On 23 May 9:37PM, Jonathan Dursi wrote:
On the other hand, it works everywhere if I pad the rcounts array with an extra valid value (0 or 1, or for that matter 783), or replace the allgatherv with an allgather.
.. and it fails with 7 even where it worked (but succeeds with 8) if I pad rcounts with an extra invalid value which should never be read.
Should the recvcounts[] parameters test in allgatherv.c loop up to size=ompi_comm_remote_size(comm), as is done in alltoallv.c, rather than ompi_comm_size(comm) ? That seems to avoid the problem.
- Jonathan -- Jonathan Dursi | SciNet, Compute/Calcul Canada | www.SciNetHPC.ca
