Hi. Halide may be of interest to other forums too, like mobile, or Atom, or ...?
Halide's idea is to separates algorithm from "scheduling"
The performance numbers are impressive, and probably product differentiators.
The authors, Ragan-Kelly, Adams, Paris, Levoy, Amarasinghe, and Durand, presented at SIGRAPH 2012.
If you attended their session I'd appreciate hearing your take.
Parallel, coarse an fine, seems to, finally, be emerging as more real products are introduced.
I'm looking forward to Phi.