Best queue system for myrinet?

I'm reinstalling a 32 node (64 cpu) myrinet cluster.

I'm looking for a batch queue system, but want to avoid the problem
I've had in the past (although this info maybe somewhat dated).

Basically I want to schedule my cluster as 64 cpu's, but if I
tell the queue system I have more then 32 cpu it needs to know
that the first job on a given node gets Myrinet channel 2, and the second 
job on the same node gets Myrinet channel 4.

What is working well for people?

-- 
Bill Broadley
Mathematics
UC Davis