GOGLIN, Brice; MOREAUD, Stéphanie

doi:10.1016/j.jpdc.2012.09.016

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GOGLIN, Brice
Efficient runtime systems for parallel architectures [RUNTIME]
Laboratoire Bordelais de Recherche en Informatique [LaBRI]

MOREAUD, Stéphanie
Efficient runtime systems for parallel architectures [RUNTIME]
Laboratoire Bordelais de Recherche en Informatique [LaBRI]

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Journal of Parallel and Distributed Computing. 2013-02, vol. 73, n° 2, p. 176-188

Elsevier

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The multiplication of cores in today's architectures raises the importance of intra-node communication in modern clusters and their impact on the overall parallel application performance. Although several proposals focused on this issue in the past, there is still a need for a portable and hardware-independent solution that addresses the requirements of both point-to-point and collective MPI operations inside shared-memory computing nodes. This paper presents the KNEM module for the Linux kernel that provides MPI implementations with a flexible and scalable interface for performing kernel-assisted single-copy data transfers between local processes. It enables high-performance communication within most existing MPI implementations and brings significant application performance improvements thanks to more efficient point-to-point and collective operations.< Réduire

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KNEM: a Generic and Scalable Kernel-Assisted Intra-node MPI Communication Framework

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