D53 — Global congestion map off, global router v2 deferred

Superseded by D56

Decision

The global congestion map (--global-congestion, doc 05 §16) stays off, and the rest of global router v2 (Steiner topology, via capacity, GPU pattern/maze port) is deferred

Alternatives

Turn the map on; continue with v2

Reason

18 hard boards at a fixed budget: 13,285 routed without, 13,289–13,294 with (noise); corridors 12,933. With cut-based capacities under 5 % of tiles reach 6/8 utilisation; about two thirds of unrouted connections on tiers B–D are boxed-in pins, which tiles cannot see