AI/ML Workflows with GitHub Actions
1. Introduction
GitHub Actions provides a powerful way to automate workflows directly from your GitHub repository. In the context of AI/ML workflows, it allows developers to streamline their CI/CD processes, facilitate model training, and deployment, and ensure reproducibility.
2. Key Concepts
2.1 Workflows
A workflow is a configurable automated process made up of one or more jobs. It’s defined in a YAML file located in the `.github/workflows` directory.
2.2 Jobs
Jobs are individual tasks that are executed as part of a workflow. Each job runs in a fresh instance of a virtual environment.
2.3 Actions
Actions are the smallest building blocks of a workflow. They can be custom or third-party actions and encapsulate a piece of functionality.
3. Workflow Steps
3.1 Define the Workflow
Create a new file named `ml-workflow.yml` in the `.github/workflows` directory.
3.2 Set Up the Trigger
Use triggers like `push` or `pull_request` to start the workflow.
3.3 Define Jobs and Steps
Each job can have multiple steps, and you can define them as follows:
jobs:
build:
runs-on: ubuntu-latest
steps:
- name: Checkout code
uses: actions/checkout@v2
- name: Set up Python
uses: actions/setup-python@v2
with:
python-version: '3.8'
- name: Install dependencies
run: |
pip install -r requirements.txt
- name: Run training
run: |
python train.py
- name: Deploy model
run: |
python deploy.py
3.4 Monitor Workflow
Monitor the execution of your workflow through the Actions tab in your GitHub repository.
4. Code Example
4.1 Sample YAML Workflow
name: CI for ML Models
on:
push:
branches:
- main
jobs:
train:
runs-on: ubuntu-latest
steps:
- name: Checkout code
uses: actions/checkout@v2
- name: Set up Python
uses: actions/setup-python@v2
with:
python-version: '3.8'
- name: Install Dependencies
run: |
pip install -r requirements.txt
- name: Run Training
run: |
python train.py
- name: Run Tests
run: |
pytest tests/
5. Best Practices
- Use caching to speed up dependencies installation.
- Separate workflows for training and deployment.
- Use environment variables to manage secrets.
- Document your workflows for better maintainability.
6. FAQ
What are GitHub Actions?
GitHub Actions is a CI/CD feature that allows you to automate workflows directly in your GitHub repository.
How do I trigger a workflow?
You can trigger workflows on specific GitHub events like push, pull requests, and others defined in the on
section of your YAML file.
Can I use third-party actions?
Yes, you can use both custom and third-party actions available in the GitHub Marketplace.