Adrian (a.delete@this.acm.org) on August 16, 2018 11:31 pm wrote:
> Travis (travis.downs.delete@this.gmail.com) on August 15, 2018 12:52 pm wrote:
> >
> > Is anyone aware of any out-of-the box thing to either measure this or read the frequency
> > from MSRs (I forget if these modes are both exposed, I think so though).
> >
>
>
> On Linux it is very easy to measure everything you want to know with turbostat.
>
> This program should be available as a package in whatever distribution you
> use, but it is preferable to use the most recent version, which you can make
> and install yourself from the Linux kernel sources, typically located at:
>
> /usr/src/linux/tools/power/x86/turbostat/
>
>
> Turbostat can show the clock frequencies of each core and all the other relevant information.
>
>
> You should run simultaneously with turbostat some program which completely loads the processor
> on the desired number of cores, e.g. firestarter or some AVX-512 / AVX2 benchmark.
>

Yup, although I was actually asking if turbostar or some other program could measure the nominal/configured AVX frequencies, regardless of what is running (of if nothing is running). It can do so at least for the non-AVX frequencies if you pass --debug (and recent versions show this info without debug also).