You can specify which network interface should be used by Open MPI via
the btl_tcp_if_include MCA parameter (using the interface name, e.g.
eth0,eth1). You can even specify how the messages will be distributed
between the networks (please read the FAQ for more info about this).
To test that
In the past I configured a Linux cluster by bonding two ethernet ports
together on each node (with the master having a third port of outside
communication); however, recent discussions seem to say that if I have
two ethernet cards OpenMPI can handle all the setup itself.
My question is what
