I know from a few years ago that there was some work at doing GPGPU-type work on the Raspberry Pi's video hardware. This is a project that I remember reading about, but didn't look into deeply: https://www.raspberrypi.org/blog/accelerating-fourier-transf...

There's another one that goes into more detail on the "how" of running other algorithms: https://rpiplayground.wordpress.com/tag/raspberry-pi-gpu/

I'm not sure if there are limitations that would keep it from being interesting for TF or not; I don't know enough about it.

It's peobably a promo of their new Tensorflow compiler.

anything to speed up tensorflow and/or openCV either on the videocore or an inexpensive chip would be great.