Brainiarc7/nvidia-docker2-deploy-ubuntu-16.04LTS.md

## nvidia-docker2-deploy-ubuntu-16.04LTS.md

      
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              nvidia-docker2-deploy-ubuntu-16.04LTS.md
            
          
    How to install NVIDIA Docker 2 package on Ubuntu and Debian:
If you came to this result (from Google or elsewhere) after realizing that Nvidia-docker's entry on this subject does not result in a working installation, here are the basic steps needed to install this package correctly:
For starters, ensure that you've installed the latest Docker Community edition by following the steps below:
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo apt-key fingerprint 0EBFCD88
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
sudo apt-get update
sudo apt-get install docker-ce
sudo service docker restart

Then, proceed to adding the required repositories and installing the needed software:
Start with nvidia-docker-runtime:
For Ubuntu distributions (Xenial x86_64):
First, if you have older nvidia-docker installations, purge the installation and all associated GPU containers:
docker volume ls -q -f driver=nvidia-docker | xargs -r -I{} -n1 docker ps -q -a -f volume={} | xargs -r docker rm -f
sudo apt-get purge -y nvidia-docker

Then proceed:
curl -s -L https://nvidia.github.io/nvidia-container-runtime/gpgkey | \
  sudo apt-key add -
curl -s -L https://nvidia.github.io/nvidia-container-runtime/ubuntu16.04/amd64/nvidia-container-runtime.list | \
  sudo tee /etc/apt/sources.list.d/nvidia-container-runtime.list
sudo apt-get update

For Debian distributions (Stretch x86_64):
curl -s -L https://nvidia.github.io/nvidia-container-runtime/gpgkey | \
  sudo apt-key add -
curl -s -L https://nvidia.github.io/nvidia-container-runtime/debian9/amd64/nvidia-container-runtime.list | \
  sudo tee /etc/apt/sources.list.d/nvidia-container-runtime.list
sudo apt-get update

Install the nvidia-container-runtime package:
sudo apt-get install nvidia-container-runtime

Followed by nvidia-docker2:
sudo apt-get install nvidia-docker2

Docker Engine setup:
To register the nvidia runtime, use either method below on Ubuntu 16.04LTS+. It is recommended that you use the systemd drop-in file method to prevent docker upgrades from directly overwriting the docker daemon configuration file.
(a).Systemd drop-in file (Recommended approach, but see notes below):
sudo mkdir -p /etc/systemd/system/docker.service.d
sudo tee /etc/systemd/system/docker.service.d/override.conf <<EOF
[Service]
ExecStart=
ExecStart=/usr/bin/dockerd --host=fd:// --add-runtime=nvidia=/usr/bin/nvidia-container-runtime
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

(b). Daemon configuration file (Use if you're on a distribution such as Devuan, without a systemd dependency):
sudo tee /etc/docker/daemon.json <<EOF
{
    "runtimes": {
        "nvidia": {
            "path": "/usr/bin/nvidia-container-runtime",
            "runtimeArgs": []
        }
    }
}
EOF
sudo pkill -SIGHUP dockerd

Basic usage:
nvidia-docker registers a new container runtime to the Docker daemon.
You must select the nvidia runtime when using docker run, as illustrated below (with nvidia-smi):
sudo docker run --runtime=nvidia --rm nvidia/cuda nvidia-smi

Notes:
If the systemd unit method fails, skip straight to the configuration file method. The result is the same.
If you do not want to run Docker as a root user, the smart approach is as follows:
Add the docker group if it doesn't already exist:
sudo groupadd docker

Add the connected user "$USER" to the docker group. Change the user name to match your preferred user if you do not want to use your current user:
sudo gpasswd -a $USER docker

Either do a newgrp docker or log out/in to activate the changes to groups.
You can use:
docker run hello-world

To check if you can run docker without sudo.
For the snippet above, you can now run it as:
docker run -u $(USER) --runtime=nvidia --rm nvidia/cuda nvidia-smi

Or directly IF you're logged in as a user that's a member of the docker group:
docker run --runtime=nvidia --rm nvidia/cuda nvidia-smi