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Journal of Electrical and Computer Engineering
Volume 2012, Article ID 728191, 14 pages
Research Article

Status Data and Communication Aspects in Dynamically Clustered Network-on-Chip Monitoring

1Turku Centre for Computer Science (TUCS), Joukahaisenkatu 3-5 B, 20520 Turku, Finland
2Department of Information Technology, University of Turku, 20014 Turku, Finland

Received 1 July 2011; Revised 28 October 2011; Accepted 1 November 2011

Academic Editor: Sao-Jie Chen

Copyright © 2012 Ville Rantala et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Monitoring and diagnostic systems are required in modern Network-on-Chip implementations to assure high performance and reliability. A dynamically clustered NoC monitoring structure for traffic and fault monitoring is presented. It is a distributed monitoring approach which does not require any centralized control. Essential issues concerning status data diffusion, processing, and format are simulated and analyzed. The monitor communication and placement are also discussed. The results show that the presented monitoring structure can be used to improve the performance of an NoC. Even a small adjustment of parameters, for example, considering monitoring data format or monitoring placing, can have significant influence to the overall performance of the NoC. The analysis shows that the monitoring system should be carefully designed in terms of data diffusion and routing and monitoring algorithms to obtain the potential performance improvement.