dos33fsprogs/asoft_presenter/presenter_demo/slide_16_rapl_papi

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2012-05-11 03:59:02 +00:00
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%c%RAPL PAPI Interface
* Access to RAPL data requires reading
a CPU MSR register.
This requires OS support
* Linux currently has no driver and
likely won't for the near future
* Linux does support an 'MSR' driver.
Given proper read permissions, MSRs
can be accessed via /dev/cpu/*/msr
* PAPI uses the 'MSR' driver to gather
RAPL values