Could MacBook Pros (with Intel HD Graphics 3000 384 MB, to be more specific) train with GPU? I've always wanted to train algorithms but without using the GPU it is really slow.
I doubt the integrated Intel Card would be supported, even if it is, using the CPU would be just as good if not better. A lot of the high performance you see on GPUs are because of very highly optimized libraries available for Nvidia cards (like CuDNN) and so on.