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Hi,<br><br>We haven't observed any problems running with threads over 24 core AMD nodes (4x6 cores).<br><br>Berk<br><br>> From: ckutzne@gwdg.de<br>> Date: Thu, 21 Oct 2010 12:03:00 +0200<br>> To: gmx-users@gromacs.org<br>> Subject: [gmx-users] Gromacs 4.5.1 on 48 core magny-cours AMDs<br>> <br>> Hi,<br>> <br>> does anyone have experience with AMD's 12-core Magny-Cours<br>> processors? With 48 cores on a node it is essential that the processes<br>> are properly pinned to the cores for optimum performance. Numactl<br>> can do this, but at the moment I do not get good performance with<br>> 4.5.1 and threads, which still seem to be migrating around.<br>> <br>> Carsten<br>> <br>> <br>> --<br>> Dr. Carsten Kutzner<br>> Max Planck Institute for Biophysical Chemistry<br>> Theoretical and Computational Biophysics<br>> Am Fassberg 11, 37077 Goettingen, Germany<br>> Tel. +49-551-2012313, Fax: +49-551-2012302<br>> http://www.mpibpc.mpg.de/home/grubmueller/ihp/ckutzne<br>> <br>> <br>> <br>> <br>> -- <br>> gmx-users mailing list gmx-users@gromacs.org<br>> http://lists.gromacs.org/mailman/listinfo/gmx-users<br>> Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/Search before posting!<br>> Please don't post (un)subscribe requests to the list. Use the <br>> www interface or send it to gmx-users-request@gromacs.org.<br>> Can't post? Read http://www.gromacs.org/Support/Mailing_Lists<br> </body>
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