Some involved in the discussion have stated only 5 - 10 kW per full rack,
always nice when people clearly declare themselves to be useless.
which is too small. Since I don't know exactly what systems I'm going to get from my RFP, I can't do exact calculations based on specific models. I could
RFP is a fatally flawed process, though vendors seem to like it, and it's formal enough to make paper-pushers think it's sensible. OTOH, you can be pretty specific in your RFP: for instance, you should be able to specify max total power, max power-per-node, etc. don't forget PSU efficiency: a system drawing 300W from a 94% "eighty-plus-platinum" is 319 at the plug, but a crappy old 70% PSU will be nearly 430W! higher-end PSUs also have flatter efficiency curves in the middle, though unfortunately, they usually peak at 50% (and from examples here: http://www.plugloadsolutions.com/80PlusPowerSupplies.aspx it looks like certification only requires testing at 10/20/50/100% load) regards, mark hahn. _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
