First, OMPI does -not- require you to use ipoib.
With that command line, both procs will be running on remotehostip. I don't
believe openib has a loopback interface, so you'll need the shared memory btl
so procs co-located on a node can talk to each other. In other words, you need
-mca btl sm,o
HI,
We have multi node set up and they are back to back connected.we are trying
to run open MPI without using ipoib means not using normal ethernet
interface instead it has to go through our uverbs interface.
This is the command i tried ...
"mpirun --prefix /usr/local/ -np 2 --mca btl openib,self
