I do not know about the quality of this since I do not use NNs, but there is https://github.com/hughperkins/DeepCL https://github.com/hughperkins/DeepCL and I t

I do not know about the quality of this since I do not use NNs, but there is https://github.com/hughperkins/DeepCL https://github.com/hughperkins/DeepCL and I think I have seen others.