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From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2005-08-16 11:25:32

Processor affinity is now implemented. You must ask for it via the MCA
param "mpi_paffinity_alone". If this parameter is set to a nonzero
value, OMPI will assume that its job is alone on the nodes that it is
running on, and, if you have not oversubscribed the node, will bind MPI
processes to processors, starting with processor ID 0 (i.e.,
effectively bindings MPI processes to the processor number equivalent
to their relative VPID on that node).

Please let me know how this works out for everyone; thanks.

{+} Jeff Squyres
{+} The Open MPI Project