[Sidefx-houdini-list] Practical RAT size limits

Frederic Servant frederic.servant at gmail.com
Thu Aug 20 09:46:00 EDT 2009


Yep, I'm running Linux 64 bit, and memory does not seem to be the issue --
I'm not swapping and houdini crashes very quickly.
--
Frederic Servant
R&D Engineer
La Maison
www.alamaison.fr

On Sun, Aug 9, 2020 at 9:19 AM, <jc at axyzfx.com> wrote:

> I assume you're running 64 bit? I would guess the issue is more about the
> application and memory allocation as opposed to an inherent limitation in
> the format. At the very least, you can test that by using another format,
> and additionally try getting another app on the same platform to manipulate
> maps of that size.  Remember that rat is mip-mapped, there are multiple
> versions of your image being stuffed in there by default.
> Cheers,
> JC
>
> Sent from my Android phone using TouchDown (www.nitrodesk.com)
>
> -----Or
> iginal Message-----
> From: Frederic Servant[frederic.servant at gmail.com]
> Received: 09-08-20 6:42 AM
> To: sidefx-houdini-list at sidefx.com[sidefx-houdini-list at sidefx.com]
> Subject: [Sidefx-houdini-list] Practical RAT size limits
>
> Hi list,
>
> I'm trying to assemble  huge RAT maps (80000 x 40000) but it seems I hit a
> wall if any dimension exceeds ~32000 pixels (2^15?).
>
> Does anyone have more insight of the limitations of the RAT file format and
> / or COP processing generally in houdini, dimension-wise?
> --
> Frederic Servant
> R&D Engineer
> La Maison
> www.alamaison.fr
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