On Sun, 2007-04-01 at 13:12 -0600, Ralph Castain wrote: > > 2. I'm not sure what you mean by mapping MPI processes to "physical" > processes, but I assume you mean how do we assign MPI ranks to processes on > specific nodes. You will find that done in the orte/mca/rmaps framework. We > currently only have one component in that framework - the round-robin > implementation - that maps either by slot or by node, as indicated by the > user. That code is fairly heavily commented, so you hopefully can understand > what it is doing. >
How does this work in a multi-core environment? the optimal way may be putting processes on every other "slot" on a two cores system? Ollie
