feat(chapel): Wave 2 — chapel-multilocale gate (-nl 2 via gasnet+smp, #87 option A) #39

Workflow file for this run

.github/workflows/chapel-ci.yml at 45855de

	# SPDX-License-Identifier: MPL-2.0
	#
	# chapel-ci — strict CI gates for the OPTIONAL Chapel mass-panic harness.
	#
	# The Rust binary stands alone (USB-stick-portable, single-machine). chapel/ is
	# a detachable multi-machine harness on top. This workflow exercises the harness
	# and the Rust↔Chapel contract surface.
	#
	# Why an aggregator gate? The 6 gate jobs are path-filtered (they only do
	# real work when chapel/** or the Rust contract files change). But path-filtered
	# workflows that don't trigger leave required status checks "expected but not
	# reported" — which blocks unrelated PRs from merging when the gates are in
	# the Base ruleset. Solution: a single `chapel-ci-gate` job that ALWAYS runs
	# and aggregates. The ruleset requires only the gate. The gate reports:
	# - SUCCESS immediately if no chapel-relevant paths changed.
	# - SUCCESS if all 6 underlying jobs succeeded on a relevant change.
	# - FAILURE if any underlying job failed.
	#
	# Seven strict jobs (no continue-on-error anywhere):
	# 1. chapel-parse-check — chpl --parse-only on every module
	# 2. chapel-build — chpl build of mass-panic + smoke (no toolbox)
	# 3. chapel-smoke — chapel/smoke/two_repo_smoke (Chapel data flow)
	# 4. chapel-e2e — mass-panic -nl 1 on a synthetic 2-repo manifest
	# 5. chapel-cli-contract — panic-attack describe-contract vs expected fixture
	# 6. chapel-rust-diff — rayon assemblyline vs Chapel single-locale parity
	# 7. chapel-multilocale — mass-panic -nl 2 on the same synthetic 2-repo
	# corpus, against a Chapel built from source with
	# CHPL_COMM=gasnet + CHPL_LAUNCHER=smp (single-host
	# oversubscription). The source build is cached on
	# $CHPL_HOME; cold ~30-40 min, warm ~30s restore.
	# Closes the gap left by Wave 1 (issue #87).
	#
	# Plus the always-on aggregator: `chapel-ci-gate`.
	#
	# Wave 2 hardening tracker: SHA-pin the Chapel 2.8.0 .deb + source tarball
	# downloads. Today the workflow trusts the HTTPS endpoints at chapel-lang/chapel
	# releases.

	name: chapel-ci

	on:
	push:
	branches: [main]
	pull_request:

	permissions:
	contents: read

	concurrency:
	group: chapel-ci-${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	env:
	CHAPEL_VERSION: "2.8.0"
	CHAPEL_DEB_URL: "https://github.com/chapel-lang/chapel/releases/download/2.8.0/chapel-2.8.0-1.ubuntu22.amd64.deb"
	# Source tarball used by chapel-multilocale to build with CHPL_COMM=gasnet.
	CHAPEL_SRC_URL: "https://github.com/chapel-lang/chapel/releases/download/2.8.0/chapel-2.8.0.tar.gz"
	# $CHPL_HOME for the multilocale build. Cache key bumps via CHAPEL_MULTILOCALE_CACHE_GEN.
	CHAPEL_MULTILOCALE_HOME: /opt/chapel-multilocale
	CHAPEL_MULTILOCALE_CACHE_GEN: "v1"

