Install cuda and cuDNN on ubuntu 18.04

This contains step by step instructions to install cuda v9.0 (or 9.2) and cudnn 7.3 in ubuntu 18.04

Steps

verify the system has a cuda-capable gpu
download and install the nvidia cuda toolkit and cudnn
setup environmental variables
verify the installation

Verify your gpu is cuda enable check

lspci | grep -i nvidia

Update the PPA repository driver

sudo add-apt-repository ppa:graphics-drivers/ppa

Install nvidia driver

sudo apt install nvidia-410

Note: once you add the PPA, the latest driver should already be listed by default

Install other import packages

sudo apt-get install g++ freeglut3-dev build-essential libx11-dev libxmu-dev libxi-dev libglu1-mesa libglu1-mesa-dev

CUDA 9 requires gcc 6

gcc 7 compiler is installed by default in 18.02.

To verify the version of gcc install enter

gcc --version

To install gcc version 6

sudo apt install gcc-6
sudo apt install g++-6

Download one of the “runfile (local)” installation packages from cuda toolkit archive

https://developer.nvidia.com/cuda-toolkit-archive

cuda 9.2 https://developer.nvidia.com/cuda-92-download-archive

cuda 9.0 https://developer.nvidia.com/cuda-90-download-archive

Make the download file executable

chmod +x cuda_9.0.176_384.81_linux.run 
sudo ./cuda_9.0.176_384.81_linux.run --override

Answer following questions while installation begin

You are attempting to install on an unsupported configuration. Do you wish to continue? y
Install NVIDIA Accelerated Graphics Driver for Linux-x86_64 384.81? n
Install the CUDA 9.0 Toolkit? y

Note: I also would so ‘N’ for cuda symbolic link, if you plan to use multiple version of cuda and cuDNN

Set up symlinks for gcc/g++

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

Setup your paths

echo 'export PATH=/usr/local/cuda-9.0/bin:$PATH' >> ~/.bashrc
echo 'export LD_LIBRARY_PATH=/usr/local/cuda-9.0/lib64:$LD_LIBRARY_PATH' >> ~/.bashrc
source ~/.bashrc

I personally do not like updating the bash, rather I create a sourc file for respective cuda version and activate it as necessary

file: cuda90-env

export PATH=/usr/local/cuda-9.0/bin${PATH:+:${PATH}}
export LD_LIBRARY_PATH=/usr/local/cuda-9.0/lib64:${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}

file: cuda92-env

export PATH=/usr/local/cuda-9.2/bin${PATH:+:${PATH}}
export LD_LIBRARY_PATH=/usr/local/cuda-9.2/lib64:${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}

To use this path just type on the terminal

source cuda90-env

Install cuDNN v7.3

In order to download cuDNN you have to be registered here https://developer.nvidia.com/developer-program/signup then download cuDNN v7.3 form https://developer.nvidia.com/cudnn

Use the link for Linux

cuDNN download

CUDNN_TAR_FILE=<downloaded file>
tar -xzvf ${CUDNN_TAR_FILE}

Copy the following files into the cuda toolkit directory.

cuda 9.0

sudo cp -P cuda/include/cudnn.h /usr/local/cuda-9.0/include
sudo cp -P cuda/lib64/libcudnn* /usr/local/cuda-9.0/lib64/
sudo chmod a+r /usr/local/cuda-9.0/include/cudnn.h /usr/local/cuda-9.0/lib64/libcudnn*

cuda 9.2

sudo cp -P cuda/include/cudnn.h /usr/local/cuda-9.2/include
sudo cp -P cuda/lib64/libcudnn* /usr/local/cuda-9.2/lib64/
sudo chmod a+r /usr/local/cuda-9.2/include/cudnn.h /usr/local/cuda-9.2/lib64/libcudnn*

Finally, to verify the installation, check

nvidia-smi

nvcc -V

Cuda-Install-and-Setup