You probably want to use the rank file mapper and/or the slot_list capability. See the following for more info:
http://www.open-mpi.org/faq/?category=tuning#using-paffinity-v1.3 On Feb 20, 2012, at 1:05 PM, Jeff Layton wrote: > Good afternoon, > > I'm working with some AMD Interlagos nodes (16-core, 4-socket), > and I want to bind processes to cores in specific layouts. These > may not be in logical order so I need to be able to my MPI app > and point it to specific cores on specific nodes (although the > core ordering is the same for all nodes). > > I'm assuming I need to "manually" start the processes using > orted (or orterun) and numactl on the specific cores. Since I've > never used orted or orterun to start jobs and I'm struggling with > the man pages a bit - any suggestions? > > Thanks! > > Jeff > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
