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Approximate Energy-Efficient Encoding for Serial Interfaces

Authors:

Daniele Jahier Pagliari,

Massimo PoncinoAuthors Info & Claims

ACM Transactions on Design Automation of Electronic Systems (TODAES), Volume 22, Issue 4

Article No.: 64, Pages 1 - 25

https://doi.org/10.1145/3041220

Published: 20 May 2017 Publication History

Abstract

Serial buses are ubiquitous interconnections in embedded computing systems that are used to interface processing elements with peripherals, such as sensors, actuators, and I/O controllers. Despite their limited wiring, as off-chip connections they can account for a significant amount of the total power consumption of a system-on-chip device. Encoding the information sent on these buses is the most intuitive and affordable way to reduce their power contribution; moreover, the encoding can be made even more effective by exploiting the fact that many embedded applications can tolerate intermediate approximations without a significant impact on the final quality of results, thus trading off accuracy for power consumption. We propose a simple yet very effective approximate encoding for reducing dynamic energy in serial buses. Our approach uses differential encoding as a baseline scheme and extends it with bounded approximations to overcome the intrinsic limitations of differential encoding for data with low temporal correlation. We show that the proposed scheme, in addition to yielding extremely compact codecs, is superior to all state-of-the-art approximate serial encodings over a wide set of traces representing data received or sent from/to sensor or actuators.

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Cited By

Ghosh SRaha ARaghunathan V(2023)Energy-Efficient Approximate Edge Inference SystemsACM Transactions on Embedded Computing Systems10.1145/358976622:4(1-50)Online publication date: 31-Mar-2023
https://dl.acm.org/doi/10.1145/3589766
Cipolletta APeluso VCalimera APoggi MTosi FAleotti FMattoccia S(2022)Energy-Quality Scalable Monocular Depth Estimation on Low-Power CPUsIEEE Internet of Things Journal10.1109/JIOT.2021.30808279:1(25-36)Online publication date: 1-Jan-2022
https://doi.org/10.1109/JIOT.2021.3080827
Jha CSingh SThakker RAwasthi MMekie J(2021)Zero Aware Configurable Data Encoding by Skipping Transfer for Error Resilient ApplicationsIEEE Transactions on Circuits and Systems I: Regular Papers10.1109/TCSI.2021.308162368:8(3337-3350)Online publication date: Aug-2021
https://doi.org/10.1109/TCSI.2021.3081623
Show More Cited By

Index Terms

Approximate Energy-Efficient Encoding for Serial Interfaces
1. Computer systems organization
  1. Embedded and cyber-physical systems
    1. Embedded systems
      1. Embedded hardware
2. Hardware

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Information & Contributors

Information

Published In

cover image ACM Transactions on Design Automation of Electronic Systems

ACM Transactions on Design Automation of Electronic Systems Volume 22, Issue 4

October 2017

430 pages

ISSN:1084-4309

EISSN:1557-7309

DOI:10.1145/3097980

Editor:
Naehyuck Chang
Korea Advanced Institute of Science and Technology, Korea

Issue’s Table of Contents

Copyright © 2017 ACM.

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Association for Computing Machinery

New York, NY, United States

Journal Family

ACM Journals for the Design of Smart and Connected Systems

Publication History

Published: 20 May 2017

Accepted: 01 January 2017

Revised: 01 November 2016

Received: 01 August 2016

Published in TODAES Volume 22, Issue 4

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Cited By

Ghosh SRaha ARaghunathan V(2023)Energy-Efficient Approximate Edge Inference SystemsACM Transactions on Embedded Computing Systems10.1145/358976622:4(1-50)Online publication date: 31-Mar-2023
https://dl.acm.org/doi/10.1145/3589766
Cipolletta APeluso VCalimera APoggi MTosi FAleotti FMattoccia S(2022)Energy-Quality Scalable Monocular Depth Estimation on Low-Power CPUsIEEE Internet of Things Journal10.1109/JIOT.2021.30808279:1(25-36)Online publication date: 1-Jan-2022
https://doi.org/10.1109/JIOT.2021.3080827
Jha CSingh SThakker RAwasthi MMekie J(2021)Zero Aware Configurable Data Encoding by Skipping Transfer for Error Resilient ApplicationsIEEE Transactions on Circuits and Systems I: Regular Papers10.1109/TCSI.2021.308162368:8(3337-3350)Online publication date: Aug-2021
https://doi.org/10.1109/TCSI.2021.3081623
Xie CPagliari DCalimera AMacii EPoncino M(2021)ACMEProceedings of the ACM/IEEE International Symposium on Low Power Electronics and Design10.1109/ISLPED52811.2021.9502495(1-6)Online publication date: 26-Jul-2021
https://dl.acm.org/doi/10.1109/ISLPED52811.2021.9502495
Jahier Pagliari DPoncino M(2020)On the impact of smart sensor approximations on the accuracy of machine learning tasksHeliyon10.1016/j.heliyon.2020.e057506:12(e05750)Online publication date: Dec-2020
https://doi.org/10.1016/j.heliyon.2020.e05750
Hu YLokhandwala MI. TTseng H(2019)Dynamic Multi-Resolution Data StorageProceedings of the 52nd Annual IEEE/ACM International Symposium on Microarchitecture10.1145/3352460.3358282(196-210)Online publication date: 12-Oct-2019
https://dl.acm.org/doi/10.1145/3352460.3358282
Velayudham SRajagopal SKo S(2019)An Improved Low-Power Coding for Serial Network-On-Chip LinksCircuits, Systems, and Signal Processing10.1007/s00034-019-01231-wOnline publication date: 13-Aug-2019
https://doi.org/10.1007/s00034-019-01231-w

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