-------------------------------------------------------------------------- By default, for Open MPI 4.0 and later, infiniband ports on a device are not used by default. The intent is to use UCX for these devices. You can override this policy by setting the btl_openib_allow_ib MCA parameter to true. Local host: pd-compute-3-34 Local adapter: qib0 Local port: 1 -------------------------------------------------------------------------- -------------------------------------------------------------------------- WARNING: There was an error initializing an OpenFabrics device. Local host: pd-compute-3-34 Local device: qib0 -------------------------------------------------------------------------- [pd-compute-3-34.local:22867] [[25192,0],0] ORTE_ERROR_LOG: Data unpack would read past end of buffer in file util/show_help.c at line 501 -------------------------------------------------------------------------- WARNING: There was an error initializing an OpenFabrics device. Local host: pd-compute-3-34 Local device: qib0 -------------------------------------------------------------------------- {"realtime":1.83,"usertime":0.35,"systime":0.84,"memmax":27228,"memavg":0}