[Beowulf] power usage, Intel 5160 vs. AMD 2216

[Li, Bo]

Try cpufreqd to manage power and be sure to set ondemand mode for balance.
AMD box may consume less while the Intel north bridge can eat about 11-25W per chip.
Memory will eat more than we expected when the load is light. I can't find some daemon to mange power consumed by RAM.
Now, there are some transaction based approaches to run a cluster on demand, but I am afraid before fast wake up is ready, nothing can be practical.
Regards,
Li, Bo

----- Original Message ----- 
From: "Jon Bernard" <jonbernard at fmailbox.com>
To: <beowulf at beowulf.org>
Sent: Wednesday, July 11, 2007 6:22 AM
Subject: [Beowulf] power usage, Intel 5160 vs. AMD 2216


> 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?
> 
> Jon
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