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Ubuntu 20.04

CUDA Toolkit

See CUDA Ubuntu Installation

# Add NVIDIA package repositories
sudo mv /etc/apt/preferences.d/cuda-repository-pin-600
sudo apt-key adv --fetch-keys
sudo add-apt-repository "deb /"

# Add the ML Repo (Optional)
sudo apt install ./nvidia-machine-learning-repo-ubuntu2004_1.0.0-1_amd64.deb
sudo apt update

# Install NVIDIA driver and cuda.
sudo apt install nvidia-driver-510 cuda
# Reboot and check that the drivers are working with nvidia-smi
sudo reboot

# Install cudnn (Optional)
sudo apt install libcudnn8 libcudnn8-dev
  • For machine learning, use Anaconda or Docker's CUDA since different versions of TensorFlow and PyTorch require different CUDA versions.

You may need to add LD_LIBRARY_PATH=/usr/local/cuda/lib64 to your environment variables.
You can also do this in PyCharm.
Pycharm LD LIBRARY PATH config.png Pycharm LD LIBRARY PATH console config.png

GCC Versions

nvcc sometimes only supports older gcc/g++ versions. To make it use those by default, create the following symlinks:

  • sudo ln -s /usr/bin/gcc-6 /usr/local/cuda/bin/gcc
  • sudo ln -s /usr/bin/g++-6 /usr/local/cuda/bin/g++

Alternatively, you can use -ccbin and point to your gcc:

-ccbin /usr/local/cuda/bin/gcc