On Wed, 2005-04-06 at 10:58, Hal Rosenstock wrote: > Mellanox mst ? Are you using the Mellanox drivers and not OpenIB gen2 ? If you are, that combination doesn't work. You either need to use OpenIB gen2 (mthca) or use the OpenSM from Mellanox Gold of whatever variant you are using. -- Hal