Hearing no response, I assume this is not a known issue so I submitted https://svn.open-mpi.org/trac/ompi/ticket/4709 Nathan, is this something that you can look at?
Rolf From: devel [mailto:devel-boun...@open-mpi.org] On Behalf Of Rolf vandeVaart Sent: Friday, June 06, 2014 1:55 PM To: de...@open-mpi.org Subject: [OMPI devel] iallgather failures with coll ml On the trunk, I am seeing failures of the ibm tests iallgather and iallgather_in_place. Is this a known issue? $ mpirun --mca btl self,sm,tcp --mca coll ml,basic,libnbc --host drossetti-ivy0,drossetti-ivy0,drossetti-ivy1,drossetti-ivy1 -np 4 iallgather [**ERROR**]: MPI_COMM_WORLD rank 0, file iallgather.c:77: bad answer (0) at index 1 of 4 (should be 1) [**ERROR**]: MPI_COMM_WORLD rank 1, file iallgather.c:77: bad answer (0) at index 1 of 4 (should be 1) Interestingly, there is an MCA param to disable it in coll ml which allows the test to pass. $ mpirun --mca coll_ml_disable_allgather 1 --mca btl self,sm,tcp --mca coll ml,basic,libnbc --host drossetti-ivy0,drossetti-ivy0,drossetti-ivy1,drossetti-ivy1 -np 4 iallgather $ echo $? 0 ________________________________ This email message is for the sole use of the intended recipient(s) and may contain confidential information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. ________________________________
