From: Arnaud Giersch <arnaud.giersch@univ-fcomte.fr>
Date: Tue, 22 Apr 2014 14:38:31 +0000 (+0200)
Subject: One more paragraph about SimGrid.
X-Git-Tag: hpcc2014_submission~85
X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/hpcc2014.git/commitdiff_plain/24400babde542e8ed9b839275e0a6981e5f2c90e?hp=--cc

One more paragraph about SimGrid.
---

24400babde542e8ed9b839275e0a6981e5f2c90e
diff --git a/hpcc.tex b/hpcc.tex
index c9606c3..cb24ced 100644
--- a/hpcc.tex
+++ b/hpcc.tex
@@ -235,21 +235,22 @@ SimGrid provides several programming interfaces: MSG to simulate Concurrent
 Sequential Processes, SimDAG to simulate DAGs of (parallel) tasks, and SMPI to
 run real applications written in MPI~\cite{MPI}.  Apart from the native C
 interface, SimGrid provides bindings for the C++, Java, Lua and Ruby programming
-languages.  The SMPI interface supports applications written in C or Fortran,
-with little or no modifications.  SMPI implements about \np[\%]{80} of the MPI
-2.0 standard~\cite{bedaride:hal-00919507}.
-
-%%% explain simulation
-%- simulated processes folded in one real process
-%- simulates interactions on the network, fluid model
-%- able to skip long-lasting computations
-%- traces + visu?
-
-%%% platforms
-%- describe resources and their interconnection, with their properties
-%- XML files
-
-%%% validation + refs
+languages.  SMPI is the interface that has been used for the work exposed in
+this paper.  The SMPI interface implements about \np[\%]{80} of the MPI 2.0
+standard~\cite{bedaride:hal-00919507}, and supports applications written in C or
+Fortran, with little or no modifications.
+
+With SimGrid, the execution of a distributed application is simulated on a
+single machine.  The application code is really executed, but some operations
+like the communications are intercepted to be simulated according to the
+characteristics of the simulated execution platform.  The description of this
+target platform is given as an input for the execution, by the mean of an XML
+file.  It describes the properties of the platform, such as the computing node
+with their computing power, the interconnection links with their bandwidth and
+latency, and the routing strategy.  The simulated running time of the
+application is computed according to these properties.
+
+\AG{Faut-il ajouter quelque-chose ?}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \section{Simulation of the multisplitting method}