On Apr 27, 2012, at 5:20 PM, Jens Glaser wrote: > Hi, > > we've tried to use a multithreaded application with a more recent trunk > version (March 21) of OpenMPI. We need to use this version because of CUDA > RDMA support. OpenMPI was binding all the threads to a single core, which is > undesirable. > In OpenMPI 1.5. there was an option --cpus-per-rank, which should have helped > in this case, or --bind-to-none.
--cpus-per-rank is turned "off" at the moment - needs to be updated --bind-to none is the appropriate syntax - that should be the default setting, unless you are specifying a binding policy somewhere in an MCA param. see mpirun -h for the full list of options > > Unfortunately, these options are now gone and I couldn't figure out how to > make it work with the newest version. > > Can anyone offer any hints on this? > > Thanks, > Jens. > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
