Real-time tsunami inundation forecast system for tsunami disaster prevention and mitigation

Real-time tsunami inundation forecast system for tsunami disaster prevention and mitigation
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实时海啸淹没预报系统,用于海啸防灾减灾

DOI:
10.1007/s11227-018-2363-0
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发表时间:
2018
期刊:
The Journal of Supercomputing
影响因子:
--
通讯作者:
Kobayashi Hiroaki
Kobayashi Hiroaki
中科院分区:
--
文献类型:
--
作者:
Musa Akihiro;Watanabe Osamu;Matsuoka Hiroshi;Hokari Hiroaki;Inoue Takuya;Murashima Yoichi;Ohta Yusaku;Hino Ryota;Koshimura Shunichi;Kobayashi Hiroaki

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印度尼西亚、智利和日本发生的海啸灾害造成了严重的人员伤亡和社会基础设施的破坏。因此,全世界迫切需要海啸预报系统。我们开发了实时海啸淹没预报系统,可以在不到20分钟的时间内完成沿海城市10 m网格级别的海啸淹没和破坏预报。由于海啸淹没和破坏模拟是一个矢量化的内存密集型程序,我们将NEC的矢量超级计算机SX-ACE。在本文中,我们提出了我们的系统的概述。此外,我们描述了SX-ACE上的程序的实现,并评估其性能的SX-ACE的情况下,使用基于Intel Xeon的系统和K计算机的比较。然后,我们澄清,履行的实时海啸淹没预报系统需要一个系统,高性能的核心连接到存储器子系统在一个高的存储器带宽,如SX-ACE。
The tsunami disasters that occurred in Indonesia, Chile, and Japan have inflicted serious casualties and damaged social infrastructures. Tsunami forecasting systems are thus urgently required worldwide. We have developed a real-time tsunami inundation forecast system that can complete a tsunami inundation and damage forecast for coastal cities at the level of 10-m grid size in less than 20 min. As the tsunami inundation and damage simulation is a vectorizable memory-intensive program, we incorporate NEC’s vector supercomputer SX-ACE. In this paper, we present an overview of our system. In addition, we describe an implementation of the program on SX-ACE and evaluate its performance of SX-ACE in comparison with the cases using an Intel Xeon-based system and the K computer. Then, we clarify that the fulfillment of a real-time tsunami inundation forecast system requires a system with high-performance cores connected to the memory subsystem at a high memory bandwidth such as SX-ACE.
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