Threadripper 2990WX Performance Regressions? Not so fast...

Опубликовано 16 сентября 2018, 16:49

Let's talk about the curious case of the 2990WX performance regressions vs the 2950X where the 2990WX performs worse *on windows* than Linux.

I think the issue goes deeper than scheduling -- something else is broken with this many threads.

I've also seen the recent driver bugs in the nvidia driver for performance regressions there -- it's not as useful to look at that because it's cross platform -- but I suspect that (at least on windows, before "windows 10 for workstations" is a thing) 32 cores is more machine than windows can handle.

I was a bit surprised to confirm the performance delta is as much as it is.

ALSO NOTE: I'm not really wanting to be team red/team blue but with this tweak the 2990WX DESTROYS the 7980XE in Indigo now :D
For those of you that keep score.

Left out here for time was 7zip. FWIW 7zip behaved wildly inconsistently even doing the powershell thing. In some bench runs I could get similar performance to Linux in but other times the performance regressed

blogs.technet.microsoft.com/ma...
forum.level1techs.com/t/what-i...
techreport.com/review/33977/am...

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