[nl]

I don't think Google is working on it. Intel and AMD have some comments on the relevant issue[1].

As far as I can see there seems to be a lot of noise ("How do I run Caffe on OpenCL") and not huge amounts of progress.

The truth is that you are better off waiting for external NVidia GPUs[2] to become widely available[3] than waiting for a decent OpenCL implementation.

[1] https://github.com/tensorflow/tensorflow/issues/22

[2] http://udibr.github.io/using-external-gtx-980-with-macbook-p...

[3] http://www.pcworld.com/article/3019369/hardware/the-razer-co...

[dharma1]

the openCL branch of caffe has had a lot of work recently and is usable now. Still a bit slower than with CUDA/CuDNN but works

https://github.com/BVLC/caffe/tree/opencl