Closing the gap between global and detailed placement: Techniques for improving routability

Chun Kai Wang, Chuan Chia Huang, Sean Shih Ying Liu, Ching Yu Chin, Sheng Te Hu, Wei Chen Wu, Hung-Ming Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

21 Scopus citations

Abstract

Improving routability during both global and detailed routing stage has become a critical problem in modern VLSI design. In this work, we propose a placement framework that offers a complete coverage solution in considering both global and detailed routing congestion. A placement migration strategy is proposed, which improves detailed routing congestion while preserving the placement integrity that is optimized for global routability. Using the benchmarks released from ISPD2014 Contest, practical design rules in advanced node design are considered in our placement framework. Evaluation on routability of our placement framework is conducted using commercial router provided by the 2014 ISPD Contest organizers. Experimental results show that the proposed methodologies can effectively improve placement solutions for both global and detailed router.

Original languageEnglish
Title of host publicationISPD 2015 - Proceedings of the ACM International Symposium on Physical Design 2015
PublisherAssociation for Computing Machinery
Pages149-156
Number of pages8
ISBN (Electronic)9781450333993
DOIs
StatePublished - 29 Mar 2015
Event18th ACM International Symposium on Physical Design, ISPD 2015 - Monterey, United States
Duration: 29 Mar 20151 Apr 2015

Publication series

NameProceedings of the International Symposium on Physical Design
Volume29-March-2015

Conference

Conference18th ACM International Symposium on Physical Design, ISPD 2015
CountryUnited States
CityMonterey
Period29/03/151/04/15

Keywords

  • Placement migration
  • Routability

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