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Redundant via insertion with wire bending

Published: 29 March 2009 Publication History

Abstract

Redundant via insertion is highly recommended for improving chip yield and reliability. In this paper, we study the problem of double via insertion with wire bending (DVI/WB) in a post-routing stage, where a single via can have at most one redundant via inserted next to it. Aside from this, we are allowed to bend existing signal wires for enhancing the insertion rate of double vias. The goal of DVI/WB is to primarily insert as many double vias as possible and to minimize the amount of layout perturbation as the secondary objective. We formulate the DVI/WB problem as that of finding a minimum-weight maximum independent set (mWMIS) on an enhanced conflict graph. We propose algorithms to perform wire bending and to construct the enhanced conflict graph from a given design. Moreover, we also propose a zero-one integer linear program (0-1 ILP) based approach to solve mWMIS. Experimental results show that our approach can improve the insertion rate by up to 5.58% at the expense of up to 0.37% wirelengh increase when compared with a state-of-the-art double via insertion method that does not consider wire bending.

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Cited By

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  • (2018)Self-Aligned Double Patterning-Aware Detailed Routing With Double Via Insertion and Via Manufacturability ConsiderationIEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems10.1109/TCAD.2017.271266037:3(657-668)Online publication date: Mar-2018
  • (2017)Redundant Local-Loop Insertion for Unidirectional RoutingIEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems10.1109/TCAD.2017.265181136:7(1113-1125)Online publication date: 1-Jul-2017
  • (2016)Self-aligned double patterning-aware detailed routing with double via insertion and via manufacturability considerationProceedings of the 53rd Annual Design Automation Conference10.1145/2897937.2898088(1-6)Online publication date: 5-Jun-2016
  • Show More Cited By

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cover image ACM Conferences
ISPD '09: Proceedings of the 2009 international symposium on Physical design
March 2009
208 pages
ISBN:9781605584492
DOI:10.1145/1514932
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Publication History

Published: 29 March 2009

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Author Tags

  1. integer linear program
  2. redundant via
  3. wire bending

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ISPD09
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ISPD09: International Symposium on Physical Design
March 29 - April 1, 2009
California, San Diego, USA

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Overall Acceptance Rate 62 of 172 submissions, 36%

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Cited By

View all
  • (2018)Self-Aligned Double Patterning-Aware Detailed Routing With Double Via Insertion and Via Manufacturability ConsiderationIEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems10.1109/TCAD.2017.271266037:3(657-668)Online publication date: Mar-2018
  • (2017)Redundant Local-Loop Insertion for Unidirectional RoutingIEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems10.1109/TCAD.2017.265181136:7(1113-1125)Online publication date: 1-Jul-2017
  • (2016)Self-aligned double patterning-aware detailed routing with double via insertion and via manufacturability considerationProceedings of the 53rd Annual Design Automation Conference10.1145/2897937.2898088(1-6)Online publication date: 5-Jun-2016
  • (2015)Simultaneous Guiding Template Optimization and Redundant Via Insertion for Directed Self-AssemblyProceedings of the IEEE/ACM International Conference on Computer-Aided Design10.5555/2840819.2840877(410-417)Online publication date: 2-Nov-2015
  • (2010)Dead via minimization by simultaneous routing and redundant via insertionProceedings of the 2010 Asia and South Pacific Design Automation Conference10.5555/1899721.1899875(657-662)Online publication date: 18-Jan-2010
  • (2010)Dead Via Minimization by Simultaneous Routing and Redundant Via Insertion2010 15th Asia and South Pacific Design Automation Conference (ASP-DAC)10.1109/ASPDAC.2010.5419806(657-662)Online publication date: Jan-2010

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