POV-Ray : Newsgroups : povray.beta-test : v3.8 Clean up TODOs. f_superellipsoid() / shadow cache. : Re: v3.8 Clean up TODOs. f_superellipsoid() / shadow cache. Server Time
24 Jun 2021 09:24:01 EDT (-0400)
  Re: v3.8 Clean up TODOs. f_superellipsoid() / shadow cache.  
From: jr
Date: 18 Apr 2020 14:15:00
Message: <web.5e9b42f21e176347827e2b3e0@news.povray.org>
hi,

William F Pokorny <ano### [at] anonymousorg> wrote:
> On 4/18/20 12:23 PM, jr wrote:
> > ...
> Thank you. Interesting.
>
> My 4th gen i3 at 22nm relative results a lot like your earlier 32nm
> generation i3 results. My i3 the same generation as your i5, but the
> relative differences are larger. Oh! your i5-4570 looks to be limited to
> one thread per core, so yeah, that looks not too different than my 2
> core results.

yes.  forgot to say, the 'povray.ini's on all machines set 'work_threads'.  one
per core, except the goose which is set to '2', hence override.


> Looks to me, more or less, lines up performance difference with what I
> see too - the SDL coded version is faster... Didn't say it outright, but
> my guess is in the SDL method the pow()s are tossed at the processor
> somewhat slower and so 'fewer/(none?)' are asked to wait for some set
> time period.

would "spacing" with 'nanosleep(2)' help?


regards, jr.


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