[Beowulf] NUMA info request
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Lombard, David N dnlombar at ichips.intel.comTue Mar 25 08:58:06 PDT 2008
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On Tue, Mar 25, 2008 at 06:58:58AM -0400, Mark Kosmowski wrote: > > This discussion as well as reading about NUMA and affinity elsewhere > leads to another question - what is the difference between using > numactl or using the affinity options of my parallelization software > (in my case openmpi)? OpenMPI will handle to affinity for you for each rank of your job within the context of your MPI job; using the external utils will require you to manage this yourself on a process- by-process basis. -- David N. Lombard, Intel, Irvine, CA I do not speak for Intel Corporation; all comments are strictly my own.
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