Hello Ole, I am still struggling with deriving an installation recipe from your comments. I must say that I have no practical experience with Infiniband systems. You seem to be convinced that our system is using OmniPath, which is why you urge me to use psm2, although I have never mentioned the presence of OmniPath, and I even have no idea of the underlying hardware. What makes you assume that OmniPath is present? Is it listed in some of the output files that I have attached? How can I verify the Infiniband fabric?
Thanks Gunnar 2017-02-01 12:09 GMT+01:00 Ole Holm Nielsen <ole.h.niel...@fysik.dtu.dk>: > On 02/01/2017 11:41 AM, Gunnar Sauer wrote: > >> The system OpenMPI version runs fine without a link to psm2. >> > > Well, who knows what the "system OpenMPI version" is. It might be a > generic OpenMPI that runs on top of Verbs, meaning the IP over Infiniband > interface supported also on OmniPath fabrics. However, the performance of > Verbs with OmniPath is said to be not al all optimized. For OpenMPI on > OmniPath, one therefore must use the PSM2 interface. >
