Disable vGPU ECC Memory

[arsaenl]

Has anyone been able to disable ECC memory on a Tesla GPU being passed through to a VM? Running a P4 which may only be able to use the full 8GB of memory if ECC is disabled, and I cannot figure out how to configure Nvidia-SMI in proxmox. Thanks!

 

[noel.]

HI,

I sadly don't have the hardware to test this, so this might not work.
Set up a vm and pass through the gpu. In that vm, install the nvidia drivers. Now nvidia-smi -q should be available, with which you can check if you are in ECC mode. If you are, you should be able to turn it off with nvidia-smi -e 0. [1]

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[1]: https://docs.nvidia.com/grid/latest...uide/index.html#disabling-enabling-ecc-memory

 

[arsaenl]

Thanks for the response! My gut is that that will allow the GPU to use the fully allocated memory buffer for THAT specific VM (6GB in my case) but still leave the full 8GB unreachable. In either case, I’ll give it a whirl and report back.

 

[neiion]

Hi
just wondering did you manage to disable the ECC memory? i have a P4 on order currently and was hoping to do the same when i get it installed.

 

[arsaenl]

Hi
just wondering did you manage to disable the ECC memory? i have a P4 on order currently and was hoping to do the same when i get it installed.

Haven’t put a ton of time into it but wasn’t able to yet unfortunately

 

[neiion]

Thanks, if i get mine working with ECC disabled i will post my how to here.

 

[neiion]

Just wanted to follow up and confirm that the instructions mentioned above by Noel worked for me on the tesla p4.

nvidia-smi -e 0

i have the full ram available now. (8192MB)