rust-lang/portable-simd
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/ 100

GradeA

A well-known project done right. Strong docs and solid engineering throughout.

Top 6% of 5,156 graded repos

The testing ground for the future of portable SIMD in Rust

Documentation90
Engineering96
Health100
Rust1,058Apache-2.01mo ago

Outstanding. A score of 95/100 puts this repo in a very small tier of truly well-engineered projects.

Top fixes

Highest-impact changes first, ranked by point weight

9 to address
  1. 1
    README12pt

    Add more sections (Overview, Install, Usage, Contributing) using ## headings.

  2. 2
    Install and run instructions9pt

    Add a .env.example listing all required environment variables so contributors know what to set up.

  3. 3
    Reproducibility6pt

    Add a Dockerfile, .nvmrc, or .python-version to pin the runtime version and make the environment reproducible.

  4. 4
    Reproducibility6pt

    Add .github/dependabot.yml with at least one package-ecosystem entry so dependencies are updated automatically.

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Scorecard

Every check, grouped by category and sorted worst-first

Documentation

90

Contributing guide5pt69

Contributing guide is too short for full depth credit (−6 pts). 400+ words earns the full +12 pts.

→ Add setup instructions, code style notes, and how to run tests.

Install and run instructions9pt90

README documents how to install the project.

README12pt93

README is present.

License6pt100

Licensed under Apache-2.0.

Engineering

96

Reproducibility6pt70

Lockfile present (Cargo.lock). Installs are reproducible.

Tests18pt100

Test files detected (crates/core_simd/tests).

CI/CD14pt100

CI is configured (.github/workflows/ci.yml).

Linting and formatting5pt100

Rust linting configured (cargo clippy in CI, cargo fmt in CI).

Issue and PR templates6pt100

Issue or PR templates present.

Project health

100

Dependency manifest6pt100

Dependency manifest found (Cargo.toml).

Repository metadata5pt100

Repository has a description.

Activity5pt100

Actively maintained (pushed within the last month).

Housekeeping3pt100

.gitignore present.

Repository health signals

Activity, community, and responsiveness at scan time

Activity

  • -
    Commits (30d / 90d)
  • 105
    Forks
  • 0
    Releases

Community

  • -
    Community health
  • -
    authors own >50% of commits
  • 1,058
    Watchers

Responsiveness

  • 2h
    Median issue response
  • 1d
    Median PR merge time
  • 115
    Open issues
Repository files14 root entries
  • .github
    Good: CI is configured (.github/workflows/ci.yml).
    Good: Issue or PR templates present.
  • crates
    Good: Test files detected (crates/core_simd/tests).
  • .gitignore
    Good: .gitignore present.
  • beginners-guide.md
  • Cargo.lock
    Good: Lockfile present (Cargo.lock). Installs are reproducible.
  • Cargo.toml
    Good: Dependency manifest found (Cargo.toml).
  • CONTRIBUTING.md
    Issue: Contributing guide is too short for full depth credit (−6 pts). 400+ words earns the full +12 pts.Fix: Add setup instructions, code style notes, and how to run tests.
    Issue: Contributing guide lacks a setup section (−12 pts).Fix: Show new contributors how to get a local dev environment running.
    Issue: Contributing guide lacks a code style section (−8 pts).Fix: Describe your linting/formatting rules and how to run them.
    Good: Contributing guide explains how to run tests.
    Good: Contributing guide describes the PR/review workflow.
    Issue: Contributing guide has no code examples (−5 pts).Fix: Add code blocks showing example commands for setup, running tests, and submitting a PR.
  • Cross.toml
  • LICENSE-APACHE
  • LICENSE-MIT
  • README.md
    Good: README is present.
    Issue: README has some structure (−7 pts). 2-3 headings earns partial credit; 4+ earns the full +15 pts.Fix: Add more sections (Overview, Install, Usage, Contributing) using ## headings.
    Good: README includes screenshots or visuals. Great for first impressions.
    Good: README has code examples.
    Good: README links to a live demo or deployed app.
    Good: README includes status badges.
    Good: README documents how to install the project.
    Good: README documents how to run the project.
  • rust-toolchain.toml
  • subtree-sync.sh
  • triagebot.toml
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