Name
Abstract | ||
|---|---|---|
Global routing is an important step in the physical design process. In this paper, we propose a new global routing algorithm Archer, which resolves some of the most common problems with the state-of-the-art global routers. It is known that concurrent global routing algorithms are typically too expensive to be applied on today's large designs, which may contain up to a million nets. On the other hand, iterative rip-up and reroute (RNR)-based algorithms are susceptible to getting stuck in local optimal solutions. In this paper, we propose an RNR-based global routing algorithm that guides the routing iterations out of local optima through effective usage of congestion histories. We also focus on the problem of how to enable a smooth tradeoff between seemingly conflicting objectives of overflow and wirelength minimization. Furthermore, we propose a Lagrangian relaxation-based bounded-length min-cost topology improvement algorithm that enables Steiner trees to change dynamically for the purpose of congestion optimization. Our experiments on public benchmarks show the effectiveness of Archer compared to other state-of-the-art global routers. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.1109/TCAD.2009.2013991 | IEEE Trans. on CAD of Integrated Circuits and Systems |
Keywords | Field | DocType |
Steiner tree,local optimal solution,local optimum,congestion history,congestion optimization,global routing,concurrent global routing algorithm,state-of-the-art global routers,history-based global routing algorithm,new global routing algorithm,RNR-based global routing algorithm | Equal-cost multi-path routing,Multipath routing,Mathematical optimization,Link-state routing protocol,Static routing,Computer science,Steiner tree problem,Local optimum,Destination-Sequenced Distance Vector routing,Lagrangian relaxation | Journal |
Volume | Issue | ISSN |
28 | 4 | 0278-0070 |
ISBN | Citations | PageRank |
1-4244-1382-6 | 19 | 0.84 |
References | Authors | |
18 | 2 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Muhammet Mustafa Ozdal | 1 | 313 | 23.18 |
| Martin D. F. Wong | 2 | 3525 | 363.70 |