I have this problem rendering thousands of blades of grass, I've never found
a solution that really works, though Peter's suggestion sometimes has a
small effect.

Mick
"Peter Popov" <pet### [at] usanet> wrote in message
news:i1lciskkd7l89lm1gfa3ocom0298vrtu35@4ax.com...
> On Sat, 20 May 2000 00:46:43 -0700, "Dave Blandston"
> <gra### [at] earthlinknet> wrote:
>
> >BTW, I should have mentioned that peak memory used is only about 12MB
with
> >the CSG Union version, and my computer has 128MB RAM. There's no disk
> >thrashing going on, but maybe this is a CPU cache issue?
>
> No, not at all. It's related to bounding. Are you using manual
> bounding? Is automatic counding on? Most importantly, is union
> splitting on? How about removing user bounds (if any)? Are vista and
> light buffers on?
>
> What is most probably happening is that for some reason (a bad
> combination of settings) POV is checking each ray against all objects
> in the scene. As a quick test, try these command line options:
>
> +mb0 +ul +uv +ur +su
>
> If this does not work, read the docs :) especially the chapter about
> automatic bounding control and removing user bounds.
>
> HTH
>
>
> Peter Popov ICQ : 15002700
> Personal e-mail : pet### [at] usanet
> TAG      e-mail : pet### [at] tagpovrayorg

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