IMPROVEMENT OF EFFICIENCY OF WIDE-AREA TSUNAMI SIMULATION THROUGH POLYGONAL REGIONS AND MPI-PARALLELIZATION
-
- INOUE Takuya
- 東北大学大学院 工学研究科
-
- ABE Takashi
- 東北大学 災害科学国際研究所
-
- KOSHIMURA Shunichi
- 東北大学 災害科学国際研究所
-
- MUSA Akihiro
- 日本電気株式会社 第一官庁ソリューション事業部
-
- MURASHIMA Yoichi
- 東北大学 災害科学国際研究所
-
- KOBAYASHI Hiroaki
- 東北大学 大学院情報科学研究科
Bibliographic Information
- Other Title
-
- 多角形領域接続・MPI並列による広域津波解析の効率化
- タカッケイ リョウイキ セツゾク ・ MPI ヘイレツ ニ ヨル コウイキ ツナミ カイセキ ノ コウリツカ
Search this article
Abstract
This paper elucidated that it requires 2 Pflop/s supercomputer resources to complete tsunami inundation forecast for the entire coast of Japan at resolution of 10-meter grids within 10 minutes if we adopt a numerical model solving non-linear shallow water equations. Therefore, we improved efficiency of the model by extending the geometry of calculation regions from rectanglar to polygonal so that deployment of high-resolution grids is confined to coastal lowland, and validated its accuracy in comparison to the existing model. A wide-area tsunami simulation on the prefectural scale resulted in over 3 times more efficient, and the possibility of nation-wide tsunami inundation forecast was indicated.
Journal
-
- Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
-
Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 72 (2), I_373-I_378, 2016
Japan Society of Civil Engineers
