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Run Tests Against Tunix Package workflow (google/tunix)

The Run Tests Against Tunix Package workflow from google/tunix, explained and optimized by Latchkey.

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Source: google/tunix.github/workflows/cpu-tests.ymlLicense Apache-2.0View source

What it does

This is the Run Tests Against Tunix Package workflow from the google/tunix repository, a real project running GitHub Actions. It is shown here with attribution under its Apache-2.0 license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

workflow (.yml)

# Copyright 2025 Google LLC

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at

#     https://www.apache.org/licenses/LICENSE-2.0

# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# This file defines a module for running tests against the built tunix package.

name: Run Tests Against Tunix Package

on:
  workflow_call:

permissions:
  contents: read
jobs:
  run:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v4
        with:
          python-version: '3.11'

      - name: Download the tunix wheel
        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
        with:
          name: tunix-wheel

      - name: Install the tunix wheel
        run: |
          python -m pip install --upgrade pip
          WHEEL=$(ls -1 google_tunix-*-py3-none-any.whl | head -n1)
          python -m pip install "${WHEEL}[prod,test]"

      - name: Verify Tunix imports from installed package
        run: |
          python3 -c "
          import tunix
          import tunix.models
          import tunix.generate
          import tunix.sft
          import tunix.distillation
          import tunix.rl

          assert tunix.__version__ != '0.0.0.dev0', 'Tunix version not set correctly'
          print('All tunix modules imported successfully and version is', tunix.__version__)
          "
      - name: Run agentic RL tests
        run: |
          python -m pytest tests/rl/agentic/ -v --tb=short

      - name: Run Cli utils tests
        run: |
          python -m pytest tests/cli/utils/ -v --tb=short

      - name: Run shared mesh and topology tests
        run: |
          python -m pytest tests/utils/mesh_test.py tests/utils/topology_test.py -v --tb=short

      - name: Run perf tests
        run: |
          python -m pytest tests/perf/ -v --tb=short

      - name: Run model registry tests
        run: |
          python -m pytest tests/models/registry_test.py -v --tb=short

      - name: Run CPU-only flash attention cache regression test
        run: |
          python -m pytest tests/models/flash_attention_cache_test.py -v --tb=short

The same workflow, on Latchkey

Estimated ~20% faster on cache hits, plus fewer wasted runs and a safer supply chain. Added and changed lines are highlighted.

 
# Copyright 2025 Google LLC
 
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
 
#     https://www.apache.org/licenses/LICENSE-2.0
 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
 
# This file defines a module for running tests against the built tunix package.
 
name: Run Tests Against Tunix Package
 
on:
  workflow_call:
 
permissions:
  contents: read
jobs:
  run:
    timeout-minutes: 30
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v4
        with:
          cache: 'pip'
          python-version: '3.11'
 
      - name: Download the tunix wheel
        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
        with:
          name: tunix-wheel
 
      - name: Install the tunix wheel
        run: |
          python -m pip install --upgrade pip
          WHEEL=$(ls -1 google_tunix-*-py3-none-any.whl | head -n1)
          python -m pip install "${WHEEL}[prod,test]"
 
      - name: Verify Tunix imports from installed package
        run: |
          python3 -c "
          import tunix
          import tunix.models
          import tunix.generate
          import tunix.sft
          import tunix.distillation
          import tunix.rl
 
          assert tunix.__version__ != '0.0.0.dev0', 'Tunix version not set correctly'
          print('All tunix modules imported successfully and version is', tunix.__version__)
          "
      - name: Run agentic RL tests
        run: |
          python -m pytest tests/rl/agentic/ -v --tb=short
 
      - name: Run Cli utils tests
        run: |
          python -m pytest tests/cli/utils/ -v --tb=short
 
      - name: Run shared mesh and topology tests
        run: |
          python -m pytest tests/utils/mesh_test.py tests/utils/topology_test.py -v --tb=short
 
      - name: Run perf tests
        run: |
          python -m pytest tests/perf/ -v --tb=short
 
      - name: Run model registry tests
        run: |
          python -m pytest tests/models/registry_test.py -v --tb=short
 
      - name: Run CPU-only flash attention cache regression test
        run: |
          python -m pytest tests/models/flash_attention_cache_test.py -v --tb=short
 

What changed

What Latchkey heals here

This workflow has steps that commonly fail on transient issues (network, registries, flaky browsers). On Latchkey managed runners they are detected, retried, and self-healed instead of failing your build:

This workflow runs 1 job per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow