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Journal article
Graceful Performance Modulation for Power-Neutral Transient Computing Systems
IEEE transactions on computer-aided design of integrated circuits and systems, v 35(5), pp 738-749
01 May 2016
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Transient computing systems do not have energy storage, and operate directly from energy harvesting. These systems are often faced with the inherent challenge of low-current or transient power supply. In this paper, we propose "power-neutral" operation, a new paradigm for such systems, whereby the instantaneous power consumption of the system must match the instantaneous harvested power. Power neutrality is achieved using a control algorithm for dynamic frequency scaling, modulating system performance gracefully in response to the incoming power. Detailed system model is used to determine design parameters for selecting the system voltage thresholds where the operating frequency will be raised or lowered, or the system will be hibernated. The proposed control algorithm for power-neutral operation is experimentally validated using a microcontroller incorporating voltage threshold-based interrupts for frequency scaling. The microcontroller is powered directly from real energy harvesters; results demonstrate that a power-neutral system sustains operation for 4%-88% longer with up to 21% speedup in application execution.
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Details
- Title
- Graceful Performance Modulation for Power-Neutral Transient Computing Systems
- Creators
- Domenico Balsamo - University of SouthamptonAnup Das - University of SouthamptonAlex S. Weddell - University of SouthamptonDavide Brunelli - University of TrentoBashir M. Al-Hashimi - University of SouthamptonGeoff V. Merrett - University of SouthamptonLuca Benini - Laboratori Guglielmo Marconi
- Publication Details
- IEEE transactions on computer-aided design of integrated circuits and systems, v 35(5), pp 738-749
- Publisher
- IEEE
- Number of pages
- 12
- Grant note
- Telecom Italia s.p.a. Ph.D. Grant EP/L000563/1; EP/K034448/1 / Engineering and Physical Sciences Research Council; UK Research & Innovation (UKRI); Engineering & Physical Sciences Research Council (EPSRC) CA 318013 / PHIDIAS (EU 7th Framework Programme) EP/K034448/1; EP/L000563/1 / EPSRC; UK Research & Innovation (UKRI); Engineering & Physical Sciences Research Council (EPSRC)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Electrical and Computer Engineering
- Web of Science ID
- WOS:000374969400005
- Scopus ID
- 2-s2.0-84968654916
- Other Identifier
- 991019295181104721
UN Sustainable Development Goals (SDGs)
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Computer Science, Hardware & Architecture
- Computer Science, Interdisciplinary Applications
- Engineering, Electrical & Electronic