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Erschienen in:
2010 | OriginalPaper | Buchkapitel
Load Balancing for Regular Meshes on SMPs with MPI
verfasst von : Vivek Kale, William Gropp
Erschienen in: Recent Advances in the Message Passing Interface
Verlag: Springer Berlin Heidelberg
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Domain decomposition for regular meshes on parallel computers has traditionally been performed by attempting to exactly partition the work among the available processors (now cores). However, these strategies often do not consider the inherent system noise which can hinder MPI application scalability to emerging peta-scale machines with 10000+ nodes. In this work, we suggest a solution that uses a tunable hybrid static/dynamic scheduling strategy that can be incorporated into current MPI implementations of mesh codes. By applying this strategy to a 3D jacobi algorithm, we achieve performance gains of at least 16% for 64 SMP nodes.