CCTorus : A New Torus Topology for Interconnection Networks

— The topology of interconnection networks plays a key role in the performance of all general purpose networking applications. Mesh, Torus, and Hypercube have been the most popular interconnection network topologies used in most of the digital communication systems. Among these topologies Torus is well suited in any general purpose networking application because of its simple network structure and high degree of symmetry. The performance of an interconnection network can be measured using various performance metrics as well as structural properties. Performance parameters that must be considered in designing an interconnection network are latency, throughput, cost, node degree, network diameters, and path diversity. Keeping these factors in mind, in this paper, we have proposed an interconnection network topology namely Centrally Connected Torus (CCTorus), which is the new version of classical Torus network. The aim is to achieve low latency, high throughput, minimum network diameter and better path diversity. In this paper the proposed topology is evaluated by using both theoretical analysis and simulations. Simulation results show that CCTorus has better scalability, and its average latency and average throughput is better than that of Mesh, XMesh, Torus, and XTorus by significant proportions respectively, particularly for larger size networks.