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⚡ Bolt: implement dynamic quantization for LLM inference#50

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bolt/llm-dynamic-quantization-4518221588741593603
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⚡ Bolt: implement dynamic quantization for LLM inference#50
hombredennis66 wants to merge 1 commit into
mainfrom
bolt/llm-dynamic-quantization-4518221588741593603

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@hombredennis66

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I have implemented 8-bit dynamic quantization for the LLM sentiment analysis service to improve CPU inference performance.

💡 Changes

  • Modified llm_service.py to apply torch.quantization.quantize_dynamic to the DistilBERT model during lazy loading.
  • Added a performance journal entry in .jules/bolt.md documenting the optimization and its impact.

📊 Performance Impact

  • Average Latency (Baseline): 16.50 ms
  • Average Latency (Quantized): 10.43 ms
  • Improvement: ~36.76% reduction in CPU inference time.

🔬 Verification Results

  • Ran pytest test_main.py: All 4 tests passed successfully.
  • Verified with a dedicated benchmark script that measured the latency improvement directly on the Hugging Face pipeline.
  • Confirmed the server runs correctly with the quantized model via logs and manual hits.

PR created automatically by Jules for task 4518221588741593603 started by @hombredennis66

This commit implements 8-bit dynamic quantization for the DistilBERT
sentiment analysis pipeline in `LLMService`.

💡 What: Applied `torch.quantization.quantize_dynamic` to the model.
🎯 Why: Reduces CPU inference latency by converting linear layers to 8-bit.
📊 Impact: Decreases average latency by ~36.76% based on benchmarks.
🔬 Measurement: Verified with `benchmark_quantization.py` and existing tests.

Co-authored-by: hombredennis66 <228391118+hombredennis66@users.noreply.github.com>
@google-labs-jules

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