[gmx-users] Gromacs 4.5.1 on 48 core magny-cours AMDs

[Ondrej Marsalek]

Hi,

FWIW, I have recently asked about this in the hwloc mailing list:

http://www.open-mpi.org/community/lists/hwloc-users/2010/10/0232.php

In general, hwloc is a useful tool for these things.

http://www.open-mpi.org/projects/hwloc/

Best,
Ondrej


On Thu, Oct 21, 2010 at 12:03, Carsten Kutzner <ckutzne at gwdg.de> wrote:
> Hi,
>
> does anyone have experience with AMD's 12-core Magny-Cours
> processors? With 48 cores on a node it is essential that the processes
> are properly pinned to the cores for optimum performance.  Numactl
> can do this, but at the moment I do not get good performance with
> 4.5.1 and threads, which still seem to be migrating around.
>
> Carsten
>
>
> --
> Dr. Carsten Kutzner
> Max Planck Institute for Biophysical Chemistry
> Theoretical and Computational Biophysics
> Am Fassberg 11, 37077 Goettingen, Germany
> Tel. +49-551-2012313, Fax: +49-551-2012302
> http://www.mpibpc.mpg.de/home/grubmueller/ihp/ckutzne
>
>
>
>
> --
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