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Paper Abstract and Keywords
Presentation 2022-11-28 13:55
A Routing Method by SAT for Set-Pair Routing Problem
Koki Nagakura, Rintaro Yokoya, Kunihiro Fujiyoshi (Tokyo Univ of A and T) VLD2022-21 ICD2022-38 DC2022-37 RECONF2022-44
Abstract (in Japanese) (See Japanese page) 
(in English) Set-pair routing problem is a single-layer routing problem in which a one-to-one connection is made between equal numbers of source and sink terminals in arbitrary combinations with, requiring reduction wire length between connections and their length differences. In methods for solving set-pair routing problem, a method that represents routing graph as a flow graph and controls the wire length using ILP has been proposed.
Incidentally, it has been reported that the SAT-based method is faster than the ILP-based method for the Numberlink, which is considered to have a high affinity with routing problems. Therefore, we propose a method for solving set-pair routing problem by SAT. We propose a modified formulation for Numberlink, and a formulation uses fewer variables that takes advantage of its special characteristics of set-pair routing problem. Additionally, by adding constraints to control the wire length, we solve set-pair routing problem by SAT solver. Then, experimental results show the effectiveness of the proposed method.
Keyword (in Japanese) (See Japanese page) 
(in English) Set-Pair Routing Problem / SAT / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 283, VLD2022-21, pp. 13-18, Nov. 2022.
Paper # VLD2022-21 
Date of Issue 2022-11-21 (VLD, ICD, DC, RECONF) 
ISSN Online edition: ISSN 2432-6380
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Download PDF VLD2022-21 ICD2022-38 DC2022-37 RECONF2022-44

Conference Information
Committee VLD DC RECONF ICD IPSJ-SLDM  
Conference Date 2022-11-28 - 2022-11-30 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) Design Gaia 2022 -New Field of VLSI Design- 
Paper Information
Registration To VLD 
Conference Code 2022-11-VLD-DC-RECONF-ICD-SLDM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Routing Method by SAT for Set-Pair Routing Problem 
Sub Title (in English)  
Keyword(1) Set-Pair Routing Problem  
Keyword(2) SAT  
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1st Author's Name Koki Nagakura  
1st Author's Affiliation Tokyo University of Agriculture and Technology (Tokyo Univ of A and T)
2nd Author's Name Rintaro Yokoya  
2nd Author's Affiliation Tokyo University of Agriculture and Technology (Tokyo Univ of A and T)
3rd Author's Name Kunihiro Fujiyoshi  
3rd Author's Affiliation Tokyo University of Agriculture and Technology (Tokyo Univ of A and T)
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Date Time 2022-11-28 13:55:00 
Presentation Time 25 minutes 
Registration for VLD 
Paper # VLD2022-21, ICD2022-38, DC2022-37, RECONF2022-44 
Volume (vol) vol.122 
Number (no) no.283(VLD), no.284(ICD), no.285(DC), no.286(RECONF) 
Page pp.13-18 
#Pages
Date of Issue 2022-11-21 (VLD, ICD, DC, RECONF) 


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