Gilles, all,
I can confirm that the fix has landed in OpenMPI 2.1.1. Unfortunately,
1.10.7 still provides 4-Byte-aligned memory. Will this be fixed in the
1.x branch at some point? We are selectively enabling the use of shared
memory windows when using OpenMPI so it would be interesting to kno
Gilles,
Thanks for the quick reply and the immediate fix. I can confirm that
allocations from both MPI_Win_allocate_shared and MPI_Win_allocate are
now consistently aligned at 8-byte boundaries and the application runs
fine now.
For the records, allocations from malloc and MPI_Mem_alloc are
Joseph,
thanks for the report and the test program.
the memory allocated by MPI_Win_allocate_shared() is indeed aligned on
(4*communicator_size).
i could not reproduce such a thing with MPI_Win_allocate(), but will
investigate it.
i fixed MPI_Win_allocate_shared() in
https://github.com
