For 8-core WNs recently set up at RHUL, we have 2x 1Gb/s eth0 bonded.
I wanted to ensure no chance of a bottleneck and I probably
over-specified it.
Ganglia shows even for the most loaded WN barely any network use, just a
few bursts of order 20Mb/s. I don't know if the current jobs are
typical: they are mostly cms and biomed plus a bit of hone.
Cheers,
Simon
Winnie Lacesso wrote:
> Question for those of you with 8-core WN, where something like
> gpfs is *not* in the equation - do you have these on a 1Gbps
> network or a 100Mbps network?
>
> Because one wonders, if WN are on a 100Mbps network could there be
> contention between several high-I/O jobs on that WN for that single
> 100Mbps eth0 NIC?
>
> Anyone seen this?
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