POV-Ray : Newsgroups : povray.binaries.images : The Cabal : Re: The Cabal Server Time
5 Nov 2024 20:20:37 EST (-0500)
  Re: The Cabal  
From: Eero Ahonen
Date: 2 Jan 2009 14:42:12
Message: <495e6e14@news.povray.org>
clipka wrote:
> 
> Optimization for the official 3.7 beta 29 binary is probably -O3, and it comes
> optimized for 64 bit as well.
> 
> "ten times faster" sounds a bit unlikely to me however. How much time are we
> talking about?
> 

I don't remember the times, but the difference was incredible. I guess
Arttu has them written down and will provide them, but I'll add
something: Eva sails away was also rendered (at least partly) on A64 X2
4450e (2,3GHz) with enough memory and C/CXXFLAGS "-march=athlon64 -O1
-pipe" with 3.6 and it took multiple times against the mentioned A64
3500+/3.7.

I also have one possible explanation: IIRC the image uses radiosity and
AFAIK the radiosity implementations differ between 3.6 and 3.7, being
able to create huge differences between render times. Feel free to
correct me if I'm wrong.

-Aero


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