POV-Ray : Newsgroups : povray.beta-test : Photons extremly slow under beta 7 icl : Re: Photons extremly slow under beta 7 icl Server Time
30 Jul 2024 14:23:46 EDT (-0400)
  Re: Photons extremly slow under beta 7 icl  
From: Nathan Kopp
Date: 30 Oct 2001 19:17:34
Message: <3bdf431e@news.povray.org>
"Marc-Hendrik Bremer" <Mar### [at] t-onlinede> wrote...
> Hi!
>
> There seems to be something wrong with the Intel compile. The scene I'm
> working on took about 6 minutes to compute photons (count 200000) under
beta
> 6. With beta 7 it took over 20 minutes until the status bar showed
something
> like "this=500 total= 10454 ..." (values might vary a bit). The msvc
version
> seems to be a bit faster, but it's running at the moment, so I don't know
> yet for sure. It displays "this=400, total 6189" after 7 minutes.
>
> Can someone else verify this? Please don't say I have to wait a month (or
> even more) to use photons again!

Does your scene contain isosurfaces?  How does render time compare with
photons disabled?  (Photons are simply rays traced into the scene from the
light sources, so the problem may be caused by slower ray-intersection
tests.)

-Nathan


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