The University of Southampton
University of Southampton Institutional Repository

Transient and power-neutral computing: a paradigm shift for embedded systems?

Merrett, Geoff V. (2016) Transient and power-neutral computing: a paradigm shift for embedded systems? At "Hilariously Low-Power Computing" Workshop (ASPLOS 2016), United States.

Record type: Conference or Workshop Item (Other)

Abstract

Embedded systems powered from time-varying energy harvesting power sources, for example solar PV or mechanical vibration, have traditionally operated using the principles of energy-neutral computing. That is, over a sensible period of time (e.g. 24 hours), the energy consumed is equal to the energy that was harvested. This has the advantage of making the system ‘look like’ a battery-powered system, yet typically results in large, complex and expensive power conversion circuitry and introduces challenges such as fast and reliable cold-start. In recent years, the concept of transient computing has emerged to challenge this, whereby low-power embedded systems can be designed to operate and perform useful computation when energy is available, and carefully ‘hibernate’ when the power disappears such that it can continue where it left off when supply is regained. In this talk I will explain this shift towards transient computing and the different approaches that have been proposed, and the new challenges that are raised as a result. I will also discuss a complementary approach to the powering of transient systems, named power-neutral computing. Instead of equating energy consumption to energy supply, as is the case in energy-neutral systems, power-neutral systems attempt to match instantaneous power consumption to the instantaneous power supplied. This fine-grained control permits better use of available resources while overcoming the disadvantages of energy-neutral computing; furthermore, it can work alongside aforementioned transient computing techniques if supply disappears altogether.

PDF hlpc_invited_print.pdf - Other
Download (17MB)

More information

Accepted/In Press date: 2 April 2016
e-pub ahead of print date: 2 April 2016
Venue - Dates: "Hilariously Low-Power Computing" Workshop (ASPLOS 2016), United States, 2016-04-02
Organisations: Electronic & Software Systems

Identifiers

Local EPrints ID: 390669
URI: http://eprints.soton.ac.uk/id/eprint/390669
PURE UUID: 9915f573-88ec-47c1-8e77-503c4ee81c20
ORCID for Geoff V. Merrett: ORCID iD orcid.org/0000-0003-4980-3894

Catalogue record

Date deposited: 02 Apr 2016 21:50
Last modified: 17 Jul 2017 19:27

Export record

Contributors

Author: Geoff V. Merrett ORCID iD

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×