A STUDY OF GPU-MPI HYBRID PARALLEL COMPUTATION OF CADMAS-SURF/3D

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Other Title
  • GPUとMPIによるCADMAS-SURF/3Dのハイブリッド並列化と検討

Abstract

 We ported CADMAS-SURF/3D program into a CUDA-MPI hybrid parallel application to achieve further enhancement in execution speed, and studied it's characteristics. By eliminating the data rearrangement overhead remained in the previous paper, we achieved 800% relative speed in single process execution. By utilizing CUDA runtime enabled MPI library, we found that the porting was quite simplistic and straight forward. Even though we verified all variable contents at runtime to justify the algorithm equality between CUDA and FORTRAN, we encountered instability in computation results. But some cases indicated that further speed enhancement was quite possible with hybrid parallelism.

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Details 詳細情報について

  • CRID
    1390282680330518656
  • NII Article ID
    130004697307
  • DOI
    10.2208/jscejoe.70.i_361
  • ISSN
    21854688
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
    • KAKEN
  • Abstract License Flag
    Disallowed

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