I am a newbie in DS area. I want to implement few RNN architectures and use Tensorflow to do this. I have Nvidia GPU onboard and want to do calculations on it. But, after checking the docs I don't fully understand how to install Tensorflow with GPU support. For now, my PC has a fresh Ubuntu 18.04. I realize that I need to install Cuda toolkit, but not sure, how to do it in the right way.