while installing the driver for two A5000s with NVLink. I discoverd that there are two different drivers. The normal one and the Datacenter Driver.
Ubuntu 20.04, always fresh install in all methods.
My problem is, i don’t get nvlink to work with the “cuda-drivers-515” install method like in the documentation of the Cuda Toolkit. (sudo dpkg -i cuda-keyring_1.0-1_all.deb) After installation it shows all Links as Inactive in nvlink -s, p2p test shows bad performance.
If i install the driver like a normal RTX. With
add-apt-repository ppa:graphics-drivers/ppa and apt install nvidia-driver-515.
NVLinks works fine and shows 14 GB/s per Link. p2p test works fine.
So, what is the difference between the packages “nvidia-driver” and “cuda-drivers”?
Do i have to install something else withe the cuda-driver to get NVLink to work?
Thanks for the help!