CI/CD Guide

What it does

Provides a concise, actionable CI/CD reference for contributors and maintainers of Megatron-LM. It documents the main workflow files, how pipeline scope is determined by PR labels, where images are published, how to trigger internal GitLab CI, and pragmatic steps to investigate failing CI runs. Concrete commands and decision rules are included so maintainers can reproduce triggers and read logs.

When to use it

Use this skill when you need to: diagnose failing CI jobs, decide which PR labels to attach to get the correct test scope, trigger internal CI without using the web UI, or understand how CI maps to pipeline stages (linting, container build, unit and integration tests). Trigger phrases: 'CI is red', 'how do I trigger CI', 'PR labels', 'where are the logs', 'pull-request branch'.

What's included

• Scripts: none bundled alongside the SKILL.md (documentation references existing tools in the repo).
• References: procedural notes and example gh/gh-run commands for inspecting runs and artifacts.
• Instructions: decision tree for PR scope labels, commands to extract PR metadata, and step-by-step CI failure investigation checklist.

Compatible agents

Best used by agents with GitHub CLI and repo inspection capabilities (e.g., GitHub-capable agents, Copilot/Code assistants that can run gh commands).