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Task assignment by parallel simulated annealing

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3 Author(s)
Witte, E.E. ; Comput. & Commun. Res. Center, Washington Univ., St. Louis, MO, USA ; Chamberlain, R.D. ; Franklin, M.A.

Simulated annealing for obtaining approximate solutions to combinatorial optimization problems is addressed. The serial algorithm, however, can require extensive computation time. Most parallel algorithms for simulated annealing are problem-specific and/or violate the serial decision sequence, thereby allowing errors not present in the serial algorithm. Maintaining the serial sequence is necessary to prove that the algorithm converges to a global optimum solution when allowed to reach equilibrium at each temperature. A parallel algorithm which is both problem-independent and maintains the serial decision sequence is presented. The parallel algorithm uses the concurrency techniques of speculative computation to achieve speedup which can exceed log2 P, on P processors. For three problems investigated, the average speedup on eight processors was 2.6

Published in:

Computer Design: VLSI in Computers and Processors, 1990. ICCD '90. Proceedings, 1990 IEEE International Conference on

Date of Conference:

17-19 Sep 1990

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