[mpich-discuss] MPI_Win RMA with threads
zhouh at anl.gov
Thu Feb 27 15:31:18 CST 2020
On Feb 27, 2020, at 2:32 PM, Mark Davis via discuss <discuss at mpich.org<mailto:discuss at mpich.org>> wrote:
A follow-up question: it seems that MPICH creates a duplicate MPI_Comm
for each window, as I mentioned above. Is that something that's
enforced by the standard or just an MPICH implementation detail?
That is implementation detail. However operations on different window is meant to be independent — ie can happen concurrently. In the case memory exposed in different windows overlap, the MPI standard state that the results are undefined.
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the discuss