# Mixed Precision Training Deep Dive: BF16, FP16, FP8, autocast, GradScaler — Production Patterns

> Source: https://sukruyusufkaya.com/en/learn/llm-muhendisligi/mixed-precision-bf16-fp16-fp8-autocast
> Updated: 2026-05-13T13:00:25.352Z
> Category: LLM Mühendisliği
> Module: Module 5: PyTorch Engineering — Engineer-Grade
**TLDR:** Module 1.9 covered numerical stability fundamentals. This lesson dives into production mixed precision: autocast region design, GradScaler dynamics, FP8 H100/B200 native training (DeepSeek-V3 method), gradient norm monitoring, loss spike investigation, BF16 vs FP16 production decision matrix.