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IEICE TRANSACTIONS on Information

Support Efficient and Fault-Tolerant Multicast in Bufferless Network-on-Chip

Chaochao FENG, Zhonghai LU, Axel JANTSCH, Minxuan ZHANG, Xianju YANG

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Summary :

In this paper, we propose three Deflection-Routing-based Multicast (DRM) schemes for a bufferless NoC. The DRM scheme without packets replication (DRM_noPR) sends multicast packet through a non-deterministic path. The DRM schemes with adaptive packets replication (DRM_PR_src and DRM_PR_all) replicate multicast packets at the source or intermediate node according to the destination position and the state of output ports to reduce the average multicast latency. We also provide fault-tolerant supporting in these schemes through a reinforcement-learning-based method to reconfigure the routing table to tolerate permanent faulty links in the network. Simulation results illustrate that the DRM_PR_all scheme achieves 41%, 43% and 37% less latency on average than that of the DRM_noPR scheme and 27%, 29% and 25% less latency on average than that of the DRM_PR_src scheme under three synthetic traffic patterns respectively. In addition, all three fault-tolerant DRM schemes achieve acceptable performance degradation at various link fault rates without any packet lost.

Publication
IEICE TRANSACTIONS on Information Vol.E95-D No.4 pp.1052-1061
Publication Date
2012/04/01
Publicized
Online ISSN
1745-1361
DOI
10.1587/transinf.E95.D.1052
Type of Manuscript
PAPER
Category
Computer System

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