def +/Pnt {stroke [] 0 setdash gsave 1 setlinecap M 0 0 V stroke grestore} def +/Dia {stroke [] 0 setdash 2 copy vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt neg vpt V closepath stroke + Pnt} def +/Pls {stroke [] 0 setdash vpt sub M 0 vpt2 V + currentpoint stroke M + hpt neg vpt neg R hpt2 0 V stroke + } def +/Box {stroke [] 0 setdash 2 copy exch hpt sub exch vpt add M + 0 vpt2 neg V hpt2 0 V 0 vpt2 V + hpt2 neg 0 V closepath stroke + Pnt} def +/Crs {stroke [] 0 setdash exch hpt sub exch vpt add M + hpt2 vpt2 neg V currentpoint stroke M + hpt2 neg 0 R hpt2 vpt2 V stroke} def +/TriU {stroke [] 0 setdash 2 copy vpt 1.12 mul add M + hpt neg vpt -1.62 mul V + hpt 2 mul 0 V + hpt neg vpt 1.62 mul V closepath stroke + Pnt} def +/Star {2 copy Pls Crs} def +/BoxF {stroke [] 0 setdash exch hpt sub exch vpt add M + 0 vpt2 neg V hpt2 0 V 0 vpt2 V + hpt2 neg 0 V closepath fill} def +/TriUF {stroke [] 0 setdash vpt 1.12 mul add M + hpt neg vpt -1.62 mul V + hpt 2 mul 0 V + hpt neg vpt 1.62 mul V closepath fill} def +/TriD {stroke [] 0 setdash 2 copy vpt 1.12 mul sub M + hpt neg vpt 1.62 mul V + hpt 2 mul 0 V + hpt neg vpt -1.62 mul V closepath stroke + Pnt} def +/TriDF {stroke [] 0 setdash vpt 1.12 mul sub M + hpt neg vpt 1.62 mul V + hpt 2 mul 0 V + hpt neg vpt -1.62 mul V closepath fill} def +/DiaF {stroke [] 0 setdash vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt neg vpt V closepath fill} def +/Pent {stroke [] 0 setdash 2 copy gsave + translate 0 hpt M 4 {72 rotate 0 hpt L} repeat + closepath stroke grestore Pnt} def +/PentF {stroke [] 0 setdash gsave + translate 0 hpt M 4 {72 rotate 0 hpt L} repeat + closepath fill grestore} def +/Circle {stroke [] 0 setdash 2 copy + hpt 0 360 arc stroke Pnt} def +/CircleF {stroke [] 0 setdash hpt 0 360 arc fill} def +/C0 {BL [] 0 setdash 2 copy moveto vpt 90 450 arc} bind def +/C1 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 90 arc closepath fill + vpt 0 360 arc closepath} bind def +/C2 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 90 180 arc closepath fill + vpt 0 360 arc closepath} bind def +/C3 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 180 arc closepath fill + vpt 0 360 arc closepath} bind def +/C4 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 180 270 arc closepath fill + vpt 0 360 arc closepath} bind def +/C5 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 90 arc + 2 copy moveto + 2 copy vpt 180 270 arc closepath fill + vpt 0 360 arc} bind def +/C6 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 90 270 arc closepath fill + vpt 0 360 arc closepath} bind def +/C7 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 270 arc closepath fill + vpt 0 360 arc closepath} bind def +/C8 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 270 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C9 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 270 450 arc closepath fill + vpt 0 360 arc closepath} bind def +/C10 {BL [] 0 setdash 2 copy 2 copy moveto vpt 270 360 arc closepath fill + 2 copy moveto + 2 copy vpt 90 180 arc closepath fill + vpt 0 360 arc closepath} bind def +/C11 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 180 arc closepath fill + 2 copy moveto + 2 copy vpt 270 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C12 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 180 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C13 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 90 arc closepath fill + 2 copy moveto + 2 copy vpt 180 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C14 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 90 360 arc closepath fill + vpt 0 360 arc} bind def +/C15 {BL [] 0 setdash 2 copy vpt 0 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/Rec {newpath 4 2 roll moveto 1 index 0 rlineto 0 exch rlineto + neg 0 rlineto closepath} bind def +/Square {dup Rec} bind def +/Bsquare {vpt sub exch vpt sub exch vpt2 Square} bind def +/S0 {BL [] 0 setdash 2 copy moveto 0 vpt rlineto BL Bsquare} bind def +/S1 {BL [] 0 setdash 2 copy vpt Square fill Bsquare} bind def +/S2 {BL [] 0 setdash 2 copy exch vpt sub exch vpt Square fill Bsquare} bind def +/S3 {BL [] 0 setdash 2 copy exch vpt sub exch vpt2 vpt Rec fill Bsquare} bind def +/S4 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt Square fill Bsquare} bind def +/S5 {BL [] 0 setdash 2 copy 2 copy vpt Square fill + exch vpt sub exch vpt sub vpt Square fill Bsquare} bind def +/S6 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt vpt2 Rec fill Bsquare} bind def +/S7 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt vpt2 Rec fill + 2 copy vpt Square fill Bsquare} bind def +/S8 {BL [] 0 setdash 2 copy vpt sub vpt Square fill Bsquare} bind def +/S9 {BL [] 0 setdash 2 copy vpt sub vpt vpt2 Rec fill Bsquare} bind def +/S10 {BL [] 0 setdash 2 copy vpt sub vpt Square fill 2 copy exch vpt sub exch vpt Square fill + Bsquare} bind def +/S11 {BL [] 0 setdash 2 copy vpt sub vpt Square fill 2 copy exch vpt sub exch vpt2 vpt Rec fill + Bsquare} bind def +/S12 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill Bsquare} bind def +/S13 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill + 2 copy vpt Square fill Bsquare} bind def +/S14 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill + 2 copy exch vpt sub exch vpt Square fill Bsquare} bind def +/S15 {BL [] 0 setdash 2 copy Bsquare fill Bsquare} bind def +/D0 {gsave translate 45 rotate 0 0 S0 stroke grestore} bind def +/D1 {gsave translate 45 rotate 0 0 S1 stroke grestore} bind def +/D2 {gsave translate 45 rotate 0 0 S2 stroke grestore} bind def +/D3 {gsave translate 45 rotate 0 0 S3 stroke grestore} bind def +/D4 {gsave translate 45 rotate 0 0 S4 stroke grestore} bind def +/D5 {gsave translate 45 rotate 0 0 S5 stroke grestore} bind def +/D6 {gsave translate 45 rotate 0 0 S6 stroke grestore} bind def +/D7 {gsave translate 45 rotate 0 0 S7 stroke grestore} bind def +/D8 {gsave translate 45 rotate 0 0 S8 stroke grestore} bind def +/D9 {gsave translate 45 rotate 0 0 S9 stroke grestore} bind def +/D10 {gsave translate 45 rotate 0 0 S10 stroke grestore} bind def +/D11 {gsave translate 45 rotate 0 0 S11 stroke grestore} bind def +/D12 {gsave translate 45 rotate 0 0 S12 stroke grestore} bind def +/D13 {gsave translate 45 rotate 0 0 S13 stroke grestore} bind def +/D14 {gsave translate 45 rotate 0 0 S14 stroke grestore} bind def +/D15 {gsave translate 45 rotate 0 0 S15 stroke grestore} bind def +/DiaE {stroke [] 0 setdash vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt neg vpt V closepath stroke} def +/BoxE {stroke [] 0 setdash exch hpt sub exch vpt add M + 0 vpt2 neg V hpt2 0 V 0 vpt2 V + hpt2 neg 0 V closepath stroke} def +/TriUE {stroke [] 0 setdash vpt 1.12 mul add M + hpt neg vpt -1.62 mul V + hpt 2 mul 0 V + hpt neg vpt 1.62 mul V closepath stroke} def +/TriDE {stroke [] 0 setdash vpt 1.12 mul sub M + hpt neg vpt 1.62 mul V + hpt 2 mul 0 V + hpt neg vpt -1.62 mul V closepath stroke} def +/PentE {stroke [] 0 setdash gsave + translate 0 hpt M 4 {72 rotate 0 hpt L} repeat + closepath stroke grestore} def +/CircE {stroke [] 0 setdash + hpt 0 360 arc stroke} def +/Opaque {gsave closepath 1 setgray fill grestore 0 setgray closepath} def +/DiaW {stroke [] 0 setdash vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt neg vpt V Opaque stroke} def +/BoxW {stroke [] 0 setdash exch hpt sub exch vpt add M + 0 vpt2 neg V hpt2 0 V 0 vpt2 V + hpt2 neg 0 V Opaque stroke} def +/TriUW {stroke [] 0 setdash vpt 1.12 mul add M + hpt neg vpt -1.62 mul V + hpt 2 mul 0 V + hpt neg vpt 1.62 mul V Opaque stroke} def +/TriDW {stroke [] 0 setdash vpt 1.12 mul sub M + hpt neg vpt 1.62 mul V + hpt 2 mul 0 V + hpt neg vpt -1.62 mul V Opaque stroke} def +/PentW {stroke [] 0 setdash gsave + translate 0 hpt M 4 {72 rotate 0 hpt L} repeat + Opaque stroke grestore} def +/CircW {stroke [] 0 setdash + hpt 0 360 arc Opaque stroke} def +/BoxFill {gsave Rec 1 setgray fill grestore} def +/Density { + /Fillden exch def + currentrgbcolor + /ColB exch def /ColG exch def /ColR exch def + /ColR ColR Fillden mul Fillden sub 1 add def + /ColG ColG Fillden mul Fillden sub 1 add def + /ColB ColB Fillden mul Fillden sub 1 add def + ColR ColG ColB setrgbcolor} def +/BoxColFill {gsave Rec PolyFill} def +/PolyFill {gsave Density fill grestore grestore} def +/h {rlineto rlineto rlineto gsave closepath fill grestore} bind def +% +% PostScript Level 1 Pattern Fill routine for rectangles +% Usage: x y w h s a XX PatternFill +% x,y = lower left corner of box to be filled +% w,h = width and height of box +% a = angle in degrees between lines and x-axis +% XX = 0/1 for no/yes cross-hatch +% +/PatternFill {gsave /PFa [ 9 2 roll ] def + PFa 0 get PFa 2 get 2 div add PFa 1 get PFa 3 get 2 div add translate + PFa 2 get -2 div PFa 3 get -2 div PFa 2 get PFa 3 get Rec + TransparentPatterns {} {gsave 1 setgray fill grestore} ifelse + clip + currentlinewidth 0.5 mul setlinewidth + /PFs PFa 2 get dup mul PFa 3 get dup mul add sqrt def + 0 0 M PFa 5 get rotate PFs -2 div dup translate + 0 1 PFs PFa 4 get div 1 add floor cvi + {PFa 4 get mul 0 M 0 PFs V} for + 0 PFa 6 get ne { + 0 1 PFs PFa 4 get div 1 add floor cvi + {PFa 4 get mul 0 2 1 roll M PFs 0 V} for + } if + stroke grestore} def +% +/languagelevel where + {pop languagelevel} {1} ifelse + 2 lt + {/InterpretLevel1 true def} + {/InterpretLevel1 Level1 def} + ifelse +% +% PostScript level 2 pattern fill definitions +% +/Level2PatternFill { +/Tile8x8 {/PaintType 2 /PatternType 1 /TilingType 1 /BBox [0 0 8 8] /XStep 8 /YStep 8} + bind def +/KeepColor {currentrgbcolor [/Pattern /DeviceRGB] setcolorspace} bind def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 8 8 L 0 8 M 8 0 L stroke} +>> matrix makepattern +/Pat1 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 8 8 L 0 8 M 8 0 L stroke + 0 4 M 4 8 L 8 4 L 4 0 L 0 4 L stroke} +>> matrix makepattern +/Pat2 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 0 8 L + 8 8 L 8 0 L 0 0 L fill} +>> matrix makepattern +/Pat3 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -4 8 M 8 -4 L + 0 12 M 12 0 L stroke} +>> matrix makepattern +/Pat4 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -4 0 M 8 12 L + 0 -4 M 12 8 L stroke} +>> matrix makepattern +/Pat5 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -2 8 M 4 -4 L + 0 12 M 8 -4 L 4 12 M 10 0 L stroke} +>> matrix makepattern +/Pat6 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -2 0 M 4 12 L + 0 -4 M 8 12 L 4 -4 M 10 8 L stroke} +>> matrix makepattern +/Pat7 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 8 -2 M -4 4 L + 12 0 M -4 8 L 12 4 M 0 10 L stroke} +>> matrix makepattern +/Pat8 