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Authors: Ji Gu and Tohru Ishihara

Affiliation: Kyoto University, Japan

ISBN: 978-989-8565-09-9

ISSN: 2184-4968

Keyword(s): Energy Efficiency, Optimization Techniques, Microprocessor, Multitasking, Embedded Systems.

Related Ontology Subjects/Areas/Topics: Data Communication Networking ; Energy and Economy ; Energy-Aware Systems and Technologies ; Optimization Techniques for Efficient Energy Consumption ; Performance Evaluation ; Software Engineering ; Software Project Management ; Telecommunications

Abstract: Microprocessors increasingly execute multiple tasks in step with the increasing complexity of modern embedded applications. Shared by multiple tasks, conventional on-chip L1 instruction cache (I-cache) usually suffers a high cache miss ratio due to inter/intra task interferences and is the most energy-consuming component of the processor chip. This paper presents a power-efficient loop instruction cache design for multitasking embedded applications, which is a two-fold technique that can significantly reduce the L1 I-cache accesses for energy saving and reduce the I-cache misses caused by task interference. Experiments on a case study show that our scheme reduces energy consumption in the I-cache hierarchy by 36.5% and I-cache misses can be reduced from 6.0% to 18.3%, depending on the frequency of context switch in the multitasking system.

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Paper citation in several formats:
Gu, J. and Ishihara, T. (2012). A CASE STUDY OF ENERGY-EFFICIENT LOOP INSTRUCTION CACHE DESIGN FOR EMBEDDED MULTITASKING SYSTEMS.In Proceedings of the 1st International Conference on Smart Grids and Green IT Systems - Volume 1: SMARTGREENS, ISBN 978-989-8565-09-9, ISSN 2184-4968, pages 197-202. DOI: 10.5220/0003951001970202

@conference{smartgreens12,
author={Ji Gu. and Tohru Ishihara.},
title={A CASE STUDY OF ENERGY-EFFICIENT LOOP INSTRUCTION CACHE DESIGN FOR EMBEDDED MULTITASKING SYSTEMS},
booktitle={Proceedings of the 1st International Conference on Smart Grids and Green IT Systems - Volume 1: SMARTGREENS,},
year={2012},
pages={197-202},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003951001970202},
isbn={978-989-8565-09-9},
}

TY - CONF

JO - Proceedings of the 1st International Conference on Smart Grids and Green IT Systems - Volume 1: SMARTGREENS,
TI - A CASE STUDY OF ENERGY-EFFICIENT LOOP INSTRUCTION CACHE DESIGN FOR EMBEDDED MULTITASKING SYSTEMS
SN - 978-989-8565-09-9
AU - Gu, J.
AU - Ishihara, T.
PY - 2012
SP - 197
EP - 202
DO - 10.5220/0003951001970202

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