[cfarm-users] Temporarily disabling SMT

Segher Boessenkool segher at kernel.crashing.org
Thu Oct 22 17:59:31 CEST 2020


Hi Alexander,

On Thu, Oct 22, 2020 at 05:24:20PM +0200, Alexander Kruppa via cfarm-users wrote:
> would it be possible to allow users to disable SMT (a.k.a. hyperthreading)
> temporarily on one cpu core? This would be useful for doing timing runs
> that are not affected by other processes running on another logical cpu on
> the same physical core.

On the shared systems you cannot run benchmarks *at all*.  On the
dedicated systems the project it is assigned to has root privileges.

You could see if any of our systems has SMT disabled already?


Segher


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