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A VLSI Implementation of the Simplex Algorithm

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2 Author(s)
Bertossi, A.A. ; Department of Computer Science, University of Pisa ; Bonuccelli, M.A.

The use of a special-purpose VLSI chip for solving a linear programming problem is presented. The chip is structured as a mesh of trees and is designed to implement the well-known simplex algorithm. A high degree of parallelism is introduced in each pivot step, which can be carried out in O (log n) time using an m × n mesh of trees having an O(mn log m log3 n) area where m − 1 and n − 1 are the number of constraints and variables, respectively. Two variants of the simplex algorithm are also considered: the two-phase method and the revised one. The proposed chip is intended as being a possible basic block for a VLSI operations research machine.

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Computers, IEEE Transactions on  (Volume:C-36 ,  Issue: 2 )