Issue

mpirun returns "CMA: unable to get RDMA device list" messages.

[xxxx@xxxx~]$ mpirun -np 4 hello

librdmacm: couldn't read ABI version.
librdmacm: assuming: 4
CMA: unable to get RDMA device list
--------------------------------------------------------------------------
[[19252,1],0]: A high-performance Open MPI point-to-point messaging module
was unable to find any relevant network interfaces:



Module: OpenFabrics (openib)
  Host: xxx.x.xx.xx.xx

Another transport will be used instead, although this may result inlower performance.
--------------------------------------------------------------------------
librdmacm: couldn't read ABI version.
librdmacm: assuming: 4
CMA: unable to get RDMA device list
librdmacm: couldn't read ABI version.
librdmacm: assuming: 4
CMA: unable to get RDMA device list
librdmacm: couldn't read ABI version.
librdmacm: assuming: 4
CMA: unable to get RDMA device list