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 -2 M 12 4 L + -4 0 M 12 8 L -4 4 M 8 10 L stroke} +>> matrix makepattern +/Pat9 exch def +/Pattern1 {PatternBgnd KeepColor Pat1 setpattern} bind def +/Pattern2 {PatternBgnd KeepColor Pat2 setpattern} bind def +/Pattern3 {PatternBgnd KeepColor Pat3 setpattern} bind def +/Pattern4 {PatternBgnd KeepColor Landscape {Pat5} {Pat4} ifelse setpattern} bind def +/Pattern5 {PatternBgnd KeepColor Landscape {Pat4} {Pat5} ifelse setpattern} bind def +/Pattern6 {PatternBgnd KeepColor Landscape {Pat9} {Pat6} ifelse setpattern} bind def +/Pattern7 {PatternBgnd KeepColor Landscape {Pat8} {Pat7} ifelse setpattern} bind def +} def +% +% +%End of PostScript Level 2 code +% +/PatternBgnd { + TransparentPatterns {} {gsave 1 setgray fill grestore} ifelse +} def +% +% Substitute for Level 2 pattern fill codes with +% grayscale if Level 2 support is not selected. +% +/Level1PatternFill { +/Pattern1 {0.250 Density} bind def +/Pattern2 {0.500 Density} bind def +/Pattern3 {0.750 Density} bind def +/Pattern4 {0.125 Density} bind def +/Pattern5 {0.375 Density} bind def +/Pattern6 {0.625 Density} bind def +/Pattern7 {0.875 Density} bind def +} def +% +% Now test for support of Level 2 code +% +Level1 {Level1PatternFill} {Level2PatternFill} ifelse +% +/Symbol-Oblique /Symbol findfont [1 0 .167 1 0 0] makefont +dup length dict begin {1 index /FID eq {pop pop} {def} ifelse} forall +currentdict end definefont pop +% +% Encoding for ISO-8859-1 (also called Latin1) +% +/reencodeISO { +dup dup findfont dup length dict begin +{ 1 index /FID ne { def }{ pop pop } ifelse } forall +currentdict /CharStrings known { + CharStrings /Idieresis known { + /Encoding ISOLatin1Encoding def } if +} if +currentdict end definefont +} def +/ISOLatin1Encoding [ +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/space/exclam/quotedbl/numbersign/dollar/percent/ampersand/quoteright +/parenleft/parenright/asterisk/plus/comma/minus/period/slash +/zero/one/two/three/four/five/six/seven/eight/nine/colon/semicolon +/less/equal/greater/question/at/A/B/C/D/E/F/G/H/I/J/K/L/M/N +/O/P/Q/R/S/T/U/V/W/X/Y/Z/bracketleft/backslash/bracketright +/asciicircum/underscore/quoteleft/a/b/c/d/e/f/g/h/i/j/k/l/m +/n/o/p/q/r/s/t/u/v/w/x/y/z/braceleft/bar/braceright/asciitilde +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/dotlessi/grave/acute/circumflex/tilde/macron/breve +/dotaccent/dieresis/.notdef/ring/cedilla/.notdef/hungarumlaut +/ogonek/caron/space/exclamdown/cent/sterling/currency/yen/brokenbar +/section/dieresis/copyright/ordfeminine/guillemotleft/logicalnot +/hyphen/registered/macron/degree/plusminus/twosuperior/threesuperior +/acute/mu/paragraph/periodcentered/cedilla/onesuperior/ordmasculine +/guillemotright/onequarter/onehalf/threequarters/questiondown +/Agrave/Aacute/Acircumflex/Atilde/Adieresis/Aring/AE/Ccedilla +/Egrave/Eacute/Ecircumflex/Edieresis/Igrave/Iacute/Icircumflex +/Idieresis/Eth/Ntilde/Ograve/Oacute/Ocircumflex/Otilde/Odieresis +/multiply/Oslash/Ugrave/Uacute/Ucircumflex/Udieresis/Yacute +/Thorn/germandbls/agrave/aacute/acircumflex/atilde/adieresis +/aring/ae/ccedilla/egrave/eacute/ecircumflex/edieresis/igrave +/iacute/icircumflex/idieresis/eth/ntilde/ograve/oacute/ocircumflex +/otilde/odieresis/divide/oslash/ugrave/uacute/ucircumflex/udieresis +/yacute/thorn/ydieresis +] def +/MFshow { + { dup 5 get 3 ge + { 5 get 3 eq {gsave} {grestore} ifelse } + {dup dup 0 get findfont exch 1 get scalefont setfont + [ currentpoint ] exch dup 2 get 0 exch R dup 5 get 2 ne {dup dup 6 + get exch 4 get {Gshow} {stringwidth pop 0 R} ifelse }if dup 5 get 0 eq + {dup 3 get {2 get neg 0 exch R pop} {pop aload pop M} ifelse} {dup 5 + get 1 eq {dup 2 get exch dup 3 get exch 6 get stringwidth pop -2 div + dup 0 R} {dup 6 get stringwidth pop -2 div 0 R 6 get + show 2 index {aload pop M neg 3 -1 roll neg R pop pop} {pop pop pop + pop aload pop M} ifelse }ifelse }ifelse } + ifelse } + forall} def +/Gswidth {dup type /stringtype eq {stringwidth} {pop (n) stringwidth} ifelse} def +/MFwidth {0 exch { dup 5 get 3 ge { 5 get 3 eq { 0 } { pop } ifelse } + {dup 3 get{dup dup 0 get findfont exch 1 get scalefont setfont + 6 get Gswidth pop add} {pop} ifelse} ifelse} forall} def +/MLshow { currentpoint stroke M + 0 exch R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/MRshow { currentpoint stroke M + exch dup MFwidth neg 3 -1 roll R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/MCshow { currentpoint stroke M + exch dup MFwidth -2 div 3 -1 roll R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/XYsave { [( ) 1 2 true false 3 ()] } bind def +/XYrestore { [( ) 1 2 true false 4 ()] } bind def +/Helvetica reencodeISO def +Level1 SuppressPDFMark or +{} { +/SDict 10 dict def +systemdict /pdfmark known not { + userdict /pdfmark systemdict /cleartomark get put +} if +SDict begin [ + /Title () + /Subject (gnuplot plot) + /Creator (gnuplot 4.6 patchlevel 6) + /Author (afanfakh) +% /Producer (gnuplot) +% /Keywords () + /CreationDate (Thu Oct 22 12:36:19 2015) + /DOCINFO pdfmark +end +} ifelse +end +%%EndProlog +%%Page: 1 1 +gnudict begin +gsave +doclip +50 50 translate +0.100 0.100 scale +0 setgray +newpath +(Helvetica) findfont 110 scalefont setfont +BackgroundColor 0 lt 3 1 roll 0 lt exch 0 lt or or not {gsave BackgroundColor C clippath fill grestore} if +1.000 UL +LTb +473 352 M +63 0 V +4305 0 R +-63 0 V +stroke +407 352 M +[ [(Helvetica) 150.0 0.0 true true 0 ( 0)] +] -50.0 MRshow +1.000 UL +LTb +473 421 M +31 0 V +4337 0 R +-31 0 V +473 490 M +31 0 V +4337 0 R +-31 0 V +473 560 M +31 0 V +4337 0 R +-31 0 V +473 629 M +31 0 V +4337 0 R +-31 0 V +473 698 M +63 0 V +4305 0 R +-63 0 V +stroke +407 698 M +[ [(Helvetica) 150.0 0.0 true true 0 ( 5)] +] -50.0 MRshow +1.000 UL +LTb +473 767 M +31 0 V +4337 0 R +-31 0 V +473 837 M +31 0 V +4337 0 R +-31 0 V +473 906 M +31 0 V +4337 0 R +-31 0 V +473 975 M +31 0 V +4337 0 R +-31 0 V +473 1044 M +63 0 V +4305 0 R +-63 0 V +stroke +407 1044 M +[ 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exch def hpt_ mul /hpt exch def + /hpt2 hpt 2 mul def /vpt2 vpt 2 mul def} def +/DL {Color {setrgbcolor Solid {pop []} if 0 setdash} + {pop pop pop 0 setgray Solid {pop []} if 0 setdash} ifelse} def +/BL {stroke userlinewidth 2 mul setlinewidth + Rounded {1 setlinejoin 1 setlinecap} if} def +/AL {stroke userlinewidth 2 div setlinewidth + Rounded {1 setlinejoin 1 setlinecap} if} def +/UL {dup gnulinewidth mul /userlinewidth exch def + dup 1 lt {pop 1} if 10 mul /udl exch def} def +/PL {stroke userlinewidth setlinewidth + Rounded {1 setlinejoin 1 setlinecap} if} def +3.8 setmiterlimit +% Default Line colors +/LCw {1 1 1} def +/LCb {0 0 0} def +/LCa {0 0 0} def +/LC0 {1 0 0} def +/LC1 {0 1 0} def +/LC2 {0 0 1} def +/LC3 {1 0 1} def +/LC4 {0 1 1} def +/LC5 {1 1 0} def +/LC6 {0 0 0} def +/LC7 {1 0.3 0} def +/LC8 {0.5 0.5 0.5} def +% Default Line Types +/LTw {PL [] 1 setgray} def +/LTb {BL [] LCb DL} def +/LTa {AL [1 udl mul 2 udl mul] 0 setdash LCa setrgbcolor} def +/LT0 {PL [] LC0 DL} def +/LT1 {PL [4 dl1 2 dl2] LC1 DL} def +/LT2 {PL [2 dl1 3 dl2] LC2 DL} def +/LT3 {PL [1 dl1 1.5 dl2] LC3 DL} def +/LT4 {PL [6 dl1 2 dl2 1 dl1 2 dl2] LC4 DL} def +/LT5 {PL [3 dl1 3 dl2 1 dl1 3 dl2] LC5 DL} def +/LT6 {PL [2 dl1 2 dl2 2 dl1 6 dl2] LC6 DL} def +/LT7 {PL [1 dl1 2 dl2 6 dl1 2 dl2 1 dl1 2 dl2] LC7 DL} def +/LT8 {PL [2 dl1 2 dl2 2 dl1 2 dl2 2 dl1 2 dl2 2 dl1 4 dl2] LC8 DL} def +/Pnt {stroke [] 0 setdash gsave 1 setlinecap M 0 0 V stroke grestore} def +/Dia {stroke [] 0 setdash 2 copy vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt neg vpt V closepath stroke + Pnt} def +/Pls {stroke [] 0 setdash vpt sub M 0 vpt2 V + currentpoint stroke M + hpt neg vpt neg R hpt2 0 V stroke + } def +/Box {stroke [] 0 setdash 2 copy exch hpt sub exch vpt add M + 0 vpt2 neg V hpt2 0 V 0 vpt2 V + hpt2 neg 0 V closepath stroke + Pnt} def +/Crs {stroke [] 0 setdash exch hpt sub exch vpt add M + hpt2 vpt2 neg V currentpoint stroke M + hpt2 neg 0 R hpt2 vpt2 V stroke} def +/TriU {stroke [] 0 setdash 2 copy vpt 1.12 mul add M + hpt neg vpt -1.62 mul V + hpt 2 mul 0 V + hpt neg vpt 1.62 mul V closepath stroke + Pnt} def +/Star {2 copy Pls Crs} def +/BoxF {stroke [] 0 setdash exch hpt sub exch vpt add M + 0 vpt2 neg V hpt2 0 V 0 vpt2 V + hpt2 neg 0 V closepath fill} def +/TriUF {stroke [] 0 setdash vpt 1.12 mul add M + hpt neg vpt -1.62 mul V + hpt 2 mul 0 V + hpt neg vpt 1.62 mul V closepath fill} def +/TriD {stroke [] 0 setdash 2 copy vpt 1.12 mul sub M + hpt neg vpt 1.62 mul V + hpt 2 mul 0 V + hpt neg vpt -1.62 mul V closepath stroke + Pnt} def +/TriDF {stroke [] 0 setdash vpt 1.12 mul sub M + hpt neg vpt 1.62 mul V + hpt 2 mul 0 V + hpt neg vpt -1.62 mul V closepath fill} def +/DiaF {stroke [] 0 setdash vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt neg vpt V closepath fill} def +/Pent {stroke [] 0 setdash 2 copy gsave + translate 0 hpt M 4 {72 rotate 0 hpt L} repeat + closepath stroke grestore Pnt} def +/PentF {stroke [] 0 setdash gsave + translate 0 hpt M 4 {72 rotate 0 hpt L} repeat + closepath fill grestore} def +/Circle {stroke [] 0 setdash 2 copy + hpt 0 360 arc stroke Pnt} def +/CircleF {stroke [] 0 setdash hpt 0 360 arc fill} def +/C0 {BL [] 0 setdash 2 copy moveto vpt 90 450 arc} bind def +/C1 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 90 arc closepath fill + vpt 0 360 arc closepath} bind def +/C2 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 90 180 arc closepath fill + vpt 0 360 arc closepath} bind def +/C3 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 180 arc closepath fill + vpt 0 360 arc closepath} bind def +/C4 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 180 270 arc closepath fill + vpt 0 360 arc closepath} bind def +/C5 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 90 arc + 2 copy moveto + 2 copy vpt 180 270 arc closepath fill + vpt 0 360 arc} bind def +/C6 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 90 270 arc closepath fill + vpt 0 360 arc closepath} bind def +/C7 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 270 arc closepath fill + vpt 0 360 arc closepath} bind def +/C8 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 270 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C9 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 270 450 arc closepath fill + vpt 0 360 arc closepath} bind def +/C10 {BL [] 0 setdash 2 copy 2 copy moveto vpt 270 360 arc closepath fill + 2 copy moveto + 2 copy vpt 90 180 arc closepath fill + vpt 0 360 arc closepath} bind def +/C11 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 180 arc closepath fill + 2 copy moveto + 2 copy vpt 270 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C12 