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simd-matrix: key native-resolving caches by the runner's target features #345

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Merged
AdaWorldAPI merged 1 commit into from
Oct 8, 2026
Merged

simd-matrix: key native-resolving caches by the runner's target features #345

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22 changes: 21 additions & 1 deletion .github/workflows/simd-matrix.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -154,7 +154,18 @@ jobs:
with:
persist-credentials: false
- uses: dtolnay/rust-toolchain@stable
# The build below resolves `target-cpu=native` on THIS runner, and the
# pool is heterogeneous (see host-native). A cache keyed only by job
# restores proc-macro .so files compiled for another runner's CPU, and
# rustc dies loading them with SIGILL (seen on ndarray #344: the cached
# `paste` .so). Key the cache by the target features rustc resolves for
# `native` here, which is exactly what decides those artifacts.
- name: native target features (cache key)
id: cpu
run: echo "features=$(rustc +stable --print cfg -C target-cpu=native | grep target_feature | sha256sum | cut -c1-16)" >> "$GITHUB_OUTPUT"
- uses: Swatinem/rust-cache@v2
with:
key: host-native-${{ steps.cpu.outputs.features }}
- name: what silicon is this runner
run: lscpu | sed -n '1,/^Flags/p' | head -30
- name: masking parity (host-native, unpinned — READ THE HEADER LINE)
Expand Down Expand Up @@ -272,9 +283,18 @@ jobs:
with:
persist-credentials: false
- uses: dtolnay/rust-toolchain@nightly
# The build below resolves `target-cpu=native` on THIS runner, and the
# pool is heterogeneous (see host-native). A cache keyed only by job
# restores proc-macro .so files compiled for another runner's CPU, and
# rustc dies loading them with SIGILL (seen on ndarray #344: the cached
# `paste` .so). Key the cache by the target features rustc resolves for
# `native` here, which is exactly what decides those artifacts.
- name: native target features (cache key)
id: cpu
run: echo "features=$(rustc +nightly --print cfg -C target-cpu=native | grep target_feature | sha256sum | cut -c1-16)" >> "$GITHUB_OUTPUT"
- uses: Swatinem/rust-cache@v2
with:
key: nightly
key: nightly-${{ steps.cpu.outputs.features }}
- name: masking parity (nightly-simd)
run: bash scripts/masking-parity.sh nightly
- name: lib tests on the nightly arm
Expand Down
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