摘自http://askubuntu.com/questions/767269/how-can-i-install-cudnn-on-ubuntu-16-04
For TensorFlow or theano, I would like to install cuda and CuDNN. How do I do that on Ubuntu 16.04?
Answer:
Step 0: Install cuda from the standard repositories.
Step 1: Register an nvidia developer account and download cudnn here (about 80 MB)
Step 2: Check where your cuda installation is. For the installation from the repository it is /usr/lib/... and /usr/include. Otherwise, it will be /urs/local/cuda/. You can check it with which nvcc or ldconfig -p | grep cuda
Step 3: Copy the files:
$ cd folder/extracted/contents
$ sudo cp include/cudnn.h /usr/include
$ sudo cp lib64/libcudnn* /usr/lib/x86_64-linux-gnu/
$ sudo chmod a+r /usr/lib/x86_64-linux-gnu/libcudnn*