2026-07-11
Memory-Efficient Activation Checkpointing with Sliding Window and Hirschberg's Algorithm for 0/1 Knapsack Solving in PyTorch
publications
articles
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2026-02-19Solving 0/1 Knapsack problem with sliding window and Hirschberg algorithmPaged Out!, Issue #8, page 8Open source
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2024-06-01Building automated machine learning with type inferencePaged Out!, Issue #4, page 4Open source
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about me
I like computers!- My fav tech: C++, CUDA, Python, PyTorch, Linux, ML compilers, LLMs, Rust, WebGPU and TypeScript
- I want to be a full time research scientist and work on the intersection of math, AI and low-level systems
- I like math and I try to find time every week to learn something new. I'm currently slowly working through the "How to prove it" by Daniel Velleman (basic math undergrad book)
- I'm a regular author for Paged Out! magazine, which is a cool nerdy zine for things like hacking, programming and everything computer-related
- My name is spelled as yenjay in English and 延杰 in Chinese
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Night job:
- Research - LLMs, ML systems
- tiny-vllm - High performance LLM inference engine in C++ and CUDA, a younger sibling of vLLM, with continuous batching and paged attention
- torch-webgpu - PyTorch compiler and WebGPU runtime
- Day job: Applying LLMs to things c:
- GitHub: @jmaczan
- Email: jedrzej@maczan.pl
- I got bachelor degree in computer science from Wrocław University of Science and Technology. I'd like to get back to university one day and do master's/PhD in math or computer science! :D
- Art of Anita: anitamaczan.pl, instagram: @anita_maczan
- ORCID: 0000-0003-1741-6064
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Other links (not very active):
- Mastodon: mathstodon.xyz/@jmaczan
- LinkedIn: click
- X/Twitter: @jedmaczan
- HackTheBox: @7563687575 (inactive, had fun some time ago)