Comment by vlod

You probably weren't looking for a tutorial about SIMD, but just in case you were interested, Mitchell [0] did one recently that got on HN [1]

[0] Mitchell Hashimoto: "Everyone Should Know SIMD" https://mitchellh.com/writing/everyone-should-know-simd

[1] https://news.ycombinator.com/item?id=49010648