POV-Ray : Newsgroups : povray.advanced-users : Getting the most from CPU : Re: Getting the most from CPU Server Time
10 Nov 2025 10:56:23 EST (-0500)
  Re: Getting the most from CPU  
From: jr
Date: 9 Nov 2025 07:50:00
Message: <web.69108d631a1716b0475fba6a6cde94f1@news.povray.org>
hi,

yesbird wrote:
> Now, after successfully build of 3.8.0-beta2 for my home dated
> Intel(R) Core(TM) i5 CPU 750 @ 2.67GHz, ...
> Now I see in the following, when asking 'povray --help':
> Dynamic optimizations:
> CPU detected: AMD,FMA4
> Noise generator: generic (portable)

strange.  on my "elderly" i5, the help option reports CPU Intel (with
SSE2,AVX,AVX2,FMA3) and noise generator 'avx2fma3-intel'.

fwiw, when the correct CPU is detected, find out which "chipset" ('Haswell' for
this machine), and check if the compiler "knows" that, ie I can use the
'-march=haswell -mtune=haswell' GCC options.  unsure about "performance boost"
:-).


regards, jr.


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