Running examples on CPU

[uturuncoglu]

I am trying to get familiar to NVIDIA/modulus but I have no access to any GPU. Is it possible to run the tests (like examples/cfd/darcy_fno) on CPU? I have just download the Docker container and started with the docker run --shm-size=1g --ulimit memlock=-1 --ulimit stack=67108864 --rm -it nvcr.io/nvidia/modulus/modulus:24.01 bash command since I have no GPU access on my local laptop. It seems I could run very simple torch code which is available in the documentation. But I am getting runtime error like RuntimeError: "cuda" device requested but CUDA is not supported by the hardware or driver from darcy_fno test. I think I need to modify the code to work on CPU (probably DistributedManager in darcy_trainer) but don't know how. Anyway, if you guide me about that that would be great.