Render error - CUDA error 715 on device

[imago10]

Hello! On every scene when I render at about 30-60 min my render stopped and I have info in log:
CUDA error 715 on device 2: Error code unknown.
-> kernel execution failed (pmc)
device 2: PMC failed
<<< Render Failure >>>
CUDA error 715 on device 2: Error code unknown.
-> failed to deallocate device memory

What this means? How can I solve this? I use latest version of Octane Render for C4D.

Regards,
Lukas

[face_off]

Sounds like the GPU overheated. Use GPU-Z to track your GPU temperatures.

Paul

[imago10]

I use watercooling system. Max temp hit by GPU is 55°C

[aoktar]

Have you checked free VRAM and total triangle counts in LV and PV's info lines?

[imago10]

I will check, but where is and what is LV and PV's info lines?

[aoktar]

As in image. Also Picture Viewer display a line at bottom for similar info. You can check manual or tutorials for extra information about LV.
Also please update your version to 2.41.1 R3(Stable) or 2.42.2 TEST version.

[imago10]

From picture viewer:

From Live Viewer Window:


I use 2xGTX780Ti and one GTX690 (so in octane gpu0: 780ti, gpu1: 780ti, gpu2: 690, gup3: 690).

[aoktar]

Is it single frame render with 34K maxsamples on PMC? I think you have displaced geometry? Displacement and pmc can cause a crash on cuda.
Hard to know without trying it. I can take a look and send to Octane devs If you could think to send me a standalone scene.

[imago10]

Yes I use displaced geometry. 34K maxsamples because I turn on time limit. I update to new stable version as you write 2.41.1 R3(Stable) and create scene without any displacement. And I still have error:
CUDA error 700 on device 2: Error code unknown.
-> kernel execution failed (pmc)
device 2: PMC failed
<<< Render Failure >>>
CUDA error 700 on device 2: Error code unknown.
-> failed to deallocate device memory
CUDA error 700 on device 2: Error code unknown.
-> could not get memory info


What more can I do?

[imago10]

When I use 2xGTX780Ti and one GTX690 (so in octane gpu0: 780ti, gpu1: 780ti, gpu2: 690, gup3: 690). Does that means gpu2: 690 is give me error?