Spice mix gpu

[Jieran-S]

Attempts to fix issue #225: make cpu available for the current pipeline.

Check issue for detailed description

[niklasmueboe]

If we check if gpu is available I think we can also remove the "device" from the config.

Is specifying the device number necessary, i.e.e does it need to be "cuda:0"?

[Jieran-S]

Agree. Will remove the device from config.

I have the same question regarding the device number. I think @alam-shahul made those specifications in the first place.

[alam-shahul]

I think that cuda means the same thing as cuda:0 to PyTorch, so it is okay to just use cuda if that is preferred: https://discuss.pytorch.org/t/difference-between-cuda-0-vs-cuda-with-1-gpu/93080

[alam-shahul]

I guess another way to do this would be to just leave the "device" field out from the config file if there is no GPU; this would use the "cpu" device by default, as per line 163: https://github.com/SpatialHackathon/SpaceHack2023/pull/231/files#diff-5615d1512910769a2c993538dc9bf8b5f2dfa026b30bb3ea874b5d9950cf6a9aL163

[Jieran-S]

Thank you for the comment! Since SpiceMix should be used in GPU, it would be nice to explicitly set the device (cuda) in config and only use CPU as a secondary option when cuda is not available. So I changed the code accordingly.