You can do some refinement right now already (from WWDC 2019). But yes, most models are trained on NVIDIA GPUs that are deep learning. All of the other model t

You can do some refinement right now already (from WWDC 2019). But yes, most models are trained on NVIDIA GPUs that are deep learning. All of the other model types can already be trained on regular CPUs. https://machinethink.net/blog/coreml-training-part1/ https://machinethink.net/blog/coreml-training-part1/