What version of OMPI are you using? The behavior depends on the version... On Apr 19, 2010, at 2:01 PM, Martin Siegert wrote:
> Hi, > > I am wondering what effects it will have when I configure openmpi > with --enable-mpi-threads: we are using the TM interface to torque > and therefore each MPI program gets assigned a certain number of cores > on a set of nodes by the scheduler. If the MPI program now starts > additional threads how does that work? > - will this lead to an oversubscription of nodes > or > - will the creation of additional threads fail, if the number of > processes on a node has reached the process count on that node > assigned through torque? > > How is this done properly? > > Thanks! > > Cheers, > Martin > > -- > Martin Siegert > Head, Research Computing > WestGrid Site Lead > IT Services phone: 778 782-4691 > Simon Fraser University fax: 778 782-4242 > Burnaby, British Columbia email: sieg...@sfu.ca > Canada V5A 1S6 > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