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 180 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C13 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 90 arc closepath fill + 2 copy moveto + 2 copy vpt 180 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C14 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 90 360 arc closepath fill + vpt 0 360 arc} bind def +/C15 {BL [] 0 setdash 2 copy vpt 0 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/Rec {newpath 4 2 roll moveto 1 index 0 rlineto 0 exch rlineto + neg 0 rlineto closepath} bind def +/Square {dup Rec} bind def +/Bsquare {vpt sub exch vpt sub exch vpt2 Square} bind def +/S0 {BL [] 0 setdash 2 copy moveto 0 vpt rlineto BL Bsquare} bind def +/S1 {BL [] 0 setdash 2 copy vpt Square fill Bsquare} bind def +/S2 {BL [] 0 setdash 2 copy exch vpt sub exch vpt Square fill Bsquare} bind def +/S3 {BL [] 0 setdash 2 copy exch vpt sub exch vpt2 vpt Rec fill Bsquare} bind def +/S4 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt Square fill Bsquare} bind def +/S5 {BL [] 0 setdash 2 copy 2 copy vpt Square fill + exch vpt sub exch vpt sub vpt Square fill Bsquare} bind def +/S6 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt vpt2 Rec fill Bsquare} bind def +/S7 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt vpt2 Rec fill + 2 copy vpt Square fill Bsquare} bind def +/S8 {BL [] 0 setdash 2 copy vpt sub vpt Square fill Bsquare} bind def +/S9 {BL [] 0 setdash 2 copy vpt sub vpt vpt2 Rec fill Bsquare} bind def +/S10 {BL [] 0 setdash 2 copy vpt sub vpt Square fill 2 copy exch vpt sub exch vpt Square fill + Bsquare} bind def +/S11 {BL [] 0 setdash 2 copy vpt sub vpt Square fill 2 copy exch vpt sub exch vpt2 vpt Rec fill + Bsquare} bind def +/S12 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill Bsquare} bind def +/S13 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill + 2 copy vpt Square fill Bsquare} bind def +/S14 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill + 2 copy exch vpt sub exch vpt Square fill Bsquare} bind def +/S15 {BL [] 0 setdash 2 copy Bsquare fill Bsquare} bind def +/D0 {gsave translate 45 rotate 0 0 S0 stroke grestore} bind def +/D1 {gsave translate 45 rotate 0 0 S1 stroke grestore} bind def +/D2 {gsave translate 45 rotate 0 0 S2 stroke grestore} bind def +/D3 {gsave translate 45 rotate 0 0 S3 stroke grestore} bind def +/D4 {gsave translate 45 rotate 0 0 S4 stroke grestore} bind def +/D5 {gsave translate 45 rotate 0 0 S5 stroke grestore} bind def +/D6 {gsave translate 45 rotate 0 0 S6 stroke grestore} bind def +/D7 {gsave translate 45 rotate 0 0 S7 stroke grestore} bind def +/D8 {gsave translate 45 rotate 0 0 S8 stroke grestore} bind def +/D9 {gsave translate 45 rotate 0 0 S9 stroke grestore} bind def +/D10 {gsave translate 45 rotate 0 0 S10 stroke grestore} bind def +/D11 {gsave translate 45 rotate 0 0 S11 stroke grestore} bind def +/D12 {gsave translate 45 rotate 0 0 S12 stroke grestore} bind def +/D13 {gsave translate 45 rotate 0 0 S13 stroke grestore} bind def +/D14 {gsave translate 45 rotate 0 0 S14 stroke grestore} bind def +/D15 {gsave translate 45 rotate 0 0 S15 stroke grestore} bind def +/DiaE {stroke [] 0 setdash vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt neg vpt V closepath stroke} def +/BoxE {stroke [] 0 setdash exch hpt sub exch vpt add M + 0 vpt2 neg V hpt2 0 V 0 vpt2 V + hpt2 neg 0 V closepath stroke} def +/TriUE {stroke [] 0 setdash vpt 1.12 mul add M + hpt neg vpt -1.62 mul V + hpt 2 mul 0 V + hpt neg vpt 1.62 mul V closepath stroke} def +/TriDE {stroke [] 0 setdash vpt 1.12 mul sub M + hpt neg vpt 1.62 mul V + hpt 2 mul 0 V + hpt neg vpt -1.62 mul V closepath stroke} def +/PentE {stroke [] 0 setdash gsave + translate 0 hpt M 4 {72 rotate 0 hpt L} repeat + closepath stroke grestore} def +/CircE {stroke [] 0 setdash + hpt 0 360 arc stroke} def +/Opaque {gsave closepath 1 setgray fill grestore 0 setgray closepath} def +/DiaW {stroke [] 0 setdash vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt neg vpt V Opaque stroke} def +/BoxW {stroke [] 0 setdash exch hpt sub exch vpt add M + 0 vpt2 neg V hpt2 0 V 0 vpt2 V + hpt2 neg 0 V Opaque stroke} def +/TriUW {stroke [] 0 setdash vpt 1.12 mul add M + hpt neg vpt -1.62 mul V + hpt 2 mul 0 V + hpt neg vpt 1.62 mul V Opaque stroke} def +/TriDW {stroke [] 0 setdash vpt 1.12 mul sub M + hpt neg vpt 1.62 mul V + hpt 2 mul 0 V + hpt neg vpt -1.62 mul V Opaque stroke} def +/PentW {stroke [] 0 setdash gsave + translate 0 hpt M 4 {72 rotate 0 hpt L} repeat + Opaque stroke grestore} def +/CircW {stroke [] 0 setdash + hpt 0 360 arc Opaque stroke} def +/BoxFill {gsave Rec 1 setgray fill grestore} def +/Density { + /Fillden exch def + currentrgbcolor + /ColB exch def /ColG exch def /ColR exch def + /ColR ColR Fillden mul Fillden sub 1 add def + /ColG ColG Fillden mul Fillden sub 1 add def + /ColB ColB Fillden mul Fillden sub 1 add def + ColR ColG ColB setrgbcolor} def +/BoxColFill {gsave Rec PolyFill} def +/PolyFill {gsave Density fill grestore grestore} def +/h {rlineto rlineto rlineto gsave closepath fill grestore} bind def +% +% PostScript Level 1 Pattern Fill routine for rectangles +% Usage: x y w h s a XX PatternFill +% x,y = lower left corner of box to be filled +% w,h = width and height of box +% a = angle in degrees between lines and x-axis +% XX = 0/1 for no/yes cross-hatch +% +/PatternFill {gsave /PFa [ 9 2 roll ] def + PFa 0 get PFa 2 get 2 div add PFa 1 get PFa 3 get 2 div add translate + PFa 2 get -2 div PFa 3 get -2 div PFa 2 get PFa 3 get Rec + TransparentPatterns {} {gsave 1 setgray fill grestore} ifelse + clip + currentlinewidth 0.5 mul setlinewidth + /PFs PFa 2 get dup mul PFa 3 get dup mul add sqrt def + 0 0 M PFa 5 get rotate PFs -2 div dup translate + 0 1 PFs PFa 4 get div 1 add floor cvi + {PFa 4 get mul 0 M 0 PFs V} for + 0 PFa 6 get ne { + 0 1 PFs PFa 4 get div 1 add floor cvi + {PFa 4 get mul 0 2 1 roll M PFs 0 V} for + } if + stroke grestore} def +% +/languagelevel where + {pop languagelevel} {1} ifelse + 2 lt + {/InterpretLevel1 true def} + {/InterpretLevel1 Level1 def} + ifelse +% +% PostScript level 2 pattern fill definitions +% +/Level2PatternFill { +/Tile8x8 {/PaintType 2 /PatternType 1 /TilingType 1 /BBox [0 0 8 8] /XStep 8 /YStep 8} + bind def +/KeepColor {currentrgbcolor [/Pattern /DeviceRGB] setcolorspace} bind def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 8 8 L 0 8 M 8 0 L stroke} +>> matrix makepattern +/Pat1 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 8 8 L 0 8 M 8 0 L stroke + 0 4 M 4 8 L 8 4 L 4 0 L 0 4 L stroke} +>> matrix makepattern +/Pat2 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 0 8 L + 8 8 L 8 0 L 0 0 L fill} +>> matrix makepattern +/Pat3 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -4 8 M 8 -4 L + 0 12 M 12 0 L stroke} +>> matrix makepattern +/Pat4 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -4 0 M 8 12 L + 0 -4 M 12 8 L stroke} +>> matrix makepattern +/Pat5 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -2 8 M 4 -4 L + 0 12 M 8 -4 L 4 12 M 10 0 L stroke} +>> matrix makepattern +/Pat6 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -2 0 M 4 12 L + 0 -4 M 8 12 L 4 -4 M 10 8 L stroke} +>> matrix makepattern +/Pat7 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 8 -2 M -4 4 L + 12 0 M -4 8 L 12 4 M 0 10 L stroke} +>> matrix makepattern +/Pat8 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 -2 M 12 4 L + -4 0 M 12 8 L -4 4 M 8 10 L stroke} +>> matrix makepattern +/Pat9 exch def +/Pattern1 {PatternBgnd KeepColor Pat1 setpattern} bind def +/Pattern2 {PatternBgnd KeepColor Pat2 setpattern} bind def +/Pattern3 {PatternBgnd KeepColor Pat3 setpattern} bind def +/Pattern4 {PatternBgnd KeepColor Landscape {Pat5} {Pat4} ifelse setpattern} bind def +/Pattern5 {PatternBgnd KeepColor Landscape {Pat4} {Pat5} ifelse setpattern} bind def +/Pattern6 {PatternBgnd KeepColor Landscape {Pat9} {Pat6} ifelse setpattern} bind def +/Pattern7 {PatternBgnd KeepColor Landscape {Pat8} {Pat7} ifelse setpattern} bind def +} def +% +% +%End of PostScript Level 2 code +% +/PatternBgnd { + TransparentPatterns {} {gsave 1 setgray fill grestore} ifelse +} def +% +% Substitute for Level 2 pattern fill codes with +% grayscale if Level 2 support is not selected. +% +/Level1PatternFill { +/Pattern1 {0.250 Density} bind def +/Pattern2 {0.500 Density} bind def +/Pattern3 {0.750 Density} bind def +/Pattern4 {0.125 Density} bind def +/Pattern5 {0.375 Density} bind def +/Pattern6 {0.625 Density} bind def +/Pattern7 {0.875 Density} bind def +} def +% +% Now test for support of Level 2 code +% +Level1 {Level1PatternFill} {Level2PatternFill} ifelse +% +/Symbol-Oblique /Symbol findfont [1 0 .167 1 0 0] makefont +dup length dict begin {1 index /FID eq {pop pop} {def} ifelse} forall +currentdict end definefont pop +% +% Encoding for ISO-8859-1 (also called Latin1) +% +/reencodeISO { +dup dup findfont dup length dict begin +{ 1 index /FID ne { def }{ pop pop } ifelse } forall +currentdict /CharStrings known { + CharStrings /Idieresis known { + /Encoding ISOLatin1Encoding def } if +} if +currentdict end definefont +} def +/ISOLatin1Encoding [ +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/space/exclam/quotedbl/numbersign/dollar/percent/ampersand/quoteright +/parenleft/parenright/asterisk/plus/comma/minus/period/slash +/zero/one/two/three/four/five/six/seven/eight/nine/colon/semicolon +/less/equal/greater/question/at/A/B/C/D/E/F/G/H/I/J/K/L/M/N +/O/P/Q/R/S/T/U/V/W/X/Y/Z/bracketleft/backslash/bracketright +/asciicircum/underscore/quoteleft/a/b/c/d/e/f/g/h/i/j/k/l/m +/n/o/p/q/r/s/t/u/v/w/x/y/z/braceleft/bar/braceright/asciitilde +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/dotlessi/grave/acute/circumflex/tilde/macron/breve +/dotaccent/dieresis/.notdef/ring/cedilla/.notdef/hungarumlaut +/ogonek/caron/space/exclamdown/cent/sterling/currency/yen/brokenbar +/section/dieresis/copyright/ordfeminine/guillemotleft/logicalnot +/hyphen/registered/macron/degree/plusminus/twosuperior/threesuperior +/acute/mu/paragraph/periodcentered/cedilla/onesuperior/ordmasculine +/guillemotright/onequarter/onehalf/threequarters/questiondown +/Agrave/Aacute/Acircumflex/Atilde/Adieresis/Aring/AE/Ccedilla +/Egrave/Eacute/Ecircumflex/Edieresis/Igrave/Iacute/Icircumflex +/Idieresis/Eth/Ntilde/Ograve/Oacute/Ocircumflex/Otilde/Odieresis +/multiply/Oslash/Ugrave/Uacute/Ucircumflex/Udieresis/Yacute +/Thorn/germandbls/agrave/aacute/acircumflex/atilde/adieresis +/aring/ae/ccedilla/egrave/eacute/ecircumflex/edieresis/igrave +/iacute/icircumflex/idieresis/eth/ntilde/ograve/oacute/ocircumflex +/otilde/odieresis/divide/oslash/ugrave/uacute/ucircumflex/udieresis +/yacute/thorn/ydieresis +] def +/MFshow { + { dup 5 get 3 ge + { 5 get 3 eq {gsave} {grestore} ifelse } + {dup dup 0 get findfont exch 1 get scalefont setfont + [ currentpoint ] exch dup 2 get 0 exch R dup 5 get 2 ne {dup dup 6 + get exch 4 get {Gshow} {stringwidth pop 0 R} ifelse }if dup 5 get 0 eq + {dup 3 get {2 get neg 0 exch R pop} {pop aload pop M} ifelse} {dup 5 + get 1 eq {dup 2 get exch dup 3 get exch 6 get stringwidth pop -2 div + dup 0 R} {dup 6 get stringwidth pop -2 div 0 R 6 get + show 2 index {aload pop M neg 3 -1 roll neg R pop pop} {pop pop pop + pop aload pop M} ifelse }ifelse }ifelse } + ifelse } + forall} def +/Gswidth {dup type /stringtype eq {stringwidth} {pop (n) stringwidth} ifelse} def +/MFwidth {0 exch { dup 5 get 3 ge { 5 get 3 eq { 0 } { pop } ifelse } + {dup 3 get{dup dup 0 get findfont exch 1 get scalefont setfont + 6 get Gswidth pop add} {pop} ifelse} ifelse} forall} def +/MLshow { currentpoint stroke M + 0 exch R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/MRshow { currentpoint stroke M + exch dup MFwidth neg 3 -1 roll R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/MCshow { currentpoint stroke M + exch dup MFwidth -2 div 3 -1 roll R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/XYsave { [( ) 1 2 true false 3 ()] } bind def +/XYrestore { [( ) 1 2 true false 4 ()] } bind def +/Helvetica reencodeISO def +Level1 SuppressPDFMark or +{} { +/SDict 10 dict def +systemdict /pdfmark known not { + userdict /pdfmark systemdict /cleartomark get put +} if +SDict begin [ + /Title () + /Subject (gnuplot plot) + /Creator (gnuplot 4.6 patchlevel 6) + /Author (afanfakh) +% /Producer (gnuplot) +% /Keywords () + /CreationDate (Thu Oct 22 17:46:42 2015) + /DOCINFO pdfmark +end +} ifelse +end +%%EndProlog +%%Page: 1 1 +gnudict begin +gsave +doclip +50 50 translate +0.100 0.100 scale +0 setgray +newpath +(Helvetica) findfont 110 scalefont setfont +BackgroundColor 0 lt 3 1 roll 0 lt exch 0 lt or or not {gsave BackgroundColor C clippath fill grestore} if +1.000 UL +LTb +803 352 M +63 0 V +3975 0 R +-63 0 V +stroke +737 352 M +[ [(Helvetica) 150.0 0.0 true true 0 ( 0)] +] -50.0 MRshow +1.000 UL +LTb +803 414 M +31 0 V +4007 0 R +-31 0 V +803 477 M +31 0 V +4007 0 R +-31 0 V +803 539 M +31 0 V +4007 0 R +-31 0 V +803 601 M +31 0 V +4007 0 R +-31 0 V +803 664 M +63 0 V +3975 0 R +-63 0 V +stroke +737 664 M +[ [(Helvetica) 150.0 0.0 true true 0 ( 300000)] +] -50.0 MRshow +1.000 UL +LTb +803 726 M +31 0 V +4007 0 R +-31 0 V +803 788 M +31 0 V +4007 0 R +-31 0 V +803 851 M +31 0 V +4007 0 R +-31 0 V +803 913 M +31 0 V +4007 0 R +-31 0 V +803 975 M +63 0 V +3975 0 R +-63 0 V +stroke +737 975 M +[ [(Helvetica) 150.0 0.0 true true 0 ( 600000)] +] -50.0 MRshow +1.000 UL +LTb +803 1038 M +31 0 V +4007 0 R +-31 0 V +803 1100 M +31 0 V +4007 0 R +-31 0 V +803 1162 M +31 0 V +4007 0 R +-31 0 V +803 1224 M +31 0 V +4007 0 R +-31 0 V +803 1287 M +63 0 V +3975 0 R +-63 0 V +stroke +737 1287 M +[ [(Helvetica) 150.0 0.0 true true 0 ( 900000)] +] -50.0 MRshow +1.000 UL +LTb +803 1349 M +31 0 V +4007 0 R +-31 0 V +803 1411 M +31 0 V +4007 0 R +-31 0 V +803 1474 M +31 0 V +4007 0 R +-31 0 V +803 1536 M +31 0 V +4007 0 R +-31 0 V +803 1598 M +63 0 V 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setlinewidth pop 0 0 M 0 8 L + 8 8 L 8 0 L 0 0 L fill} +>> matrix makepattern +/Pat3 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -4 8 M 8 -4 L + 0 12 M 12 0 L stroke} +>> matrix makepattern +/Pat4 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -4 0 M 8 12 L + 0 -4 M 12 8 L stroke} +>> matrix makepattern +/Pat5 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -2 8 M 4 -4 L + 0 12 M 8 -4 L 4 12 M 10 0 L stroke} +>> matrix makepattern +/Pat6 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -2 0 M 4 12 L + 0 -4 M 8 12 L 4 -4 M 10 8 L stroke} +>> matrix makepattern +/Pat7 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 8 -2 M -4 4 L + 12 0 M -4 8 L 12 4 M 0 10 L stroke} +>> matrix makepattern +/Pat8 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 -2 M 12 4 L + -4 0 M 12 8 L -4 4 M 8 10 L stroke} +>> matrix makepattern +/Pat9 exch def +/Pattern1 {PatternBgnd KeepColor Pat1 setpattern} bind def +/Pattern2 {PatternBgnd KeepColor Pat2 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+/Density { + /Fillden exch def + currentrgbcolor + /ColB exch def /ColG exch def /ColR exch def + /ColR ColR Fillden mul Fillden sub 1 add def + /ColG ColG Fillden mul Fillden sub 1 add def + /ColB ColB Fillden mul Fillden sub 1 add def + ColR ColG ColB setrgbcolor} def +/BoxColFill {gsave Rec PolyFill} def +/PolyFill {gsave Density fill grestore grestore} def +/h {rlineto rlineto rlineto gsave closepath fill grestore} bind def +% +% PostScript Level 1 Pattern Fill routine for rectangles +% Usage: x y w h s a XX PatternFill +% x,y = lower left corner of box to be filled +% w,h = width and height of box +% a = angle in degrees between lines and x-axis +% XX = 0/1 for no/yes cross-hatch +% +/PatternFill {gsave /PFa [ 9 2 roll ] def + PFa 0 get PFa 2 get 2 div add PFa 1 get PFa 3 get 2 div add translate + PFa 2 get -2 div PFa 3 get -2 div PFa 2 get PFa 3 get Rec + TransparentPatterns {} {gsave 1 setgray fill grestore} ifelse + clip + currentlinewidth 0.5 mul setlinewidth + /PFs PFa 2 get dup mul PFa 3 get dup mul add sqrt def + 0 0 M PFa 5 get rotate PFs -2 div dup translate + 0 1 PFs PFa 4 get div 1 add floor cvi + {PFa 4 get mul 0 M 0 PFs V} for + 0 PFa 6 get ne { + 0 1 PFs PFa 4 get div 1 add floor cvi + {PFa 4 get mul 0 2 1 roll M PFs 0 V} for + } if + stroke grestore} def +% +/languagelevel where + {pop languagelevel} {1} ifelse + 2 lt + {/InterpretLevel1 true def} + {/InterpretLevel1 Level1 def} + ifelse +% +% PostScript level 2 pattern fill definitions +% +/Level2PatternFill { +/Tile8x8 {/PaintType 2 /PatternType 1 /TilingType 1 /BBox [0 0 8 8] /XStep 8 /YStep 8} + bind def +/KeepColor {currentrgbcolor [/Pattern /DeviceRGB] setcolorspace} bind def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 8 8 L 0 8 M 8 0 L stroke} +>> matrix makepattern +/Pat1 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 8 8 L 0 8 M 8 0 L stroke + 0 4 M 4 8 L 8 4 L 4 0 L 0 4 L stroke} +>> matrix makepattern +/Pat2 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 0 8 L + 8 8 L 8 0 L 0 0 L fill} +>> matrix makepattern +/Pat3 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -4 8 M 8 -4 L + 0 12 M 12 0 L stroke} +>> matrix makepattern +/Pat4 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -4 0 M 8 12 L + 0 -4 M 12 8 L stroke} +>> matrix makepattern +/Pat5 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -2 8 M 4 -4 L + 0 12 M 8 -4 L 4 12 M 10 0 L stroke} +>> matrix makepattern +/Pat6 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -2 0 M 4 12 L + 0 -4 M 8 12 L 4 -4 M 10 8 L stroke} +>> matrix makepattern +/Pat7 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 8 -2 M -4 4 L + 12 0 M -4 8 L 12 4 M 0 10 L stroke} +>> matrix makepattern +/Pat8 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 -2 M 12 4 L + -4 0 M 12 8 L -4 4 M 8 10 L stroke} +>> matrix makepattern +/Pat9 exch def +/Pattern1 {PatternBgnd KeepColor Pat1 setpattern} bind def +/Pattern2 {PatternBgnd KeepColor Pat2 setpattern} bind def +/Pattern3 {PatternBgnd KeepColor Pat3 setpattern} bind def +/Pattern4 {PatternBgnd KeepColor Landscape {Pat5} {Pat4} ifelse setpattern} bind def +/Pattern5 {PatternBgnd KeepColor Landscape {Pat4} {Pat5} ifelse setpattern} bind def +/Pattern6 {PatternBgnd KeepColor Landscape {Pat9} {Pat6} ifelse setpattern} bind def +/Pattern7 {PatternBgnd KeepColor Landscape {Pat8} {Pat7} ifelse setpattern} bind def +} def +% +% +%End of PostScript Level 2 code +% +/PatternBgnd { + TransparentPatterns {} {gsave 1 setgray fill grestore} ifelse +} def +% +% Substitute for Level 2 pattern fill codes with +% grayscale if Level 2 support is not selected. +% +/Level1PatternFill { +/Pattern1 {0.250 Density} bind def +/Pattern2 {0.500 Density} bind def +/Pattern3 {0.750 Density} bind def +/Pattern4 {0.125 Density} bind def +/Pattern5 {0.375 Density} bind def +/Pattern6 {0.625 Density} bind def +/Pattern7 {0.875 Density} bind def +} def +% +% Now test for support of Level 2 code +% +Level1 {Level1PatternFill} {Level2PatternFill} ifelse +% +/Symbol-Oblique /Symbol findfont [1 0 .167 1 0 0] makefont +dup length dict begin {1 index /FID eq {pop pop} {def} ifelse} forall +currentdict end definefont pop +% +% Encoding for ISO-8859-1 (also called Latin1) +% +/reencodeISO { +dup dup findfont dup length dict begin +{ 1 index /FID ne { def }{ pop pop } ifelse } forall +currentdict /CharStrings known { + CharStrings /Idieresis known { + /Encoding ISOLatin1Encoding def } if +} if +currentdict end definefont +} def +/ISOLatin1Encoding [ +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/space/exclam/quotedbl/numbersign/dollar/percent/ampersand/quoteright +/parenleft/parenright/asterisk/plus/comma/minus/period/slash +/zero/one/two/three/four/five/six/seven/eight/nine/colon/semicolon +/less/equal/greater/question/at/A/B/C/D/E/F/G/H/I/J/K/L/M/N +/O/P/Q/R/S/T/U/V/W/X/Y/Z/bracketleft/backslash/bracketright +/asciicircum/underscore/quoteleft/a/b/c/d/e/f/g/h/i/j/k/l/m +/n/o/p/q/r/s/t/u/v/w/x/y/z/braceleft/bar/braceright/asciitilde +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/dotlessi/grave/acute/circumflex/tilde/macron/breve +/dotaccent/dieresis/.notdef/ring/cedilla/.notdef/hungarumlaut +/ogonek/caron/space/exclamdown/cent/sterling/currency/yen/brokenbar +/section/dieresis/copyright/ordfeminine/guillemotleft/logicalnot +/hyphen/registered/macron/degree/plusminus/twosuperior/threesuperior +/acute/mu/paragraph/periodcentered/cedilla/onesuperior/ordmasculine +/guillemotright/onequarter/onehalf/threequarters/questiondown +/Agrave/Aacute/Acircumflex/Atilde/Adieresis/Aring/AE/Ccedilla +/Egrave/Eacute/Ecircumflex/Edieresis/Igrave/Iacute/Icircumflex 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} + ifelse } + forall} def +/Gswidth {dup type /stringtype eq {stringwidth} {pop (n) stringwidth} ifelse} def +/MFwidth {0 exch { dup 5 get 3 ge { 5 get 3 eq { 0 } { pop } ifelse } + {dup 3 get{dup dup 0 get findfont exch 1 get scalefont setfont + 6 get Gswidth pop add} {pop} ifelse} ifelse} forall} def +/MLshow { currentpoint stroke M + 0 exch R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/MRshow { currentpoint stroke M + exch dup MFwidth neg 3 -1 roll R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/MCshow { currentpoint stroke M + exch dup MFwidth -2 div 3 -1 roll R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/XYsave { [( ) 1 2 true false 3 ()] } bind def +/XYrestore { [( ) 1 