How to verify CuDNN installation?

Installing CuDNN just involves placing the files in the CUDA directory. If you have specified the routes and the CuDNN option correctly while installing caffe it will be compiled with CuDNN.

You can check that using cmake. Create a directory caffe/build and run cmake .. from there. If the configuration is correct you will see these lines:

-- Found cuDNN (include: /usr/local/cuda-7.0/include, library: /usr/local/cuda-7.0/lib64/libcudnn.so)-- NVIDIA CUDA:--   Target GPU(s)     :   Auto--   GPU arch(s)       :   sm_30--   cuDNN             :   Yes

If everything is correct just run the make orders to install caffe from there.