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Erschienen in:
2018 | OriginalPaper | Buchkapitel
Parallel A* for State-Space Search
verfasst von : Alex Fukunaga, Adi Botea, Yuu Jinnai, Akihiro Kishimoto
Erschienen in: Handbook of Parallel Constraint Reasoning
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A* is a best-first search algorithm for finding optimal-cost paths in graphs. A* benefits significantly from parallelism because in many applications, A* is limited by memory usage, so distributed memory implementations of A* that use all of the aggregate memory on the cluster enable us to solve problems that can not be solved by serial, single-machine implementations. We survey approaches to parallel A*, focusing on decentralized approaches to A* which partition the state space among processors. We also survey approaches to parallel, limited-memory variants of A* such as parallel IDA*.