A simplified router architecture for the modified fat tree network-on-chip topology

The architecture of the class of routers to implement the modified Fat Tree topology is shown. The router architecture is buffer-less with a simplified routing function. The routing function is obtained from a model that describes the Fat Tree topology and from where the equations governing the routing circuitry are derived. A parameterized router model is developed and coded in verilog. A modified Fat Tree network generator that uses the router model is also developed. The generator produces verilog files directly used in functional simulation.