How do I enable automatically nvidia-uvm?

Question

in order to use darktable with OpenCL everytime before starting darktable I have to issue

sudo modprobe nvidia-uvm
sudo mknod -m 666 /dev/nvidia-uvm c 250 0

What is the right way to enable nvidia-uvm by default?

Regards, Oliver

Answer 1

Proper way to do this is described in CUDA documentation:
https://docs.nvidia.com/cuda/cuda-installation-guide-linux/index.html#runfile-verifications

Script from link above:

#!/bin/bash
/sbin/modprobe nvidia
if [ "$?" -eq 0 ]; then
Count the number of NVIDIA controllers found.
NVDEVS=lspci | grep -i NVIDIA
  N3D=echo "$NVDEVS" | grep "3D controller" | wc -l
  NVGA=echo "$NVDEVS" | grep "VGA compatible controller" | wc -l
N=expr $N3D + $NVGA - 1
  for i in seq 0 $N; do
    mknod -m 666 /dev/nvidia$i c 195 $i
  done
mknod -m 666 /dev/nvidiactl c 195 255
else
  exit 1
fi
/sbin/modprobe nvidia-uvm
if [ "$?" -eq 0 ]; then
Find out the major device number used by the nvidia-uvm driver
D=grep nvidia-uvm /proc/devices | awk '{print $1}'
mknod -m 666 /dev/nvidia-uvm c $D 0
else
  exit 1
fi