[Beowulf] Rack power requirement question
wrankin at ee.duke.edu
Fri Apr 15 13:15:59 PDT 2005
>>so I thought it best to collect several
>>opinions and then present an answer based on those values. If you
>>have a moment please fill in your best guess for power
>>consumption values, in 2008, in kilowatts for:
> The only reasonably easy one, to me at least, is #3. :) I'd say 10kW,
> assuming around 40 nodes at 250W apiece. If you don't like 250W/node
> increase accordingly e.g. to 12kW.
For a fully loaded 42U rack (40 Dell 1750 Dual 3.2 GHz Xeons, 2 GigE
switches) we are seeing around 350W/node fully loaded. That's
14kW+/rack for power and 4 tons HVAC.
Haven't done the measurements on a EM64T or Opteron 250 yet.
Blades will get you denser, but as been already discussed, getting that
much cold air into the front apiture of a rack is a special sort of pain.
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