[Beowulf] using two separate networks for different data streams

[SIM DOG]

G'day Ricardo

Are you using MPI (1.2x)? If so, check out my Tips page:
http://members.iinet.net.au/~steve_heaton/lss/login_fr.html

Under Multiple NICs.

In short you give each secondary interface its own hostname then modify 
the mpirun.args. Of course, your machines list also reflects this :)

Cheers
Steve