CUDA error 700 with this example scene

[1funk]

I'm getting a CUDA 700 error with this sample scene. Any attempt to restart RT doesnt work and requires modo to be restarted.

I got another user to try the file and he got the same error.

1. Load the file and starting RT GPU

The error should pop up after a second or two. If you dont see it, try adjusting something on the material



UPDATE: If you set rounded edge width to 0 on the top material, the error stops happening. So it seems rounded edge width + dirt texture generating the masking, crashes vray gpu

[1funk]

If you set rounded edge width to 0 on the top material, the error stops happening. So it seems rounded edge width + dirt texture generating the masking, crashes vray gpu

[boyan]

Howdy, funk,

Thank you for the feedback. Is there a chance this behavior to be driver issue instead of V-Ray GPU and the reason for asking you about it is that I cannot reproduce locally?

evidence: https://drive.google.com/file/d/1eo0...ew?usp=sharing

Cheers,

[1funk]

Im on driver 388.31, while Volker (the other user testing this) is 399.07. We both get the error

We are both using 1080 Tis

[1funk]

After looking at your video, I see you had all CUDA (c++ too) devices active.

If I do the same thing and enabled my GTX 670 (monitor), 1080 Ti, and C++ CUDA devices, I do not get the CUDA error either.

The CUDA error is only happening if I activate the GPUs (1080 Ti or 670)


Please disable the c++/cpu device and try again.

[boyan]

Hey, funk,

Thanks for the posts. Overall, it seems the problem is "Driver A" input parameter when using it within combination with MASK effect Group or Layer.

I've rebuilt the scene file and using the V-Ray blend material. V-Ray GPU is fine with this setup.



Cheers,

[1funk]

OK good to know you can reproduce the crash. Hopefully the GPU team can fix/work around it.

[1funk]

I decided to run a few tests rendering with vray.exe. I exported to a vrscene, then rendered using the following:

1. modo's vray.exe (3.6)
2. standalone's (3.6 nightly) vray.exe
3. 3dsmax's (vray next) vray.exe. I'm using a trial

Both 3.6 vray.exe's crash with Cuda 700, but vray next is fine. It looks like something changed in Next which "fixed" this. Next might be rendering a bit different though (harder edges?).

[Belmont]

I can confirm that the rounded edge option in the MODO material causes a CUDA error 700. Setting the edge width to 0, seems to work.

[Belmont]

I tried using a V-Ray Material with rounded edges and it rendered a still frame just fine, but when trying to render the animation I got:
[2018/Oct/23|09:45:12] error: ./src/ocl_tracedevice.cpp(1834) : CUDA error 700
[2018/Oct/23|09:45:12] error: ./src/ocl_tracedevice.cpp(2036) : CUDA error 700
after 12 frames.

Set the edge width back to 0 and now the animation seems to render.

[boyan]

Hey Belmont,

I can confirm that the rounded edge option in the MODO material causes a CUDA error 700. Setting the edge width to 0, seems to work.

Thank you for the feedback Can you show me a screen recording or send me a scene file, I think there is something specific into it. Overall I can NOT reproduce the issue with rounded edges/ and an animation with Modo material its self or V-Ray Mtl too.


Cheers,

[Belmont]

Thanks Boyan!
I sent you a link to a test scene by mail.

[1funk]

We were talking about cuda 700 crashes in skype today, so I decided to give this a try in modo nightly 28908.

Nothing has changed. The same cuda crash happens using the steps in my first post.

[GidPDX]

I'm getting the 700 error with scenes that have the rounded edge shader too. It's a bit sporadic in some scenes, but with Funk's demo scene I reliably get a crash.

[1funk]

vladimir.nedev Any chance you can confirm this is fixed in Next for modo?