[Beowulf] 10G networking?
hahn at mcmaster.ca
Fri Jan 23 07:09:55 PST 2015
> We have been using 10g CX4 for the past 7yrs for our cluster core
> network and are just going fully into 10gT. But our focus is more on
> bandwidth/HTC instead of HPC, i.e. we do not care so much about latencies.
I'm sorry if I was unclear: I'm interested specifically in whether
recent developments change the basic 10G picture. we have cx4 as well,
and lots of IB, but all our 10g is oldish stuff. I guess I'm kind of
hoping to hear that switch, nic, driver improvements have changed the
picture from years ago, when the best you could do with 10g was ~7 us
> Do you have any particular tests in mind, we can certainly look into it
> and report back on our findings.
min packet ping-pong latency is the standard metric, though packets/sec
rate might be interesting as well.
thanks, mark hahn.
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