The Open MPI team has uncovered a serious bug in Open MPI v1.3.0 and
v1.3.1: when running on OpenFabrics-based networks, silent data
corruption is possible in some cases. There are two workarounds to
avoid the issue -- please see the bug ticket that has been opened
about this issue for further details:
We strongly encourage all users who are using Open MPI v1.3.0 and/or
v1.3.1 on OpenFabrics-based networks to read this ticket and use one
of the workarounds described there.
The Open MPI team is working on a fix; it will be included in the
v1.3.2 release. Updates will be posted to the ticket.