We don't really have this kind of fine-grained processor affinity
control in Open MPI yet.
Is there a reason you want to oversubscribe cores this way? Open MPI
assumes that each process should be as aggressive as possible in
terms of performance -- spinning heavily until progress can be made
on message passing, etc.
On Oct 23, 2007, at 3:15 PM, Siamak Riahi wrote:
I have a question about using the open mpi.
I want to tie "N" number of processes to one core and "M" number of
processes to another core. I want to know if open mpi is capable of
doing that.
Thanks,
Siamak
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Jeff Squyres
Cisco Systems
