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Communication Dans Un Congrès Année : 2009

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

Résumé

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.
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Dates et versions

inria-00392581 , version 1 (08-06-2009)
inria-00392581 , version 2 (26-11-2009)

Identifiants

  • HAL Id : inria-00392581 , version 1

Citer

Guillaume Mercier, Jérôme Clet-Ortega. Towards an efficient process placement policy for MPI applications in multicore environments. Europvm/mpi 2009, Sep 2009, Espoo, Finland. pp 104--115. ⟨inria-00392581v1⟩
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