Multi-voltage variable pipeline routers with the same clock frequency for low-power network-on-chips systems

Akram Ben Ahmed, Hiroki Matsutani, Michihiro Koibuchi, Kimiyoshi Usami, Hideharu Amano

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In this paper, the Multi-voltage (multi-Vdd) variable pipeline router is proposed to reduce the power consumption of Networkon- Chips (NoCs) designed for Chip Multi-processors (CMPs). The multi- Vdd variable pipeline router adjusts its pipeline depth (i.e., communication latency) and supply voltage level in response to the applied workload. Unlike Dynamic Voltage and Frequency Scaling (DVFS) routers, the operating frequency remains the same for all routers throughout the CMP; thus, omitting the need to synchronize neighboring routers working at different frequencies. Two types of router architectures are presented: a Coarse- Grained Variable Pipeline (CG-VP) router that changes the voltage supplied to the entire router, and a Fine-Grained Variable Pipeline (FG-VP) router that uses a finer power partition. The evaluation results showed that the CG-VP and FG-VP routers achieve a 22.9% and 35.3% power reduction on average with 14% and 23% area overhead in comparison with a baseline router without variable pipelines, respectively. Thanks to the adopted lookahead mechanism to switch the supply voltage, the performance overhead is only 4.4%.

Original languageEnglish
Pages (from-to)909-917
Number of pages9
JournalIEICE Transactions on Electronics
VolumeE99C
Issue number8
DOIs
Publication statusPublished - 2016 Aug 1

Fingerprint

Routers
Clocks
Pipelines
Electric potential
Network-on-chip
Electric power utilization
Switches
Communication

Keywords

  • Low power networks
  • Multi-Vdd
  • Network-on-Chips

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Multi-voltage variable pipeline routers with the same clock frequency for low-power network-on-chips systems. / Ahmed, Akram Ben; Matsutani, Hiroki; Koibuchi, Michihiro; Usami, Kimiyoshi; Amano, Hideharu.

In: IEICE Transactions on Electronics, Vol. E99C, No. 8, 01.08.2016, p. 909-917.

Research output: Contribution to journalArticle

@article{701de36a06814b37b6d9872e7007b35a,
title = "Multi-voltage variable pipeline routers with the same clock frequency for low-power network-on-chips systems",
abstract = "In this paper, the Multi-voltage (multi-Vdd) variable pipeline router is proposed to reduce the power consumption of Networkon- Chips (NoCs) designed for Chip Multi-processors (CMPs). The multi- Vdd variable pipeline router adjusts its pipeline depth (i.e., communication latency) and supply voltage level in response to the applied workload. Unlike Dynamic Voltage and Frequency Scaling (DVFS) routers, the operating frequency remains the same for all routers throughout the CMP; thus, omitting the need to synchronize neighboring routers working at different frequencies. Two types of router architectures are presented: a Coarse- Grained Variable Pipeline (CG-VP) router that changes the voltage supplied to the entire router, and a Fine-Grained Variable Pipeline (FG-VP) router that uses a finer power partition. The evaluation results showed that the CG-VP and FG-VP routers achieve a 22.9{\%} and 35.3{\%} power reduction on average with 14{\%} and 23{\%} area overhead in comparison with a baseline router without variable pipelines, respectively. Thanks to the adopted lookahead mechanism to switch the supply voltage, the performance overhead is only 4.4{\%}.",
keywords = "Low power networks, Multi-Vdd, Network-on-Chips",
author = "Ahmed, {Akram Ben} and Hiroki Matsutani and Michihiro Koibuchi and Kimiyoshi Usami and Hideharu Amano",
year = "2016",
month = "8",
day = "1",
doi = "10.1587/transele.E99.C.909",
language = "English",
volume = "E99C",
pages = "909--917",
journal = "IEICE Transactions on Electronics",
issn = "0916-8524",
publisher = "Maruzen Co., Ltd/Maruzen Kabushikikaisha",
number = "8",

}

TY - JOUR

T1 - Multi-voltage variable pipeline routers with the same clock frequency for low-power network-on-chips systems

AU - Ahmed, Akram Ben

AU - Matsutani, Hiroki

AU - Koibuchi, Michihiro

AU - Usami, Kimiyoshi

AU - Amano, Hideharu

PY - 2016/8/1

Y1 - 2016/8/1

N2 - In this paper, the Multi-voltage (multi-Vdd) variable pipeline router is proposed to reduce the power consumption of Networkon- Chips (NoCs) designed for Chip Multi-processors (CMPs). The multi- Vdd variable pipeline router adjusts its pipeline depth (i.e., communication latency) and supply voltage level in response to the applied workload. Unlike Dynamic Voltage and Frequency Scaling (DVFS) routers, the operating frequency remains the same for all routers throughout the CMP; thus, omitting the need to synchronize neighboring routers working at different frequencies. Two types of router architectures are presented: a Coarse- Grained Variable Pipeline (CG-VP) router that changes the voltage supplied to the entire router, and a Fine-Grained Variable Pipeline (FG-VP) router that uses a finer power partition. The evaluation results showed that the CG-VP and FG-VP routers achieve a 22.9% and 35.3% power reduction on average with 14% and 23% area overhead in comparison with a baseline router without variable pipelines, respectively. Thanks to the adopted lookahead mechanism to switch the supply voltage, the performance overhead is only 4.4%.

AB - In this paper, the Multi-voltage (multi-Vdd) variable pipeline router is proposed to reduce the power consumption of Networkon- Chips (NoCs) designed for Chip Multi-processors (CMPs). The multi- Vdd variable pipeline router adjusts its pipeline depth (i.e., communication latency) and supply voltage level in response to the applied workload. Unlike Dynamic Voltage and Frequency Scaling (DVFS) routers, the operating frequency remains the same for all routers throughout the CMP; thus, omitting the need to synchronize neighboring routers working at different frequencies. Two types of router architectures are presented: a Coarse- Grained Variable Pipeline (CG-VP) router that changes the voltage supplied to the entire router, and a Fine-Grained Variable Pipeline (FG-VP) router that uses a finer power partition. The evaluation results showed that the CG-VP and FG-VP routers achieve a 22.9% and 35.3% power reduction on average with 14% and 23% area overhead in comparison with a baseline router without variable pipelines, respectively. Thanks to the adopted lookahead mechanism to switch the supply voltage, the performance overhead is only 4.4%.

KW - Low power networks

KW - Multi-Vdd

KW - Network-on-Chips

UR - http://www.scopus.com/inward/record.url?scp=84983287311&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84983287311&partnerID=8YFLogxK

U2 - 10.1587/transele.E99.C.909

DO - 10.1587/transele.E99.C.909

M3 - Article

AN - SCOPUS:84983287311

VL - E99C

SP - 909

EP - 917

JO - IEICE Transactions on Electronics

JF - IEICE Transactions on Electronics

SN - 0916-8524

IS - 8

ER -