From 2718f24925547f10f3564d40d8f62ede4e43336d Mon Sep 17 00:00:00 2001 From: couturie Date: Fri, 8 May 2015 10:37:05 +0200 Subject: [PATCH] modif de la partie async --- paper.tex | 27 ++++++++++++++------------- 1 file changed, 14 insertions(+), 13 deletions(-) diff --git a/paper.tex b/paper.tex index 7e740ec..54162a9 100644 --- a/paper.tex +++ b/paper.tex @@ -700,7 +700,7 @@ more than $75\%$ (resp. $82\%$) of the execution for the classical GMRES \end{table} -\begin{figure} [ht!] +\begin{figure} [htbp] \centering \includegraphics[width=100mm]{network_bandwith_impact_on_execution_time.pdf} \caption{Network bandwith impacts on execution time @@ -730,7 +730,7 @@ of $40\%$ which is only around $24\%$ for the classical GMRES. \end{table} -\begin{figure} [ht!] +\begin{figure} [htbp] \centering \includegraphics[width=100mm]{pb_size_impact_on_execution_time.pdf} \caption{Problem size impacts on execution time} @@ -759,7 +759,7 @@ grid 2 $\times$ 16 leading to the same conclusion. \subsubsection{CPU Power impacts on performance} -\begin{table} [ht!] +\begin{table} [htbp] \centering \begin{tabular}{r c } \hline @@ -811,18 +811,19 @@ synchronization with the other processors. Thus, the asynchronous may theoretically reduce the overall execution time and can improve the algorithm performance. -\RC{la phrase suivante est bizarre, je ne comprends pas pourquoi elle vient ici} -\RCE{C est la description du dernier test sync/async avec l'introduction de la notion de relative gain} -In this section, Simgrid simulator tool has been successfully used to show -the efficiency of the multisplitting in asynchronous mode and to find the best -combination of the grid resources (CPU, Network, input matrix size, \ldots ) to -get the highest \textit{"relative gain"} (exec\_time$_{GMRES}$ / -exec\_time$_{multisplitting}$) in comparison with the classical GMRES time. +In this section, the Simgrid simulator is used to compare the behavior of the +multisplitting in asynchronous mode with GMRES in synchronous mode. Several +benchmarks have been performed with various combination of the grid resources +(CPU, Network, input matrix size, \ldots ). The test conditions are summarized +in Table~\ref{tab:07}. In order to compare the execution times, this table +reports the relative gain between both algorithms. It is defined by the ratio +between the execution time of GMRES and the execution time of the +multisplitting. The ration is greater than one because the asynchronous +multisplitting version is faster than GMRES. -The test conditions are summarized in the table~\ref{tab:07}: \\ -\begin{table} [ht!] +\begin{table} [htbp] \centering \begin{tabular}{r c } \hline @@ -872,7 +873,7 @@ geographically distant clusters through the internet. power (GFlops) & 1 & 1 & 1 & 1.5 & 1.5 & 1.5 & 1.5 & 1 & 1.5 & 1.5 \\ \hline - size (N) + size ($N^3$) & 62 & 62 & 62 & 100 & 100 & 110 & 120 & 130 & 140 & 150 \\ \hline Precision -- 2.39.5