NCTU-GR 2.0: Multithreaded collision-aware global routing with bounded-length maze routing

Wen Hao Liu*, Wei Chun Kao, Yih-Lang Li, Kai Yuan Chao

*此作品的通信作者

研究成果: Article同行評審

130 引文 斯高帕斯(Scopus)

摘要

Modern global routers employ various routing methods to improve routing speed and quality. Maze routing is the most time-consuming process for existing global routing algorithms. This paper presents two bounded-length maze routing (BLMR) algorithms (optimal-BLMR and heuristic-BLMR) that perform much faster routing than traditional maze routing algorithms. In addition, a rectilinear Steiner minimum tree aware routing scheme is proposed to guide heuristic-BLMR and monotonic routing to build a routing tree with shorter wirelength. This paper also proposes a parallel multithreaded collision-aware global router based on a previous sequential global router (SGR). Unlike the partitioning-based strategy, the proposed parallel router uses a task-based concurrency strategy. Finally, a 3-D wirelength optimization technique is proposed to further refine the 3-D routing results. Experimental results reveal that the proposed SGR uses less wirelength and runs faster than most of other state-of-the-art global routers with a different set of parameters , , , . Compared to the proposed SGR, the proposed parallel router yields almost the same routing quality with average 2.71 and 3.12-fold speedup on overflow-free and hard-to-route cases, respectively, when running on a 4-core system.

原文English
文章編號6504553
頁(從 - 到)709-722
頁數14
期刊IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
32
發行號5
DOIs
出版狀態Published - 2013

指紋

深入研究「NCTU-GR 2.0: Multithreaded collision-aware global routing with bounded-length maze routing」主題。共同形成了獨特的指紋。

引用此