On Spot A4

[LAVEEN]

Add daily test for A4 GPU Slurm clusters with on-spot VMs

This changelist introduces a new automated daily test to the Cloud Build pipeline. The test validates the deployment and functionality of Slurm clusters configured with A4 Ultra GPUs on on-spot (preemptible) virtual machines.

The purpose of this test is to ensure the reliability of cost-optimized GPU deployments in the HPC Toolkit by regularly verifying the integration of these components.

The new test includes post-deployment validation for the Slurm cluster, covering:

• GPU partitions
• File system mounts
• Enroot setup
• Default partition configuration

Submission Checklist

NOTE: Community submissions can take up to 2 weeks to be reviewed.

Please take the following actions before submitting this pull request.

• Fork your PR branch from the Toolkit "develop" branch (not main)
• Test all changes with pre-commit in a local branch #
• Confirm that "make tests" passes all tests
• Add or modify unit tests to cover code changes
• Ensure that unit test coverage remains above 80%
• Update all applicable documentation
• Follow Cluster Toolkit Contribution guidelines #

[gemini-code-assist]

Summary of Changes

Hello @LAVEEN, 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 new automated daily test within the Cloud Build pipeline. The primary purpose of this test is to validate the successful deployment and functionality of Slurm clusters configured with A4 Ultra GPUs, specifically utilizing on-spot (preemptible) virtual machines. This ensures that the HPC Toolkit's capabilities for cost-optimized GPU deployments remain robust and reliable by regularly checking the integration of these components.

Highlights

• New Daily Test: Introduces a new daily Cloud Build test specifically designed for A4 GPU Slurm clusters.
• On-Spot VM Validation: The new test focuses on validating the deployment and functionality of A4 GPU clusters utilizing on-spot (preemptible) virtual machines, ensuring cost-optimized deployments work as expected.
• Slurm Integration and Validation: The test includes comprehensive post-deployment validation steps for the Slurm cluster, covering GPU partitions, file system mounts, Enroot setup, and default partition configuration.

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[gemini-code-assist]

Code Review

This pull request adds a new daily integration test for A4 GPUs with Slurm using Spot VMs. The changes introduce new Cloud Build and Ansible configuration files. My review has identified several critical configuration issues that will likely cause the test to fail. These issues seem to stem from copying an existing test configuration without fully updating all variables for the new environment (e.g., partition names, blueprint variables). I have also pointed out several naming inconsistencies that impact code clarity and maintainability. Addressing these comments will ensure the new test is correct, reliable, and easier to maintain.