[Beowulf] frequency scaling

[Michael Di Domenico]

What steps are generally taken to remove frequency scaling from a box?
 I'm curious if there's something above and beyond (from the linux
side), more then echo'ing performance into the governors and disabling
cpuspeed/kondemand

i did those and i see the freq locked in /proc/cpuinfo and /sys
entries, but when i run cpufreq-aperf, it looks like the cpu's are
still scaling (presumably voltage scaling).

These are sandy bridge processors and I'm wondering if a trigger in
the bios is only way to remove the scaling.

any thoughts?