Floorplanning and Evaluation of A Hierarchical Cluster-Based NoC for Multicore System

The WK-recursive network well conforms to implementation of a large distributed system due to its many favorable properties such as regularity and recursive scalability. In this paper, we propose a hierarchical cluster-based NoC that blends WK-recursive network and Pyramid WK-recursive network, where each sub-network is optimized for different traffic types. To better exploit the communication locality of the asymmetric topology, we present a specific implementation with tile shapes and Manhattan-style wire. Using a extended cycle-accurate simulator Noxim, the experiment results show that our proposed design provides 18.6%–29.3% improvement in average network latency and 11.2%–17.8% improvement in average network throughput over the previous architecture evaluated in this study. It is demonstrated that it is feasible to implement the triangular topologies with rectangular manhattan architecture.