TonyBai

Oct 22, 2026 · Backend Development

Go SIMD Deep Dive: Hardware, Compiler Intrinsics & 9x Dot Product Speedup

This article explores Go's new experimental SIMD packages (simd/archsimd and simd), explaining SIMD hardware concepts, vector register operations, common SIMD patterns like broadcast and fused multiply-add, compiler intrinsic mapping, and demonstrates a dot product implementation achieving 9x speedup over scalar code.