2 true false 4 ()] } bind def +/Helvetica reencodeISO def +Level1 SuppressPDFMark or +{} { +/SDict 10 dict def +systemdict /pdfmark known not { + userdict /pdfmark systemdict /cleartomark get put +} if +SDict begin [ + 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setgray Solid {pop []} if 0 setdash} ifelse} def +/BL {stroke userlinewidth 2 mul setlinewidth + Rounded {1 setlinejoin 1 setlinecap} if} def +/AL {stroke userlinewidth 2 div setlinewidth + Rounded {1 setlinejoin 1 setlinecap} if} def +/UL {dup gnulinewidth mul /userlinewidth exch def + dup 1 lt {pop 1} if 10 mul /udl exch def} def +/PL {stroke userlinewidth setlinewidth + Rounded {1 setlinejoin 1 setlinecap} if} def +3.8 setmiterlimit +% Default Line colors +/LCw {1 1 1} def +/LCb {0 0 0} def +/LCa {0 0 0} def +/LC0 {1 0 0} def +/LC1 {0 1 0} def +/LC2 {0 0 1} def +/LC3 {1 0 1} def +/LC4 {0 1 1} def +/LC5 {1 1 0} def +/LC6 {0 0 0} def +/LC7 {1 0.3 0} def +/LC8 {0.5 0.5 0.5} def +% Default Line Types +/LTw {PL [] 1 setgray} def +/LTb {BL [] LCb DL} def +/LTa {AL [1 udl mul 2 udl mul] 0 setdash LCa setrgbcolor} def +/LT0 {PL [] LC0 DL} def +/LT1 {PL [4 dl1 2 dl2] LC1 DL} def +/LT2 {PL [2 dl1 3 dl2] LC2 DL} def +/LT3 {PL [1 dl1 1.5 dl2] LC3 DL} def +/LT4 {PL [6 dl1 2 dl2 1 dl1 2 dl2] LC4 DL} def +/LT5 {PL [3 dl1 3 dl2 1 dl1 3 dl2] LC5 DL} def +/LT6 {PL [2 dl1 2 dl2 2 dl1 6 dl2] LC6 DL} def +/LT7 {PL [1 dl1 2 dl2 6 dl1 2 dl2 1 dl1 2 dl2] LC7 DL} def +/LT8 {PL [2 dl1 2 dl2 2 dl1 2 dl2 2 dl1 2 dl2 2 dl1 4 dl2] LC8 DL} def +/Pnt {stroke [] 0 setdash gsave 1 setlinecap M 0 0 V stroke grestore} def +/Dia {stroke [] 0 setdash 2 copy vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt neg vpt V closepath stroke + Pnt} def +/Pls {stroke [] 0 setdash vpt sub M 0 vpt2 V + currentpoint stroke M + hpt neg vpt neg R hpt2 0 V stroke + } def +/Box {stroke [] 0 setdash 2 copy exch hpt sub exch vpt add M + 0 vpt2 neg V hpt2 0 V 0 vpt2 V + hpt2 neg 0 V closepath stroke + Pnt} def +/Crs {stroke [] 0 setdash exch hpt sub exch vpt add M + hpt2 vpt2 neg V currentpoint stroke M + hpt2 neg 0 R hpt2 vpt2 V stroke} def +/TriU {stroke [] 0 setdash 2 copy vpt 1.12 mul add M + hpt neg vpt -1.62 mul V + hpt 2 mul 0 V + hpt neg vpt 1.62 mul V closepath stroke + Pnt} def +/Star {2 copy Pls Crs} def +/BoxF {stroke [] 0 setdash exch hpt sub exch vpt add M + 0 vpt2 neg V hpt2 0 V 0 vpt2 V + hpt2 neg 0 V closepath fill} def +/TriUF {stroke [] 0 setdash vpt 1.12 mul add M + hpt neg vpt -1.62 mul V + hpt 2 mul 0 V + hpt neg vpt 1.62 mul V closepath fill} def +/TriD {stroke [] 0 setdash 2 copy vpt 1.12 mul sub M + hpt neg vpt 1.62 mul V + hpt 2 mul 0 V + hpt neg vpt -1.62 mul V closepath stroke + Pnt} def +/TriDF {stroke [] 0 setdash vpt 1.12 mul sub M + hpt neg vpt 1.62 mul V + hpt 2 mul 0 V + hpt neg vpt -1.62 mul V closepath fill} def +/DiaF {stroke [] 0 setdash vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt neg vpt V closepath fill} def +/Pent {stroke [] 0 setdash 2 copy gsave + translate 0 hpt M 4 {72 rotate 0 hpt L} repeat + closepath stroke grestore Pnt} def +/PentF {stroke [] 0 setdash gsave + translate 0 hpt M 4 {72 rotate 0 hpt L} repeat + closepath fill grestore} def +/Circle {stroke [] 0 setdash 2 copy + hpt 0 360 arc stroke Pnt} def +/CircleF {stroke [] 0 setdash hpt 0 360 arc fill} def +/C0 {BL [] 0 setdash 2 copy moveto vpt 90 450 arc} bind def +/C1 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 90 arc closepath fill + vpt 0 360 arc closepath} bind def +/C2 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 90 180 arc closepath fill + vpt 0 360 arc closepath} bind def +/C3 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 180 arc closepath fill + vpt 0 360 arc closepath} bind def +/C4 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 180 270 arc closepath fill + vpt 0 360 arc closepath} bind def +/C5 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 90 arc + 2 copy moveto + 2 copy vpt 180 270 arc closepath fill + vpt 0 360 arc} bind def +/C6 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 90 270 arc closepath fill + vpt 0 360 arc closepath} bind def +/C7 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 270 arc closepath fill + vpt 0 360 arc closepath} bind def +/C8 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 270 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C9 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 270 450 arc closepath fill + vpt 0 360 arc closepath} bind def +/C10 {BL [] 0 setdash 2 copy 2 copy moveto vpt 270 360 arc closepath fill + 2 copy moveto + 2 copy vpt 90 180 arc closepath fill + vpt 0 360 arc closepath} bind def +/C11 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 180 arc closepath fill + 2 copy moveto + 2 copy vpt 270 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C12 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 180 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C13 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 90 arc closepath fill + 2 copy moveto + 2 copy vpt 180 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C14 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 90 360 arc closepath fill + vpt 0 360 arc} bind def +/C15 {BL [] 0 setdash 2 copy vpt 0 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/Rec {newpath 4 2 roll moveto 1 index 0 rlineto 0 exch rlineto + neg 0 rlineto closepath} bind def +/Square {dup Rec} bind def +/Bsquare {vpt sub exch vpt sub exch vpt2 Square} bind def +/S0 {BL [] 0 setdash 2 copy moveto 0 vpt rlineto BL Bsquare} bind def +/S1 {BL [] 0 setdash 2 copy vpt Square fill Bsquare} bind def +/S2 {BL [] 0 setdash 2 copy exch vpt sub exch vpt Square fill Bsquare} bind def +/S3 {BL [] 0 setdash 2 copy exch vpt sub exch vpt2 vpt Rec fill Bsquare} bind def +/S4 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt Square fill Bsquare} bind def +/S5 {BL [] 0 setdash 2 copy 2 copy vpt Square fill + exch vpt sub exch vpt sub vpt Square fill Bsquare} bind def +/S6 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt vpt2 Rec fill Bsquare} bind def +/S7 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt vpt2 Rec fill + 2 copy vpt Square fill Bsquare} bind def +/S8 {BL [] 0 setdash 2 copy vpt sub vpt Square fill Bsquare} bind def +/S9 {BL [] 0 setdash 2 copy vpt sub vpt vpt2 Rec fill Bsquare} bind def +/S10 {BL [] 0 setdash 2 copy vpt sub vpt Square fill 2 copy exch vpt sub exch vpt Square fill + Bsquare} bind def +/S11 {BL [] 0 setdash 2 copy vpt sub vpt Square fill 2 copy exch vpt sub exch vpt2 vpt Rec fill + Bsquare} bind def +/S12 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill Bsquare} bind def +/S13 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill + 2 copy vpt Square fill Bsquare} bind def +/S14 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill + 2 copy exch vpt sub exch vpt Square fill Bsquare} bind def +/S15 {BL [] 0 setdash 2 copy Bsquare fill Bsquare} bind def +/D0 {gsave translate 45 rotate 0 0 S0 stroke grestore} bind def +/D1 {gsave translate 45 rotate 0 0 S1 stroke grestore} bind def +/D2 {gsave translate 45 rotate 0 0 S2 stroke grestore} bind def +/D3 {gsave translate 45 rotate 0 0 S3 stroke grestore} bind def +/D4 {gsave translate 45 rotate 0 0 S4 stroke grestore} bind def +/D5 {gsave translate 45 rotate 0 0 S5 stroke grestore} bind def +/D6 {gsave translate 45 rotate 0 0 S6 stroke grestore} bind def +/D7 {gsave translate 45 rotate 0 0 S7 stroke grestore} bind def +/D8 {gsave translate 45 rotate 0 0 S8 stroke grestore} bind def +/D9 {gsave translate 45 rotate 0 0 S9 stroke grestore} bind def +/D10 {gsave translate 45 rotate 0 0 S10 stroke grestore} bind def +/D11 {gsave translate 45 rotate 0 0 S11 stroke grestore} bind def +/D12 {gsave translate 45 rotate 0 0 S12 stroke grestore} bind def +/D13 {gsave translate 45 rotate 0 0 S13 stroke grestore} bind def +/D14 {gsave translate 45 rotate 0 0 S14 stroke grestore} bind def +/D15 {gsave translate 45 rotate 0 0 S15 stroke grestore} bind def +/DiaE {stroke [] 0 setdash vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt neg vpt V closepath stroke} def +/BoxE {stroke [] 0 setdash exch hpt sub exch vpt add M + 0 vpt2 neg V hpt2 0 V 0 vpt2 V + hpt2 neg 0 V closepath stroke} def +/TriUE {stroke [] 0 setdash vpt 1.12 mul add M + hpt neg vpt -1.62 mul V + hpt 2 mul 0 V + hpt neg vpt 1.62 mul V closepath stroke} def +/TriDE {stroke [] 0 setdash vpt 1.12 mul sub M + hpt neg vpt 1.62 mul V + hpt 2 mul 0 V + hpt neg vpt -1.62 mul V closepath stroke} def +/PentE {stroke [] 0 setdash gsave + translate 0 hpt M 4 {72 rotate 0 hpt L} repeat + closepath stroke grestore} def +/CircE {stroke [] 0 setdash + hpt 0 360 arc stroke} def +/Opaque {gsave closepath 1 setgray fill grestore 0 setgray closepath} def +/DiaW {stroke [] 0 setdash vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt neg vpt V Opaque stroke} def +/BoxW {stroke [] 0 setdash exch hpt sub exch vpt add M + 0 vpt2 neg V hpt2 0 V 0 vpt2 V + hpt2 neg 0 V Opaque stroke} def +/TriUW {stroke [] 0 setdash vpt 1.12 mul add M + hpt neg vpt -1.62 mul V + hpt 2 mul 0 V + hpt neg vpt 1.62 mul V Opaque stroke} def +/TriDW {stroke [] 0 setdash vpt 1.12 mul sub M + hpt neg vpt 1.62 mul V + hpt 2 mul 0 V + hpt neg vpt -1.62 mul V Opaque stroke} def +/PentW {stroke [] 0 setdash gsave + translate 0 hpt M 4 {72 rotate 0 hpt L} repeat + Opaque stroke grestore} def +/CircW {stroke [] 0 setdash + hpt 0 360 arc Opaque stroke} def +/BoxFill {gsave Rec 1 setgray fill grestore} def +/Density { + /Fillden exch def + currentrgbcolor + /ColB exch def /ColG exch def /ColR exch def + /ColR ColR Fillden mul Fillden sub 1 add def + /ColG ColG Fillden mul Fillden sub 1 add def + /ColB ColB Fillden mul Fillden sub 1 add def + ColR ColG ColB setrgbcolor} def +/BoxColFill {gsave Rec PolyFill} def +/PolyFill {gsave Density fill grestore grestore} def +/h {rlineto rlineto rlineto gsave closepath fill grestore} bind def +% +% PostScript Level 1 Pattern Fill routine for rectangles +% Usage: x y w h s a XX PatternFill +% x,y = lower left corner of box to be filled +% w,h = width and height of box +% a = angle in degrees between lines and x-axis +% XX = 0/1 for no/yes cross-hatch +% +/PatternFill {gsave /PFa [ 9 2 roll ] def + PFa 0 get PFa 2 get 2 div add PFa 1 get PFa 3 get 2 div add translate + PFa 2 get -2 div PFa 3 get -2 div PFa 2 get PFa 3 get Rec + TransparentPatterns {} {gsave 1 setgray fill grestore} ifelse + clip + currentlinewidth 0.5 mul setlinewidth + /PFs PFa 2 get dup mul PFa 3 get dup mul add sqrt def + 0 0 M PFa 5 get rotate PFs -2 div dup translate + 0 1 PFs PFa 4 get div 1 add floor cvi + {PFa 4 get mul 0 M 0 PFs V} for + 0 PFa 6 get ne { + 0 1 PFs PFa 4 get div 1 add floor