	jobs:
	detect-relevant-changes:
	name: detect-relevant-changes
	runs-on: ubuntu-22.04
	outputs:
	relevant: ${{ steps.f.outputs.relevant }}
	steps:
	- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
	with:
	fetch-depth: 2
	- id: f
	name: Detect chapel-relevant paths
	run: \|
	set -euo pipefail
	BASE="${{ github.event.pull_request.base.sha \|\| github.event.before }}"
	if [[ -z "$BASE" \|\| "$BASE" == "0000000000000000000000000000000000000000" ]]; then
	# First push or detached state — be safe and run the full gate.
	echo "relevant=true" >> "$GITHUB_OUTPUT"
	echo "detect: BASE missing/zero — treating as relevant"
	exit 0
	fi
	git fetch origin "$BASE" --depth=1 2>/dev/null \|\| true
	CHANGED=$(git diff --name-only "$BASE" HEAD \|\| true)
	echo "Changed files:"
	echo "$CHANGED"
	if echo "$CHANGED" \| grep -qE '^(chapel/\|Justfile$\|\.github/workflows/chapel-ci\.yml$\|src/main\.rs$\|src/types\.rs$\|Cargo\.toml$\|Cargo\.lock$)'; then
	echo "relevant=true" >> "$GITHUB_OUTPUT"
	echo "detect: chapel-relevant paths changed — running gates"
	else
	echo "relevant=false" >> "$GITHUB_OUTPUT"
	echo "detect: no chapel-relevant paths — gates skipped via if-guard"
	fi

	chapel-parse-check:
	name: chapel-parse-check
	needs: detect-relevant-changes
	if: needs.detect-relevant-changes.outputs.relevant == 'true'
	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
	- name: Install Chapel ${{ env.CHAPEL_VERSION }}
	run: \|
	set -euo pipefail
	sudo apt-get update -qq
	sudo apt-get install -y libunwind-dev
	curl -fsSL --retry 3 -o /tmp/chapel.deb "${{ env.CHAPEL_DEB_URL }}"
	sudo apt-get install -y /tmp/chapel.deb
	chpl --version
	- name: Parse every Chapel module
	working-directory: chapel
	run: \|
	set -euo pipefail
	chpl --parse-only src/MassPanic.chpl src/Protocol.chpl src/Imaging.chpl src/Temporal.chpl
	chpl --parse-only smoke/two_repo_smoke.chpl src/Protocol.chpl src/Imaging.chpl

	chapel-build:
	name: chapel-build
	needs: [detect-relevant-changes, chapel-parse-check]
	if: needs.detect-relevant-changes.outputs.relevant == 'true'
	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
	- name: Install Chapel ${{ env.CHAPEL_VERSION }}
	run: \|
	set -euo pipefail
	sudo apt-get update -qq
	sudo apt-get install -y libunwind-dev
	curl -fsSL --retry 3 -o /tmp/chapel.deb "${{ env.CHAPEL_DEB_URL }}"
	sudo apt-get install -y /tmp/chapel.deb
	chpl --version
	- name: Build mass-panic + smoke (no toolbox)
	working-directory: chapel
	run: \|
	set -euo pipefail
	chpl src/MassPanic.chpl src/Protocol.chpl src/Imaging.chpl src/Temporal.chpl -o mass-panic
	chpl smoke/two_repo_smoke.chpl src/Protocol.chpl src/Imaging.chpl -o smoke/two_repo_smoke
	- name: Upload Chapel artefacts
	uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
	with:
	name: chapel-binaries
	path: \|
	chapel/mass-panic
	chapel/smoke/two_repo_smoke
	retention-days: 1

	chapel-smoke:
	name: chapel-smoke
	needs: [detect-relevant-changes, chapel-build]
	if: needs.detect-relevant-changes.outputs.relevant == 'true'
	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
	- name: Install Chapel ${{ env.CHAPEL_VERSION }}
	run: \|
	set -euo pipefail
	sudo apt-get update -qq
	sudo apt-get install -y libunwind-dev
	curl -fsSL --retry 3 -o /tmp/chapel.deb "${{ env.CHAPEL_DEB_URL }}"
	sudo apt-get install -y /tmp/chapel.deb
	- name: Download Chapel artefacts
	uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
	with:
	name: chapel-binaries
	path: chapel/
	- name: Restore exec bits
	run: chmod +x chapel/mass-panic chapel/smoke/two_repo_smoke
	- name: Run two_repo_smoke
	run: ./chapel/smoke/two_repo_smoke

