Case study for placement solutions in ISPD11 and DAC12 routability-driven placement contests

Wen Hao Liu*, Cheng Kok Koh, Yih-Lang Li

*此作品的通信作者

研究成果: Conference contribution同行評審

17 引文 斯高帕斯(Scopus)

摘要

Routability is a critical issue in VLSI design flow. To address this issue, the routability-driven placement contests [1, 2] held at ISPD11 and DAC12 promote the development of routability-driven placers such as those in [4-6]. ISPD11 and DAC12 contests adopt metrics that are based on global routing solutions to evaluate the routability of placement solutions. However, such global-routing-based metrics typically ignore local congestion, and they cannot evaluate the actual routability effectively. In this work, we develop a translator that allows us to feed the placement solutions of mPL [3], NTUplace [4], Ripple [5], and SimPLR [6] into a commercial router for detailed routing. We then analyze the detailed routing result of each placement solution to better understand the issues that may cause routing violations. Moreover, we examine the suitability of using the ISPD11 and DAC12 metrics in predicting routability. Our findings indicated that the metrics might not reliably predict actual routability, in terms of the number of (detailed) routing violations.

原文English
主出版物標題ISPD 2013 - Proceedings of the 2013 ACM International Symposium on Physical Design
頁面114-119
頁數6
DOIs
出版狀態Published - 24 3月 2013
事件2013 ACM International Symposium on Physical Design, ISPD 2013 - Stateline, NV, United States
持續時間: 24 3月 201327 3月 2013

出版系列

名字Proceedings of the International Symposium on Physical Design

Conference

Conference2013 ACM International Symposium on Physical Design, ISPD 2013
國家/地區United States
城市Stateline, NV
期間24/03/1327/03/13

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