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Passage of Faulty Nodes: A Novel Approach for Fault-Tolerant Routing on NoCs

Yota KUROKAWA, Masaru FUKUSHI

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Summary :

This paper addresses the problem of developing an efficient fault-tolerant routing method for 2D mesh Network-on-Chips (NoCs) to realize dependable and high performance many core systems. Existing fault-tolerant routing methods have two critical problems of high communication latency and low node utilization. Unlike almost all existing methods where packets always detour faulty nodes, we propose a novel and unique approach that packets can pass through faulty nodes. For this approach, we enhance the common NoC architecture by adding switches and links around each node and propose a fault-tolerant routing method with no virtual channels based on the well-known simple XY routing method. Simulation results show that the proposed method reduces average communication latency by about 97.1% compared with the existing method, without sacrificing fault-free nodes.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E102-A No.12 pp.1702-1710
Publication Date
2019/12/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E102.A.1702
Type of Manuscript
Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category

Authors

Yota KUROKAWA
  Yamaguchi University
Masaru FUKUSHI
  Yamaguchi University

Keyword