CUDA_REPO_PKG=cuda-repo-ubuntu1404_7.5-18_amd64.deb &&
wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/$CUDA_REPO_PKG &&
sudo dpkg -i $CUDA_REPO_PKG
sudo apt-get update
sudo apt-get install cuda

cd ダウンロード
https://developer.nvidia.com/rdp/cudnn-download
tar xvzf cudnn-7.0-linux-x64-v4.0-prod.tgz
sudo cp cuda/include/cudnn.h /usr/local/cuda/include
sudo cp cuda/lib64/libcudnn* /usr/local/cuda/lib64

cd ~
sudo apt-get install git
git clone https://github.com/torch/distro.git ~/torch --recursive
cd ~/torch; bash install-deps;
./install.sh
source ~/.bashrc

sudo apt-get install libprotobuf-dev protobuf-compiler
luarocks install loadcaffe