A Drosophila brain simulator that runs the whole Traced universe of the released male CNS connectome — 165,122 neurons and every one of the 25,563,197 edges between them — inside a physical fly body, in closed loop, on one GPU. That universe is 165,122 of the 166,700 bodies the MaleCNS paper annotates: the runtime graph is the subgraph induced by annotation status Traced, a decision recorded ...