[Beowulf] How Would You Test Infiniband in New Cluster?

Jon Forrest jlforrest at berkeley.edu
Tue Nov 17 20:01:12 EST 2009

I had said "I believe these are with IB."
Now I'm not so sure. I just did a

	"ifconfig ib0"

on all the nodes and they all say

           BROADCAST MULTICAST  MTU:65520  Metric:1
           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:256
           RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

So, it doesn't look like any of these tests used IB,
although I'm not sure because some of those numbers
looked better than I'd expect for just 1Gb ethernet.

I'll have to figure out how to force IB when
using OpenMPI.

Jon Forrest
Research Computing Support
College of Chemistry
173 Tan Hall
University of California Berkeley
Berkeley, CA
jlforrest at berkeley.edu

Beowulf mailing list, Beowulf at beowulf.org sponsored by Penguin Computing
To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf

More information about the Beowulf mailing list