benchmarks.yml

# Run performance benchmarks
#
# Continuous benchmarking using pytest-codspeed. Measures the execution speed
# of tests marked with @pytest.mark.benchmark decorator.

name: Benchmarks

on:
  # Run on pushes to the main branch
  push:
    branches: [ main ]
    paths:
      - 'pygmt/**/*.py'
      - '!pygmt/tests/**'
      - '.github/workflows/benchmarks.yml'
  pull_request:
    paths:
      - 'pygmt/**/*.py'
      - '!pygmt/tests/**'
      - '.github/workflows/benchmarks.yml'
  # `workflow_dispatch` allows CodSpeed to trigger backtest
  # performance analysis in order to generate initial data.
  workflow_dispatch:
  release:
    types:
      - published

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}

jobs:
  benchmarks:
    runs-on: ubuntu-22.04
    defaults:
      run:
        shell: bash -l {0}

    steps:
      # Checkout current git repository
      - name: Checkout
        uses: actions/checkout@v4.1.1
        with:
          # fetch all history so that setuptools-scm works
          fetch-depth: 0

      # Install Miniconda with conda-forge dependencies
      - name: Setup Miniconda
        uses: conda-incubator/setup-miniconda@v3.0.1
        with:
          auto-activate-base: true
          activate-environment: ""  # base environment
          channels: conda-forge,nodefaults
          channel-priority: strict

      # Install GMT and dependencies from conda-forge
      - name: Install dependencies
        run: |
          # $CONDA is an environment variable pointing to the root of the miniconda directory
          # Preprend $CONDA/bin to $PATH so that conda's python is used over system python
          echo $CONDA/bin >> $GITHUB_PATH
          conda install --solver=libmamba gmt=6.4.0 python=3.12 \
                        numpy pandas xarray netCDF4 packaging \
                        geopandas pytest pytest-benchmark pytest-mpl
          python -m pip install -U pytest-codspeed setuptools

      # Install the package that we want to test
      - name: Install the package
        run: make install

      # Run the benchmark tests
      - name: Run benchmarks
        uses: CodSpeedHQ/action@v2.0.2
        with:
          run: |
            python -c "import pygmt; pygmt.show_versions()"
            PYGMT_USE_EXTERNAL_DISPLAY="false" python -m pytest -r P --pyargs pygmt --codspeed
        env:
          GMT_LIBRARY_PATH: /usr/share/miniconda/lib/