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Le 01/12/2023 à 14:57, William F Pokorny a écrit :
> On 11/30/23 09:23, Chris R wrote:
>> So, I looked into limiting the number of worker threads in POV-Ray to
>> make sure
>> there was always some spare capacity to do other things without
>> triggering
>> whatever Windows 11 bug is causing this. My machine has 14 cores and
>> 20 logical
>> processors. Running with the default settings, it would peg all 20
>> logical
>> processors at or near 100% when doing a large render. Doing some
>> experiments I
>> verified that worker threads take up one logical processor (vs
>> cores). I ended
>> up settling on a new default using 12 worker threads instead of the
>> max, which
>> based on performance monitoring tools runs at about 50% overall CPU
>> utilization.
>>
>> The odd thing I've noticed, though, is that my renders are not
>> significantly
>> slower.
>
> I think Jerome, now a long time ago, did some detailed analysis on the
> value of threads overs cores. I cannot immediately find it... I believe
> it showed there is some, but not great value to POV-Ray where threads
> exceed the number of physical cores. I think he showed Something like a
> gain of another 10-15% in performance.
>
Be my guest:
https://wiki.povray.org/content/User:Le_Forgeron/vault/Compilation
See the bottom of the page
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