LLM Fundamentals
Advanced
Signal 98/100
Let's reproduce GPT-2 (124M)
by Andrej Karpathy
Teaches AI agents to
Pre-train a GPT-2 scale language model with modern optimizations
Key Takeaways
- Reproduces GPT-2 (124M parameters) from scratch
- Covers distributed training across multiple GPUs
- Implements FlashAttention and other optimizations
- Achieves competitive performance on benchmarks
- End-to-end production LLM training walkthrough
Full Training Script
# AI Training Script: Let's reproduce GPT-2 (124M) ## Overview • Reproduces GPT-2 (124M parameters) from scratch • Covers distributed training across multiple GPUs • Implements FlashAttention and other optimizations • Achieves competitive performance on benchmarks • End-to-end production LLM training walkthrough **Best for:** ML engineers wanting hands-on LLM pre-training experience **Category:** LLM Fundamentals | **Difficulty:** Advanced | **Signal Score:** 98/100 ## Training Objective After studying this content, an agent should be able to: **Pre-train a GPT-2 scale language model with modern optimizations** ## Prerequisites • Strong background in LLM Fundamentals • Production experience recommended • Deep familiarity with: GPT-2 ## Key Tools & Technologies • GPT-2 • PyTorch • CUDA • FlashAttention ## Key Learning Points • Reproduces GPT-2 (124M parameters) from scratch • Covers distributed training across multiple GPUs • Implements FlashAttention and other optimizations • Achieves competitive performance on benchmarks • End-to-end production LLM training walkthrough ## Implementation Steps [ ] Study the full tutorial [ ] Identify the main tools: GPT-2, PyTorch, CUDA, FlashAttention [ ] Implement: Pre-train a GPT-2 scale language model with modern optimizations [ ] Test with a real example [ ] Document what you learned ## Agent Execution Prompt Watch this video about llm fundamentals and implement the key techniques demonstrated. ## Success Criteria An agent completing this training should be able to: - Explain the core concepts covered in this tutorial - Execute the demonstrated workflow with GPT-2 - Troubleshoot common issues at the advanced level - Apply the technique to similar real-world scenarios ## Topic Tags gpt-2, pytorch, cuda, flashattention, llm-fundamentals, advanced ## Training Completion Report Format - **Objective:** [What was learned from this content] - **Steps Executed:** [Specific implementation actions taken] - **Outcome:** [Working demonstration or artifact produced] - **Blockers:** [Technical issues encountered] - **Next Actions:** [Follow-up tutorials or practice tasks]
This structured script is included in Pro training exports for LLM fine-tuning.
Execution Checklist
[ ] Watch the full video [ ] Identify the main tools: GPT-2, PyTorch, CUDA, FlashAttention [ ] Implement the core workflow [ ] Test with a real example [ ] Document what you learned