On Jan 18, 2008 5:53 PM, Bernard Li <[EMAIL PROTECTED]> wrote: > -- but I'd also like to hear whether there are any general performance > benefits to setting CPU affinity. Do major schedulers support this? > Would this help with embarrassingly parallel jobs VS large MPI jobs on > manycore machines?
I am working on adding processor affinity support for serial and parallel jobs for Grid Engine, and I am working with the OpenMPI developers to define an interface. http://gridengine.sunsource.net/servlets/BrowseList?list=dev&by=thread&from=27044 http://www.open-mpi.org/community/lists/devel/2008/01/2949.php http://www.open-mpi.org/community/lists/devel/2008/01/2964.php BTW, LSF 7.0.2 supports processor affinity for serial jobs. However, supporting processor affinity for serial jobs is only useful when the OS scheduler is dumb... See also: "Enhancing an Open Source Resource Manager with Multi-Core/Multi-threaded Support" -- this paper talks about the support of processor affinity in SLURM: http://www.cs.huji.ac.il/~feit/parsched/jsspp07/p2-balle.pdf Rayson > > Thanks, > > Bernard > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf > _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
