Traffic-Balanced Routing Algorithm for Irregular Mesh-Based On-Chip Networks

On-chip networks (OCNs) have been proposed to solve the increasing scale and complexity of the designs in nanoscale multicore VLSI designs. The concept of irregular meshes is an important issue because IPs of different sizes may be supported by various vendors. In order to solve routing problems in irregular meshes, modified routing algorithms to detour oversized IPs (OIPs) are needed. However, directly applying fault-tolerant routing algorithms may cause two serious problems: 1) heavy traffic loads around OIPs and 2) unbalanced traffic loads in irregular meshes. In this paper, we propose an OIP Avoidance Prerouting (OAPR) algorithm to solve the aforementioned problems. The proposed OAPR can make traffic loads evenly spread on the networks and shorten the average paths of packets. Therefore, the networks using the OAPR have lower latency and higher throughput than those using faulttolerant routing algorithms. In our experiments, four different cases are simulated to demonstrate that th...

• Type: Journal
• Year: 2008
• Where: TC
• Authors: Shu-Yen Lin, Chun-Hsiang Huang, Chih-Hao Chao, Keng-Hsien Huang, An-Yeu Wu
• Keywords: Fault-tolerant Routing Algorithms, Information Technology, Irregular Meshes, TC 2008, Traffic Loads