⚡ Concurrent download of optional files

[ysdede]

💡 What: Modified src/hub.js to fetch optional model files concurrently using Promise.all instead of sequentially awaiting them in a for...of loop.

🎯 Why: Optional model components (like external .data weight blobs) are independent of each other. Fetching them sequentially unnecessarily increases the total wall-clock time required to load the model over the network.

📊 Measured Improvement: In a benchmark script targeting a standard repository (like nvidia/parakeet-tdt-1.1b) that resolves multiple optional .data files:

• Baseline: ~609ms to sequentially complete fetches for the optional files.
• Improved: ~508ms to concurrently start and complete fetches for the optional files.
• Change: Approximately ~16% speedup (~100ms improvement) in the optional download phase due to parallel network requests.

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PR created automatically by Jules for task 14301874951111185439 started by @ysdede

Summary by Sourcery

Enhancements:

• Download optional external data files in parallel to reduce overall Parakeet model load time.

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ℹ️ Review info

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📥 Commits

Reviewing files that changed from the base of the PR and between da00dbd and 03ac149.

📒 Files selected for processing (1)

• src/hub.js

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch perf-concurrent-optional-files-14301874951111185439

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[gemini-code-assist]

Summary of Changes

Hello, 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 significantly enhances the model loading process by optimizing the download of optional external data files. By transitioning from sequential to concurrent fetching using Promise.all, the system can now retrieve independent model components in parallel, leading to a noticeable reduction in overall load times and a more efficient user experience.

Highlights

• Concurrent Downloads: Changed src/hub.js to use Promise.all for fetching optional model files, enabling parallel downloads instead of sequential processing.
• Performance Improvement: Achieved approximately a 16% speedup (around 100ms) in the optional download phase by parallelizing network requests for independent model components.

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[gemini-code-assist]

Code Review

This pull request introduces a performance improvement by changing the download of optional model files from sequential to concurrent. The use of Promise.all with optionalFiles.map is well-implemented. The error handling within each asynchronous operation is correct, ensuring that a single failed download does not affect the others. This change should effectively reduce the wall-clock time for loading models with optional files, as described in the pull request.