cvi + {PFa 4 get mul 0 2 1 roll M PFs 0 V} for + } if + stroke grestore} def +% +/languagelevel where + {pop languagelevel} {1} ifelse + 2 lt + {/InterpretLevel1 true def} + {/InterpretLevel1 Level1 def} + ifelse +% +% PostScript level 2 pattern fill definitions +% +/Level2PatternFill { +/Tile8x8 {/PaintType 2 /PatternType 1 /TilingType 1 /BBox [0 0 8 8] /XStep 8 /YStep 8} + bind def +/KeepColor {currentrgbcolor [/Pattern /DeviceRGB] setcolorspace} bind def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 8 8 L 0 8 M 8 0 L stroke} +>> matrix makepattern +/Pat1 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 8 8 L 0 8 M 8 0 L stroke + 0 4 M 4 8 L 8 4 L 4 0 L 0 4 L stroke} +>> matrix makepattern +/Pat2 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 0 8 L + 8 8 L 8 0 L 0 0 L fill} +>> matrix makepattern +/Pat3 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -4 8 M 8 -4 L + 0 12 M 12 0 L stroke} +>> matrix makepattern +/Pat4 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -4 0 M 8 12 L + 0 -4 M 12 8 L stroke} +>> matrix makepattern +/Pat5 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -2 8 M 4 -4 L + 0 12 M 8 -4 L 4 12 M 10 0 L stroke} +>> matrix makepattern +/Pat6 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -2 0 M 4 12 L + 0 -4 M 8 12 L 4 -4 M 10 8 L stroke} +>> matrix makepattern +/Pat7 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 8 -2 M -4 4 L + 12 0 M -4 8 L 12 4 M 0 10 L stroke} +>> matrix makepattern +/Pat8 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 -2 M 12 4 L + -4 0 M 12 8 L -4 4 M 8 10 L stroke} +>> matrix makepattern +/Pat9 exch def +/Pattern1 {PatternBgnd KeepColor Pat1 setpattern} bind def +/Pattern2 {PatternBgnd KeepColor Pat2 setpattern} bind def +/Pattern3 {PatternBgnd KeepColor Pat3 setpattern} bind def +/Pattern4 {PatternBgnd KeepColor Landscape {Pat5} {Pat4} ifelse setpattern} bind def +/Pattern5 {PatternBgnd KeepColor Landscape {Pat4} {Pat5} ifelse setpattern} bind def +/Pattern6 {PatternBgnd KeepColor Landscape {Pat9} {Pat6} ifelse setpattern} bind def +/Pattern7 {PatternBgnd KeepColor Landscape {Pat8} {Pat7} ifelse setpattern} bind def +} def +% +% +%End of PostScript Level 2 code +% +/PatternBgnd { + TransparentPatterns {} {gsave 1 setgray fill grestore} ifelse +} def +% +% Substitute for Level 2 pattern fill codes with +% grayscale if Level 2 support is not selected. +% +/Level1PatternFill { +/Pattern1 {0.250 Density} bind def +/Pattern2 {0.500 Density} bind def +/Pattern3 {0.750 Density} bind def +/Pattern4 {0.125 Density} bind def +/Pattern5 {0.375 Density} bind def +/Pattern6 {0.625 Density} bind def +/Pattern7 {0.875 Density} bind def +} def +% +% Now test for support of Level 2 code +% +Level1 {Level1PatternFill} {Level2PatternFill} ifelse +% +/Symbol-Oblique /Symbol findfont [1 0 .167 1 0 0] makefont +dup length dict begin {1 index /FID eq {pop pop} {def} ifelse} forall +currentdict end definefont pop +% +% Encoding for ISO-8859-1 (also called Latin1) +% +/reencodeISO { +dup dup findfont dup length dict begin +{ 1 index /FID ne { def }{ pop pop } ifelse } forall +currentdict /CharStrings known { + CharStrings /Idieresis known { + /Encoding ISOLatin1Encoding def } if +} if +currentdict end definefont +} def +/ISOLatin1Encoding [ +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/space/exclam/quotedbl/numbersign/dollar/percent/ampersand/quoteright +/parenleft/parenright/asterisk/plus/comma/minus/period/slash +/zero/one/two/three/four/five/six/seven/eight/nine/colon/semicolon +/less/equal/greater/question/at/A/B/C/D/E/F/G/H/I/J/K/L/M/N +/O/P/Q/R/S/T/U/V/W/X/Y/Z/bracketleft/backslash/bracketright +/asciicircum/underscore/quoteleft/a/b/c/d/e/f/g/h/i/j/k/l/m +/n/o/p/q/r/s/t/u/v/w/x/y/z/braceleft/bar/braceright/asciitilde +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/dotlessi/grave/acute/circumflex/tilde/macron/breve +/dotaccent/dieresis/.notdef/ring/cedilla/.notdef/hungarumlaut +/ogonek/caron/space/exclamdown/cent/sterling/currency/yen/brokenbar +/section/dieresis/copyright/ordfeminine/guillemotleft/logicalnot +/hyphen/registered/macron/degree/plusminus/twosuperior/threesuperior +/acute/mu/paragraph/periodcentered/cedilla/onesuperior/ordmasculine 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stringwidth pop -2 div + dup 0 R} {dup 6 get stringwidth pop -2 div 0 R 6 get + show 2 index {aload pop M neg 3 -1 roll neg R pop pop} {pop pop pop + pop aload pop M} ifelse }ifelse }ifelse } + ifelse } + forall} def +/Gswidth {dup type /stringtype eq {stringwidth} {pop (n) stringwidth} ifelse} def +/MFwidth {0 exch { dup 5 get 3 ge { 5 get 3 eq { 0 } { pop } ifelse } + {dup 3 get{dup dup 0 get findfont exch 1 get scalefont setfont + 6 get Gswidth pop add} {pop} ifelse} ifelse} forall} def +/MLshow { currentpoint stroke M + 0 exch R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/MRshow { currentpoint stroke M + exch dup MFwidth neg 3 -1 roll R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/MCshow { currentpoint stroke M + exch dup MFwidth -2 div 3 -1 roll R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/XYsave { [( ) 1 2 true false 3 ()] } bind def +/XYrestore { [( ) 1 2 true false 4 ()] } bind def 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translate 45 rotate 0 0 S2 stroke grestore} bind def +/D3 {gsave translate 45 rotate 0 0 S3 stroke grestore} bind def +/D4 {gsave translate 45 rotate 0 0 S4 stroke grestore} bind def +/D5 {gsave translate 45 rotate 0 0 S5 stroke grestore} bind def +/D6 {gsave translate 45 rotate 0 0 S6 stroke grestore} bind def +/D7 {gsave translate 45 rotate 0 0 S7 stroke grestore} bind def +/D8 {gsave translate 45 rotate 0 0 S8 stroke grestore} bind def +/D9 {gsave translate 45 rotate 0 0 S9 stroke grestore} bind def +/D10 {gsave translate 45 rotate 0 0 S10 stroke grestore} bind def +/D11 {gsave translate 45 rotate 0 0 S11 stroke grestore} bind def +/D12 {gsave translate 45 rotate 0 0 S12 stroke grestore} bind def +/D13 {gsave translate 45 rotate 0 0 S13 stroke grestore} bind def +/D14 {gsave translate 45 rotate 0 0 S14 stroke grestore} bind def +/D15 {gsave translate 45 rotate 0 0 S15 stroke grestore} bind def +/DiaE {stroke [] 0 setdash vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt 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redefined later in the file to support UTF-8 +/vpt2 vpt 2 mul def +/hpt2 hpt 2 mul def +/Lshow {currentpoint stroke M 0 vshift R + Blacktext {gsave 0 setgray show grestore} {show} ifelse} def +/Rshow {currentpoint stroke M dup stringwidth pop neg vshift R + Blacktext {gsave 0 setgray show grestore} {show} ifelse} def +/Cshow {currentpoint stroke M dup stringwidth pop -2 div vshift R + Blacktext {gsave 0 setgray show grestore} {show} ifelse} def +/UP {dup vpt_ mul /vpt exch def hpt_ mul /hpt exch def + /hpt2 hpt 2 mul def /vpt2 vpt 2 mul def} def +/DL {Color {setrgbcolor Solid {pop []} if 0 setdash} + {pop pop pop 0 setgray Solid {pop []} if 0 setdash} ifelse} def +/BL {stroke userlinewidth 2 mul setlinewidth + Rounded {1 setlinejoin 1 setlinecap} if} def +/AL {stroke userlinewidth 2 div setlinewidth + Rounded {1 setlinejoin 1 setlinecap} if} def +/UL {dup gnulinewidth mul /userlinewidth exch def + dup 1 lt {pop 1} if 10 mul /udl exch def} def +/PL {stroke userlinewidth setlinewidth + 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copy vpt Square fill Bsquare} bind def +/S14 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill + 2 copy exch vpt sub exch vpt Square fill Bsquare} bind def +/S15 {BL [] 0 setdash 2 copy Bsquare fill Bsquare} bind def +/D0 {gsave translate 45 rotate 0 0 S0 stroke grestore} bind def +/D1 {gsave translate 45 rotate 0 0 S1 stroke grestore} bind def +/D2 {gsave translate 45 rotate 0 0 S2 stroke grestore} bind def +/D3 {gsave translate 45 rotate 0 0 S3 stroke grestore} bind def +/D4 {gsave translate 45 rotate 0 0 S4 stroke grestore} bind def +/D5 {gsave translate 45 rotate 0 0 S5 stroke grestore} bind def +/D6 {gsave translate 45 rotate 0 0 S6 stroke grestore} bind def +/D7 {gsave translate 45 rotate 0 0 S7 stroke grestore} bind def +/D8 {gsave translate 45 rotate 0 0 S8 stroke grestore} bind def +/D9 {gsave translate 45 rotate 0 0 S9 stroke grestore} bind def +/D10 {gsave translate 45 rotate 0 0 S10 stroke grestore} bind def +/D11 {gsave translate 45 rotate 0 0 S11 stroke grestore} bind def +/D12 {gsave translate 45 rotate 0 0 S12 stroke grestore} bind def +/D13 {gsave translate 45 rotate 0 0 S13 stroke grestore} bind def +/D14 {gsave translate 45 rotate 0 0 S14 stroke grestore} bind def +/D15 {gsave translate 45 rotate 0 0 S15 stroke grestore} bind def +/DiaE {stroke [] 0 setdash vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt neg vpt V closepath stroke} def +/BoxE {stroke [] 0 setdash exch hpt sub exch vpt add M + 0 vpt2 neg V hpt2 0 V 0 vpt2 V + hpt2 neg 0 V closepath stroke} def +/TriUE {stroke [] 0 setdash vpt 1.12 mul add M + hpt neg vpt -1.62 mul V + hpt 2 mul 0 V + hpt neg vpt 1.62 mul V closepath stroke} def +/TriDE {stroke [] 0 setdash vpt 1.12 mul sub M + hpt neg vpt 1.62 mul V + hpt 2 mul 0 V + hpt neg vpt -1.62 mul V closepath stroke} def +/PentE {stroke [] 0 setdash gsave + translate 0 hpt M 4 {72 rotate 0 hpt L} repeat + closepath stroke grestore} def +/CircE {stroke [] 0 setdash + hpt 0 360 arc stroke} def +/Opaque {gsave closepath 1 setgray fill grestore 0 setgray closepath} def +/DiaW {stroke [] 0 setdash vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt neg vpt V Opaque stroke} def +/BoxW {stroke [] 0 setdash exch hpt sub exch vpt add M + 0 vpt2 neg V hpt2 0 V 0 vpt2 V + hpt2 neg 0 V Opaque stroke} def +/TriUW {stroke [] 0 setdash vpt 1.12 mul add M + hpt neg vpt -1.62 mul V + hpt 2 mul 0 V + hpt neg vpt 1.62 mul V Opaque stroke} def +/TriDW {stroke [] 0 setdash vpt 1.12 mul sub M + hpt neg vpt 1.62 mul V + hpt 2 mul 0 V + hpt neg vpt -1.62 mul V Opaque stroke} def +/PentW {stroke [] 0 setdash gsave + translate 0 hpt M 4 {72 rotate 0 hpt L} repeat + Opaque stroke grestore} def +/CircW {stroke [] 0 setdash + hpt 0 360 arc Opaque stroke} def +/BoxFill {gsave Rec 1 setgray fill grestore} def +/Density { + /Fillden exch def + currentrgbcolor + /ColB exch def /ColG exch def /ColR exch def + /ColR ColR Fillden mul Fillden sub 1 add def + /ColG ColG Fillden mul Fillden sub 1 add def + /ColB ColB Fillden mul Fillden sub 1 add def + ColR ColG ColB setrgbcolor} def +/BoxColFill {gsave Rec PolyFill} def +/PolyFill {gsave Density fill grestore grestore} def +/h {rlineto rlineto rlineto gsave closepath fill grestore} bind def +% +% PostScript Level 1 Pattern Fill routine for rectangles +% Usage: x y w h s a XX PatternFill +% x,y = lower left corner