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From: Li-Ta Lo (ollie_at_[hidden])
Date: 2007-04-03 11:32:38


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