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Hello, I am rendering 1000 scatter objects that are glassy cubes containing rooms and getting the following crash:

"Started logging on 11.04.23 18:00:07

OctaneRender Studio 2021.1.6 (11000600)

VRAM used/free/max:0Kb/12Gb/12Gb Out-of-core used:0Kb RAM used:25.049Gb total:63.914Gb OpenGL free/total:0/0
FumeFx library initialisation error!
--------------------------- EXPORT LOG ---------------------------
Export materials time= 184.367 ms
Collect objects time= 8.854 ms
Mesh creation time = 1351.113 ms.
Api update time: 5.809 ms.
VRAM used/free/max:3.242Gb/1.348Gb/12Gb Out-of-core used:0Kb RAM used:32.217Gb total:63.914Gb OpenGL free/total:0/0
OptiX error for device 0: [ERROR] Error recording wait on outstanding request event ( T = 223, H = 908 ) (CUDA error string: an illegal memory access was encountered, CUDA error code: 700)
Failed to allocate internal launch buffer
OptiX API error for device 0: CUDA error
device 0: path tracing kernel failed
MB:0/0 ST/MOV:0/33 Nodes:114 Tris:10.953m DispTris:0 Hairs:0 Meshes:20k
Textures Grey8/16:0/0 Rgb32/64:6/0"

The error tends to come about when manipulating the camera around the object. I will happily provide more details if the error log does not show an obvious / known issue.

Studio driver 531.41
RTX 3080 Ti
Windows 11

Many thanks!

Hi,
available VRAM seems not correct, do you have other applications running?

And you are definitely having issues with Nvidia/CUDA driver!

Ok, please try to use the following Nvidia tool:
https://developer.nvidia.com/cleanup-tool

Then, after reboot, reinstall the previous Nvidia Studio driver version.
https://www.nvidia.com/download/driverR ... 730/en-us/

To perform a clean installation, please follow these steps:


ciao,
Beppe

Thank you for getting back to me Beppe.

I followed your steps and I am still getting a crash. But it did so at the moment the path tracing had finished and the denoiser wanted to start.

I am trying to limit what I use in the background but need chrome open for work purposes. Spotify is open as well but apart from that it is just background services.

Here is the new log:



VRAM used/free/max:0Kb/12Gb/12Gb Out-of-core used:0Kb RAM used:14.259Gb total:63.914Gb OpenGL free/total:0/0
FumeFx library initialisation error!
--------------------------- EXPORT LOG ---------------------------
Export materials time= 179.227 ms
Collect objects time= 14.583 ms
Mesh creation time = 5173.619 ms.
Api update time: 5.722 ms.
VRAM used/free/max:5.999Gb/0Kb/12Gb Out-of-core used:41Mb RAM used:32.354Gb total:63.914Gb OpenGL free/total:0/0
device 0: disabling RTX acceleration as mesh data cannot be placed into VRAM
--------------------------- EXPORT LOG ---------------------------
Export materials time= 183.138 ms
Collect objects time= 14.707 ms
Mesh creation time = 2994.338 ms.
Api update time: 4.422 ms.
VRAM used/free/max:5.998Gb/0Kb/12Gb Out-of-core used:41Mb RAM used:32.358Gb total:63.914Gb OpenGL free/total:0/0
denoiserThread0 : Not enough free memory to run the denoiser. Required memory 386.71 MB
MB:0/0 ST/MOV:0/505 Nodes:1121 Tris:25.482m DispTris:0 Hairs:0 Meshes:507
Textures Grey8/16:0/0 Rgb32/64:5/1
VRAM used/free/max:5.986Gb/0Kb/12Gb
Free VRAM is too low!
Try to decrease polygon counts and use out-of-core for textures.
Use 'render instances' when it's possible.'

Ok, great, the CUDA error is gone!

Also available VRAM is better now, but still not perfect, in fact, you have finished VRAM, with Out-of-core active, and 0 VRAM memory available, so AI Denoiser cannot be performed, you need at least ~450MB of available VRAM to perform denoiser.

Probably if you close Chrome it should work, try to use Firefox instead.

Another trick is to disable the RTX acceleration in c4doctane Settings/Devices panel, to save some memory, if enabled, geometry takes more VRAM.

ciao,
Beppe