-------------------------------------------------------------------------- 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: acn130 Local adapter: mlx5_0 Local port: 1 -------------------------------------------------------------------------- [acn130:4165407] [[15182,0],0] ORTE_ERROR_LOG: Data unpack would read past end of buffer in file util/show_help.c at line 501 {"realtime":1438.28,"usertime":749.74,"systime":3212.59,"memmax":219404,"memavg":0}