CUDA version for fastbook

Hi fastaiers,

I am setting up a Ubuntu 20.04 box, with a GTX 1080 Ti, to work through the fastbook - excited :slight_smile: !

Is there a specific CUDA version that is required or recommended?

In fact, are there recommended versions for:

  • Python
  • PyTorch
  • CUDA


Hello there,

3.9 is the latest stable version of Python, but I use 3.10 and have not thus far encountered any errors with PyTorch or fastai. However, note that some libraries like TensorFlow only support up to 3.9, so that’s what you might be better off with.

The nice thing about PyTorch is that it takes care of CUDA dependencies for you (regardless of whether your package manager is pip or Anaconda), therefore no need to worry about them. You can check out the PyTorch docs for more info on that.

Oh, and fastai recently announced fastchan, a “conda mini-distribution with a focus on the PyTorch ecosystem” that makes the “installation and updates of libraries such as PyTorch and RAPIDS […] faster, easier, and more reliable”. Considering your situation, it may be worthwhile to give it a look.


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Thanks, that is helpful. I’ve been using Python 3.7 so far because the Miniconda default 3.8 gave me some trouble with CUDA (it somehow did not detect my GPU). I didn’t think to try 3.9 or 3.10, but I’ll give those a shot!

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