We have an installation with both Mellanox and Qlogic IB adaptors (in distinct islands), so I built open-mpi 1.4.3 with openib and psm support.
Now I've just read this in the OFED source, but I can't see any relevant issue in the open-mpi tracker: OpenMPI support --------------- It is recommended to use the OpenMPI v1.5 development branch. Prior versions of OpenMPI have an issue with support PSM network transports mixed with standard Verbs transport (BTL openib). This prevents an OpenMPI installation with network modules available for PSM and Verbs to work correctly on nodes with no QLogic IB hardware. This has been fixed in the latest development branch allowing a single OpenMPI installation to target IB hardware via PSM or Verbs as well as alternate transports seamlessly. Do I definitely need 1.5 (and is 1.5.3 good enough?) to have openib and psm working correctly? Also what are the symptoms of it not working correctly?
