Variable pipeline structure for coarse grained reconfigurable array CMA

Naoki Ando; Koichiro Masuyama; Hayate Okuhara; Hideharu Amano

doi:10.1109/FPT.2016.7929537

Variable pipeline structure for coarse grained reconfigurable array CMA

Naoki Ando, Koichiro Masuyama, Hayate Okuhara, Hideharu Amano

Department of Information and Computer Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

6 Citations (Scopus)

Abstract

Cool mega-array (CMA) is a kind of coarse grained reconfigurable architecture (CGRA) which has shown its ability of ultra low-power computation. However, as CMA completely eliminates clock trees and registers, the performance improvement has been limited. In this paper, we introduce a variable pipeline structure to CMA with the minimum essential registers to provide more wide trade-off between performance and energy. Comparing with the baseline CMA (non-pipelined structure), an average of 77% improvement for performance was achieved with a small power overhead. Moreover, the energy efficiency was 1461 MOPS / mW at most which was about 2× that of the baseline structure. The best pipeline depth for an arbitrary energy-performance trade-off became selectable with only 11% area overhead.

Original language	English
Title of host publication	Proceedings of the 2016 International Conference on Field-Programmable Technology, FPT 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	217-220
Number of pages	4
ISBN (Electronic)	9781509056026
DOIs	https://doi.org/10.1109/FPT.2016.7929537
Publication status	Published - 2017 May 15
Event	15th International Conference on Field-Programmable Technology, FPT 2016 - Xi'an, China Duration: 2016 Dec 7 → 2016 Dec 9

Other

Other	15th International Conference on Field-Programmable Technology, FPT 2016
Country/Territory	China
City	Xi'an
Period	16/12/7 → 16/12/9

ASJC Scopus subject areas

Computer Networks and Communications
Electrical and Electronic Engineering
Safety, Risk, Reliability and Quality
Instrumentation
Hardware and Architecture

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/FPT.2016.7929537

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Variable pipeline structure for coarse grained reconfigurable array CMA. / Ando, Naoki; Masuyama, Koichiro; Okuhara, Hayate et al.
Proceedings of the 2016 International Conference on Field-Programmable Technology, FPT 2016. Institute of Electrical and Electronics Engineers Inc., 2017. p. 217-220 7929537.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ando, N, Masuyama, K, Okuhara, H & Amano, H 2017, Variable pipeline structure for coarse grained reconfigurable array CMA. in Proceedings of the 2016 International Conference on Field-Programmable Technology, FPT 2016., 7929537, Institute of Electrical and Electronics Engineers Inc., pp. 217-220, 15th International Conference on Field-Programmable Technology, FPT 2016, Xi'an, China, 16/12/7. https://doi.org/10.1109/FPT.2016.7929537

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abstract = "Cool mega-array (CMA) is a kind of coarse grained reconfigurable architecture (CGRA) which has shown its ability of ultra low-power computation. However, as CMA completely eliminates clock trees and registers, the performance improvement has been limited. In this paper, we introduce a variable pipeline structure to CMA with the minimum essential registers to provide more wide trade-off between performance and energy. Comparing with the baseline CMA (non-pipelined structure), an average of 77% improvement for performance was achieved with a small power overhead. Moreover, the energy efficiency was 1461 MOPS / mW at most which was about 2× that of the baseline structure. The best pipeline depth for an arbitrary energy-performance trade-off became selectable with only 11% area overhead.",

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Variable pipeline structure for coarse grained reconfigurable array CMA

Abstract

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ASJC Scopus subject areas

UN SDGs

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