Article ID Journal Published Year Pages File Type
1142322 Operations Research Letters 2013 7 Pages PDF
Abstract

For stochastic mixed-integer programs, we revisit the dual decomposition algorithm of Carøe and Schultz from a computational perspective with the aim of its parallelization. We address an important bottleneck of parallel execution by identifying a formulation that permits the parallel solution of the master program by using structure-exploiting interior-point solvers. Our results demonstrate the potential for parallel speedup and the importance of regularization (stabilization) in the dual optimization. Load imbalance is identified as a remaining barrier to parallel scalability.

Related Topics
Physical Sciences and Engineering Mathematics Discrete Mathematics and Combinatorics
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