An Efficient Maze Routing Algorithm for Fast Global Routing
Zhaoqi Fu, Wenxin Yu, Jie Ma, Xin Cheng · Proceedings of the Great Lakes Symposium on VLSI 2022 · 2022
Maze routing remains the most time-consuming step for modern global routers. Previous works accelerate the maze routing by routing multiple regions or nets simultaneously. This paper presents a novel parallel maze router with bidirectional path search and dynamic routing scheduling, which exhibits higher efficiency than all the previous routers. On the ISPD 2008 benchmark suite, our router outperforms the fastest global routers SPRoute and FastRoute 4.1 by an average speedup of 1.95x and 10.03x, while the difference on the total overflow and wirelength is negligible.