Per core frequency change on multicore

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enemra

Commendable
Aug 15, 2016
1
0
1,510
Hello,

I want to apply DVFS to each core on a multiprocessor system and measure the energy consumed by the processor (or microcontroller). Does anyone know a multicore platform where per core frequency change is possible.

Regards
 
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M
AMD Family 15h processors (FX series) support per-core frequency change and have an embedded power sensor. I don't know accurate it is but it might be worth looking into. If you're running Windows, there's probably a utility from AMD that can read the power sensor and adjust the core frequencies; on Linux, it's easily readable via the hwmon subsystem using the fam15h_power driver (and, of course, you can use the userspace cpufreq governor to control the speed of the cores either manually or with a script).
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molletts

Distinguished
Jun 16, 2009
475
4
19,165
AMD Family 15h processors (FX series) support per-core frequency change and have an embedded power sensor. I don't know accurate it is but it might be worth looking into. If you're running Windows, there's probably a utility from AMD that can read the power sensor and adjust the core frequencies; on Linux, it's easily readable via the hwmon subsystem using the fam15h_power driver (and, of course, you can use the userspace cpufreq governor to control the speed of the cores either manually or with a script).
 
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