filipkunc.com

One Qwen3.8-27B conversation on my RTX 5070 Ti, replayed from GPU telemetry and a CUDA trace.

A frustrating debugging session with Claude, hallucinated test results, and a reminder to get an independent review.

A two-minute French-electro track that plays, draws and edits in your browser: breathing bass, a siren hook, warm pads, an acid arp, and knobs to twist.

Rust inside a C++ Node addon via CMake and Corrosion, and one VS Code window that debugs JS, C++, and Rust together, V8 values decoded.

vLLM, Prometheus and Jaeger on one desktop GPU: 32 parallel requests until the KV cache fills, and a tool-calling agent traced to the code it ran.

Building a minimal hypervisor with kvm-ioctls and a no_std Rust kernel it boots straight into long mode, then giving it a screen, a mouse, a software rasterizer, and enough syscalls to run a real Linux binary.

Building a live collaborative board with data-star over server-sent events, finding where real-time input hits a wall, and crossing it with the WebSocket prediction and interpolation games have used for years.

How a Flutter UI and a Rust core talk through flutter_rust_bridge: typed data, sync and async calls, and streams, built into a Hacker News reader.

Agents need proper context, and MCP and skills provide it.

A live AST explorer that runs the same import-rewriting transform two ways, oxc in Rust and Acorn in JavaScript, including source maps.

Moving thousands of units at once with one shared flow field instead of per-unit paths, simulated live in the browser with Rust and WASM.

A text editor that renders glyph outlines on the GPU with HarfBuzz, benchmarked against canvas 2D and DOM text.

My 3D mesh editor, built since 2009 and ported to WebGL2 and WASM by AI.

The same native compressor wrapped for Node four ways, with NaN, Node-API, napi.rs, and WebAssembly.

Searching code fast with ripgrep, trigrams, and embeddings, benchmarked on the Node.js source.

My favorite C and C++ header-only libraries.

Forcing C++ data races to show up on purpose, then fixing them with volatile, atomics, and mutexes.

A WebGPU cloth sim that rebuilds a million mesh normals every frame, with one kernel ported across four GPU languages.

Turn a plain TypeScript type into a live, in-browser JSON validator by walking it with the TypeScript Compiler API.

Comparing small local models on a LeetCode-style task with deterministic unit tests as the judge.

A different way to look at my career than a bullet point CV.

Tour of techniques for modifying existing code at runtime.

Reviving my old projects via Claude, WebGL and WASM.

Using Gemini to generate game art assets, and the workflow around it.