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Author Murray, Jacob ♦ Kim, Ryan ♦ Wettin, Paul ♦ Pande, Partha Pratim ♦ Shirazi, Behrooz
Source ACM Digital Library
Content type Text
Publisher Association for Computing Machinery (ACM)
File Format PDF
Copyright Year ©2014
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword DTM ♦ DVFS ♦ Multi-core ♦ NoC ♦ Small world ♦ Wireless links
Abstract The mm-wave small-world wireless NoC (mSWNoC) has emerged as an enabling interconnection infrastructure for designing high-bandwidth and energy-efficient multicore chips. In this mSWNoC architecture, long-range communication predominately takes place through the wireless shortcuts operating in the range of 10--100GHz, whereas short-range data exchange occurs through conventional metal wires. This results in performance advantages (lower latency and energy dissipation), mainly stemming from using the wireless links as long-range shortcuts between far-apart cores. The performance gain introduced by the wireless channels can be enhanced further if the wireline links of the mSWNoC are optimized according to the traffic patterns arising out of the application workloads. While there is significant energy savings, and hence temperature reduction, in the network due to the mSWNoC architecture, a load-imbalanced network is still susceptible to local temperature hotspots. In this work, we demonstrate that by incorporating congestion-avoidance routing with network-level dynamic voltage and frequency scaling (DVFS) in an mSWNoC, the power and thermal profiles can be improved without a significant impact on the overall network performance. In this work, we demonstrate how novel interconnect architectures enabled by the on-chip wireless links coupled with power management strategies can improve the energy and thermal characteristics of an mSWNoC significantly without introducing any performance degradation with respect to the conventional mesh-based NoC.
ISSN 15504832
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2014-11-01
Publisher Place New York
e-ISSN 15504840
Journal ACM Journal on Emerging Technologies in Computing Systems (JETC)
Volume Number 11
Issue Number 2
Page Count 22
Starting Page 1
Ending Page 22

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Source: ACM Digital Library