A study on WK-recursive topology using gpNoCsim++ simulator and comparison to Other topologies

Network-on-Chip (NoC) was first invented to tackle with the problem of communication in System-on-Chip (SoC). SoC uses a shared bus to communicate between components. All architectures based on a shared bus have some inherent problems as limited scalability and shared bus becoming a bottleneck. NoC offers a scalable architecture and capability of complex topological design. The architecture is inspired from computer networks. Although it is similar to computer networks from routing, switching and topology point of view but consumption of energy and space is too important for NoC. This article studies WK-recursive topology for NoC. The topology is simulated with gnNoCSim++ and performance metrics is compared to Fat Tree, Extended-Butterfly Fat Tree Interconnection (EFTI), Mesh, Torus and Octagon. The comparison shows strengths and weaknesses of WK-recursive.