[Mpi3-rma] FW: MPI_Accumulate
richardg at mellanox.com
Tue Oct 2 11:38:46 CDT 2012
From: Richard Graham
Sent: Tuesday, October 02, 2012 12:22 PM
To: MPI 3.0 Remote Memory Access working group (mpi3-rma at lists.mpi-forum.org)
What are the requirements placed on MPI_Accumulate if more than one mpi process tries to update the same location ? Does MPI provide any consistency promises, or is it up to the application to guarantee these ? I see that the get accumulate routines are defined to be atomic, but don't see the same requirement for accumulate.
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