SWIFT: A Low-Power Network-On-Chip Implementing the Token Flow Control Router Architecture With Swing-Reduced Interconnects
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Peh_SWIFT.pdf
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2.3 MB
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Checksum (MD5)
1a233bec17298e2aa2b5e88227ec29f1
Author(s)
Postman, Jacob
Krishna, Tushar
Edmonds, Christopher
Peh, Li-Shiuan
Chiang, Patrick
Date Issued
August 2013
Journal
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Postman, Jacob, Tushar Krishna, Christopher Edmonds, Li-Shiuan Peh, and Patrick Chiang. “SWIFT: A Low-Power Network-On-Chip Implementing the Token Flow Control Router Architecture With Swing-Reduced Interconnects.” IEEE Transactions on Very Large Scale Integration (VLSI) Systems 21, no. 8 (August 2013): 1432–1446.
Version
Author's final manuscript
Abstract
A 64-bit, 8 × 8 mesh network-on-chip (NoC) is presented that uses both new architectural and circuit design techniques to improve on-chip network energy-efficiency, latency, and throughput. First, we propose token flow control, which enables bypassing of flit buffering in routers, thereby reducing buffer size and their power consumption. We also incorporate reduced-swing signaling in on-chip links and crossbars to minimize datapath interconnect energy. The 64-node NoC is experimentally validated with a 2 × 2 test chip in 90 nm, 1.2 V CMOS that incorporates traffic generators to emulate the traffic of the full network. Compared with a fully synthesized baseline 8 × 8 NoC architecture designed to meet the same peak throughput, the fabricated prototype reduces network latency by 20% under uniform random traffic, when both networks are run at their maximum operating frequencies. When operated at the same frequencies, the SWIFT NoC reduces network power by 38% and 25% at saturation and low loads, respectively.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1109/tvlsi.2012.2211904
