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Process Placement in Multicore Clusters: Algorithmic Issues and Practical Techniques

delete2014-04-01
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E
Emmanuel Jeannot *
G
Guillaume Mercier
F
François Tessier
DOI:10.1109/TPDS.2013.104delete
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Abstract

Abstract

En 中文
Current generations of NUMA node clusters feature multicore or manycore processors. Programming such architectures efficiently is a challenge because numerous hardware characteristics have to be taken into account, especially the memory hierarchy. One appealing idea to improve the performance of parallel applications is to decrease their communication costs by matching the communication pattern to the underlying hardware architecture. In this paper, we detail the algorithm and techniques proposed to achieve such a result: first, we gather both the communication pattern information and the hardware details. Then we compute a relevant reordering of the various process ranks of the application. Finally, those new ranks are used to reduce the communication costs of the application.
Keywords:
Parallel programming
high performance computing
multicore processing
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Journal

IEEE Transactions on Parallel and Distributed Systems cover
IEEE Transactions on Parallel and Distributed Systems
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5.2K
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