That is more or less what I was getting at, while trying to remain polite on the subject. The truth is that none of the deep learning backends have real support

That is more or less what I was getting at, while trying to remain polite on the subject. The truth is that none of the deep learning backends have real support for it and OSX supports an outdated version (IIRC). It has seen very little adoption outside of a handful of niche use cases.