[Mpi3-hybridpm] First cut at slides

Jeff Squyres (jsquyres) jsquyres at cisco.com
Tue Jun 18 11:00:21 CDT 2013

On Jun 18, 2013, at 11:25 AM, Jeff Hammond <jhammond at alcf.anl.gov> wrote:

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

Technically speaking, no.  FINALIZE is collective over all connected processes (where "connected" includes those who have not yet DISCONNECTed).  

In one sense, everyone disconnects because FINALIZE completes.  But technically, none of them explicitly called DISCONNECT.

> Could we add that behavior without
> breaking existing semantics?

Getting more specific on FINALIZE semantics is a deep, dark, rat hole with dragons and other terrible monsters in it...

Jeff Squyres
jsquyres at cisco.com
For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/

More information about the mpiwg-hybridpm mailing list