From: jean-claude Date: Mon, 23 May 2016 14:29:41 +0000 (+0200) Subject: changes X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/mpi-energy2.git/commitdiff_plain/e672eb77409109db90a31028809573baa1a1301e?ds=sidebyside;hp=--cc changes --- e672eb77409109db90a31028809573baa1a1301e diff --git a/mpi-energy2-extension/Heter_paper.tex b/mpi-energy2-extension/Heter_paper.tex index e876264..9d6d7cd 100644 --- a/mpi-energy2-extension/Heter_paper.tex +++ b/mpi-energy2-extension/Heter_paper.tex @@ -484,9 +484,9 @@ In the considered heterogeneous grid platform, each node $j$ in cluster $i$ may 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 +in cluster $i$ noted $\Tcp[ij]$ may be slightly different due to the delay caused by the scheduler of the operating system. Therefore, 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 +and reduce the 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:heter}. Therefore, all nodes do not have equal communication times. While the dynamic energy is computed according to the