Not per se, but you could set the #slots to 12, and then add rmaps_base_no_oversubscribe = 1
to your default MCA param file. That would do what you describe. On Nov 1, 2012, at 4:21 PM, David Turner <dptur...@lbl.gov> wrote: > Hi, > > Is there a way to limit the number of tasks started by mpirun? > For example, on our 48-core SMP, I'd like to limit MPI jobs to > a maximum of 12 tasks. That is, "mpirun -np 16 ..." would > return an error. Note that this is a strictly interactive > system; no batch environment available. > > I've just quickly scanned the MCA parameters: > > ompi_info --param all all > > and couldn't find the answer to my question. > > Thanks! > > -- > Best regards, > > David Turner > User Services Group email: dptur...@lbl.gov > NERSC Division phone: (510) 486-4027 > Lawrence Berkeley Lab fax: (510) 486-4316 > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
