Insights from the Andrej Karpathy episode “Let's reproduce GPT-2 (124M)”, published June 9, 2024.
Andrej Karpathy demonstrates how to reproduce the 124M parameter GPT-2 model from scratch using PyTorch. By bypassing complex legacy code in favor of a clean, modular implementation, he reveals how modern hardware optimizations like torch.compile and BFloat16 can slash training times and costs to roughly $10 per run.
Topics: GPT-2, PyTorch, LLM Training, Machine Learning, Karpathy
