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Add a post-deploy test specific to TPUs#4969

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agrawalkhushi18 merged 1 commit intoGoogleCloudPlatform:developfrom
agrawalkhushi18:test-gke-tpu
Dec 10, 2025
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Add a post-deploy test specific to TPUs#4969
agrawalkhushi18 merged 1 commit intoGoogleCloudPlatform:developfrom
agrawalkhushi18:test-gke-tpu

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@agrawalkhushi18 agrawalkhushi18 commented Dec 9, 2025

This PR adds the new test-gke-tpu.yml workflow, intended to run as a post-deployment test. It verifies and outputs the pod logs for the JAX device count.
These changes address a follow-up action from PR #4906.

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@agrawalkhushi18 agrawalkhushi18 added the release-improvements Added to release notes under the "Improvements" heading. label Dec 9, 2025
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gemini-code-assist bot commented Dec 9, 2025

Summary of Changes

Hello @agrawalkhushi18, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a dedicated post-deployment test for Google Kubernetes Engine (GKE) environments utilizing Tensor Processing Units (TPUs). The primary goal is to automatically validate that JAX applications deployed on these clusters correctly identify and report the expected number of TPU cores. This enhancement improves the reliability of TPU deployments by providing automated verification and robust debugging capabilities in case of issues.

Highlights

  • New Post-Deployment Test: A new Ansible playbook, test-gke-tpu.yml, has been added to perform post-deployment validation specifically for GKE TPU environments.
  • TPU Core Verification: The new test verifies the JAX device count from pod logs against an expected TPU core count, ensuring the correct number of TPUs are detected after deployment.
  • Warning Suppression: The gke-tpu-v6e.yaml build configuration now includes a step to suppress warnings when importing JAX, preventing potential test failures due to non-critical messages.
  • Test Integration: The gke-tpu-v6e.yml test configuration has been updated to include the new TPU-specific post-deploy test and define the expected_tpu_count variable.
  • Robust Failure Handling: The new test includes a comprehensive rescue block to capture detailed debug information (pod status, job descriptions, pod logs) in case of job completion failure or verification issues.
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Code Review

This pull request introduces a new post-deployment test for GKE TPUs, which involves a new Ansible playbook and updates to the build and test configurations. The changes are logical and address the goal of verifying the JAX device count. My review focuses on improving the robustness of the new Ansible playbook (test-gke-tpu.yml) by making the job and pod selection more specific. The current implementation has a risk of selecting incorrect resources if multiple jobs are present, which could lead to flaky tests. The suggested changes will make the tests more reliable.

@agrawalkhushi18 agrawalkhushi18 added the release-key-new-features Added to release notes under the "Key New Features" heading. label Dec 9, 2025
@agrawalkhushi18 agrawalkhushi18 force-pushed the test-gke-tpu branch 2 times, most recently from 72c344c to c05a06f Compare December 10, 2025 06:01
@agrawalkhushi18 agrawalkhushi18 marked this pull request as ready for review December 10, 2025 06:02
@agrawalkhushi18 agrawalkhushi18 requested review from a team and samskillman as code owners December 10, 2025 06:02
@agrawalkhushi18 agrawalkhushi18 force-pushed the test-gke-tpu branch 2 times, most recently from b4e834b to e683137 Compare December 10, 2025 06:26
SwarnaBharathiMantena
SwarnaBharathiMantena previously approved these changes Dec 10, 2025
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LGTM

@agrawalkhushi18 agrawalkhushi18 force-pushed the test-gke-tpu branch 2 times, most recently from b0faeb6 to e3de76d Compare December 10, 2025 08:05
@agrawalkhushi18 agrawalkhushi18 merged commit 5da389b into GoogleCloudPlatform:develop Dec 10, 2025
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agrawalkhushi18 commented Dec 10, 2025

The PR tests for gke-tpu-v6e and gke-tpu-7x passed successfully.

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@SwarnaBharathiMantena SwarnaBharathiMantena SwarnaBharathiMantena approved these changes

@shubpal07 shubpal07 Awaiting requested review from shubpal07

@samskillman samskillman Awaiting requested review from samskillman samskillman is a code owner

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release-improvements Added to release notes under the "Improvements" heading. release-key-new-features Added to release notes under the "Key New Features" heading.

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