WARNING: There are more than one active ports on host 'stallo-2.local', but the
default subnet GID prefix was detected on more than one of these
ports. If these ports are connected to different physical IB
networks, this configuration will fail in Open MPI. This version of
Open MPI requires that every physically separate IB subnet that is
used between connected MPI processes must have different subnet ID
Please see this FAQ entry for more details:
NOTE: You can turn off this warning by setting the MCA parameter
btl_openib_warn_default_gid_prefix to 0.
So, please how can I turn off this warning? I have already tried to follow the steps indicated in the link above but it doesn't work. what is exactly the command I have to use?