Pritesh_Gohil:

So is it possible I only install pytorch without CUDA runtime and let the pytorch use cuda library present in my system? My system has CUDA 10.0 already installed.


Yes, that’s possible if you build from source as described here 53.



 Pritesh_Gohil:

Does it mean I should not use conda virtual environment? and do local installation of required packages?


No, you can still use virtual environments (and I would also recommend to do so).