add AVX2/NEON matrix builds with caching#46
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adust09
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Sep 20, 2025
adust09
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- Matrix coverage Replaces the single Ubuntu job with a two-target build/test matrix (x64 AVX2, arm64 NEON) and threads through architecture-specific RUSTFLAGS.
- Performance Introduces Swatinem/rust-cache to the build, clippy, and rustfmt jobs and reorders steps for clearer execution.
- Tooling polish Renames jobs/steps for clarity, standardises cargo test/clippy invocations, and enables RUST_BACKTRACE for easier debugging.
branche name: feat/multi_arch_ci
## 背景
- 本ワークスペースの SIMD 最適化（AVX2/AVX‑512/NEON）コードパスの劣化検知が必要
。
- GitHub ホストランナーは AVX‑512 を保証せず、ARM64 も環境により未提供のため、実行戦略を分離。
- AVX2: x86_64 ランナーでビルド＋テストを実行。
- AVX‑512: x86_64 ランナーでは未対応の可能性が高く、ビルドのみで担保。
- NEON: ARM64 ランナー（例: `ubuntu-24.04-arm64` または `self-hosted, Linux, ARM64`）でビルド＋テストを実行。
## スコープ
- `.github/workflows/rust.yml` の Build & Test を CPU 機能マトリクス化。
- x86_64/AVX2 は実行テストまで、x86_64/AVX‑512 はビルドのみ、ARM64/NEON は実行テストまで。
- 既存の Clippy/Fmt ジョブは維持。
- すべて nightly、`Swatinem/rust-cache@v2`、`RUST_BACKTRACE=1` を適用。
## 受け入れ条件
- Push/PR で以下が動作:
- x64/AVX2: リリースビルド＋テストが成功。
- x64/AVX‑512: リリースビルドが成功（テストはスキップ）。
- ARM64/NEON: リリースビルド＋テストが成功（ARM64 ランナーが利用可能な場合）。
- Clippy/Fmt は従来通り、警告・未整形で CI が失敗。
- 2 回目以降の実行でビルドキャッシュが効く。
## 注意点
- AVX‑512 はホストランナーで未対応の可能性が高く、テスト実行は SIGILL 回避のためスキップ。
- ARM64 ランナーが未提供の場合は NEON 行を一時的にコメントアウト、または `self-hosted` ラベル運用に切替。
- 実行テストは `is_x86_feature_detected!` や `cfg(target_feature)` で条件化し、誤実行を防止。
## 提案する rust.yml（差し替え案）
```yaml
name: Rust CI
on:
push:
branches: [ "main" ]
pull_request:
branches: [ "main" ]
workflow_dispatch:
permissions:
contents: read
concurrency:
group: rust-ci-${{ github.ref }}
cancel-in-progress: true
env:
CARGO_TERM_COLOR: always
RUST_BACKTRACE: 1
jobs:
build-test-matrix:
name: Build & Test (${{ matrix.name }})
runs-on: ${{ matrix.os }}
strategy:
fail-fast: false
matrix:
include:
- name: x64-avx2
os: ubuntu-latest
rustflags: -C target-cpu=haswell
run_tests: true
- name: x64-avx512-build
os: ubuntu-latest
rustflags: -C target-cpu=skylake-avx512
run_tests: false # build only to avoid SIGILL
- name: arm64-neon
# 利用可能な場合は GitHub ホスト ARM64 ランナーに置換
# 例: ubuntu-24.04-arm64（組織設定依存）
# 未提供時は self-hosted を使用: [self-hosted, Linux, ARM64]
os: ubuntu-24.04-arm64
rustflags: -C target-feature=+neon
run_tests: true
steps:
- uses: actions/checkout@v4
- name: Install nightly toolchain
uses: actions-rust-lang/setup-rust-toolchain@v1
with:
toolchain: nightly
- name: Cache cargo build
uses: Swatinem/rust-cache@v2
- name: Build (release)
run: cargo build --workspace --release --verbose
env:
RUSTFLAGS: ${{ matrix.rustflags }}
- name: Test (release)
if: ${{ matrix.run_tests == true }}
run: cargo test --workspace --release --verbose
env:
RUSTFLAGS: ${{ matrix.rustflags }}
clippy:
runs-on: ubuntu-latest
name: Clippy
steps:
- uses: actions/checkout@v4
- name: Install nightly toolchain
uses: actions-rust-lang/setup-rust-toolchain@v1
with:
toolchain: nightly
components: clippy
- name: Cache cargo build
uses: Swatinem/rust-cache@v2
- name: Clippy (deny warnings)
run: cargo clippy --workspace --all-targets --all-features -- -D warning
s
fmt:
runs-on: ubuntu-latest
name: Rustfmt
steps:
- uses: actions/checkout@v4
- name: Install nightly toolchain
uses: actions-rust-lang/setup-rust-toolchain@v1
with:
toolchain: nightly
components: rustfmt
- name: Cache cargo build
uses: Swatinem/rust-cache@v2
- name: Check formatting
run: cargo fmt --all -- --check
```
…ration in rust.yml
…moving workspace flag
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