claude-bot
2b255a333a
Raw pilot data stays ignored (copyrighted text); blind key and numeric results are tracked. Runner notes move into docs/infrastructure. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01FYqwNMyPUHeTbFWg83GQq6
23 lines
2.5 KiB
Markdown
23 lines
2.5 KiB
Markdown
# Runner `ubuntu24.04-x64-lean4.35` (set up 2026-10-21)
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Gitea runner `iZ6we8b3jgd6nc2qehu06lZ` (act_runner v5.2.0, runner id 7), label `ubuntu24.04-x64-lean4.35`. Both `lean-bench` and `lean-agent` CI run here; the old `gitea-cicd-server-for-CODEX` label is no longer used.
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## The host
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- Jobs run **on the host, not in a container**, as root. Ubuntu 24.04.5, kernel 6.8, 4 CPU, 15 GiB RAM, no swap, 99 GB disk (88 GB free at setup).
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- Lean 4.35.0 via elan 4.2.4 in `/root/.elan`. Python 3.12.3, git 2.43, gcc 13.3, curl, jq.
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- **No Node**, so `actions/checkout` and other JavaScript actions cannot run. Workflows clone with `git fetch --depth 1 origin $SHA` using `${{ github.token }}`.
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- Docker was not installed; the lean-bench `image` job installs `docker.io` + `docker-buildx` (Docker 29.1.3) if missing.
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- Runner capacity appears to be 1: jobs from both repos queue behind each other.
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## What CI does
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- **lean-agent** (`.gitea/workflows/ci.yml`): unit tests with the real Lean verifier, a CLI end-to-end run with a scripted provider, and a Mathlib task against lean-bench's host cache (skips if the cache is not ready).
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- **lean-bench** (`.gitea/workflows/ci.yml`): `python` (ruff + pytest) -> `lean` (host Mathlib cache + `docker/smoke.py` with real Lean) -> `image` (build, smoke inside the image, keep). Triggers: push to `main` and `ci/**`, pull requests, manual. `image` is skipped for pull requests.
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- **Image kept on the host**: `lean-bench:latest`, `:main`, `:lean4.35`, `:sha-<short>` (about 15 GB). `latest`/`main` are tagged only from `main`. Nothing prunes old `sha-*` tags.
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- Mathlib host cache: `/opt/lean-cache/leanbench-<hash of lean-toolchain+lakefile>` with a `.ready` marker, created by `.gitea/scripts/prepare-mathlib.sh` under a flock. `import Mathlib` elaborates in about 4 s there.
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## Lessons
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- `lake exe cache get` regularly drops a few of about 9,031 files ("Broken pipe" / "Connection reset"), and the same files can fail twice in a row. Retries fix it.
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- Mathlib's post-update hook runs the cache fetch **inside `lake update`**, so retries placed after it never run. Set `MATHLIB_NO_CACHE_ON_UPDATE=1` for `lake update` and fetch in a retry loop. In the image the archives live in a BuildKit cache mount (`/root/.cache/mathlib`), so a retried build resumes.
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- Cold image build about 19 min; with layers cached about 2 min.
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- Gitea 1.26.1 has no cancel-run API; a person cancels in the web UI, then the API can `DELETE` the finished run. The Actions logs endpoint needs a token; the runs/jobs status endpoints work anonymously on this public repo.
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