Need ball park power and cooling requirements
bransom at ucdavis.edu
Tue Oct 1 10:09:52 PDT 2002
At 04:01 PM 9/30/02 -0600, Dean Johnson wrote:
>On Mon, 2002-09-30 at 15:17, Timothy H. Keitt wrote:
> > I'm setting up lab space and plan to build a small (8-16 node) cluster
> > of dual Xeon nodes (Dell 2650 or equivalent). I need to give the
> > engineers the power and cooling needed in the 6'x8' server room that
> > will house the cluster. Any rules-of-thumb for what's required? Thanks.
>A good ballpark, with decent margins, would be 300w per box. You need to
>add things like monitors and switches too.
I'd add a little more margin. I'm using dual athlons, which may be more
power thirsty than Xeons -- dunno. Nonetheless, planning on just the power
supply rating per box could be limiting. Our cluster sometimes goes over
calculated amp (and power) ratings when all cpus are crunching 100%. We
have Baytech power strips rated at 20 amps which should have handled 7 dual
athlon boxes apiece, if going by the spec numbers. We had to add another
power strip and spread out to only 5 boxes each. Fortunately, I had enf 20
amp circuits in the room (4 for a 20 node cluster + eth switch + head node).
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