Hi Rayson: On 1/20/08, Rayson Ho <[EMAIL PROTECTED]> wrote:
Long time no talk! > 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 Thanks for the information. I get the sense that CPU affinity is beneficial even for embarrassingly/serial jobs -- however I am curious whether anybody has actual numbers to back this? And is the potential benefits worth the time/effort to set this up rather than let the default Linux scheduler deal with it. Cheers, Bernard _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
