POV-Ray : Newsgroups : povray.general : Does POV not use Intel's "performance" cores? : Re: Does POV not use Intel's "performance" cores? Server Time
8 Aug 2022 21:25:49 EDT (-0400)
  Re: Does POV not use Intel's "performance" cores?  
From: Thorsten
Date: 28 Jul 2022 03:31:44
Message: <62e23b60$1@news.povray.org>
Hello,

it is the operating system, not the application that decides which cores 
get used by which thread. You may want to check the energy efficiency 
settings of your operating system as they might assign all threads to 
just 8 of the cores for some reason.

Thorsten

On 28.07.2022 09:02, Scott wrote:
> So I just got a new CPU (i9-12900) and it seems POV only uses 8 out of the 24
> threads available, no matter what setting of +wt or menu option for thread
> usage.

> However, it only ever uses 8 logical cores (as seen in task manager), which
> leads me to believe it's using only the efficiency cores? See attached
> screenshot of task manager, and below is the text from the benchmark:

> CPU time used: kernel 0.19 seconds, user 700.03 seconds, total 700.22 seconds.
> Elapsed time 90.20 seconds, CPU vs elapsed time ratio 7.76.
> Render averaged 2906.28 PPS (374.37 PPS CPU time) over 262144 pixels using 24
> thread(s).
> 
> Is this a known issue, or am I missing something?


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