[Beowulf] frequency scaling

Christopher Samuel samuel at unimelb.edu.au
Mon Sep 21 16:07:01 PDT 2015

On 21/09/15 23:18, Mahmood Sayed wrote:

> Nuke it from the bios. It's the only way to be sure. 

Actually it's not as the kernel intel_idle driver will ignore your BIOS
or UEFI settings and try and save power anyway..

We use:

intel_idle.max_cstate=0 processor.max_cstate=1

as part of our kernel boot options, originally found here some time ago:


Best of luck!
 Christopher Samuel        Senior Systems Administrator
 VLSCI - Victorian Life Sciences Computation Initiative
 Email: samuel at unimelb.edu.au Phone: +61 (0)3 903 55545
 http://www.vlsci.org.au/      http://twitter.com/vlsci

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