[Mpi3-rma] MPI-3 UNIFIED model clarification
balaji at mcs.anl.gov
Fri Aug 2 20:29:56 CDT 2013
On 08/02/2013 08:27 PM, Underwood, Keith D wrote:
> That was specifically *not* the point of unified. The point of
> unified was that "if the platform can support it, the user can get
> something better". Remember all those conversations about
> synchronization using hands waving across the machine room? Unless
> you guys want to go get rid of UNIFIED? There really isn't a point
> to unified if you have to call MPI_Win_sync, is there?
Yes, I remember that discussion. However, what I took away from that
discussion was that the user *could* do something outside of MPI, not
*must*, to ensure correct behavior.
If that was not the intention, then there needs to be a memory model
where that's the case.
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