Title
Energy-efficient NoC with variable channel width
Abstract
Although Network-on-Chip(NoC) has become a popular solution for multicore system, its power consumption is still a concern for power-constrained design. We propose a NoC with variable channel width to achieve better energy-efficiency for NoC traffics in real systems. Based on the observation that short control messages account for a significant portion of NoC traffic, we use wide channel (128-bit) to transmit long data messages while dynamically split it into 2 narrower channels (64-bit) for short messages and shut down the unused channel to save energy. With workloads from PARSEC 2.1 benchmark suits, our proposed approach reduces NoC power consumption by up to 25%. More power saving can be achieved as injection rate increases under synthetic traffics. Besides, our method has no impact on performance and its induced area overhead is negligible.
Year
DOI
Venue
2015
10.1109/MWSCAS.2015.7282188
Midwest Symposium on Circuits and Systems Conference Proceedings
Keywords
Field
DocType
Network-on-chip,energy-efficient,variable channel width,no performance degradation
Power saving,Parsec,Efficient energy use,Computer science,Communication channel,Channel width,Electronic engineering,Decoding methods,Multi-core processor,Power consumption,Embedded system
Conference
ISSN
Citations 
PageRank 
1548-3746
2
0.37
References 
Authors
9
2
Name
Order
Citations
PageRank
Cheng Li161.85
Paul Ampadu228528.55