Location of Repository

Practical approximation algorithms for separable packing linear programs

By Feodor F. Dragan, Andrew B. Kahng, Ioni. Măndoiu, Sudhakar Muddu and Alexander Zelikovsky

Abstract

We describe fully polynomial time approximation schemes for generalized multicommodity flow problems arising in VLSI applications such as Global Routing via Buffer Blocks (GRBB). We extend Fleischer’s improvement [7]ofGargandKönemann [8] fully polynomial time approximation scheme for edge capacitated multicommodity flows to multiterminal multicommodity flows in graphs with capacities on vertices and subsets of vertices. In addition, our problem formulations observe upper bounds and parity constraints on the number of vertices on any source-to-sink path. Unlike previous works on the GRBB problem [5, 17], our algorithms can take into account (i) multiterminal nets, (ii) simultaneous buffered routing and compaction, and (iii) buffer libraries. Our method outperforms existing algorithms for the problem and has been validated on top-level layouts extracted from a recent high-end microprocessor design

Year: 2011
OAI identifier: oai:CiteSeerX.psu:10.1.1.189.4098
Provided by: CiteSeerX
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://citeseerx.ist.psu.edu/v... (external link)
  • http://vlsicad.ucsd.edu/Public... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.