heuristics

Parallel heuristics for bandwidth reduction of sparse matrices with IBM SP2 and Cray T3D

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Parallel heuristics for bandwidth reduction of sparse matrices with IBM SP2 and Cray T3D by Alessandra Esposito, Luciano Tarricone.

The solution of a sparse linear system equations is the core problem in many mathematical models. In this paper strategy proposed to reduce bandwidth matrix, so that direct banded solvers can be used with high efficiency. A combinatorial optimization method implemented on an IBM SP2 (8 nodes) and Cray T3D (64 perform global minimization, superior previous constructive approaches. Examples applications microwave circuit design demonstrate efficiency its parallel implementation, as well versatility.KeywordsFinite Element Method AnalysisParallel PlatformBandwidth ReductionSingle Program Multiple DataElectromagnetic CircuitThese keywords were added by machine not authors. This process experimental may updated learning algorithm improves.

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Alternative Heuristics for Large Scale Capacitated Requirements Planning Systems

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Alternative Heuristics for Large Scale Capacitated Requirements Planning Systems by Johannes E. Harl.

Performance improvement for requirements planning systems is an issue which receives wide interest. Many programming approaches have been proposed to improve material procedures. However, most of them appear be too complex large manufacturing problems. Alternatively it might promising explore the integration materials and capacity planning. Several simple heuristics integrated are suggested. offered balance load in several procedures presented adjust planned so that system will execute more smoothly. An industrial example supports adequacy general concepts provided this research. Results demonstrate these heuristics, illustrate ease implementing into any MRP system.

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