# rust-lang/portable-simd

The testing ground for the future of portable SIMD in Rust

Repository: https://github.com/rust-lang/portable-simd
Canonical: https://ross.abutalabs.com/products/portable-simd
Language: Rust
License: Apache-2.0
License Family: permissive
Last push: 2026-07-30T19:34:19+00:00

## Health v2 (maintenance only)
Score: 75/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 95, release rhythm 35, longevity 100
- inputs: {"age_days": 2172, "days_push": 34, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1072, forks 106 (observed 2026-08-28T04:03:28.343302+00:00)

## What it is
The official Rust project group repository developing a portable SIMD API for the Rust standard library, exposing architecture-independent SIMD vector types like f32x4. It is a nightly-only testing ground for a future std::simd stabilization.

## Use cases
- write portable SIMD code in Rust that compiles across x86 and ARM
- vectorize numeric loops with SIMD vectors without writing intrinsics
- experiment with the future std::simd API on nightly Rust
- perform element-wise math on fixed-size float or integer vectors
- prototype data-parallel kernels before SIMD stabilization

## When to choose
- you need architecture-portable SIMD in Rust without per-target intrinsics
- you are on nightly Rust and want to help test the future std::simd API
- you want operator-overloaded SIMD vectors up to 512 bits

## When to avoid
- you need a stable, production-guaranteed API today
- you require architecture-specific intrinsics or the latest CPU features, where stdarch is a better fit
- your project must build on stable Rust

## Facets
- artifact type: library
- maturity: experimental
- function: concurrency, compiler, developer-tools
- domain: programming-languages, performance
- platform: rust, cross-platform
- tags: simd, vectorization, nightly-rust, std-library, portable-simd, algorithms, gpu

## Member repositories
- rust-lang/portable-simd (main) score 75

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:28.343302+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:53:43.300037+00:00, confidence not recorded.
  - readme: https://github.com/rust-lang/portable-simd (fetched 2026-08-28T04:03:28.343302+00:00, sha ab03e702165c)
- Data as of 2026-08-30T08:39:29.467469+00:00.