NTHU-Route 2.0

Authors: Yen-Jung Chang, Yu-Ting Lee, Tsung-Hsien Lee, Jhih-Rong Gao, Pei-Ci Wu, and Ting-Chi Wang.
Contact: NTHU.Route@gmail.com

Introduction

NTHU-Route 2.0 is a fast and stable global router. It improves the solution quality and runtime of NTHU-Route by the following enhancements: (1) a new history based cost function, (2) new ordering methods for congested region identification and rip-up and reroute, and (3) two implementation oriented techniques. At the ISPD 2008 Global Routing Contest, NTHU-Route 2.0 generated the best solutions for 11 of 16 benchmarks among all participating global routers and won the 1st place.

Experienmental results (as of 10/20/2008)

We tested NTHU-Route 2.0 on ISPD'08 benchmarks in a 2.2-GHz AMD machine with 8GB of memory, and the latest experimental results are given below.

Benchmark
NTHU-Route 2.0
Output Data
TOF
WL(e5)
cpu(min)
adaptec1
0
53.44
10.0
adaptec2
0
52.29
2.1
adaptec3
0
131.01
10.9
adaptec4
0
121.69
2.6
adaptec5
0
155.38
23.0
bigblue1
0
55.95
13.7
bigblue2
0
90.59
8.5
bigblue3
0
130.68
5.0
bigblue4
160
230.90
82.2
newblue1
0
46.53
6.2
newblue2
0
75.70
1.2
newblue3
31454
106.53
122.4
newblue4
138
130.46
96.7
newblue5
0
231.58
19.4
newblue6
0
176.89
18.1
newblue7
54
355.22
107.8

Related publications

  • T.-H. Lee and T.-C. Wang, ¡§Robust Layer Assignment for Via Optimization in Multi-layer Global Routing,¡¨ in Proceedings of International Symposium on Physical Design (ISPD), San Diego, California, USA, March 2009, pp. 159-166. (pdf)
  • Yen-Jung Chang, Yu-Ting Lee, and Ting-Chi Wang, ¡§NTHU-Route 2.0: A Fast and Stable Global Router,¡¨ in Proceedings of International Conference on Computer-Aided Design (ICCAD), San Jose, CA, USA, November 2008, pp. 338-343 (pdf)
  • Tsung-Hsien Lee and Ting-Chi Wang, ¡§Congestion-Constrained Layer Assignment for Via Minimization in Global Routing,¡¨ IEEE Transactions on Computer-Adided Design of Integrated Circuits and Systems, September 2008, pp. 1643-1656 (pdf)
  • Jhih-Rong Gao, Pei-Ci Wu, and Ting-Chi Wang, ¡§A New Global Router for Modern Designs,¡¨ in Proceedings of Asia and South Pacific Design Automation Conference, Seoul, Korea, 2008, pp. 232¡V237 (pdf)

Application for source code download

Please fill out the following agreement form; after we receive it, we will e-mail you how to download the source code of NTHU-Route 2.0.

License terms

READ THIS LICENSE AGREEMENT CAREFULLY BEFORE USING THIS PRODUCT. BY USING THIS PRODUCT YOU INDICATE YOUR ACCEPTANCE OF THE TERMS OF THE FOLLOWING AGREEMENT. THESE TERMS APPLY TO YOU AND ANY SUBSEQUENT LICENSEE OF THIS PRODUCT.

License Agreement for NTHU-Route 2.0

Copyright (c) 2008 by Yen-Jung Chang, Yu-Ting Lee, Tsung-Hsien Lee, Jhih-Rong Gao, Pei-Ci Wu, and Ting-Chi Wang ("Authors")
http://www.cs.nthu.edu.tw/~tcwang/nthuroute/ ("URL")
All right reserved

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
  2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
  3. Neither the names nor any trademark of the Authors may be used to endorse or promote products derived from this software without specific prior written permission.
  4. Use is limited to academic research groups only. Users who are interested in industry or commercial purposes must notify Authors and request separate license agreement.
  5. Redistributions of the Code in executable form, or a program dependent upon the Code, must show at launch a prominent display (e.g., splash screen or banner text) of the copyright information, including Authors' attribution, shown above.

THIS FREE SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR ANY CONTRIBUTOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, EFFECTS OF UNAUTHORIZED OR MALICIOUS NETWORK ACCESS; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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Last updated: 3/1/2010