Hi

• GitHub: @jmaczan
• Hugging Face: @jmaczan
• X: @jedmaczan
• Email: jedrzej @ maczan.pl

now

• Day job: Generative AI system with real-time RAG, LLM and Azure cloud
• Night job: Beginning to contribute to PyTorch, with focus on math optimizations and PyTorch compiler
  • 20x memory reduction and 37% speedup in memory partitioning solver (dp knapsack with hirschberg and sliding window)
  • 20% CPU and 15% CUDA speedup of func.hessian for scalar functions
  • Enable computing Hessian matrices of larger functions by chunking in torch.func.hessian via jacrev

writing

• [Incoming] Self-contained handwritten digit recognizer, Paged Out!, Issue #7, page ?, 2025 GitHub
• A primer on Differentiable Architecture Search, Paged Out!, Issue #6, page 5, 2025 GitHub
• GPT in PyTorch, Paged Out!, Issue #5, page 6, 2024 GitHub
• Building automated machine learning with type inference, Paged Out!, Issue #4, page 4, 2024 GitHub

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