From f622eef95fe3973773527fa3260b7563a498ec60 Mon Sep 17 00:00:00 2001 From: Arnaud Giersch Date: Mon, 11 Feb 2013 16:08:36 +0100 Subject: [PATCH] Be more precise in platform description. --- supercomp11/supercomp11.tex | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-) diff --git a/supercomp11/supercomp11.tex b/supercomp11/supercomp11.tex index 1faf1b0..db3e809 100644 --- a/supercomp11/supercomp11.tex +++ b/supercomp11/supercomp11.tex @@ -251,7 +251,7 @@ he proceeds as following. \section{Other strategies} \label{Other} -\FIXME{Réécrire en angliche.} +\FIXME{Réécrire en anglais.} % \FIXME{faut-il décrire les stratégies makhoul et simple ?} @@ -508,16 +508,21 @@ settings, we simulated the executions on two sorts of platforms. These two sorts of platforms differ by their underlaid network topology. On the one hand, we have homogeneous platforms, modeled as a cluster. On the other hand, we have heterogeneous platforms, modeled as the interconnection of a number of clusters. + +The clusters were modeled by a fixed number of computing nodes interconnected +through a backbone link. Each computing node has a computing power of +1~GFlop/s, and is connected to the backbone by a network link whose bandwidth is +of 125~MB/s, with a latency of 50~$\mu$s. The backbone has a network bandwidth +of 2.25~GB/s, with a latency of 500~$\mu$s. + The heterogeneous platform descriptions were created by taking a subset of the Grid'5000 infrastructure\footnote{Grid'5000 is a French large scale experimental Grid (see \url{https://www.grid5000.fr/}).}, as described in the platform file \texttt{g5k.xml} distributed with SimGrid. Note that the heterogeneity of the -platform only comes from the network topology. The processor speeds, and -network bandwidths were normalized since our algorithms currently are not aware -of such heterogeneity. We arbitrarily chose to fix the processor speed to -1~GFlop/s, and the network bandwidth to 125~MB/s, with a latency of 50~$\mu$s, -except for the links between geographically distant sites, where the network -bandwidth was fixed to 2.25~GB/s, with a latency of 500~$\mu$s. +platform here only comes from the network topology. Indeed, since our +algorithms currently do not handle heterogeneous computing resources, the +processor speeds were normalized, and we arbitrarily chose to fix them to +1~GFlop/s. Then we derived each sort of platform with four different number of computing nodes: 16, 64, 256, and 1024 nodes. @@ -658,4 +663,4 @@ Taille : 10 100 très gros % LocalWords: Raphaël Couturier Arnaud Giersch Abderrahmane Sider Franche ij % LocalWords: Bertsekas Tsitsiklis SimGrid DASUD Comté Béjaïa asynchronism ji -% LocalWords: ik isend irecv Cortés et al chan ctrl fifo Makhoul +% LocalWords: ik isend irecv Cortés et al chan ctrl fifo Makhoul GFlop xml -- 2.39.5