Thursday, July 11, 2013

Disable CPU throttling in Debian (aptosid)

When building ATLAS you cannot have CPU throttling enabled:
"CPU Throttling apparently enabled! It appears you have cpu throttling enabled, which makes timings unreliable and an ATLAS install nonsensical. Aborting. "

Disabling throttling is just a single command (for each cpu):
cpufreq-set -g performance -c  <CPU>

Where CPU denotes the cpu index (0 through 7 in my case). If you do not have cpufreq-set, you can get it from the package cpufrequtils.

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