[Mpi3-rma] [EXTERNAL] Re: MPI-3 UNIFIED model clarification
jedbrown at mcs.anl.gov
Sun Aug 4 18:31:30 CDT 2013
Pavan Balaji <balaji at mcs.anl.gov> writes:
> This is not an ordering issue if I'm talking about nonoverlapping
> memory. If P0 is doing PUTs to P1s memory, and P1 is reading some other
> nonoverlapping region of it's own memory, P0 and P1 need to synchronize
> in some way if they use the SEPARATE model (e.g., by using EXCLUSIVE
> locks). If they used the UNIFIED model, they can do these accesses
> concurrently without any synchronization.
At some point, P1 (or other ranks) must learn that it can now access the
memory that P0 was PUTing into. How would you do that?
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Size: 835 bytes
Desc: not available
More information about the mpiwg-rma