Performance evaluation

[Paul English]

We are running MM5 on a 12 node, 24 processor cluster. It does not seem to 
be running at full capacity and I'd like to figure out where we can get 
the most bang/buck on performance improvements. The network is currently 
only single 10/100, although the motherboards (Tyan S2462 w/ dual onboard 
3c920) have a second 10/100 interface. 

I need to look at:
	How saturated is the network?
	Do I need to double (2nd 10/100) or multiply by 10 (gigabit) the throughput?
	Is the problem latency based?
	

Thanks,
Paul