-------------------------------------------------------------------------- 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: c016 Local adapter: mlx5_0 Local port: 1 -------------------------------------------------------------------------- -------------------------------------------------------------------------- WARNING: There was an error initializing an OpenFabrics device. Local host: c016 Local device: mlx5_0 -------------------------------------------------------------------------- {"realtime":9.86,"usertime":12.19,"systime":41.91,"memmax":469280,"memavg":0}