A spare link based reliable Network-on-Chip design

Abstract

In this paper we have presented a reliable On-chip interconnection network design using spare links. It helps to mitigate the problem of fault chain formation due to failure of boundary links. The modified router design uses the redundant ports in boundary routers along with spare links for establishing connection with adjacent routers in case of link faults. This design modification on mesh based network along with proposed routing algorithm improves system reliability in case of single and multiple link failures. The performance evaluation in terms of network latency has also been improved compared to recent works with minimal area overhead.