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

Abstract : 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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Conference papers
M. Ropo and al. Europvm/mpi 2009, Sep 2009, Espoo, Finland. Springer-Verlag, 5759, pp 104--115, 2009, Lecture Notes in Computer Science. <10.1007/978-3-642-03770-2_17>
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https://hal.inria.fr/inria-00392581
Contributor : Guillaume Mercier <>
Submitted on : Thursday, November 26, 2009 - 10:50:44 AM
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Guillaume Mercier, Jérôme Clet-Ortega. Towards an efficient process placement policy for MPI applications in multicore environments. M. Ropo and al. Europvm/mpi 2009, Sep 2009, Espoo, Finland. Springer-Verlag, 5759, pp 104--115, 2009, Lecture Notes in Computer Science. <10.1007/978-3-642-03770-2_17>. <inria-00392581v2>

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