[Mpi3-rma] MPI-3 UNIFIED model clarification

Pavan Balaji balaji at mcs.anl.gov
Mon Jul 29 22:44:47 CDT 2013

On 07/29/2013 10:18 PM, Underwood, Keith D wrote:
>And, um, technically, if loads can be hoisted
> across the MPI_Recv, then the MPI_Recv semantics are incorrect and
> you have to have a memory barrier in MPI_Recv.

Why is reordering not permitted for two unrelated memory loads?  AFAIK, 
ARM allows that.

Pavan Balaji

More information about the mpiwg-rma mailing list