[Beowulf] Performance issue - CPU Intel 00/02
john.hearns at streamline-computing.com
Wed Jul 20 10:27:47 PDT 2005
On Wed, 2005-07-20 at 08:40 -0700, David Mathog wrote:
> It seems likely that the Tyan board may be doing something
> similar. Try getting into the BIOS on one of these and see what
> it's done to the clock speed. Unfortunately for the Asus boards
> the only way to fix this is in the BIOS using the keyboard. That
> would be rather painful if you had 300 nodes to deal with. You
> might want to see if there is a switch in the Tyan BIOS to disable
> this feature.
I agree with what Dave says.
If you have lots of sick machines, you could try making BIOS
settings using the nvram module
On a good node: modprobe nvram; cat /dev/nvram > biosfile
On a bad one: modprobe nvram; cat biosfile > /dev/nvram
YMMV. The management accept no liability for lost bits.
Seriously, give it a try on one node.
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