Fine-Grained Data Distribution Operations for Particle Codes

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Fine-Grained Data Distribution Operations for Particle Codes
Abstract This paper proposes a new fine-grained data distribution operation MPI Alltoall specific that allows an element-wise distribution of data elements to specific target processes. This operation can be used to implement irregular data distribution operations that are required, for example, in particle codes. We present different implementation variants for MPI Alltoall specific which are based on collective MPI operations, on point-to-point communication operations, or on parallel sorting. The properties of the implementation variants are discussed and performance results with different data sets are presented. For the performance results two high scaling hardware platforms, including a Blue Gene/P system, are used. Key words: MPI, all-to-all communication, irregular communication, personalized communication, particle codes
Michael Hofmann, Gudula Rünger
Added 27 May 2010
Updated 27 May 2010
Type Conference
Year 2009
Where PVM
Authors Michael Hofmann, Gudula Rünger
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