New prospects for computational hydraulics by leveraging high-performance heterogeneous computing techniques
journal contributionposted on 2019-01-14, 10:34 authored by Qiuhua LiangQiuhua Liang, Luke Smith, Xilin Xia
In the last two decades, computational hydraulics has undergone a rapid development following the advancement of data acquisition and computing technologies. Using a finite-volume Godunov-type hydrodynamic model, this work demonstrates the promise of modern high-performance computing technology to achieve real-time flood modeling at a regional scale. The software is implemented for high-performance heterogeneous computing using the OpenCL programming framework, and developed to support simulations across multiple GPUs using a domain decomposition technique and across multiple systems through an efficient implementation of the Message Passing Interface (MPI) standard. The software is applied for a convective storm induced flood event in Newcastle upon Tyne, demonstrating high computational performance across a GPU cluster, and good agreement against crowd- sourced observations. Issues relating to data availability, complex urban topography and differences in drainage capacity affect results for a small number of areas.
This work is supported by the following projects: National Natural Science Foundation of China (NSFC) standard research award (Ref. 51379074), and the UK Natural Environment Research Council (NERC) SINATRA project (Grant NO. NE/K008781/1).
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