NDLI: A new global router for modern designs

Content Provider	IEEE Xplore Digital Library
Author	Jhih-Rong Gao Pei-Ci Wu Ting-Chi Wang
Copyright Year	2008
Description	Author affiliation: Synopsys Inc., Taipei (Jhih-Rong Gao; Pei-Ci Wu)
Abstract	In this paper, we present a new global router, NTHU-Route, for modern designs. NTHU-Route is based on iterative rip-ups and reroutes, and several techniques are proposed to enhance our global router. These techniques include (1) a history based cost function which helps to distribute overflow during iterative rip-ups and reroutes, (2) an adaptive multi-source multi-sink maze routing method to improve the wirelength of maze routing, (3) a congested region identification method to specify the order for nets to be ripped up and rerouted, and (4) a refinement process to further reduce overflow when iterative history based rip-ups and reroutes reach bottleneck. Compared with two state-of-the-art works on ISPD98 benchmarks, NTHU-Route outperforms them in both overflow and wirelength. For the much larger designs from the ISPD07 benchmark suite, our solution quality is better than or comparable to the best results reported in the ISPD07 routing contest.
Starting Page	232
Ending Page	237
File Size	142525
Page Count	6
File Format	PDF
ISBN	9781424419210
DOI	10.1109/ASPDAC.2008.4483948
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-03-21
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Routing History Iterative methods Delay Cost function Approximation methods Computer science Wire Transistors Very large scale integration
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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