Optimize CI#1642
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The macOS test job had no Swatinem/rust-cache step, so it recompiled the entire workspace from scratch on every run (~13m of cold compile on runners that cost ~10x the Linux ones). Add the cache step, matching the Linux job. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The dockerfile job ran `docker build .` with no caching, so the full release-LTO build of the workspace re-ran from scratch every time (~32m). Plain layer caching wouldn't help: `COPY . ` precedes `make deps`/`make build`, so any source change busts every layer after it. Instead, mount the cargo registry/git and target dirs as BuildKit cache mounts in the Dockerfile (incremental compile, contents kept out of the final image), and persist them across ephemeral runners via actions/cache + buildkit-cache-dance. The first run is cold; subsequent runs reuse the build cache. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Benchmarking resultsBenchmark for program
|
| Command | Mean [s] | Min [s] | Max [s] | Relative |
|---|---|---|---|---|
Cairo-vm (Rust, Cairo 1) |
10.521 ± 0.040 | 10.430 | 10.566 | 5.92 ± 0.04 |
cairo-native (embedded AOT) |
1.779 ± 0.009 | 1.767 | 1.798 | 1.00 |
cairo-native (embedded JIT using LLVM's ORC Engine) |
1.799 ± 0.017 | 1.782 | 1.829 | 1.01 ± 0.01 |
Benchmark for program dict_snapshot
Open benchmarks
| Command | Mean [ms] | Min [ms] | Max [ms] | Relative |
|---|---|---|---|---|
Cairo-vm (Rust, Cairo 1) |
527.1 ± 3.5 | 521.3 | 533.7 | 1.00 |
cairo-native (embedded AOT) |
1590.3 ± 6.0 | 1583.3 | 1599.0 | 3.02 ± 0.02 |
cairo-native (embedded JIT using LLVM's ORC Engine) |
1626.5 ± 12.2 | 1609.5 | 1641.9 | 3.09 ± 0.03 |
Benchmark for program factorial_2M
Open benchmarks
| Command | Mean [s] | Min [s] | Max [s] | Relative |
|---|---|---|---|---|
Cairo-vm (Rust, Cairo 1) |
4.705 ± 0.066 | 4.652 | 4.877 | 2.18 ± 0.04 |
cairo-native (embedded AOT) |
2.167 ± 0.063 | 2.099 | 2.281 | 1.01 ± 0.03 |
cairo-native (embedded JIT using LLVM's ORC Engine) |
2.154 ± 0.031 | 2.122 | 2.210 | 1.00 |
Benchmark for program fib_2M
Open benchmarks
| Command | Mean [s] | Min [s] | Max [s] | Relative |
|---|---|---|---|---|
Cairo-vm (Rust, Cairo 1) |
4.621 ± 0.087 | 4.551 | 4.822 | 2.89 ± 0.06 |
cairo-native (embedded AOT) |
1.600 ± 0.006 | 1.589 | 1.611 | 1.00 |
cairo-native (embedded JIT using LLVM's ORC Engine) |
1.625 ± 0.006 | 1.615 | 1.633 | 1.02 ± 0.01 |
Benchmark for program linear_search
Open benchmarks
| Command | Mean [ms] | Min [ms] | Max [ms] | Relative |
|---|---|---|---|---|
Cairo-vm (Rust, Cairo 1) |
567.4 ± 3.8 | 564.6 | 574.6 | 1.00 |
cairo-native (embedded AOT) |
1639.4 ± 28.0 | 1618.5 | 1713.8 | 2.89 ± 0.05 |
cairo-native (embedded JIT using LLVM's ORC Engine) |
1666.1 ± 18.7 | 1641.7 | 1707.6 | 2.94 ± 0.04 |
Benchmark for program logistic_map
Open benchmarks
| Command | Mean [ms] | Min [ms] | Max [ms] | Relative |
|---|---|---|---|---|
Cairo-vm (Rust, Cairo 1) |
482.9 ± 4.1 | 477.1 | 490.4 | 1.00 |
cairo-native (embedded AOT) |
1801.0 ± 65.3 | 1762.8 | 1983.9 | 3.73 ± 0.14 |
cairo-native (embedded JIT using LLVM's ORC Engine) |
1915.2 ± 17.1 | 1885.9 | 1943.3 | 3.97 ± 0.05 |
Benchmark results Main vs HEAD.Base
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- unused-deps: cargo-machete only parses Cargo manifests, so it needs neither LLVM nor a compiled workspace. Remove the LLVM install/repo steps and env (also one fewer apt.llvm.org dependency to flake). - test: replace `apt-get update && apt-get upgrade -y` with just `apt-get update`; the job only needs the pinned LLVM-19 packages, not a full system upgrade (~41s).
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Optimizing CI
Making CI faster using caching.
Introduces Breaking Changes?
No.