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Power Impact of Loop Buffer Schemes for Biomedical Wireless Sensor Nodes
Instruction memory organisations are pointed out as one of the major sources of energy consumption in embedded systems. As these systems are characterised by restrictive resources and a low-energy budget, any enhancement in this component allows not only to decrease the energy consumption but also t...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Molecular Diversity Preservation International (MDPI)
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3522955/ https://www.ncbi.nlm.nih.gov/pubmed/23202202 http://dx.doi.org/10.3390/s121115088 |
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author | Artes, Antonio Ayala, Jose L. Catthoor, Francky |
author_facet | Artes, Antonio Ayala, Jose L. Catthoor, Francky |
author_sort | Artes, Antonio |
collection | PubMed |
description | Instruction memory organisations are pointed out as one of the major sources of energy consumption in embedded systems. As these systems are characterised by restrictive resources and a low-energy budget, any enhancement in this component allows not only to decrease the energy consumption but also to have a better distribution of the energy budget throughout the system. Loop buffering is an effective scheme to reduce energy consumption in instruction memory organisations. In this paper, the loop buffer concept is applied in real-life embedded applications that are widely used in biomedical Wireless Sensor Nodes, to show which scheme of loop buffer is more suitable for applications with certain behaviour. Post-layout simulations demonstrate that a trade-off exists between the complexity of the loop buffer architecture and the energy savings of utilising it. Therefore, the use of loop buffer architectures in order to optimise the instruction memory organisation from the energy efficiency point of view should be evaluated carefully, taking into account two factors: (1) the percentage of the execution time of the application that is related to the execution of the loops, and (2) the distribution of the execution time percentage over each one of the loops that form the application. |
format | Online Article Text |
id | pubmed-3522955 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Molecular Diversity Preservation International (MDPI) |
record_format | MEDLINE/PubMed |
spelling | pubmed-35229552013-01-09 Power Impact of Loop Buffer Schemes for Biomedical Wireless Sensor Nodes Artes, Antonio Ayala, Jose L. Catthoor, Francky Sensors (Basel) Article Instruction memory organisations are pointed out as one of the major sources of energy consumption in embedded systems. As these systems are characterised by restrictive resources and a low-energy budget, any enhancement in this component allows not only to decrease the energy consumption but also to have a better distribution of the energy budget throughout the system. Loop buffering is an effective scheme to reduce energy consumption in instruction memory organisations. In this paper, the loop buffer concept is applied in real-life embedded applications that are widely used in biomedical Wireless Sensor Nodes, to show which scheme of loop buffer is more suitable for applications with certain behaviour. Post-layout simulations demonstrate that a trade-off exists between the complexity of the loop buffer architecture and the energy savings of utilising it. Therefore, the use of loop buffer architectures in order to optimise the instruction memory organisation from the energy efficiency point of view should be evaluated carefully, taking into account two factors: (1) the percentage of the execution time of the application that is related to the execution of the loops, and (2) the distribution of the execution time percentage over each one of the loops that form the application. Molecular Diversity Preservation International (MDPI) 2012-11-06 /pmc/articles/PMC3522955/ /pubmed/23202202 http://dx.doi.org/10.3390/s121115088 Text en © 2012 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
spellingShingle | Article Artes, Antonio Ayala, Jose L. Catthoor, Francky Power Impact of Loop Buffer Schemes for Biomedical Wireless Sensor Nodes |
title | Power Impact of Loop Buffer Schemes for Biomedical Wireless Sensor Nodes |
title_full | Power Impact of Loop Buffer Schemes for Biomedical Wireless Sensor Nodes |
title_fullStr | Power Impact of Loop Buffer Schemes for Biomedical Wireless Sensor Nodes |
title_full_unstemmed | Power Impact of Loop Buffer Schemes for Biomedical Wireless Sensor Nodes |
title_short | Power Impact of Loop Buffer Schemes for Biomedical Wireless Sensor Nodes |
title_sort | power impact of loop buffer schemes for biomedical wireless sensor nodes |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3522955/ https://www.ncbi.nlm.nih.gov/pubmed/23202202 http://dx.doi.org/10.3390/s121115088 |
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