From: raphael couturier Date: Fri, 11 Jul 2014 13:46:48 +0000 (+0200) Subject: commit de david X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/hpcc2014.git/commitdiff_plain/HEAD commit de david --- diff --git a/hpcc.tex b/hpcc.tex index cbd1e9c..d1ce8c8 100644 --- a/hpcc.tex +++ b/hpcc.tex @@ -187,8 +187,8 @@ generated. It is possible to use asynchronous communications, in this case, the model can be compared to the previous one except that data required on another processor are sent asynchronously i.e. without stopping current computations. This technique allows communications to be partially overlapped by computations -but unfortunately, the overlapping is only partial and important idle times -remain. It is clear that, in a grid computing context, where the number of +but unfortunately, the overlapping is only partial and useless idle times used for synchronization remain. +It is clear that, in a grid computing context, where the number of computational nodes is large, heterogeneous and widely distributed, the idle times generated by synchronizations are very penalizing. One way to overcome this problem is to use the asynchronous iterations model. Here, local