[Mpi3-rma] mpi3-rma post from bradc at cray.com requires approval
balaji at mcs.anl.gov
Sat Jun 5 14:18:18 CDT 2010
On 06/05/2010 10:54 AM, Underwood, Keith D wrote:
> Yeah, (4) exists, but I didn't list it because, as you observe, (2)
> is the analogue of it and is "the MPI way".
I listed (4) because we didn't decide in the previous meeting whether to
go with (2) or (4).
> We would need to think about whether we have to have the whole
> message ordered or ordered on a per target address basis.
Atomicity and ordering go hand-in-hand; if there's no atomicity,
ordering doesn't make sense. Since we have basic datatype atomicity for
accumulate/get_accumulate, ordering would make sense at that granularity
If someone wants to propose full-message atomicity, then we can consider
ordering at that granularity too. But till then, whole message ordering
is an overkill.
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