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Fast Fuzzy Force-Directed/Simulated Evolution Metaheuristic for Multiobjective VLSI Cell Placement

Sait, Sadiq M. and Khan, Junaid A. Fast Fuzzy Force-Directed/Simulated Evolution Metaheuristic for Multiobjective VLSI Cell Placement. In: Department of Computer Engineering, KFUPM.



VLSI standard cell placement is the process of arranging circuit components (modules) on a silicon layout. The cell placement problem is a proven NP hard combinatorial optimization problem. The complexity of this problem increases when multiple optimization objectives are considered simultaneously. In this paper, a novel technique is presented to address this hard problem, while optimizing multiple objectives. A major difficulty with such multi-objective combinatorial optimization problems is the existence of a very large solution search space, one of which is the desired optimal solution. Simulated Evolution (SE) a general iterative heuristic is used to traverse the large search space, while fuzzy logic is resorted to assist in multi-criteria decision making and overcome the imprecise nature of design information at placement stage. New fuzzy aggregation functions are proposed. SE is hybridized with force directed algorithm to speed-up the search. The proposed schemes are compared with previously presented SE based heuristics. The implementations exhibit considerable improvement in terms of both solution quality and runtime.

Item Type:Conference or Workshop Item (Other)
Divisions:College Of Computer Sciences and Engineering > Computer Engineering Dept
Creators:Sait, Sadiq M. and Khan, Junaid A.
Email:sadiq@kfupm.edu.sa, UNSPECIFIED
ID Code:194
Deposited By:AbdulRahman
Deposited On:02 Mar 2008 11:40
Last Modified:12 Apr 2011 13:07

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