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wdconinc merged 5 commits into from
Aug 31, 2026
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Vaishnavi GSoC 2026 blog Updates #1966

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GSoC 2026 Final Blog Post by Vaishnavi Mishra changes
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14 changes: 10 additions & 4 deletions ...gs/2026/blog_GenerativeAI_Assisted_Testing_of_Spack_Packages_VaishnaviMishra.md
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Expand Up @@ -2,7 +2,7 @@
project: HSF
title: "Generative-AI Assisted Testing of Complex Spack Packages"
author: Vaishnavi Mishra
photo: blog_authors/VaishnaviMishra.jpg
photo: blog_authors/VaishnaviMishra.jpeg
avatar: https://avatars.githubusercontent.com/VaishnaviOnPC
date: 2026-08-25
year: 2026
Expand Down Expand Up @@ -40,8 +40,14 @@ In addition to the core components, the extension also includes:
* **Decoupled HPC Workflows:** Supports offline compute nodes by generating specs on login nodes (``--plan-only``) and executing them offline in batch jobs like Slurm (``--execute-queued``).

## Implementation Highlights (Code & Documentation)
* **AI-Test Extension Repository:** [VaishnaviOnPC/spack-ai-test](https://github.com/VaishnaviOnPC/spack-ai-test)
* **Official Documentation:** [spack-ai-test Documentation](https://VaishnaviOnPC.github.io/spack-ai-test/)
* **AI-Test Extension Repository:** [spack-ai/spack-ai-test](https://github.com/spack-ai/spack-ai-test)
* **Official Documentation:** [spack-ai-test Documentation](https://spack-ai.github.io/spack-ai-test/)

## Validation on the Grex Cluster
To validate the extension, we deployed it on the CCDB/Grex HPC cluster to evaluate 13 E4S packages. The bisector significantly reduces the time required to find the boundary of a failure. For example, it isolated a bug fix in `netcdf-c` (broken in 4.9.0, fixed in 4.9.2) in just 5 builds (compared to a naive 11-build sequential search).

![Bisection Efficiency](https://gist.githubusercontent.com/VaishnaviOnPC/b7bc39f47fa2f262344a46844900088a/raw/bisection_efficiency.png)
*Figure: Bisection efficiency across 205 runs, providing an average 4 times reduction in required builds compared to a naive linear search.*

## Current State & What's Left to Do
The extension is fully functional and successfully integrates into existing Spack installations. The core MAPE-K loop, LLM integration, and bisection logic are operational.
Expand All @@ -63,4 +69,4 @@ The design of the MAPE-K loop and generative testing pipeline was inspired by re
---

## Acknowledgements
Thank you to my mentor, Wouter Deconinck, for the guidance throughout this project. I am also very grateful to CERN, HSF and Spack for this opportunity.
Thank you to my mentor, Wouter Deconinck, for the guidance throughout this project. I am also very grateful to CERN, HSF and Spack for this opportunity.