[MPICH] Using non-default ethernet interfaces

[Jeff Squyres]

Greetings.  I'm trying to run MVAPICH2 over ethernet to do some  
performance comparisons, but I'm having a heck of a time trying to  
figure out how to use a non-default TCP interface.

Specifically, eth0 is my "normal" gigE network (the IP address  
associated with the hostname).  But I want to run an MVAPICH2 job  
over ib0 -- my IPoIB interface.

I looked through the user documentation and didn't see anything about  
how to do this -- did I miss it?  Pointers would be greatly appreciated.

Thanks.

-- 
Jeff Squyres
Cisco Systems