From fd654bb9a37efb3530aed230af886466bbb7f42a Mon Sep 17 00:00:00 2001 From: raphael couturier Date: Wed, 30 Apr 2014 16:48:01 +0200 Subject: [PATCH] new --- krylov_multi.tex | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/krylov_multi.tex b/krylov_multi.tex index ff5e848..92730ac 100644 --- a/krylov_multi.tex +++ b/krylov_multi.tex @@ -276,9 +276,11 @@ preconditioner it is possible to reduce the number of iterations but preconditioners are not scalable when using many cores. %Doing many experiments with many cores is not easy and requires to access to a supercomputer with several hours for developing a code and then improving it. -In the following we present some experiments we could achieved out on the -Hector architecture, the previous UK's high-end computing resource, funded by -the UK Research Councils, which has been stopped in the early 2014. +In the following we present some experiments we could achieved out on the Hector +architecture, the previous UK's high-end computing resource, funded by the UK +Research Councils. This is a Cray XE6 supercomputer, equipped with two 16-core +AMD Opteron 2.3 Ghz and 32 GB of memory. Machines are interconnected with a 3D +torus. Table~\ref{tab1} shows the result of the experiments. The first column shows the size of the 3D Poisson problem. The size is chosen in order to have -- 2.39.5