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An efficient mechanism for performance optimization of variable-latency designs

Published: 04 June 2007 Publication History

Abstract

In many designs, the worst-case-delay path may never be exercised or may be exercised infrequently. For those designs, a strategy of optimizing a circuit for the worst-case conditions could lead to inefficient resource use. It is possible to improve the throughput of such circuits by introducing variable latency. One of the existing realizations of variable-latency design style is based on Telescopic Units. The design of the hold logic in telescopic units influences the circuit's throughput. In this paper, we show that the traditionally-designed hold logic in telescopic units may be inaccurate. We make use of the short path activation conditions to obtain more accurate hold logic than that commonly applied in the telescopic units. On average, our approach achieves a performance gain of 25.79% compared to 14.04%, which was reported in the previous works.

References

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L. Benini, E. Macii, M. Poncino and G. De Micheli, "Telescopic Units: A New Paradigm for Performance Optimization of VLSI Designs," IEEE Transaction on Computer-Aided Design of Integrated Circuits and Systems, vol. 17, no. 3, pp. 220--232, Mar. 1998.
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L. Benini, G. De Micheli, A. Lioy, E. Macii, G. Odasso, and M. Poncino, "Automatic Synthesis of large telescopic units based on near-minimum timed supersetting," IEEE Transaction on Computers, vol. 48, no. 8, pp. 769--779, Aug. 1999
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L. Benini, E. Macii and M. Poncino, "Efficient Controller Design for Telescopic Units," In Proceedings of IEEE International Conference Innovative Systems in Silicon, pp.290--299, Oct. 1997.
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Cited By

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  • (2022)Timing Variability-Aware Analysis and Optimization for Variable-Latency DesignsIEEE Transactions on Very Large Scale Integration (VLSI) Systems10.1109/TVLSI.2021.310982430:1(81-94)Online publication date: Jan-2022
  • (2017)Analysis and optimization of variable-latency designs in the presence of timing variabilityProceedings of the Conference on Design, Automation & Test in Europe10.5555/3130379.3130665(1219-1224)Online publication date: 27-Mar-2017
  • (2012)High performance reliable variable latency carry select additionProceedings of the Conference on Design, Automation and Test in Europe10.5555/2492708.2493017(1257-1262)Online publication date: 12-Mar-2012
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    cover image ACM Conferences
    DAC '07: Proceedings of the 44th annual Design Automation Conference
    June 2007
    1016 pages
    ISBN:9781595936271
    DOI:10.1145/1278480
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    Published: 04 June 2007

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    Author Tags

    1. logic synthesis
    2. throughput optimization
    3. timing analysis

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    View all
    • (2022)Timing Variability-Aware Analysis and Optimization for Variable-Latency DesignsIEEE Transactions on Very Large Scale Integration (VLSI) Systems10.1109/TVLSI.2021.310982430:1(81-94)Online publication date: Jan-2022
    • (2017)Analysis and optimization of variable-latency designs in the presence of timing variabilityProceedings of the Conference on Design, Automation & Test in Europe10.5555/3130379.3130665(1219-1224)Online publication date: 27-Mar-2017
    • (2012)High performance reliable variable latency carry select additionProceedings of the Conference on Design, Automation and Test in Europe10.5555/2492708.2493017(1257-1262)Online publication date: 12-Mar-2012
    • (2011)Microarchitectural Transformations Using ElasticityACM Journal on Emerging Technologies in Computing Systems10.1145/2043643.20436487:4(1-24)Online publication date: 1-Dec-2011
    • (2010)Collaborative voltage scaling with online STA and variable-latency datapathProceedings of the 20th symposium on Great lakes symposium on VLSI10.1145/1785481.1785560(347-352)Online publication date: 16-May-2010
    • (2010)Elastic systemsProceedings of the Eighth ACM/IEEE International Conference on Formal Methods and Models for Codesign10.1109/MEMCOD.2010.5558639(149-158)Online publication date: 1-Jul-2010
    • (2009)Variable-latency design by function speculationProceedings of the Conference on Design, Automation and Test in Europe10.5555/1874620.1875026(1704-1709)Online publication date: 20-Apr-2009
    • (2009)Masking timing errors on speed-paths in logic circuitsProceedings of the Conference on Design, Automation and Test in Europe10.5555/1874620.1874642(87-92)Online publication date: 20-Apr-2009
    • (2009)DynaTuneProceedings of the 2009 International Conference on Computer-Aided Design10.1145/1687399.1687430(172-179)Online publication date: 2-Nov-2009
    • (2009)Timing-driven optimization using lookahead logic circuitsProceedings of the 46th Annual Design Automation Conference10.1145/1629911.1630015(390-395)Online publication date: 26-Jul-2009
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