After insatllation of the cuDNN I’ve checked if everything is Ok, as described here (section 2.4 Veryfing)…
The final command in verification test was ./mnistCUDNN.
Here is what I saw at the screen:
cudnnGetVersion(): 7603 , CUDNN_VERSION from cudnn.h : 7603 (7.6.3)
Cuda failurer version : GCC 7.4.0
Error: system has unsupported display driver / cuda driver combination