Blog

Notes on AI engineering, LLM agents, and shipping production software.

June 25, 202611 min

#simulation
#physics

A fast molecular-dynamics simulator in pure NumPy

A naive molecular-dynamics loop is O(N²) and dies past a few hundred particles. With cell lists, a cutoff Lennard-Jones potential, velocity-Verlet integration, and reduced units, you can simulate thousands of particles in pure NumPy and watch a gas equilibrate.

Running LLM-Generated Code Without Getting Burned

June 23, 20267 min

#llm-agents
#sandboxing

A practical look at sandboxing the code a language model writes — the threat model, the isolation options, and a minimal Docker setup you can build on.