[OMPI users] How openmpi processes communicate on a single blade

Hi, maybe naive question. How do openmpi processses communicate on a single blade ? Through the network card or sort of shared memory ? Thanks, Luigi This message and its contents including attachments are intended solely for the original recipient. If you a

[OMPI users] MPI SGE and IB don't work together

Hi, we are facing problems with openmpi under sge on a cluster equipped with QLogic IB HCAs. Working off sge, openmpi works perfectly, we can dispatch the job as we want, no warning/error messages at all. If we do the same under sge, even the hello-world program crashes. The main issue is PS