[Mpi3-rma] MPI-3 UNIFIED model clarification

Pavan Balaji 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.

  -- Pavan

Pavan Balaji

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