Non-existent shared VRAM on NVIDIA Linux drivers

Graphics / Linux Linux
36

Any NVIDIA devs could comment this please ?

I monitor memory using this :

nvidia-smi --query-gpu=pstate,utilization.gpu,memory.free,memory.used --format=csv -l 5

I observe similar issues in following scenarios :

  • When reaching 0 Free VRAM memory, Kwin (KDE window manager) crash or glitching.
  • Diablo V become slow. I have to switch from High => Low => High settings. I notice Free VRAM come back to 1Gb. Then the game fill it and same issue happens after a while.
  • Cuda application say out of memory for few MB that could not be allocated.

All these facts point on the same reason, the Nvidia driver (mine : 560.28.03) are not able to offload VRAM when it’s getting full as it is done on Windows from my understanding.

If at least, we could have an official explanation on the issue :

  • Does the feature is supported : Yes/No
  • If Yes, is it a configuration issue : Yes / No
  • If Yes, what are the steps to configure it

Thank you

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