[Mpi3-hybridpm] First cut at slides

Jeff Squyres (jsquyres) jsquyres at cisco.com
Tue Jun 18 09:27:03 CDT 2013

On Jun 18, 2013, at 9:54 AM, Jeff Hammond <jhammond at alcf.anl.gov> wrote:

> I don't see the issue with connected dynamic processes and finalize.  Doesn't each process just wait until count=0 to actually finalize?  In this case, is it not sufficient for each process to use its local ref count?  Your slide looks fine to me.  What's the example where borkification happens?

The issue is that finalize might actually need to do something synchronizing between all connected processes.  I think it therefore might actually cause connected processes to block until everyone actually finalizes (vs. calling FINALIZE).

But maybe that isn't disastrous.  If you don't want that (potential) behavior, you should COMM_DISCONNECT before finalize.

Jeff Squyres
jsquyres at cisco.com
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