Writing
2026.07.27 A Fresh Process Is Not a Cold System: Measuring import torch with Rust and wait4 Coldtrace adds wait4 child-resource accounting and finds that a fresh Python process can still inherit very different Linux page-cache and I/O conditions. 2026.06.23 What happens when you import torch on Linux? Tracing a PyTorch cold start through Python import timing, Linux syscalls, live process state, and the repeatable run records that became Coldtrace. 2026.06.11 Confessions of a Dubious Planner A missed morning buffer turns into a better model for planning around the actual human who has to execute the plan.