不安装nvidia-docker2，容器使用宿主机gpu

安装nvidia-container-runtime.md

docker 19.03已经正式发布了，这次发布对我来说有两大亮点。

• 就是docker不需要root权限来启动和运行了
• 就是支持GPU的增强功能，我们在docker里面想读取nvidia显卡再也不需要额外的安装nvidia-docker了

安装NVIDIA Container Runtime

cat nvidia-container-runtime-script.sh

curl -s -L https://nvidia.github.io/nvidia-container-runtime/gpgkey | \
  sudo apt-key add -
distribution=$(. /etc/os-release;echo $ID$VERSION_ID)
curl -s -L https://nvidia.github.io/nvidia-container-runtime/$distribution/nvidia-container-runtime.list | \
  sudo tee /etc/apt/sources.list.d/nvidia-container-runtime.list
sudo apt-get update

执行脚本

$ sh nvidia-container-runtime-script.sh
$ sudo apt-get install nvidia-container-runtime
$ which nvidia-container-runtime-hook
#/usr/bin/nvidia-container-runtime-hook

测试

$ docker run -it --rm --gpus all nvidia/cuda:10.0-base nvidia-smi

+-----------------------------------------------------------------------------+
| NVIDIA-SMI 418.165.02   Driver Version: 418.165.02   CUDA Version: 10.2     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  Tesla P100-SXM2...  Off  | 00000000:04:00.0 Off |                    0 |
| N/A   30C    P0    42W / 300W |      0MiB / 16280MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+
|   1  Tesla P100-SXM2...  Off  | 00000000:06:00.0 Off |                    0 |
| N/A   27C    P0    41W / 300W |      0MiB / 16280MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+
|   2  Tesla P100-SXM2...  Off  | 00000000:07:00.0 Off |                    0 |
| N/A   30C    P0    39W / 300W |      0MiB / 16280MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+
|   3  Tesla P100-SXM2...  Off  | 00000000:08:00.0 Off |                    0 |
| N/A   28C    P0    33W / 300W |      0MiB / 16280MiB |      5%      Default |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                       GPU Memory |
|  GPU       PID   Type   Process name                             Usage      |
|=============================================================================|
|  No running processes found                                                 |
+-----------------------------------------------------------------------------+