Charles, I recall using the I_MPI_NETMASK to choose which interface for MPI to use. I guess you are asking the same question for OpenMPI?
On Tue, 1 Sep 2020 at 17:03, Charles Doland via users < users@lists.open-mpi.org> wrote: > Is there a way to limit the IP addresses or network interfaces used for > communication by OpenMPI? I am looking for something similar to the > I_MPI_TCP_NETMASK or I_MPI_NETMASK environment variables for Intel MPI. > > The OpenMPI documentation mentions the btl_tcp_if_include > and btl_tcp_if_exclude MCA options. These do not appear to be present, at > least in OpenMPI v3.1.2. Is there another way to do this? Or are these > options supported in a different version? > > Charles Doland > charles.dol...@ansys.com > (408) 627-6621 [x6621] >
