想學深度學習，先會安裝cuda吧(ubuntu16.04+cuda8.0)

1. Download cuda包和cudnn包

# cuda-repo-ubuntu1604-8-0-local-ga2_8.0.61-1_amd64.deb cudnn-8.0-linux-x64-v5.1.tgz

# https://developer.nvidia.com/cuda-downloads

# https://developer.nvidia.com/cudnn

2. sudo dpkg -i cuda-repo-<distro>_<version>_<architecture>.deb

# 解壓cuda包

3. sudo apt-get update

# 更新Apt倉庫

4. sudo apt-get install cuda

# 安裝cuda

sudo apt install nvidia-cuda-toolkit

#ubuntu16.04自帶的7.5版本，此時安裝好的是7.5，第七步再指定到8.0

5. nvcc --version

# 查看nvcc是否安裝

6. 安裝cudnn

# which nvcc，可以查看cuda的安裝路徑，本栗子中為/usr/local/cuda-8.0

# tar xvf cudnn-8.0-linux-x64-v5.1.tgz，解壓到當前目錄cuda/中

sudo cp cuda/include/cudnn.h /usr/local/cuda-8.0/include

sudo cp cuda/lib64/libcudnn* /usr/local/cuda-8.0/lib64

sudo chmod a+r /usr/local/cuda-8.0/include/cudnn.h /usr/local/cuda-8.0/lib64/libcudnn*

7. 環境設置，修改~/.bashrc

export PATH=/usr/local/cuda-8.0/bin:$PATH

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/cuda-8.0/lib64:/usr/local/cuda-8.0/extras/CUPTI/lib64:/usr/lib/nvidia

# /usr/lib/nvidia應該指定到你的顯卡驅動版本

export CUDA_HOME=/usr/local/cuda-8.0