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Hello,

I just updated to Cinema 4D 2023.2, so not sure if this is the issue or not.

Cinema - 2023.2
Octane - 2022.1-R6

I have been using the same scene with success and without issues for the past month, and have never ran into this issue. Everything looks fine in the picture viewer, but it fails to save the file and C4D crashes. In the picture viewer, when the crash happens there is the following copy is in the bottom. Displaying Denoised reflection indirect pass 1/2.

I have copied the whole scene to a new file, and did not have success with that either.

Attached is a screen grab of the console and Octane Log, Octane crash report, simplified scene with the same crash on the denoising.

1 other note, I can confirm that the file saves fine with Denoised passes off. I can also confirm that the scene doesn't matter, a scene with a simple sphere and a a simple glossy material produced the same crash.

Okay, after some more tests... here is what I have found. It is isolated to Denoising, when rendering the file to picture viewer. This crash only happens in 2023.2.

2023.2
All GPUs - Crash
Single GPU - Works on all 4
Any combination of GPUS (1&2, 1&3, 1&4, ect.) - Crash

2023.1
All GPUs - Works

R26
All GPUs - Works

R21.207
All GPUs - Works

Hi,
from the log, both c4doctane Win 10 and Nvidia driver are not updated.

Now we are at 2022.1-R10.

You also have a mix of Quadro and GeForce GPUs

Are you using Quadro or GeForce drivers?

ciao,
Beppe

Hi Beppe,

Thanks for responding. I have stayed on older drivers because:
1. They have been working without issue.
2. I do not have the issues while running Adobe software that have been reported.
3. The requirements are "NVIDIA Studio driver with version at least 456.38 on Windows" which I have.

The 1080s are running Geforce drivers, and the A5000's are running Quadro drivers. Again, working fine without issues.

So to be crystal clear, I currently have Cinema 4D R21, R26, R2023.1, and R2023.2 on my machine. With C4D 2023.2 - Octane crashes during the file saving process when using denoising with more than 1 GPU activated (Quadro or Geforce - doesn't matter).

And you are suggesting that it is a GPU mixmatch, GPU driver or windows driver error instead of a just released software update (Cinema 4D) running a plugin that was not specifically updated along with it?

I will install 2022.1-R10 on the C4D 2023.2 and see if that fixes it.

Thanks,
Tim

I can confirm that using The latest version of Octane does not correct the issue.

Okay, after doing a lot of testing... This appears to only happen when "Show Passes" is enabled. With this unchecked, it renders fine but it doesn't save the denoised beauty pass apparently (It does save the other denoised passes). Please see attached video. After I try canceling the render. C4D locks up and is unusable, and I have to end task in the Windows Task Manager.

I saw Ahmet uploaded Cinema4D version 2022.1.1. I tried this version and the issue was still there.

Please let me know if I can be of further assistance troubleshooting this issue. As of now, I am back on C4D 2023.1.

Thanks,
Tim

Also crashing here. The image renders in picture viewer, denoise runs then crashes. Often when this happens it is accompanied by the system graphics locking up for 10 seconds (cant move the mouse) and then 2500x

"CUDA error (702) on device 0: the launch timed out and was terminated
-> failed to deallocate device memory"

Rendering to render queue works fine

geforce 3090
driver 531.41 studio
c4d r26.107
octane 2022.1.1 R2

Will update to R3 shortly but dont see any denoiser fixes in release notes

If anyone still has this issue I found that you also must disable Multilayer file, then you get out the denoised beauty.