Notes from the lab.
Technical write-ups on building AI models from scratch in Jamaica — the arithmetic, the decisions, and the parts that went wrong. Written for people who want the working, not the headline.
Building a Hurricane AI in Jamaica on One GPU
NatureV1 is an open-source AI weather and hurricane model, built in Jamaica in about a week on a single GPU. Three design bets, a hosted notebook that wiped its disk every session, the number that showed the hurricane heads learned something — and where a red team broke it.
3 Billion Tokens on One GPU: How CorX1.5 Was Trained
Everyone asks how 3 billion tokens fit on a single GPU. They never had to. Here is what actually has to fit — the memory arithmetic for a 158M-parameter model, the 6 GB memory-mapped token file, sequence packing, gradient accumulation, and why the whole pretraining run is only about 5,700 optimiser steps.
More posts as the work happens. New releases also go out on the RSS feed.
The lab
Who's behind this.
CorX Labs is a one-person research lab in Jamaica. Here is who built it and how it started.