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>> I'd prefer the kernel to do such clustering...
> 
> I think that is a next step.
> 
> Also, while the kernel can do this at a best effort basis, it cannot
> take into account things the kernel doesn't know about, like high
> priority job peak load etc.., things a job scheduler would know.
> 
> Then again, a job scheduler would likely already know about the AVX
> state anyway.

the job scheduler can guess.
unless it can also *measure* it won't know for sure...

so even in that scenario having a decent way to report actuals is useful


>