mpirun returns "CMA: unable to get RDMA device list" warning
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
Environment
Red Hat HPC Solution
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.