	chapel-e2e:
	name: chapel-e2e
	needs: [detect-relevant-changes, chapel-build]
	if: needs.detect-relevant-changes.outputs.relevant == 'true'
	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
	- name: Install Chapel ${{ env.CHAPEL_VERSION }}
	run: \|
	set -euo pipefail
	sudo apt-get update -qq
	sudo apt-get install -y libunwind-dev
	curl -fsSL --retry 3 -o /tmp/chapel.deb "${{ env.CHAPEL_DEB_URL }}"
	sudo apt-get install -y /tmp/chapel.deb
	- name: Download Chapel artefacts
	uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
	with:
	name: chapel-binaries
	path: chapel/
	- name: Restore exec bits
	run: chmod +x chapel/mass-panic
	- name: End-to-end -nl 1 exercise
	run: \|
	set -euo pipefail
	WORK=$(mktemp -d /tmp/chapel-e2e-XXXXXX)
	trap 'rm -rf "$WORK"' EXIT
	mkdir -p "$WORK/corpus/repo-alpha/src" "$WORK/corpus/repo-beta/src"
	echo 'pub unsafe fn a() {}' > "$WORK/corpus/repo-alpha/src/lib.rs"
	echo 'pub unsafe fn b() {}' > "$WORK/corpus/repo-beta/src/lib.rs"
	for d in repo-alpha repo-beta; do
	(cd "$WORK/corpus/$d" && git init -q && git add -A && git -c user.email=ci@example.com -c user.name=ci commit -q -m init)
	done
	./chapel/mass-panic --repoDirectory="$WORK/corpus" --numLocales=1 --quiet --outputDir="$WORK/out"
	ls "$WORK/out"/system-image-*.json >/dev/null
	echo "chapel-e2e: PASS"

	chapel-cli-contract:
	name: chapel-cli-contract
	needs: detect-relevant-changes
	if: needs.detect-relevant-changes.outputs.relevant == 'true'
	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
	- uses: dtolnay/rust-toolchain@4be9e76fd7c4901c61fb841f559994984270fce7 # stable
	- uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
	with:
	path: \|
	~/.cargo/registry
	~/.cargo/git
	target
	key: ${{ runner.os }}-cargo-chapel-cli-contract-${{ hashFiles('Cargo.lock') }}
	- name: Build panic-attack
	run: cargo build --release --locked
	- name: Run contract gate
	run: ./chapel/tests/contract_check.sh

	chapel-rust-diff:
	name: chapel-rust-diff
	needs: [detect-relevant-changes, chapel-build]
	if: needs.detect-relevant-changes.outputs.relevant == 'true'
	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
	- uses: dtolnay/rust-toolchain@4be9e76fd7c4901c61fb841f559994984270fce7 # stable
	- uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
	with:
	path: \|
	~/.cargo/registry
	~/.cargo/git
	target
	key: ${{ runner.os }}-cargo-chapel-rust-diff-${{ hashFiles('Cargo.lock') }}
	- name: Install Chapel ${{ env.CHAPEL_VERSION }}
	run: \|
	set -euo pipefail
	sudo apt-get update -qq
	sudo apt-get install -y libunwind-dev
	curl -fsSL --retry 3 -o /tmp/chapel.deb "${{ env.CHAPEL_DEB_URL }}"
	sudo apt-get install -y /tmp/chapel.deb
	- name: Download Chapel artefacts
	uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
	with:
	name: chapel-binaries
	path: chapel/
	- name: Restore exec bits
	run: chmod +x chapel/mass-panic
	- name: Build panic-attack
	run: cargo build --release --locked
	- name: rayon vs Chapel single-locale aggregate parity
	run: ./chapel/tests/rayon_vs_chapel_diff.sh

	chapel-multilocale:
	name: chapel-multilocale
	needs: detect-relevant-changes
	if: needs.detect-relevant-changes.outputs.relevant == 'true'
	runs-on: ubuntu-22.04
	timeout-minutes: 75
	env:
	CHPL_HOME: /opt/chapel-multilocale
	steps:
	- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

	# Cache the entire built-from-source Chapel tree. Key is stable across
	# PRs as long as the version, conduit, launcher and cache-gen marker
	# don't change. Cold build is ~30-40 min on a 2-core runner; warm
	# restore is ~30s.
	- name: Cache multilocale Chapel ($CHPL_HOME)
	id: chapel-cache
	uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
	with:
	path: ${{ env.CHAPEL_MULTILOCALE_HOME }}
	key: ${{ runner.os }}-chapel-multilocale-${{ env.CHAPEL_VERSION }}-gasnet-smp-${{ env.CHAPEL_MULTILOCALE_CACHE_GEN }}

