Installing TensorFlow for Python on Arch Linux (with CUDA 9 and CUDNN 7)

Published: 15 Dec 2018

Installing CUDA 9 requires installation of gcc6. (This first step may take couple of hours.)
```
yaourt -S gcc6
```

Remove any existing installations of CUDA

sudo pacman -R cuda
pacaur -S chromedriver

Download CUDA 9 package from Arch Linux archives

wget https://archive.archlinux.org/packages/c/cuda/cuda-9.0.176-4-x86_64.pkg.tar.xz

Install CUDA 9 from local package (Requires Step 1 to be complete)
```
sudo pacman -U cuda-9.0.176-4-x86_64.pkg.tar.xz
```
Prevent CUDA from upgrading to version 10.
```
sudo vim /etc/pacman.conf
```
Uncomment the IgnorePKG line to add cuda to make the line
```
IgnorePKg = cuda
```

Download and install CUDNN 7.0.4-2

wget https://archive.archlinux.org/packages/c/cudnn/cudnn-7.1.4-1-x86_64.pkg.tar.xz
sudo pacman -U cudnn-7.1.4-1-x86_64.pkg.tar.xz

Install TensorFlow in your virtual environment
```
pip install tensorflow-gpu
```
Rejoice!