I think it's referring to simd instructions [0]. I'm still kind of a newb myself but from what I understand these are special CPU instructions that allow you e

I think it's referring to simd instructions [0]. I'm still kind of a newb myself but from what I understand these are special CPU instructions that allow you execute the same instruction in parallel against multiple data points. This allows you to eke out a lot more performance. It's how simdjson[1] is able to outperform all other C++ json parsers. [0] https://en.wikipedia.org/wiki/SIMD https://en.wikipedia.org/wiki/SIMD [1] https://github.com/simdjson/simdjson https://github.com/simdjson/simdjson