MERCIER, Guillaume; CLET-ORTEGA, Jérôme

doi:10.1007/978-3-642-03770-2_17

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MERCIER, Guillaume
Laboratoire Bordelais de Recherche en Informatique [LaBRI]
Efficient runtime systems for parallel architectures [RUNTIME]
Ecole Nationale Supérieure d'Electronique, Informatique et Radiocommunications de Bordeaux [ENSEIRB]

CLET-ORTEGA, Jérôme
Laboratoire Bordelais de Recherche en Informatique [LaBRI]
Efficient runtime systems for parallel architectures [RUNTIME]

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Ce document a été publié dans

Recent Advances in Parallel Virtual Machine and Message Passing Interface, Recent Advances in Parallel Virtual Machine and Message Passing Interface, Europvm/mpi 2009, 2009-09-07, Espoo. 2009, vol. 5759, p. pp 104--115

Springer-Verlag

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This paper presents a method to efficiently place MPI processes on multicore machines. Since MPI implementations often feature efficient supports for both shared-memory and network communication, an adequate placement policy is a crucial step to improve applications performance. As a case study, we show the results obtained for several NAS computing kernels and explain how the policy influences overall performance. In particular, we found out that a policy merely increasing the intranode communication ratio is not enough and that cache utilization is also an influential factor. A more sophisticated policy (eg. one taking into account the architecture's memory structure) is required to observe performance improvements.< Réduire

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Towards an efficient process placement policy for MPI applications in multicore environments

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