In particular, my CUDA version is too old and not compatible with PyTorch. I tried to install a compatible version of PyTorch (2.0.1) and to reinstall timm. When I attempt to train, the error message is:
ImportError: /nnSAM_env/lib/python3.9/site-packages/torch/lib/libtorch_cpu.so: undefined symbol: iJIT_NotifyEvent