nir haber

brians
On Windows, Microsoft/NVidia have implemented a way for Optix GPU memory to "spill over" to main CPU memory.
https://nvidia.custhelp.com/app/answers/detail/a_id/5490/~/system-memory-fallback-for-stable-diffusion [nvidia.custhelp.com]

There is not a lot of documentation or info about this feature, but we have formally asked NVidia to give us more and they're working on it. One thing we know is that it doesn't work if there are two GPUs in the machine.

you can disable the feature by setting the "CUDA system fallback policy" to "Prefer No Sysmem fallback" in the NVidia control panel. Once you have done that then windows and linux should behave the same.

well i just test a large scene with 2 gpu and karma xpu in windows working perfectly , both gpu doesn't failing
but in ubuntu gpu it failed easly again.

soo i'm guessing thats this feature work also with 2 gpu? if not then I have no idea why its happening (and i dont have problem with this situation because its not failing and the rendering is faster but i want to know out of curiosity why its happening).
by the way with this feature even if the driver send data to the CPU memory the rendering in xpu in windows its always faster then in linux when the gpu failing in linux.

Hello

I have tiled uv
But I want to create different Rotation each uv tile in vop , how do I do it?

ubuntu 24.04 will be released soon soo anyone try houdini in ubuntu 24.04?
i'm asking because it crashing all the time