On Tue, 10 Jul 2007, Jon Bernard wrote:
Two vendors recently bid on a cluster we're buying, and we've got
questions about their power estimates that I though I'd also put to the
list while we wait for the vendors to respond.
Vendor A estimates that at peak load a compute node with two AMD 2216s,
4 GB of 667 DDR2 RAM, a hard drive, and an IB board will draw 265 watts.
Vendor B estimates that such a node will draw 450 watts.
Vendor B also estimates that a similar machine with two Intel 5160s will
draw 550 watts at peak load.
Anybody have any actual measurements?
Not for this specific configuration -- I'd be inclined towards ~300W (we
could have a lottery!) although it will vary depending on whether the
system is loaded/active or idle by as much as 30% of the loaded value,
so they couldn't QUITE both be right but it's close.
Google for a "kill-a-watt". Brand new, shipped, it's about $25 (from
e.g. Amazon). A must have for any serious cluster enthusiast or
manager -- use it to plug the systems in and then look. It's one of the
only ways to be sure.
rgb
Jon
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--
Robert G. Brown http://www.phy.duke.edu/~rgb/
Duke University Dept. of Physics, Box 90305
Durham, N.C. 27708-0305
Phone: 1-919-660-2567 Fax: 919-660-2525 email:[EMAIL PROTECTED]
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