🔧 Postmortem: How a Quantization Error in Llama 3.2 7B Caused Incorrect Code Suggestions for 500 Users

On October 12, 2024, 500 developers lost 14 collective hours to incorrect Python and JavaScript code suggestions traced to a silent 8-bit quantization error in the Llama 3.2 7B instruction-tuned model deployed to our internal coding assistant. We didn’t catch it in staging. Here’s how the math broke, the benchmarks that exposed it, and the fix...