I built a CSV parser to try Go 1.26's new SIMD package
Hey HN, A CSV parser using Go 1.26's experimental simd/archsimd package. I wanted to see what the new SIMD API looks like in practice. CSV parsing is mostly "find these bytes in a buffer"—load 64 bytes, compare, get a bitmask of positions. The interesting part was handling chunk boundaries correctly (quotes and line endings can split across chunks). - Drop-in replacement for encoding/csv - ~20% faster for unquoted data on AVX-512 - Quoted data is slower (still optimizing) - Scalar fallback for non-AVX-512 Requires GOEXPERIMENT=simd.…
I built a CSV parser to try Go 1.26's new SIMD package launched on January 27, 2026 with 8 votes, #1,339 of 14,584 launches that month and more than 75% of that year's launches.
What it does
High-performance SIMD-accelerated CSV parser for Go 1.26+ using simd/archsimd. Drop-in replacement for encoding/csv - nnnkkk7/go-simdcsv
In the maker’s words, at launch
Hey HN, A CSV parser using Go 1.26's experimental simd/archsimd package. I wanted to see what the new SIMD API looks like in practice. CSV parsing is mostly "find these bytes in a buffer"—load 64 bytes, compare, get a bitmask of positions. The interesting part was handling chunk boundaries correctly (quotes and…
Does a similar job
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uDSV.js – A faster CSV parser2023 · github.com · ▲67Hey folks! I know CSV parsers (especially in JS) aren't terribly exciting and someone writes a "better" one every week. I'm in the middle of my parental leave, and this was a project that came out of me looking for the fastest/smallest CSV parser. It all started so innocently, and then turned into a benchmark-validation-athon; the library itself took ~2 weeks to write, but the performance comparisons took another ~4 weeks (on and off). The benchmarks were a huge effort, but I think they are the most thorough to date, both in breadth and in depth, so hopefully you find them useful:…
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Source: Show HN post ↗ · launch text quoted in part
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