-------------------------------------------------------------------------- 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: c012 Local adapter: mlx5_0 Local port: 1 -------------------------------------------------------------------------- -------------------------------------------------------------------------- WARNING: There was an error initializing an OpenFabrics device. Local host: c012 Local device: mlx5_0 -------------------------------------------------------------------------- [c012:379102] *** Process received signal *** [c012:379102] Signal: Segmentation fault (11) [c012:379102] Signal code: Invalid permissions (2) [c012:379102] Failing at address: 0x1231010 [c012:379102] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x43090)[0x7f7745341090] [c012:379102] [ 1] [0x1231010] [c012:379102] *** End of error message *** Segmentation fault (core dumped) Command exited with non-zero status 139 {"realtime":2.86,"usertime":1.36,"systime":8.68,"memmax":120112,"memavg":0}