[Beowulf] Gigabit PCI-E NIC
hahn at physics.mcmaster.ca
Sat Sep 9 10:49:16 EDT 2006
> As these computers will already have Broadcom NIC, should the second NIC
> also be Broadcom? From a performance/stability point of view, does it
you need to question your assumption that you need two nics.
why do you think so? when will a node have concurrent heavy file
and MPI traffic? its possible, I suppose, but I don't see that on
> NIC? I believe Intel GB NIC is already in the kernel and is a
> "favorite" amount clusters so I probably could not go wrong with Intel.
there are some intel-o-philes, though I suspect they got that way by
being burned by transient problems with other nics. we certainly have
a large number of BCM57xx's in our systems, and I've never had any
problem specific to them. we've also got some intel-based systems,
and they work fine as well. I don't believe there are measurable
differences in performance or overhead. it would be interesting to
try a really tight comparison (e1000 and tg3 cards, both presumably
1x PCI-e; all my hardware is integrated in either xeon or opteron
systems, and thus not comparable...)
regards, mark hahn.
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