[Mpi3-hybridpm] endpoint proposal

Pavan Balaji balaji at mcs.anl.gov
Sat May 22 11:57:08 CDT 2010

On 05/19/2010 06:55 PM, Snir, Marc wrote:
> Page 20 -- do we want MPI_COMM_MERGE? Useful but takes a while to explain

FWIW, I've talked to Torsten about pursuing this in the collectives 
working group, as that's where it really belongs.

Using an MPI_COMM_MERGE function is *much* more cleaner than the 
extraction of endpoints from each process like was previously proposed, 
IMHO. The only major issue raised was that this is probably the only 
function that's collective over two communicators, instead of one.

  -- Pavan

Pavan Balaji

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