of box to be filled +% w,h = width and height of box +% a = angle in degrees between lines and x-axis +% XX = 0/1 for no/yes cross-hatch +% +/PatternFill {gsave /PFa [ 9 2 roll ] def + PFa 0 get PFa 2 get 2 div add PFa 1 get PFa 3 get 2 div add translate + PFa 2 get -2 div PFa 3 get -2 div PFa 2 get PFa 3 get Rec + TransparentPatterns {} {gsave 1 setgray fill grestore} ifelse + clip + currentlinewidth 0.5 mul setlinewidth + /PFs PFa 2 get dup mul PFa 3 get dup mul add sqrt def + 0 0 M PFa 5 get rotate PFs -2 div dup translate + 0 1 PFs PFa 4 get div 1 add floor cvi + {PFa 4 get mul 0 M 0 PFs V} for + 0 PFa 6 get ne { + 0 1 PFs PFa 4 get div 1 add floor cvi + {PFa 4 get mul 0 2 1 roll M PFs 0 V} for + } if + stroke grestore} def +% +/languagelevel where + {pop languagelevel} {1} ifelse + 2 lt + {/InterpretLevel1 true def} + {/InterpretLevel1 Level1 def} + ifelse +% +% PostScript level 2 pattern fill definitions +% +/Level2PatternFill { +/Tile8x8 {/PaintType 2 /PatternType 1 /TilingType 1 /BBox [0 0 8 8] /XStep 8 /YStep 8} + bind def +/KeepColor {currentrgbcolor [/Pattern /DeviceRGB] setcolorspace} bind def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 8 8 L 0 8 M 8 0 L stroke} +>> matrix makepattern +/Pat1 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 8 8 L 0 8 M 8 0 L stroke + 0 4 M 4 8 L 8 4 L 4 0 L 0 4 L stroke} +>> matrix makepattern +/Pat2 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 0 8 L + 8 8 L 8 0 L 0 0 L fill} +>> matrix makepattern +/Pat3 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -4 8 M 8 -4 L + 0 12 M 12 0 L stroke} +>> matrix makepattern +/Pat4 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -4 0 M 8 12 L + 0 -4 M 12 8 L stroke} +>> matrix makepattern +/Pat5 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -2 8 M 4 -4 L + 0 12 M 8 -4 L 4 12 M 10 0 L stroke} +>> matrix makepattern +/Pat6 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -2 0 M 4 12 L + 0 -4 M 8 12 L 4 -4 M 10 8 L stroke} +>> matrix makepattern +/Pat7 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 8 -2 M -4 4 L + 12 0 M -4 8 L 12 4 M 0 10 L stroke} +>> matrix makepattern +/Pat8 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 -2 M 12 4 L + -4 0 M 12 8 L -4 4 M 8 10 L stroke} +>> matrix makepattern +/Pat9 exch def +/Pattern1 {PatternBgnd KeepColor Pat1 setpattern} bind def +/Pattern2 {PatternBgnd KeepColor Pat2 setpattern} bind def +/Pattern3 {PatternBgnd KeepColor Pat3 setpattern} bind def +/Pattern4 {PatternBgnd KeepColor Landscape {Pat5} {Pat4} ifelse setpattern} bind def +/Pattern5 {PatternBgnd KeepColor Landscape {Pat4} {Pat5} ifelse setpattern} bind def +/Pattern6 {PatternBgnd KeepColor Landscape {Pat9} {Pat6} ifelse setpattern} bind def +/Pattern7 {PatternBgnd KeepColor Landscape {Pat8} {Pat7} ifelse setpattern} bind def +} def +% +% +%End of PostScript Level 2 code +% +/PatternBgnd { + TransparentPatterns {} {gsave 1 setgray fill grestore} ifelse +} def +% +% Substitute for Level 2 pattern fill codes with +% grayscale if Level 2 support is not selected. +% +/Level1PatternFill { +/Pattern1 {0.250 Density} bind def +/Pattern2 {0.500 Density} bind def +/Pattern3 {0.750 Density} bind def +/Pattern4 {0.125 Density} bind def +/Pattern5 {0.375 Density} bind def +/Pattern6 {0.625 Density} bind def +/Pattern7 {0.875 Density} bind def +} def +% +% Now test for support of Level 2 code +% +Level1 {Level1PatternFill} {Level2PatternFill} ifelse +% +/Symbol-Oblique /Symbol findfont [1 0 .167 1 0 0] makefont +dup length dict begin {1 index /FID eq {pop pop} {def} ifelse} forall +currentdict end definefont pop +% +% Encoding for ISO-8859-1 (also called Latin1) +% +/reencodeISO { +dup dup findfont dup length dict begin +{ 1 index /FID ne { def }{ pop pop } ifelse } forall +currentdict /CharStrings known { + CharStrings /Idieresis known { + /Encoding ISOLatin1Encoding def } if +} if +currentdict end definefont +} def +/ISOLatin1Encoding [ +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/space/exclam/quotedbl/numbersign/dollar/percent/ampersand/quoteright +/parenleft/parenright/asterisk/plus/comma/minus/period/slash +/zero/one/two/three/four/five/six/seven/eight/nine/colon/semicolon +/less/equal/greater/question/at/A/B/C/D/E/F/G/H/I/J/K/L/M/N +/O/P/Q/R/S/T/U/V/W/X/Y/Z/bracketleft/backslash/bracketright +/asciicircum/underscore/quoteleft/a/b/c/d/e/f/g/h/i/j/k/l/m +/n/o/p/q/r/s/t/u/v/w/x/y/z/braceleft/bar/braceright/asciitilde +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/dotlessi/grave/acute/circumflex/tilde/macron/breve +/dotaccent/dieresis/.notdef/ring/cedilla/.notdef/hungarumlaut +/ogonek/caron/space/exclamdown/cent/sterling/currency/yen/brokenbar +/section/dieresis/copyright/ordfeminine/guillemotleft/logicalnot +/hyphen/registered/macron/degree/plusminus/twosuperior/threesuperior +/acute/mu/paragraph/periodcentered/cedilla/onesuperior/ordmasculine +/guillemotright/onequarter/onehalf/threequarters/questiondown +/Agrave/Aacute/Acircumflex/Atilde/Adieresis/Aring/AE/Ccedilla +/Egrave/Eacute/Ecircumflex/Edieresis/Igrave/Iacute/Icircumflex +/Idieresis/Eth/Ntilde/Ograve/Oacute/Ocircumflex/Otilde/Odieresis +/multiply/Oslash/Ugrave/Uacute/Ucircumflex/Udieresis/Yacute +/Thorn/germandbls/agrave/aacute/acircumflex/atilde/adieresis 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get{dup dup 0 get findfont exch 1 get scalefont setfont + 6 get Gswidth pop add} {pop} ifelse} ifelse} forall} def +/MLshow { currentpoint stroke M + 0 exch R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/MRshow { currentpoint stroke M + exch dup MFwidth neg 3 -1 roll R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/MCshow { currentpoint stroke M + exch dup MFwidth -2 div 3 -1 roll R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/XYsave { [( ) 1 2 true false 3 ()] } bind def +/XYrestore { [( ) 1 2 true false 4 ()] } bind def +/Helvetica reencodeISO def +Level1 SuppressPDFMark or +{} { +/SDict 10 dict def +systemdict /pdfmark known not { + userdict /pdfmark systemdict /cleartomark get put +} if +SDict begin [ + /Title () + /Subject (gnuplot plot) + /Creator (gnuplot 4.6 patchlevel 6) + /Author (afanfakh) +% /Producer (gnuplot) +% /Keywords () + /CreationDate (Thu Oct 22 12:39:50 2015) + /DOCINFO pdfmark 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360 arc closepath} bind def +/C7 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 270 arc closepath fill + vpt 0 360 arc closepath} bind def +/C8 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 270 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C9 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 270 450 arc closepath fill + vpt 0 360 arc closepath} bind def +/C10 {BL [] 0 setdash 2 copy 2 copy moveto vpt 270 360 arc closepath fill + 2 copy moveto + 2 copy vpt 90 180 arc closepath fill + vpt 0 360 arc closepath} bind def +/C11 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 180 arc closepath fill + 2 copy moveto + 2 copy vpt 270 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C12 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 180 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C13 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 0 90 arc closepath fill + 2 copy moveto + 2 copy vpt 180 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/C14 {BL [] 0 setdash 2 copy moveto + 2 copy vpt 90 360 arc closepath fill + vpt 0 360 arc} bind def +/C15 {BL [] 0 setdash 2 copy vpt 0 360 arc closepath fill + vpt 0 360 arc closepath} bind def +/Rec {newpath 4 2 roll moveto 1 index 0 rlineto 0 exch rlineto + neg 0 rlineto closepath} bind def +/Square {dup Rec} bind def +/Bsquare {vpt sub exch vpt sub exch vpt2 Square} bind def +/S0 {BL [] 0 setdash 2 copy moveto 0 vpt rlineto BL Bsquare} bind def +/S1 {BL [] 0 setdash 2 copy vpt Square fill Bsquare} bind def +/S2 {BL [] 0 setdash 2 copy exch vpt sub exch vpt Square fill Bsquare} bind def +/S3 {BL [] 0 setdash 2 copy exch vpt sub exch vpt2 vpt Rec fill Bsquare} bind def +/S4 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt Square fill Bsquare} bind def +/S5 {BL [] 0 setdash 2 copy 2 copy vpt Square fill + exch vpt sub exch vpt sub vpt Square fill Bsquare} bind def +/S6 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt vpt2 Rec fill Bsquare} bind def +/S7 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt vpt2 Rec fill + 2 copy vpt Square fill Bsquare} bind def +/S8 {BL [] 0 setdash 2 copy vpt sub vpt Square fill Bsquare} bind def +/S9 {BL [] 0 setdash 2 copy vpt sub vpt vpt2 Rec fill Bsquare} bind def +/S10 {BL [] 0 setdash 2 copy vpt sub vpt Square fill 2 copy exch vpt sub exch vpt Square fill + Bsquare} bind def +/S11 {BL [] 0 setdash 2 copy vpt sub vpt Square fill 2 copy exch vpt sub exch vpt2 vpt Rec fill + Bsquare} bind def +/S12 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill Bsquare} bind def +/S13 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill + 2 copy vpt Square fill Bsquare} bind def +/S14 {BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill + 2 copy exch vpt sub exch vpt Square fill Bsquare} bind def +/S15 {BL [] 0 setdash 2 copy Bsquare fill Bsquare} bind def +/D0 {gsave translate 45 rotate 0 0 S0 stroke grestore} bind def +/D1 {gsave translate 45 rotate 0 0 S1 stroke grestore} bind def +/D2 {gsave translate 45 rotate 0 0 S2 stroke grestore} bind def +/D3 {gsave translate 45 rotate 0 0 S3 stroke grestore} bind def +/D4 {gsave translate 45 rotate 0 0 S4 stroke grestore} bind def +/D5 {gsave translate 45 rotate 0 0 S5 stroke grestore} bind def +/D6 {gsave translate 45 rotate 0 0 S6 stroke grestore} bind def +/D7 {gsave translate 45 rotate 0 0 S7 stroke grestore} bind def +/D8 {gsave translate 45 rotate 0 0 S8 stroke grestore} bind def +/D9 {gsave translate 45 rotate 0 0 S9 stroke grestore} bind def +/D10 {gsave translate 45 rotate 0 0 S10 stroke grestore} bind def +/D11 {gsave translate 45 rotate 0 0 S11 stroke grestore} bind def +/D12 {gsave translate 45 rotate 0 0 S12 stroke grestore} bind def +/D13 {gsave translate 45 rotate 0 0 S13 stroke grestore} bind def +/D14 {gsave translate 45 rotate 0 0 S14 stroke grestore} bind def +/D15 {gsave translate 45 rotate 0 0 S15 stroke grestore} bind def +/DiaE {stroke [] 0 setdash vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt neg vpt V closepath stroke} def +/BoxE {stroke [] 0 setdash exch hpt sub exch vpt add M + 0 vpt2 neg V hpt2 0 V 0 vpt2 V + hpt2 neg 0 V closepath stroke} def +/TriUE {stroke [] 0 setdash vpt 1.12 mul add M + hpt neg vpt -1.62 mul V + hpt 2 mul 0 V + hpt neg vpt 1.62 mul V closepath stroke} def +/TriDE {stroke [] 0 setdash vpt 1.12 mul sub M + hpt neg vpt 1.62 mul V + hpt 2 mul 0 V + hpt neg vpt -1.62 mul V