Performance Evaluation and Optimization of MagnetoHydroDynamic Simulation for Planetary Magnetosphere with Xeon Phi KNL

Keiichiro Fukazawa, Takeshi Soga, Takayuki Umeda, Takeshi Nanri

    Research output: Chapter in Book/Report/Conference proceedingChapter

    Abstract

    The magnetohydrodynamic (MHD) simulation is often applied to study the global dynamics and configuration of a planetary magnetosphere for the space weather. In this paper, the computational performance of MHD code is evaluated with 128 nodes Xeon Phi KNL of Cray XC40. As the results, the 2D and 3D domain decompositions of SoA (structure of array) make the effective performances and AoS (array of structure) and hybrid parallel computation become low performances. Adding the performance optimizations for Xeon Phi to our MHD simulation code, then we have obtained 2.4 % increase of execution efficiency in total and we achieved 3 TFlops performance gain using 128 nodes.

    Original languageEnglish
    Title of host publicationParallel Computing is Everywhere
    EditorsGerhard R. Joubert, Patrizio Dazzi, Frans Peters, Marco Danelutto, Sanzio Bassini
    PublisherIOS Press BV
    Pages178-187
    Number of pages10
    ISBN (Electronic)9781614998426
    DOIs
    Publication statusPublished - 2018

    Publication series

    NameAdvances in Parallel Computing
    Volume32
    ISSN (Print)0927-5452
    ISSN (Electronic)1879-808X

    All Science Journal Classification (ASJC) codes

    • Computer Science(all)

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