How to verify CuDNN installation?
The installation of CuDNN is just copying some files. Hence to check if CuDNN is installed (and which version you have), you only need to check those files.
Install CuDNN
Step 1: Register an nvidia developer account and download cudnn here (about 80 MB). You might need nvcc --version to get your cuda version.
Step 2: Check where your cuda installation is. For most people, it will be /usr/local/cuda/. You can check it with which nvcc.
Step 3: Copy the files:
$ cd folder/extracted/contents
$ sudo cp include/cudnn.h /usr/local/cuda/include
$ sudo cp lib64/libcudnn* /usr/local/cuda/lib64
$ sudo chmod a+r /usr/local/cuda/lib64/libcudnn*
Check version
You might have to adjust the path. See step 2 of the installation.
$ cat /usr/local/cuda/include/cudnn.h | grep CUDNN_MAJOR -A 2
Notes
When you get an error like
F tensorflow/stream_executor/cuda/cuda_dnn.cc:427] could not set cudnn filter descriptor: CUDNN_STATUS_BAD_PARAM
with TensorFlow, you might consider using CuDNN v4 instead of v5.
Ubuntu users who installed it via apt: https://askubuntu.com/a/767270/10425
