Mpi allgather - PowerPoint PPT Presentation

MPI Collective Communications

MPI Collective Communications. Overview. Collective communications refer to set of MPI functions that transmit data among all processes specified by a given communicator. Three general classes Barrier Global communication (broadcast, gather, scatter) Global reduction

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Hardware Environment

Hardware Environment. VIA cluster - 8 nodes Two 1.0 GHz VIA-C3 processors each node Connected with Gigabit Ethernet Linux kernel – 2.6.8-1-smp Blade Server – 5 nodes two 3.0 GHz Intel Xeon processors each node each Xeon processor is Hyper-Threading Connected with Gigabit Ethernet

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501 views • 32 slides

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