Energy-efficient NoC with multi-granularity power optimization.

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Title: Energy-efficient NoC with multi-granularity power optimization.
Authors: Wu, Ji1 wu_ji2012@163.com, Dong, Dezun1 dong@nudt.edu.cn, Liao, Xiangke1, Wang, Li1
Source: Journal of Supercomputing. Apr2017, Vol. 73 Issue 4, p1654-1671. 18p.
Subjects: Networks on a chip, Energy consumption of computers, Computer network architectures, Algorithms, Systems on a chip
Abstract: As the core count grows rapidly, NoC (Network-on-Chip) consumes an increasing fraction of the modern processors/SoCs (System-on-Chips) power. It is thus very important to design energy-efficient NoC architecture. Multi-NoC (Multiple Network-on-Chip) has demonstrated its advantages in power gating for reducing leakage power, which constitutes a significant fraction of NoC power. In this paper, we propose Chameleon, a novel heterogeneous Multi-NoC design. Chameleon employs a fine-grained power gating algorithm which exploits power saving opportunities at different levels of granularity simultaneously. Integrated with a congestion-aware traffic allocation policy, Chameleon is able to achieve both high performance and low power at varying network utilization. Our experimental results on both synthetic and real workloads show that Chameleon delivers an average of 2.61 % higher performance than Catnap, the best in the literature. More importantly, Chameleon consumes an average of 27.75 % less power than Catnap. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Supercomputing is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: As the core count grows rapidly, NoC (Network-on-Chip) consumes an increasing fraction of the modern processors/SoCs (System-on-Chips) power. It is thus very important to design energy-efficient NoC architecture. Multi-NoC (Multiple Network-on-Chip) has demonstrated its advantages in power gating for reducing leakage power, which constitutes a significant fraction of NoC power. In this paper, we propose Chameleon, a novel heterogeneous Multi-NoC design. Chameleon employs a fine-grained power gating algorithm which exploits power saving opportunities at different levels of granularity simultaneously. Integrated with a congestion-aware traffic allocation policy, Chameleon is able to achieve both high performance and low power at varying network utilization. Our experimental results on both synthetic and real workloads show that Chameleon delivers an average of 2.61 % higher performance than Catnap, the best in the literature. More importantly, Chameleon consumes an average of 27.75 % less power than Catnap. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Supercomputing is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1007/s11227-016-1859-8
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      – Code: eng
        Text: English
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        PageCount: 18
        StartPage: 1654
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      – SubjectFull: Networks on a chip
        Type: general
      – SubjectFull: Energy consumption of computers
        Type: general
      – SubjectFull: Computer network architectures
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      – SubjectFull: Algorithms
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      – SubjectFull: Systems on a chip
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      – TitleFull: Energy-efficient NoC with multi-granularity power optimization.
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              M: 04
              Text: Apr2017
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