Fast crustal deformation computing method for multiple computations accelerated by a graphics processing unit cluster
Fast crustal deformation computing method for multiple computations accelerated by a graphics processing unit cluster
复制标题
图形处理单元集群加速多次计算的地壳形变快速计算方法
DOI：
10.1093/gji/ggx203
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发表时间：
2017
影响因子：
2.8
通讯作者：
Hori Muneo
中科院分区：
文献类型：
--
作者：
Yamaguchi Takuma;Ichimura Tsuyoshi;Yagi Yuji;Agata Ryoichiro;Hori Takane;Hori Muneo
随着高分辨率观测数据变得越来越普遍，对使用三维高保真模型对地壳形变进行数值模拟的需求也在增加。为了提高数值模拟的效率和计算成本，我们开发了一个使用图形处理单元(GPU)和中央处理单元的异质计算快速求解器，并将该求解器用于地壳形变计算。该解算器是基于迭代解算器设计的，因此使用GPU可以更快地计算出大部分计算。为了验证所提出的求解器的实用性，我们对同震滑动分布估计进行了数值模拟，这需要计算360000次地壳形变和82 196 106个自由度。
As high-resolution observational data become more common, the demand for numerical simulations of crustal deformation using 3-D high-fidelity modelling is increasing. To increase the efficiency of performing numerical simulations with high computation costs, we developed a fast solver using heterogeneous computing, with graphics processing units (GPUs) and central processing units, and then used the solver in crustal deformation computations. The solver was based on an iterative solver and was devised so that a large proportion of the computation was calculated more quickly using GPUs. To confirm the utility of the proposed solver, we demonstrated a numerical simulation of the coseismic slip distribution estimation, which requires 360 000 crustal deformation computations with 82 196 106 degrees of freedom.