I’m trying to get pytorch working on my ubuntu 14.04 machine with my GTX 970.
It’s been stated that you don’t need to have previously installed CUDA to use pytorch so my first questions are: Why are there options to install for CUDA 7.5 and CUDA 8.0? How do I tell which is appropriate for my machine and what is the difference between the two options?
I selected the Ubuntu -> pip -> cuda 8.0 install and it seemed to complete without issue. However if I load python and run
import torch
torch.cuda.is_available()

I get False.
Other cuda operations fail as well.
Second question: How is this determined?
Is there something I need in my environment for my device to be detected?
It would be great if there were a post-install checklist to help diagnose these issues. If there is one and I’ve missed it, please let me know!