[Beowulf] One network, or two?
jlb17 at duke.edu
Tue Sep 23 16:46:06 EDT 2008
On Tue, 23 Sep 2008 at 1:20pm, Greg Lindahl wrote
> On Tue, Sep 23, 2008 at 03:21:55PM -0400, Joshua Baker-LePain wrote:
>> In theory, it's a great idea. In practice, wiring up an entire 2nd
>> network gets to be a major PITA (as well as being uncheap) as your
>> cluster size increases. I've got ~350 nodes here, and a 2nd set of
>> cabling is really, really low on the list of projects I'd like to tackle.
> I can name a bunch of 350 node clusters that have multiple networks.
> So, obviously, YMMV.
Those are probably at schools which actually *have* undergrads. *sigh* I
In all seriousness, if management and/or file traffic were slowing down
*work*, then I'd absolutely go for a 2nd network. But ours is a mixed use
cluster running primarily EP serial jobs. As you said, mileage varies.
QB3 Shared Cluster Sysadmin
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