I just got through the part of the talk where you mentioned all of this :)<p>BTW, are you aware of the Halide language? Might be useful for writing those CPU fallbacks.<p><a href="http:&#x2F;&#x2F;halide-lang.org&#x2F;" rel="nofollow">http:&#x2F;&#x2F;halide-lang.org&#x2F;</a>