MtoA 4.0.1 [gpu] stack overflow

[LayLo3D]

I keep trying to render the same scene and a couple times it rendered for various amounts of time, one time even over 30 mins. But, now it keeps saying "Render Aborted. Check output for errors" almost right away, but usually doesn't output any errors. The couple times it did output it was something about "[gpu] stack overflow." I lost the actual error I copied from the Script Editor when the forum made me sign in and I lost my original post.

I'm using Windows 10, Maya 2020, MtoA 4.0.1 and an RTX 2080Ti, NVIDIA driver 441.66.

Any ideas?

Thanks!

[Stephen.Blair]

Sounds scene specific, so we need to know more about that scene, or get it for testing.

For a start, you can increase the Arnold log verbosity, and send the log to a file (Render Settings > Diagnostics).

[LayLo3D]

These forums could use an update where you don't lose your message when you're apparently not logged in and then it logs you in... I keep having to post twice...

Here is the log and render stats:

arnold.txt

arnold_stats.txt

I found out I can force the render to continue by un-checking "Abort on Error."

[Stephen.Blair]

@ Looks like it's a texture loading problem. How did the render look?

[LayLo3D]

@

I haven't noticed any missing textures or artifacts. I know the one Cutout.png doesn't get converted by MakeTx, is that what you're referring to? I get the same errors minus that MakeTx error if I remove that texture or use an older tx file that was converted by MakeTx prior to the Arnold 6 release. Do GPU and CPU convert the texture differently, because I never used to get that conversion error prior to Arnold 6.

The other error I see is the

layeredTexture: could not set BOOL parameter "enable0"

I've always gotten that even with CPU rendering, but I thought it was just an old legacy fallback thing.

Are Maya layeredTexture nodes not supported by Arnold?

[LayLo3D]

Hi, thanks for your reply, but I'm wondering if I'm going to get any help with figuring this out? What's the problem with the textures? How do I fix it? Did you see my other questions? I didn't have any errors when rendering with Arnold 5 CPU.

[Stephen.Blair]

Nobody is working during the holiday break.

The errors appear to happen during texture loading, that's why I say that it looks texture related eg related to how we are streaming textures

The question is how do we reproduce this?