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A deadlock-free fault-tolerant routing algorithm based on pseudo-receiving mechanism for Networks-on-Chip of CMP

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4 Author(s)
Yancang Chen ; Dept. of Comput., Nat. Univ. of Defense Technol., Changsha, China ; Lunguo Xie ; Jinwen Li ; Zhonghai Lu

As the size of CMOS technology scales down to nanometers domain, fault-tolerant is becoming a challenge for NoC. Turn model provides a simple and efficient systematic approach to the development of deadlock-free routing algorithms. In this paper, we propose a pseudo-receiving mechanism based on the support of local processor's cache to enable prohibited turn, and meanwhile make it keep deadlock-free. We present a fault-tolerant routing algorithm based on pseudo-receiving mechanism for 2D mesh. The routing algorithm is livelock-free in the cost of disable a few un-faulty links or nodes. The algorithm is applied to a single-cycle fixed output-buffered router. Experimental results show that, it achieves high performance even under high faulty rate.

Published in:

Multimedia Technology (ICMT), 2011 International Conference on

Date of Conference:

26-28 July 2011