Re: More MR Memory Issues

["Tim Leydecker" <BauerOink(at)gmx.de>]

I often had luck with simply enabling "dynamic BSP"
and also enabling the Memory limit (mental ray).

A rule of thumb for setting a reasonable value for
that general memory limit (not the BSP´s one)
is that a 32bit windows process will start to
choke with anything set above 1536, even
thought the /3GB switch may have been set
within the OS (depending on the w2k/XP flavour).

For scenes in the 512-1024 MB range, this often
proved enough, if not, rendering on a 64bit machine
with some more RAM felt legit and more artist friendly
than having to waste ~ hours of re-starting, then trying
to squeeze mR into a non-fractioned block of Memory.

Cheers

tim






----- Original Message ----- 
From: "Alan Jones" <skyphyr(at)gmail.com>
To: <XSI(at)Softimage.COM>
Sent: Friday, November 02, 2007 4:46 PM
Subject: Re: More MR Memory Issues


> Hi Brad,
>
> If you're not using anything that has raytracing (reflection,
> refraction, dirtmap/AO) then you can switch to the rasterizer.
>
> It doesn't use a BSP for storing the geometry at rendertime so it may
> sidestep the issue for you. Environment reflection is ok as it doesn't
> involve raytracing.
>
> Cheers,
>
> Alan.
>
> On Nov 2, 2007 3:36 PM, Bradley Gabe <withanar(at)gmail.com> wrote:
> > Looks like I'm the latest victim to get hit with this error:
> >
> >       Error: MEM 0.5 fatal 031008: can't allocate 524000 bytes
> >
> >
> > It's in a simple crowd scene with 20,000 particle instances, and each
> > instance has about 2000 polys, so we're well within MR and XSI's realm of
> > possibility.
> >
> > I've been messing around with BSP tree settings all morning, reduced my 
> > tile
> > size, and a handful of other standard memory reduction techniques (short 
> > of
> > polygon reduction), all to no avail.
> >
> > I'm starting to think there may be a windows memory setting or something
> > else that everyone knows about in XSI, and I missed over the past couple 
> > of
> > versions due to my main focus in animation over rendering. :-)
> >
> > Any more tips from anyone would be appreciated while I continue to hunt
> > through the email archives.
> >
> >
> > -Brad
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