Development of the RIAM-COMPACT using a PC cluster : Part.2 Comparison of the elapsed time in scalar parallel computers

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  • Uchida Takanori
    Research Institute for Applied Mechanics, Kyushu University
  • Oya Yuji
    Research Institute for Applied Mechanics, Kyushu University

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  • PCクラスタを用いた風況予測シミュレータRIAM-COMPACTの開発 : その2.スカラー並列計算機における経過時間の比較
  • PC クラスタ オ モチイタ フウキョウヨソク シミュレータ RIAM COMPACT ノ カイハツ ソノ 2 スカラー ヘイレツ ケイサンキ ニ オケル ケイカ ジカン ノ ヒカク

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We are developing the numerical model called the RIAM-COMPACT (Research Institute for Applied Mechanics, Kyushu University, Computational Prediction of Airflow over Complex Terrain). The object domain of this numerical model is from several m to several km, and can predict the airflow over complex terrain with high precision. Since we put this numerical model in practical use, we are considering introduction of a PC cluster and a SMP cluster. We have already showed the comparison of the elapsed time in various computers as the first step. In this paper, we have examined the elapsed time in scalar parallel computers, such as a PC cluster and a SMP cluster, by using a MPI (Message Passing Interface), as the second step. Consequently, it became clear that the newest small scalar parallel computers have about the same performance as a vector supercomputer.

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