I am getting the following error when I try to run OMPI over my dual port IB adapter:
-------------------------------------------------------------------------- WARNING: There are more than one active ports on host 'vic20', 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 values. Please see this FAQ entry for more details: http://www.open-mpi.org/faq/?category=openfabrics#ofa-default-subnet-gid NOTE: You can turn off this warning by setting the MCA parameter btl_openib_warn_default_gid_prefix to 0. -------------------------------------------------------------------------- I understand why it is doing the above based on the description in the link above, but I cannot seem to find anywhere that will tell me how to change the GID to something else. Thanks, Jon
