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🌌 The Ultra-Scale Playbook

The ultimate guide to training LLM on large GPU Clusters

This comprehensive book covers everything about scaling LLMs in 2025, including:

  • Memory optimization techniques for training large models
  • Data Parallelism and ZeRO optimization
  • Tensor Parallelism for model splitting
  • Context Parallelism with Ring Attention
  • Pipeline Parallelism for efficient distributed training
  • Expert Parallelism for MoE models
  • 5D Parallelism strategies
  • GPU optimization techniques

📚 Chapters

  1. High-Level Overview
  2. First Steps: Training on One GPU
  3. Data Parallelism
  4. Tensor Parallelism
  5. Context Parallelism
  6. Pipeline Parallelism
  7. Expert Parallelism
  8. 5D Parallelism in a Nutshell
  9. Finding the Best Training Configuration
  10. Diving into the GPUs – Fusing, Threading, and Mixing
  11. Conclusion
  12. References
  13. Appendix

📖 Source

Original content from Hugging Face - The Ultra-Scale Playbook