Variable Pipeline Depth Processor for Energy Efficient Systems

Akihiko HYODO; Masanori MUROYAMA; Hiroto YASUURA

Variable Pipeline Depth Processor for Energy Efficient Systems

Akihiko HYODO, Masanori MUROYAMA, Hiroto YASUURA

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This paper presents a variable pipeline depth processor, which can dynamically adjust its pipeline depth and operating voltage at run-time, we call dynamic pipeline and voltage scaling (DPVS), depending on the workload characteristics under timing constraints. The advantage of adjusting pipeline depth is that it can eliminate the useless energy dissipation of the additional stalls, or NOPs and wrong-path instructions which would increase as the pipeline depth grow deeper in excess of the inherent parallelism. Although dynamic voltage scaling (DVS) is a very effective technique in itself for reducing energy dissipation, lowering supply voltage also causes performance degradation. By combining with dynamic pipeline scaling (DPS), it would be possible to retain performance at required level while reducing energy dissipation much further. Experimental results show the effectiveness of our DPVS approach for a variety of benchmarks, reducing total energy dissipation by up to 64.90% with an average of 27.42% without any effect on performance, compared with a processor using only DVS.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E86-A No.12 pp.2983-2990

Publication Date: 2003/12/01

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Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)

Category: Power Optimization

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Akihiko HYODO, Masanori MUROYAMA, Hiroto YASUURA, "Variable Pipeline Depth Processor for Energy Efficient Systems" in IEICE TRANSACTIONS on Fundamentals, vol. E86-A, no. 12, pp. 2983-2990, December 2003, doi: .
Abstract: This paper presents a variable pipeline depth processor, which can dynamically adjust its pipeline depth and operating voltage at run-time, we call dynamic pipeline and voltage scaling (DPVS), depending on the workload characteristics under timing constraints. The advantage of adjusting pipeline depth is that it can eliminate the useless energy dissipation of the additional stalls, or NOPs and wrong-path instructions which would increase as the pipeline depth grow deeper in excess of the inherent parallelism. Although dynamic voltage scaling (DVS) is a very effective technique in itself for reducing energy dissipation, lowering supply voltage also causes performance degradation. By combining with dynamic pipeline scaling (DPS), it would be possible to retain performance at required level while reducing energy dissipation much further. Experimental results show the effectiveness of our DPVS approach for a variety of benchmarks, reducing total energy dissipation by up to 64.90% with an average of 27.42% without any effect on performance, compared with a processor using only DVS.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e86-a_12_2983/_p

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@ARTICLE{e86-a_12_2983,
author={Akihiko HYODO, Masanori MUROYAMA, Hiroto YASUURA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Variable Pipeline Depth Processor for Energy Efficient Systems},
year={2003},
volume={E86-A},
number={12},
pages={2983-2990},
abstract={This paper presents a variable pipeline depth processor, which can dynamically adjust its pipeline depth and operating voltage at run-time, we call dynamic pipeline and voltage scaling (DPVS), depending on the workload characteristics under timing constraints. The advantage of adjusting pipeline depth is that it can eliminate the useless energy dissipation of the additional stalls, or NOPs and wrong-path instructions which would increase as the pipeline depth grow deeper in excess of the inherent parallelism. Although dynamic voltage scaling (DVS) is a very effective technique in itself for reducing energy dissipation, lowering supply voltage also causes performance degradation. By combining with dynamic pipeline scaling (DPS), it would be possible to retain performance at required level while reducing energy dissipation much further. Experimental results show the effectiveness of our DPVS approach for a variety of benchmarks, reducing total energy dissipation by up to 64.90% with an average of 27.42% without any effect on performance, compared with a processor using only DVS.},
keywords={},
doi={},
ISSN={},
month={December},}

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TY - JOUR
TI - Variable Pipeline Depth Processor for Energy Efficient Systems
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2983
EP - 2990
AU - Akihiko HYODO
AU - Masanori MUROYAMA
AU - Hiroto YASUURA
PY - 2003
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E86-A
IS - 12
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - December 2003
AB - This paper presents a variable pipeline depth processor, which can dynamically adjust its pipeline depth and operating voltage at run-time, we call dynamic pipeline and voltage scaling (DPVS), depending on the workload characteristics under timing constraints. The advantage of adjusting pipeline depth is that it can eliminate the useless energy dissipation of the additional stalls, or NOPs and wrong-path instructions which would increase as the pipeline depth grow deeper in excess of the inherent parallelism. Although dynamic voltage scaling (DVS) is a very effective technique in itself for reducing energy dissipation, lowering supply voltage also causes performance degradation. By combining with dynamic pipeline scaling (DPS), it would be possible to retain performance at required level while reducing energy dissipation much further. Experimental results show the effectiveness of our DPVS approach for a variety of benchmarks, reducing total energy dissipation by up to 64.90% with an average of 27.42% without any effect on performance, compared with a processor using only DVS.
ER -