How to complete a dpkg cuBLAS Patch Update to CUDA 8 installation in 16.04?

Open the terminal and type:

sudo dpkg -i cuda-repo-ubuntu1604-8-0-local-cublas-performance-update_8.0.61-1_amd64.deb
sudo apt-get update  
sudo apt-get install cuda  

Update the PATH variable to include the CUDA binaries folder. To update it, edit the /etc/environment file.

sudo nano /etc/environment  

After editing the /etc/environment file will look like this.

PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/local/cuda-8.0/bin"

If there are other locations in your PATH don't remove them, leave them in the PATH too.

The instructions for using nano editor are always found at the bottom of every page. The only two nano keyboard shortcuts that you need to know are for WriteOut and Exit. Press the keyboard combination Ctrl+O and after that press Enter to save the file being edited. Press the keyboard combination Ctrl+X to exit nano.

Validate the CUDA installation.

nvcc --version

The results of nvcc --version should show that NVIDIA Cuda is installed.

In certain cases an install will don't work because the package is already installed.

Instead of install, just do an upgrade

sudo apt-get upgrade cuda