closepath stroke} def +/PentE {stroke [] 0 setdash gsave + translate 0 hpt M 4 {72 rotate 0 hpt L} repeat + closepath stroke grestore} def +/CircE {stroke [] 0 setdash + hpt 0 360 arc stroke} def +/Opaque {gsave closepath 1 setgray fill grestore 0 setgray closepath} def +/DiaW {stroke [] 0 setdash vpt add M + hpt neg vpt neg V hpt vpt neg V + hpt vpt V hpt neg vpt V Opaque stroke} def +/BoxW {stroke [] 0 setdash exch hpt sub exch vpt add M + 0 vpt2 neg V hpt2 0 V 0 vpt2 V + hpt2 neg 0 V Opaque stroke} def +/TriUW {stroke [] 0 setdash vpt 1.12 mul add M + hpt neg vpt -1.62 mul V + hpt 2 mul 0 V + hpt neg vpt 1.62 mul V Opaque stroke} def +/TriDW {stroke [] 0 setdash vpt 1.12 mul sub M + hpt neg vpt 1.62 mul V + hpt 2 mul 0 V + hpt neg vpt -1.62 mul V Opaque stroke} def +/PentW {stroke [] 0 setdash gsave + translate 0 hpt M 4 {72 rotate 0 hpt L} repeat + Opaque stroke grestore} def +/CircW {stroke [] 0 setdash + hpt 0 360 arc Opaque stroke} def +/BoxFill {gsave Rec 1 setgray fill grestore} def +/Density { + /Fillden exch def + currentrgbcolor + /ColB exch def /ColG exch def /ColR exch def + /ColR ColR Fillden mul Fillden sub 1 add def + /ColG ColG Fillden mul Fillden sub 1 add def + /ColB ColB Fillden mul Fillden sub 1 add def + ColR ColG ColB setrgbcolor} def +/BoxColFill {gsave Rec PolyFill} def +/PolyFill {gsave Density fill grestore grestore} def +/h {rlineto rlineto rlineto gsave closepath fill grestore} bind def +% +% PostScript Level 1 Pattern Fill routine for rectangles +% Usage: x y w h s a XX PatternFill +% x,y = lower left corner of box to be filled +% w,h = width and height of box +% a = angle in degrees between lines and x-axis +% XX = 0/1 for no/yes cross-hatch +% +/PatternFill {gsave /PFa [ 9 2 roll ] def + PFa 0 get PFa 2 get 2 div add PFa 1 get PFa 3 get 2 div add translate + PFa 2 get -2 div PFa 3 get -2 div PFa 2 get PFa 3 get Rec + TransparentPatterns {} {gsave 1 setgray fill grestore} ifelse + clip + currentlinewidth 0.5 mul setlinewidth + /PFs PFa 2 get dup mul PFa 3 get dup mul add sqrt def + 0 0 M PFa 5 get rotate PFs -2 div dup translate + 0 1 PFs PFa 4 get div 1 add floor cvi + {PFa 4 get mul 0 M 0 PFs V} for + 0 PFa 6 get ne { + 0 1 PFs PFa 4 get div 1 add floor cvi + {PFa 4 get mul 0 2 1 roll M PFs 0 V} for + } if + stroke grestore} def +% +/languagelevel where + {pop languagelevel} {1} ifelse + 2 lt + {/InterpretLevel1 true def} + {/InterpretLevel1 Level1 def} + ifelse +% +% PostScript level 2 pattern fill definitions +% +/Level2PatternFill { +/Tile8x8 {/PaintType 2 /PatternType 1 /TilingType 1 /BBox [0 0 8 8] /XStep 8 /YStep 8} + bind def +/KeepColor {currentrgbcolor [/Pattern /DeviceRGB] setcolorspace} bind def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 8 8 L 0 8 M 8 0 L stroke} +>> matrix makepattern +/Pat1 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 8 8 L 0 8 M 8 0 L stroke + 0 4 M 4 8 L 8 4 L 4 0 L 0 4 L stroke} +>> matrix makepattern +/Pat2 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 0 M 0 8 L + 8 8 L 8 0 L 0 0 L fill} +>> matrix makepattern +/Pat3 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -4 8 M 8 -4 L + 0 12 M 12 0 L stroke} +>> matrix makepattern +/Pat4 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -4 0 M 8 12 L + 0 -4 M 12 8 L stroke} +>> matrix makepattern +/Pat5 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -2 8 M 4 -4 L + 0 12 M 8 -4 L 4 12 M 10 0 L stroke} +>> matrix makepattern +/Pat6 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop -2 0 M 4 12 L + 0 -4 M 8 12 L 4 -4 M 10 8 L stroke} +>> matrix makepattern +/Pat7 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 8 -2 M -4 4 L + 12 0 M -4 8 L 12 4 M 0 10 L stroke} +>> matrix makepattern +/Pat8 exch def +<< Tile8x8 + /PaintProc {0.5 setlinewidth pop 0 -2 M 12 4 L + -4 0 M 12 8 L -4 4 M 8 10 L stroke} +>> matrix makepattern +/Pat9 exch def +/Pattern1 {PatternBgnd KeepColor Pat1 setpattern} bind def +/Pattern2 {PatternBgnd KeepColor Pat2 setpattern} bind def +/Pattern3 {PatternBgnd KeepColor Pat3 setpattern} bind def +/Pattern4 {PatternBgnd KeepColor Landscape {Pat5} {Pat4} ifelse setpattern} bind def +/Pattern5 {PatternBgnd KeepColor Landscape {Pat4} {Pat5} ifelse setpattern} bind def +/Pattern6 {PatternBgnd KeepColor Landscape {Pat9} {Pat6} ifelse setpattern} bind def +/Pattern7 {PatternBgnd KeepColor Landscape {Pat8} {Pat7} ifelse setpattern} bind def +} def +% +% +%End of PostScript Level 2 code +% +/PatternBgnd { + TransparentPatterns {} {gsave 1 setgray fill grestore} ifelse +} def +% +% Substitute for Level 2 pattern fill codes with +% grayscale if Level 2 support is not selected. +% +/Level1PatternFill { +/Pattern1 {0.250 Density} bind def +/Pattern2 {0.500 Density} bind def +/Pattern3 {0.750 Density} bind def +/Pattern4 {0.125 Density} bind def +/Pattern5 {0.375 Density} bind def +/Pattern6 {0.625 Density} bind def +/Pattern7 {0.875 Density} bind def +} def +% +% Now test for support of Level 2 code +% +Level1 {Level1PatternFill} {Level2PatternFill} ifelse +% +/Symbol-Oblique /Symbol findfont [1 0 .167 1 0 0] makefont +dup length dict begin {1 index /FID eq {pop pop} {def} ifelse} forall +currentdict end definefont pop +% +% Encoding for ISO-8859-1 (also called Latin1) +% +/reencodeISO { +dup dup findfont dup length dict begin +{ 1 index /FID ne { def }{ pop pop } ifelse } forall +currentdict /CharStrings known { + CharStrings /Idieresis known { + /Encoding ISOLatin1Encoding def } if +} if +currentdict end definefont +} def +/ISOLatin1Encoding [ +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/space/exclam/quotedbl/numbersign/dollar/percent/ampersand/quoteright +/parenleft/parenright/asterisk/plus/comma/minus/period/slash +/zero/one/two/three/four/five/six/seven/eight/nine/colon/semicolon +/less/equal/greater/question/at/A/B/C/D/E/F/G/H/I/J/K/L/M/N +/O/P/Q/R/S/T/U/V/W/X/Y/Z/bracketleft/backslash/bracketright +/asciicircum/underscore/quoteleft/a/b/c/d/e/f/g/h/i/j/k/l/m +/n/o/p/q/r/s/t/u/v/w/x/y/z/braceleft/bar/braceright/asciitilde +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/dotlessi/grave/acute/circumflex/tilde/macron/breve +/dotaccent/dieresis/.notdef/ring/cedilla/.notdef/hungarumlaut +/ogonek/caron/space/exclamdown/cent/sterling/currency/yen/brokenbar +/section/dieresis/copyright/ordfeminine/guillemotleft/logicalnot +/hyphen/registered/macron/degree/plusminus/twosuperior/threesuperior +/acute/mu/paragraph/periodcentered/cedilla/onesuperior/ordmasculine +/guillemotright/onequarter/onehalf/threequarters/questiondown +/Agrave/Aacute/Acircumflex/Atilde/Adieresis/Aring/AE/Ccedilla +/Egrave/Eacute/Ecircumflex/Edieresis/Igrave/Iacute/Icircumflex +/Idieresis/Eth/Ntilde/Ograve/Oacute/Ocircumflex/Otilde/Odieresis +/multiply/Oslash/Ugrave/Uacute/Ucircumflex/Udieresis/Yacute +/Thorn/germandbls/agrave/aacute/acircumflex/atilde/adieresis +/aring/ae/ccedilla/egrave/eacute/ecircumflex/edieresis/igrave +/iacute/icircumflex/idieresis/eth/ntilde/ograve/oacute/ocircumflex +/otilde/odieresis/divide/oslash/ugrave/uacute/ucircumflex/udieresis +/yacute/thorn/ydieresis +] def +/MFshow { + { dup 5 get 3 ge + { 5 get 3 eq {gsave} {grestore} ifelse } + {dup dup 0 get findfont exch 1 get scalefont setfont + [ currentpoint ] exch dup 2 get 0 exch R dup 5 get 2 ne {dup dup 6 + get exch 4 get {Gshow} {stringwidth pop 0 R} ifelse }if dup 5 get 0 eq + {dup 3 get {2 get neg 0 exch R pop} {pop aload pop M} ifelse} {dup 5 + get 1 eq {dup 2 get exch dup 3 get exch 6 get stringwidth pop -2 div + dup 0 R} {dup 6 get stringwidth pop -2 div 0 R 6 get + show 2 index {aload pop M neg 3 -1 roll neg R pop pop} {pop pop pop + pop aload pop M} ifelse }ifelse }ifelse } + ifelse } + forall} def +/Gswidth {dup type /stringtype eq {stringwidth} {pop (n) stringwidth} ifelse} def +/MFwidth {0 exch { dup 5 get 3 ge { 5 get 3 eq { 0 } { pop } ifelse } + {dup 3 get{dup dup 0 get findfont exch 1 get scalefont setfont + 6 get Gswidth pop add} {pop} ifelse} ifelse} forall} def +/MLshow { currentpoint stroke M + 0 exch R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/MRshow { currentpoint stroke M + exch dup MFwidth neg 3 -1 roll R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/MCshow { currentpoint stroke M + exch dup MFwidth -2 div 3 -1 roll R + Blacktext {gsave 0 setgray MFshow grestore} {MFshow} ifelse } bind def +/XYsave { [( ) 1 2 true false 3 ()] } bind def +/XYrestore { [( ) 1 2 true false 4 ()] } bind def +/Helvetica reencodeISO def +Level1 SuppressPDFMark or +{} { +/SDict 10 dict def +systemdict /pdfmark known not { + userdict /pdfmark systemdict /cleartomark get put +} if +SDict begin [ + /Title () + /Subject (gnuplot plot) + /Creator (gnuplot 4.6 patchlevel 6) + /Author (afanfakh) +% /Producer (gnuplot) +% /Keywords () + /CreationDate (Thu Oct 22 17:45:34 2015) + /DOCINFO pdfmark +end +} ifelse +end +%%EndProlog +%%Page: 1 1 +gnudict begin +gsave +doclip +50 50 translate +0.100 0.100 scale +0 setgray +newpath +(Helvetica) findfont 110 scalefont setfont +BackgroundColor 0 lt 3 1 roll 0 lt exch 0 lt or or not {gsave BackgroundColor C clippath fill grestore} if +1.000 UL +LTb +605 352 M +63 0 V +4173 0 R +-63 0 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Szyld} issn = {1542-7730}, pages = {54--62}, numpages = {9}, + url = {http://doi.acm.org/10.1145/1095408.1095421}, + doi = {10.1145/1095408.1095421}, acmid = {1095421}, publisher = {ACM}, address = {New York, NY, USA} @@ -1071,4 +1073,42 @@ ISSN={1550-6533}, month={Oct} } - +@MISC{ref101, + title = {{TOP500 Supercomputers Sites}}, + url = {http://www.top500.org} +} + +@MISC{ref102, + title = {{U.S. Energy Information Administration, Annual Energy Outlook 2015}}, + url = {http://www.eia.gov/} +} + + +@ARTICLE{ref103, +author={Zapater, M. and Tuncer, O. and Ayala, J.L. and Moya, J.M. and Vaidyanathan, K. and Gross, K. and Coskun, A.K.}, +journal={Parallel and Distributed Systems, IEEE Transactions on}, +title={Leakage-Aware Cooling Management for Improving Server Energy Efficiency}, +year={2015}, +volume={26}, +number={10}, +pages={2764-2777}, +month={Oct} +} + +@inproceedings{ref104, + author = {Zapater, Marina and Ayala, Jose L. and Moya, Jos{\'e} M. and Vaidyanathan, Kalyan and Gross, Kenny and Coskun, Ayse K.}, + title = {Leakage and Temperature Aware Server Control for Improving Energy Efficiency in Data Centers}, + booktitle = {Proceedings of the Conference on Design, Automation and Test in Europe}, + year = {2013}, + isbn = {978-1-4503-2153-2}, + location = {Grenoble, France}, + pages = {266--269}, + numpages = {4}, + address = {San Jose, CA, USA} +} + +@MISC{ref105, + title = {{The Green500 List of Heterogeneous Supercomputing Systems}}, + url = {http://www.green500.org} +} +