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Showing results 1 to 9 of 9 Search took 0.00 seconds. Search: Posts Made By: pablodecastillo

Forum: OpenFOAM Running, Solving & CFD June 14, 2012, 14:22

Replies: 22 OpenFoam and OpenMPI Views: 5,428 Posted By pablodecastillo If you send me one email, i can send you the AMD... If you send me one email, i can send you the AMD paper.

Forum: OpenFOAM Running, Solving & CFD June 14, 2012, 13:28

Replies: 22 OpenFoam and OpenMPI Views: 5,428 Posted By pablodecastillo Hello, There is a document from AMD for HPC... Hello, There is a document from AMD for HPC computing, because to really improve the performance, you must compile with recomended flags and modify the BIOS.

Forum: OpenFOAM Running, Solving & CFD April 24, 2012, 04:27

Replies: 22 OpenFoam and OpenMPI Views: 5,428 Posted By pablodecastillo Any idea how compile Openfoam with Open64? Any idea how compile Openfoam with Open64?

Forum: OpenFOAM Running, Solving & CFD April 23, 2012, 17:31

Replies: 22 OpenFoam and OpenMPI Views: 5,428 Posted By pablodecastillo Hi Bruno, It seems that -mprefer-avx128 is... Hi Bruno, It seems that -mprefer-avx128 is the mainly factor to improve the speed. Did u get improved speed with 4.7? Thanks

Forum: OpenFOAM Running, Solving & CFD April 23, 2012, 17:02

Replies: 22 OpenFoam and OpenMPI Views: 5,428 Posted By pablodecastillo Hi Bruno, This afternoon i added c++OPT ... Hi Bruno, This afternoon i added c++OPT = -O3 -mprefer-avx128 -ftree-vectorize -ffast-math (same for cOpt), I got 20 to 25 better performance on speed , it was with gcc 4.6. Tomorrow i...

Forum: OpenFOAM Running, Solving & CFD April 23, 2012, 08:30

Replies: 22 OpenFoam and OpenMPI Views: 5,428 Posted By pablodecastillo Hi Bruno, Can you shared that proper... Hi Bruno, Can you shared that proper optimization options for AMD? Mine OF was compiled with Gcc 4.6.1, default options. Pablo

Forum: OpenFOAM Running, Solving & CFD April 23, 2012, 07:28

Replies: 22 OpenFoam and OpenMPI Views: 5,428 Posted By pablodecastillo Thanks Bruno and Olivier, At the end it is a... Thanks Bruno and Olivier, At the end it is a problem with the architecture machine, it is a AMD opteron 64 cores ( 4 socket with 16 cores ), it is sharing the floating point unit between 2 cores,...

Forum: OpenFOAM Running, Solving & CFD April 22, 2012, 12:52

Replies: 22 OpenFoam and OpenMPI Views: 5,428 Posted By pablodecastillo It seems that updating to 1.5.3 openmpi it is... It seems that updating to 1.5.3 openmpi it is improving , but not enough, no ideas??

Forum: OpenFOAM Running, Solving & CFD April 20, 2012, 14:04

Replies: 22 OpenFoam and OpenMPI Views: 5,428 Posted By pablodecastillo OpenFoam and OpenMPI Hello, I am testing a machine with 64 (2.2 Ghz) cores (16x4), my problem is optimized to run in 8 cores. If i send 1 job (partition in 8 cores ) , the job need over 1000 second to get 1 second...

Showing results 1 to 9 of 9

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