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Macro-Aware Row-Style Power Delivery Network Design for Better Routability

Published: 05 November 2018 Publication History

Abstract

Reliability of a P/G network is one of the most important concerns in a chip design, which makes powerplanning the most critical step in the physical design. Traditional P/G network design mainly focuses on reducing usage of routing resource to satisfy voltage drop and electromigration constraints according to a regular mesh. As the number of macros in a modern design increases, this style may waste more routing resource and make routing congestion more severe in local regions. In order to save routing resource and increase routability, this paper proposes a delicate powerplanning method. First, we propose a row-style power mesh to facilitate connection of pre-placed macros and increase routability of signal nets in the later stage. Besides, an effective power stripe width which can reduce wastage of routing resource and provide stronger supply voltage is found. Moreover, we propose the first work to use the linear programming algorithm to minimize P/G routing area and consider routability at the same time. The experimental results show that routability of a design with many macros can be significantly improved by our row-style power networks.

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Cited By

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  • (2024)Power Sub-Mesh Construction in Multiple Power Domain Design with IR Drop and Routability OptimizationProceedings of the 2024 International Symposium on Physical Design10.1145/3626184.3633312(205-212)Online publication date: 12-Mar-2024
  • (2024)IR-drop and Routing Congestion Aware PDN Refinement Framework for Timing Optimization2024 21st International SoC Design Conference (ISOCC)10.1109/ISOCC62682.2024.10762734(133-134)Online publication date: 19-Aug-2024
  • (2023)Routability-driven Power/Ground Network Optimization Based on Machine LearningACM Transactions on Design Automation of Electronic Systems10.1145/358781728:4(1-27)Online publication date: 17-May-2023
  • Show More Cited By

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    cover image Guide Proceedings
    2018 IEEE/ACM International Conference on Computer-Aided Design (ICCAD)
    Nov 2018
    939 pages

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    IEEE Press

    Publication History

    Published: 05 November 2018

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    View all
    • (2024)Power Sub-Mesh Construction in Multiple Power Domain Design with IR Drop and Routability OptimizationProceedings of the 2024 International Symposium on Physical Design10.1145/3626184.3633312(205-212)Online publication date: 12-Mar-2024
    • (2024)IR-drop and Routing Congestion Aware PDN Refinement Framework for Timing Optimization2024 21st International SoC Design Conference (ISOCC)10.1109/ISOCC62682.2024.10762734(133-134)Online publication date: 19-Aug-2024
    • (2023)Routability-driven Power/Ground Network Optimization Based on Machine LearningACM Transactions on Design Automation of Electronic Systems10.1145/358781728:4(1-27)Online publication date: 17-May-2023
    • (2023)Integrated Power Distribution Network Synthesis for Mixed Macro Blocks and Standard CellsIEEE Transactions on Circuits and Systems II: Express Briefs10.1109/TCSII.2023.323619070:6(2211-2215)Online publication date: Jun-2023
    • (2023)Routability-Driven Power Distribution Network Synthesis with IR-Drop Budgeting2023 ACM/IEEE 5th Workshop on Machine Learning for CAD (MLCAD)10.1109/MLCAD58807.2023.10299845(1-6)Online publication date: 10-Sep-2023
    • (2021)A Fast Power Network Optimization Algorithm for Improving Dynamic IR-dropProceedings of the 2021 International Symposium on Physical Design10.1145/3439706.3447042(91-98)Online publication date: 22-Mar-2021

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