Affiliation:
1. Hunan University; National University of Defense Technology, China
2. National University of Defense Technology, China
3. Chinese University of Hong Kong, China
Abstract
Routability is one of the most important problems in high-performance circuit designs. From the viewpoint of placement design, two major factors cause routing congestion: (i) interconnections between cells and (ii) connections on macro blockages. In this article, we present a routability-driven placer, Ripple 2.0, which emphasizes both kinds of routing congestion. Several techniques will be presented, including (i) cell inflation with routing path consideration, (ii) congested cluster optimization, (iii) routability-driven cell spreading, and (iv) simultaneous routing and placement for routability refinement. With the official evaluation protocol, Ripple 2.0 outperforms other published academic routability-driven placers. Compared with top results in the ICCAD 2012 contest, Ripple 2.0 achieves a better detailed routing solution obtained by a commercial router.
Funder
National Natural Science Foundation of China
Publisher
Association for Computing Machinery (ACM)
Subject
Electrical and Electronic Engineering,Computer Graphics and Computer-Aided Design,Computer Science Applications
Cited by
11 articles.
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