Fair enough. Clearly I'm not reading well today. On Mon, Aug 26, 2013 at 1:33 PM, Jeff Squyres (jsquyres) <[email protected]

wrote:

First mention of it is on slide 4, "Re-initionaliztion of MPI". :-)

Then lots more discussion about it starting effectively with slide 7, e.g., "New INIT behavior ... If MPI is not currently initialized // Initialize MPI / start a new MPI epoch // This can happen multiple times in a process".

No code examples until late in the slides, though.

On Aug 26, 2013, at 2:22 PM, Wesley Bland <[email protected]> wrote:

...

That sounds good to me. I just didn't see that in the slides until one of the corner cases.

Thanks, Wesley

On Mon, Aug 26, 2013 at 1:20 PM, Pavan Balaji <[email protected]> wrote:

That's one of the proposed changes.

On 08/26/2013 01:06 PM, Wesley Bland wrote: Am I mistaken in remembering that MPI doesn't allow an application to go in and out of MPI:

INIT .... FINALIZE .... INIT .... FINALIZE

I've looked at the standard and that's what Section 8.7 says to me. So am I correct in assuming that this will change that text to say that you can start, stop, and start new "MPI epochs"?

Thanks, Wesley

On Mon, Aug 26, 2013 at 12:10 PM, Jeff Squyres (jsquyres) <[email protected] <mailto:[email protected]>> wrote:

The hybrid working group will be hosting a plenary on Friday afternoon in Madrid.

We will be presenting a proposal on MPI_INIT/MPI_FINALIZE regarding interaction with threads (going back to the use cases Jeff Hammond raised at a prior Forum meeting), and nested MPI_INIT/MPI_FINALIZE. This is not a formal reading; we're requesting Forum feedback on the overall ideas.

The slides are attached. See you in Madrid.

-- Jeff Squyres [email protected] <mailto:[email protected]>

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

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