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 <ckut...@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 > > > > > -- > gmx-users mailing list gmx-us...@gromacs.org > http://lists.gromacs.org/mailman/listinfo/gmx-users > Please search the archive at > http://www.gromacs.org/Support/Mailing_Lists/Search before posting! > Please don't post (un)subscribe requests to the list. Use the > www interface or send it to gmx-users-requ...@gromacs.org. > Can't post? Read http://www.gromacs.org/Support/Mailing_Lists > -- gmx-users mailing list gmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/Search before posting! Please don't post (un)subscribe requests to the list. Use the www interface or send it to gmx-users-requ...@gromacs.org. Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
