Seems there are some issues with suitable drivers/cuda/pytorch incase of RTX GPUs.

  
    
    
    RuntimeError: CuDNN error: CUDNN_STATUS_SUCCESS 
  
  
    My environment is 

ubuntu 16.04
python 3.5
RTX 2080 ti
cuda-9.0
cudnn 7

When I tried to train the model, there was RuntimeError (RuntimeError: CuDNN error: CUDNN_STATUS_SUCCESS). 
First of all, I totally could not understand what above error means. 
Furthermore the same code what I tried to train worked well on gtx 1080 ti (the rest environments are totally same as above) 
What is the problem?