	- name: Install Chapel build dependencies
	if: steps.chapel-cache.outputs.cache-hit != 'true'
	run: \|
	set -euo pipefail
	sudo apt-get update -qq
	sudo apt-get install -y --no-install-recommends \
	build-essential gcc g++ make perl python3 \
	m4 autoconf automake libtool libunwind-dev pkg-config

	- name: Build Chapel from source with CHPL_COMM=gasnet
	if: steps.chapel-cache.outputs.cache-hit != 'true'
	run: \|
	set -euo pipefail
	curl -fsSL --retry 3 -o /tmp/chapel-src.tar.gz "${{ env.CHAPEL_SRC_URL }}"
	sudo mkdir -p /opt
	sudo tar -xzf /tmp/chapel-src.tar.gz -C /opt
	sudo mv "/opt/chapel-${{ env.CHAPEL_VERSION }}" "${{ env.CHAPEL_MULTILOCALE_HOME }}"
	sudo chown -R "$(id -u):$(id -g)" "${{ env.CHAPEL_MULTILOCALE_HOME }}"
	cd "${{ env.CHAPEL_MULTILOCALE_HOME }}"
	# Configure for single-host oversubscribed multilocale:
	# CHPL_COMM=gasnet — multilocale communication layer
	# CHPL_COMM_SUBSTRATE=smp — shared-memory substrate (no NIC needed)
	# CHPL_LAUNCHER=smp — spawn locales as local processes
	export CHPL_HOME="${{ env.CHAPEL_MULTILOCALE_HOME }}"
	export CHPL_COMM=gasnet
	export CHPL_COMM_SUBSTRATE=smp
	export CHPL_LAUNCHER=smp
	export CHPL_TARGET_COMPILER=gnu
	# setchplenv.bash references ${MANPATH} unconditionally; GH runners
	# don't export MANPATH by default, so seed it before sourcing.
	export MANPATH="${MANPATH:-}"
	source util/setchplenv.bash
	# Build chpl + runtime + GASNet+smp substrate
	make -j"$(nproc)"
	# Sanity: confirm we have a multilocale chpl
	./bin/*/chpl --about \| grep -E 'CHPL_COMM:\s+gasnet'

	- name: Activate multilocale Chapel
	id: activate
	run: \|
	set -euo pipefail
	export CHPL_HOME="${{ env.CHAPEL_MULTILOCALE_HOME }}"
	export MANPATH="${MANPATH:-}"
	source "$CHPL_HOME/util/setchplenv.bash"
	# Persist env to subsequent steps via GITHUB_ENV
	{
	echo "CHPL_HOME=$CHPL_HOME"
	echo "CHPL_COMM=gasnet"
	echo "CHPL_COMM_SUBSTRATE=smp"
	echo "CHPL_LAUNCHER=smp"
	echo "CHPL_TARGET_COMPILER=gnu"
	echo "PATH=$CHPL_HOME/bin/$(uname -s)-$(uname -m):$PATH"
	} >> "$GITHUB_ENV"
	chpl --version
	chpl --about \| grep CHPL_COMM

	- name: Build mass-panic against multilocale Chapel
	working-directory: chapel
	run: \|
	set -euo pipefail
	chpl src/MassPanic.chpl src/Protocol.chpl src/Imaging.chpl src/Temporal.chpl -o mass-panic

