POV-Ray : Newsgroups : povray.general : splitting-up large renders : Re: splitting-up large renders Server Time
4 Nov 2024 13:03:53 EST (-0500)
  Re: splitting-up large renders  
From: Jeremy M  Praay
Date: 26 Nov 2003 09:38:06
Message: <3fc4bace@news.povray.org>
"Peter Popov" <pet### [at] vipbg> wrote in message
news:aop8svg88fo6kpqeotvqil7li64dq1boqb@4ax.com...
> On Tue, 25 Nov 2003 17:23:58 -0500, "Jeremy M. Praay"
> <jer### [at] questsoftwarecom> wrote:
...
> >Is there a way around this?
>
> Yes. Have all the machines share the same radiosity data. This is
> accomplished in two passes. In the first pass, for which you should
> use the fastest machine you have, render the whole image (maybe in a
> lower resolution and without antialiasing) and use always_sample on
> and save_file. In the second pass, which you split across different
> machines, use pretrace_start 1.0 pretrace_end 1.0 always_sample off
> and load_file. This will load the same radiosity data on all nodes and
> will minimize the amount of new samples they take, so you should end
> up with properly lineable image slices.
>

Thanks!  I'll try that when I get a chance.

The effect wasn't very noticeable (luckily), since it was a
daylight+radiosity scene, but it was something that I noticed and I was a
bit disheartened, having spent 2 weeks running various pieces of the scene
on 3 different machines.

--
Jeremy


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