[Mpi3-hybridpm] Better Forum INIT/FINALIZE slides

Pavan Balaji balaji at mcs.anl.gov
Mon Jul 29 14:10:13 CDT 2013


Jeff,

We need to decide on INITIALIZED/FINALIZED vs. IS_WITHIN_EPOCH in the 
working group and take the final decision to the Forum, instead of 
wasting the Forum's time on that.

  -- Pavan

On 07/29/2013 11:43 AM, Jeff Squyres (jsquyres) wrote:
> I made a few more edits while Brian/Jim/Keith/Pavan are still arguing.  :-)
>
> Here's a new copy...
>
>
>
>
>
> On Jul 29, 2013, at 12:32 PM, Jeff Squyres <jsquyres at cisco.com>
>   wrote:
>
>> Here's a new copy of the slides; if we have time today, we can discuss.
>>
>> I took all feedback, except I disagreed with Steve's #5 and #8.
>>
>>
>>
>> On Jul 17, 2013, at 9:22 AM, Pavan Balaji <balaji at mcs.anl.gov> wrote:
>>
>> > Jeff,
>> >
>> > Some comments --
>> >
>> > 1. Slide 2: The main goals need to be rephrased.  The goals are to overcome limitations while using MPI in stacked and threaded libraries.  For stacked libraries, the single INIT/FINALIZE limitation requires each library to have global knowledge on who  else is using MPI.  For threaded libraries, there are race conditions.
>> >
>> > 2. Slide 5: Sorry, I missed this earlier.  I'm not in favor of changing the current definitions of IS_INITIALIZED and IS_FINALIZED.  Better to deprecate them and add MPI_IS_WITHIN_EPOCH.
>> >
>> > 3. Slide 10: I don't think we agreed that the requested level will be ignored by subsequent calls.  That's a quality of implementation issue.
>> >
>> > 4. Slide 15: We can say that our current stand is to remove that restriction that the "main thread" needs to finalize.
>> >
>> > Btw, I've requested for plenary time.
>> >
>> > -- Pavan
>> >
>> > On 07/15/2013 12:45 PM, Jeff Squyres (jsquyres) wrote:
>> >> Here's a better cut of slides that are more Forum-friendly.
>> >>
>> >> Comments welcome.
>> >>
>> >> (Pavan: I'm correct in thinking that you're getting plenary time from Martin for this, right?)
>> >>
>> >>
>> >>
>> >> _______________________________________________
>> >> Mpi3-hybridpm mailing list
>> >> Mpi3-hybridpm at lists.mpi-forum.org
>> >>http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-hybridpm
>> >>
>> >
>> > --
>> > Pavan Balaji
>> >http://www.mcs.anl.gov/~balaji
>>
>>
>> --
>> Jeff Squyres
>> jsquyres at cisco.com
>> For corporate legal information go to:http://www.cisco.com/web/about/doing_business/legal/cri/
>>
>> <init-finalize-issues-for-forum.pptx>
>
>
> --
> Jeff Squyres
> jsquyres at cisco.com
> For corporate legal information go to:
> http://www.cisco.com/web/about/doing_business/legal/cri/
>

-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji



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