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

• Type: Conference
• Year: 2009
• Where: PVM
• Authors: Michael Hofmann, Gudula Rünger
• Keywords: Collective Mpi Operations, Data Distribution Operations, Distributed And Parallel Computing, Distribution Operation Mpi, PVM 2009