CI: Measure complete PR workflow timing

[vyasr]

Description

Temporary comment-only markers that intentionally exercise every path-filtered PR job. This draft PR exists solely to collect a current complete-workflow timing baseline; it has no functional effect.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[copy-pr-bot]

This pull request requires additional validation before any workflows can run on NVIDIA's runners.

Pull request vetters can view their responsibilities here.

Contributors can view more details about this message here.

[vyasr]

/ok to test

[copy-pr-bot]

/ok to test

@vyasr, there was an error processing your request: E1

See the following link for more information: https://docs.gha-runners.nvidia.com/cpr/e/1/

[vyasr]

/ok to test

[copy-pr-bot]

/ok to test

@vyasr, there was an error processing your request: E1

See the following link for more information: https://docs.gha-runners.nvidia.com/cpr/e/1/

[vyasr]

/ok to test

[copy-pr-bot]

/ok to test

@vyasr, there was an error processing your request: E1

See the following link for more information: https://docs.gha-runners.nvidia.com/cpr/e/1/

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: 394c30d9-4336-4a8d-b81d-d280a70b1d69

📥 Commits

Reviewing files that changed from the base of the PR and between c6af384 and d8b3714.

📒 Files selected for processing (1)

• .github/workflows/pr.yaml

Included review availability: Your plan provides up to 12 included reviews per hour; 10 remain after this review.

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📝 Summary

Summary by CodeRabbit

• Chores
  • Streamlined pull-request validation by running only the affected C++ and Python test subsets.
  • Added independent controls for selected test suites, allowing unaffected suites to be skipped.
  • Expanded Pandas test execution from two shards to three, improving parallel coverage and reducing per-shard workload.

Walkthrough

The PR workflow maps changed files to component-specific C++ and Python test suites. Test scripts use environment flags to skip unaffected suites. Pandas tests use three shards, and temporary timing markers were added.

Changes

Component-specific test selection

Layer / File(s)	Summary
Route changed files to test suites .github/workflows/pr.yaml	The workflow defines separate C++ and Python component groups. Test jobs pass matching RUN_*_TESTS flags to the test scripts.
Conditionally execute test suites ci/test_cpp.sh, ci/test_python_other.sh	C++ and Python test suites default to enabled and run only when their corresponding flags are true. C++ suites retain prior-success gating.
Update timing markers and Pandas sharding .github/workflows/pr.yaml, cpp/CMakeLists.txt, python/cudf/cudf/pandas/__init__.py, python/dask_cudf/README.md	Temporary no-op markers were added. The SPDX header spacing was adjusted. Pandas test sharding increased from two shards to three.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk: ⚪ Minimal · up to d8b37

This change adds CI timing markers, splits CI test selection by component, and increases Pandas test sharding to three. No concrete merge-blocking risk is identified in the supplied current-head evidence.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the CI workflow timing measurement, which matches the primary purpose of the changes.
Description check	✅ Passed	The description accurately explains that temporary markers exercise path-filtered PR jobs to measure a complete workflow timing baseline without functional changes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 3…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[vyasr]

/ok to test 5a3d137

[vyasr]

/ok to test 5bb3d3a

[vyasr]

/ok to test c6af384

[vyasr]

/ok to test c6af384

[vyasr]

/ok to test d8b3714

[vyasr]

/ok to test 9393024

[vyasr]

/ok to test 9393024