27 Feb
2020
27 Feb
'20
3:31 p.m.
On Feb 27, 2020, at 2:32 PM, Mark Davis via discuss <[email protected]<mailto:[email protected]>> 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. — Hui Zhou