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

Jon Forrest jlforrest at berkeley.edu
Tue Nov 17 10:58:43 PST 2009

Bill Broadley wrote:

> My first suggest sanity test would be to test latency and bandwidth to insure
> you are getting IB numbers.  So 80-100MB/sec and 30-60us for a small packet
> would imply GigE.  6-8 times the bandwidth certainly would imply SDR or
> better.  Latency varies quite a bit among implementation, I'd try to get
> within 30-40% of advertised latency numbers.

For those of us who aren't familiar with IB utilities,
could you give some examples of the commands you'd use
to do this?


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