[Mpi3-hybridpm] Minutes of 10/27 concall

Pavan Balaji balaji at mcs.anl.gov
Tue Oct 27 11:58:30 CDT 2009

Thanks Darius.

All -- I've uploaded the meeting minutes here:

If you have attended the call, please send me a note and I'll add you in.


 -- Pavan

On 10/27/2009 11:33 AM, Darius Buntinas wrote:
> I apologize for not getting a list of all attendees.
> A few questions were raised about Marc's proposal:
> Can the max number of threads be different on different nodes?  We
> figured that they can be different, but this should be mentioned in the
> proposal.
> How would an MPI process start UPC threads?  UPC has a separate
> launching mechanism, so how would that interact with MPI?  One proposal
> was that UPC would start the threads outside of MPI, then be reparented
> to the MPI process.  So UPC would give the EWORLD communicator to MPI.
> Another proposal is that MPI would create the EWORLD comunicator then
> pass that to the UPC starting mechanism.  In either case some interface
> glue would be needed between the UPC and MPI implementations.
> A request was made that we should go through each existing ticket and
> indicate how Marc's proposal addresses the issues in the ticket.
> Similarly, there should be a ticket opened up for Marc's proposal.
> If I missed anything, or misrepresented something please let me know.
> -d
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Pavan Balaji

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