	- name: End-to-end -nl 2 exercise (oversubscribed locales on single runner)
	run: \|
	set -euo pipefail
	WORK=$(mktemp -d /tmp/chapel-multilocale-XXXXXX)
	trap 'rm -rf "$WORK"' EXIT
	mkdir -p "$WORK/corpus/repo-alpha/src" "$WORK/corpus/repo-beta/src"
	echo 'pub unsafe fn a() {}' > "$WORK/corpus/repo-alpha/src/lib.rs"
	echo 'pub unsafe fn b() {}' > "$WORK/corpus/repo-beta/src/lib.rs"
	for d in repo-alpha repo-beta; do
	(cd "$WORK/corpus/$d" && git init -q && git add -A && git -c user.email=ci@example.com -c user.name=ci commit -q -m init)
	done
	# The smp launcher spawns N processes on the local host. -nl 2 is
	# the minimum non-trivial multilocale exercise; oversubscription
	# is fine for verification (latency, not throughput, matters here).
	./chapel/mass-panic \
	--repoDirectory="$WORK/corpus" \
	--numLocales=2 \
	--quiet \
	--outputDir="$WORK/out"
	# Two-locale run produced a system image
	ls "$WORK/out"/system-image-*.json >/dev/null
	# And that image references both repos (cross-locale aggregation)
	grep -q 'repo-alpha' "$WORK/out"/system-image-*.json
	grep -q 'repo-beta' "$WORK/out"/system-image-*.json
	echo "chapel-multilocale: PASS (-nl 2, gasnet+smp)"

	# Always-on aggregator. This is the ONLY job listed in the Base ruleset's
	# required_status_checks rule. If detect-relevant-changes determined nothing
	# in this PR touches Chapel-relevant paths, the gate passes immediately
	# (the seven per-task jobs above skip via their `if:` guard). If a relevant
	# change is present, the gate inspects each job's result and only passes
	# when ALL seven succeeded.
	chapel-ci-gate:
	name: chapel-ci-gate
	needs:
	- detect-relevant-changes
	- chapel-parse-check
	- chapel-build
	- chapel-smoke
	- chapel-e2e
	- chapel-cli-contract
	- chapel-rust-diff
	- chapel-multilocale
	if: always()
	runs-on: ubuntu-22.04
	steps:
	- name: Aggregate chapel-ci results
	env:
	RELEVANT: ${{ needs.detect-relevant-changes.outputs.relevant }}
	R_PARSE: ${{ needs.chapel-parse-check.result }}
	R_BUILD: ${{ needs.chapel-build.result }}
	R_SMOKE: ${{ needs.chapel-smoke.result }}
	R_E2E: ${{ needs.chapel-e2e.result }}
	R_CLI: ${{ needs.chapel-cli-contract.result }}
	R_DIFF: ${{ needs.chapel-rust-diff.result }}
	R_MULTILOCALE: ${{ needs.chapel-multilocale.result }}
	run: \|
	set -euo pipefail
	echo "detect-relevant-changes.outputs.relevant=$RELEVANT"
	printf 'parse-check=%s\nbuild=%s\nsmoke=%s\ne2e=%s\ncli-contract=%s\nrust-diff=%s\nmultilocale=%s\n' \
	"$R_PARSE" "$R_BUILD" "$R_SMOKE" "$R_E2E" "$R_CLI" "$R_DIFF" "$R_MULTILOCALE"
	if [[ "$RELEVANT" != "true" ]]; then
	echo "chapel-ci-gate: SKIP (no chapel-relevant paths changed) → PASS"
	exit 0
	fi
	# If detect itself failed, we never confirmed relevance — fail safe.
	if [[ "${{ needs.detect-relevant-changes.result }}" != "success" ]]; then
	echo "chapel-ci-gate: detect-relevant-changes did not succeed → FAIL"
	exit 1
	fi
	fail=0
	for r in "$R_PARSE" "$R_BUILD" "$R_SMOKE" "$R_E2E" "$R_CLI" "$R_DIFF" "$R_MULTILOCALE"; do
	case "$r" in
	success) ;;
	*) fail=$((fail + 1)) ;;
	esac
	done
	if [[ $fail -gt 0 ]]; then
	echo "chapel-ci-gate: $fail dependent job(s) did not succeed → FAIL"
	exit 1
	fi
	echo "chapel-ci-gate: all seven gates green → PASS"

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feat(chapel): Wave 2 — chapel-multilocale gate (-nl 2 via gasnet+smp, #87 option A) #39

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feat(chapel): Wave 2 — chapel-multilocale gate (-nl 2 via gasnet+smp, #87 option A) #39

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Workflow file for this run