Tensorflow
Tensorflow
There several possible ways to install tensorflow.
Nix-native packages (strongly recommended)
Use python3Packages.tensorflow or python3Packages.tensorflowWithCuda.
Cache: Using the cuda-maintainers cache is recommended! It will save you valuable time and electrons. Getting set up should be as simple as cachix use cuda-maintainers. See the CUDA wiki page for more info.
pip install in a nix-shell
Nixpkgs provides multiple versions, however, it is often desirable to be able to install the latest nightly from pip. This can accomplished in the following ways:
- By making a nix-shell
with import <nixpkgs> {};
mkShell {
name = "tensorflow-cuda-shell";
buildInputs = with python3.pkgs; [
pip
numpy
setuptools
];
shellHook = ''
export LD_LIBRARY_PATH=${pkgs.stdenv.cc.cc.lib}/lib:${pkgs.cudatoolkit_10_1}/lib:${pkgs.cudnn_cudatoolkit_10_1}/lib:${pkgs.cudatoolkit_10_1.lib}/lib:$LD_LIBRARY_PATH
alias pip="PIP_PREFIX='$(pwd)/_build/pip_packages' TMPDIR='$HOME' \pip"
export PYTHONPATH="$(pwd)/_build/pip_packages/lib/python3.7/site-packages:$PYTHONPATH"
export PATH="$(pwd)/_build/pip_packages/bin:$PATH"
unset SOURCE_DATE_EPOCH
'';
}
Within this shell, pip install tf-nightly should work and provide GPU support. The cuda toolkit version (and the version of Python) can be changed to correspond with the matching tensorflow version.
Note: On NixOS 20.03 and above LD_LIBRARY_PATH no longer contains /run/opengl-driver/lib:/run/opengl-driver-32/lib by default, preventing tensorflow from discovering the Cuda libraries. This can be solved by manually (or using nixGL[1] ) appending your LD_LIBRARY_PATH in the shellHook, or by reverting to the pre-20.03 behavior by setting setLdLibraryPath to true in your hardware opengl configuration under configuration.nix.
hardware.opengl.setLdLibraryPath = true;