[janwas]

Max performance is a stretch - recompilation would not utilize tensor cores, right?

"too hard for mainstream programmers" seems overly pessimistic. I've run several workshops where devs have written dot-product kernels using Highway after 30 minutes of introduction.

[kristianp]

They said intrinsics. Highway is an abstraction on top of intrinsics.

[janwas]

OK :) A thin abstraction, though. If comparing with alternative categories such as domain-specific language or autovectorization, I'd still classify Highway as intrinsics, just portable and easier to use.