You might want to make sure that the run time is working properly before going
too much further. E.g., try mpirun'ing hostname (i.e., the Linux command -- a
non-MPI program) and make sure that that works.
If that works, then try mpirun'ing the "hello world" example program that comes
in the
Thanks for the clarification Jeff.
I am using Open MPI 4.0.1
Once fully setup, I intend to run my application in conjunction with grid, so
the resources will be allocated by grid. This makes it very difficult to
specify IP address for btl_tcp_if_include.
For the named exclude interfaces, it
https://www.open-mpi.org/faq/?category=tcp#ip-virtual-ip-interfaces is
referring to interfaces like "eth0:0", where the Linux kernel will have the
same index for both "eth0" and "eth0:0". This will cause Open MPI to get
confused (because it identifies Ethernet interfaces by their kernel
