L. Boillot, E. Agullo, G. Bosilca, H. Calandra
Reverse Time Migration technique produces underground images using wave propagation. A discretization based on the Discontinuous Galerkin Method unleashes a massively parallel elastodynamics simulation, an interesting feature for current and future architectures. In this work, we propose to combine two recent HPC techniques to achieve a high level of efficiency: the use of runtimes (StarPU […]
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B. Han, X.Z. Lu, Z. Xu
In recent years, refined building models have been widely used for urban regional seismic damage prediction, but its application is limited due to the computing workload and the cost when it is implemented on traditional CPU platform. However, GPU computing technology, which is developing rapidly in these years, provides a feasible way to solve this […]
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Chang Cai, Haiqing Chen, Ze Deng, Dan Chen, Samee U. Khan, Ke Zeng, Minxiao Wu
Finite difference is a simple, fast and effective numerical method for seismic wave modeling, and has been widely used in forward waveform inversion and reverse time migration. However, intensive calculation of three-dimensional seismic forward modeling has been restricting the industrial application of 3D pre-stack reverse time migration and inversion. Aiming at this problem, in this […]
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Bo Han, Xinzheng Lu, Zhen Xu, Yi Li
Refined models have been an important development trend of urban regional seismic damage prediction. However, the application of refined models has been limited due to their high computational cost if implemented on traditional Central Processing Unit (CPU) platforms. In recent years, Graphics Processing Unit (GPU) technology has been developed and applied rapidly due to its […]
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Shenyi Song, Tingxing Dong, Yichen Zhou, David A. Yuen, Zhonghua Lu
The method of Support Operator(SOM) is a numerical method based on finite difference method. We use SOM to simulate seismic wave propagation by solving the three dimension viscoelastic equations. The Support Operator Rupture Dynamics(SORD) has been proved to be highly scalable in large-scale multi-processors computing. This paper discusses accelerating SORD on multi-GPU system using NVIDIA […]
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Yichen Zhou, Shenyi Song, Tingxing Dong, David A. Yuen
The Support Operator Method (SOM) is a numerical method based on finite difference method. The Support Operator Rupture Dynamics (SORD) is an application based on it. It can be used in simulation of 3D elastic wave propagation and spontaneous rupture on hexahedral mesh. It can be applied to various surface boundary conditions. The original application […]
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N. Nakata, T. Tsuji, T. Matsuoka
Numerical simulation in exploration geophysics provides important insights into subsurface wave propagation phenomena. Although elastic wave simulations take longer to compute than acoustic simulations, an elastic simulator can construct more realistic wavefields including shear components. Therefore, it is suitable for exploration of the responses of elastic bodies. To overcome the long duration of the calculations, […]
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Zhangang Wang, Suping Peng, Tao Liu
The staggered-grid finite difference (FD) method demands significantly computational capability and is inefficient for seismic wave modelling in 2-D viscoelastic media on a single PC. To improve computation speedup, a graphic processing units (GPUs) accelerated method was proposed, for modern GPUs have now become ubiquitous in desktop computers and offer an excellent cost-to-performance-ratio parallelism. The […]
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Jens Krueger, David Donofrio, John Shalf, Marghoob Mohiyuddin, Samuel Williams, Leonid Oliker, Franz-Josef Pfreundt
Reverse Time Migration (RTM) has become the standard for high-quality imaging in the seismic industry. RTM relies on PDE solutions using stencils that are 8th order or larger, which require large-scale HPC clusters to meet the computational demands. However, the rising power consumption of conventional cluster technology has prompted investigation of architectural alternatives that offer […]
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Thomas Grosser, Alexandros Gremm, Sebastian Veith, Gerald Heim, Wolfgang Rosenstiel, Victor Medeiros, Manoel Eusebio de Lima
Large heterogeneous data centers of today lack methods to appraise the best fitting solutions regarding, among others, hardware acquisition cost, development time, and performance. Especially resource intensive applications benefit from increased data center utilization to leverage heterogeneous resources and accelerators. In this paper, we implement various methods to accelerate a seismic modeling application, which is […]
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Rached Abdelkhalek, Henri Calendra, Olivier Coulaud, Jean Roman, Guillaume Latu
We have designed a fast parallel simulator that solves the acoustic wave equation on a GPU cluster. Solving the acoustic wave equation in an oil exploration industrial context aims at speeding up seismic modeling and Reverse Time Migration. We consider a finite difference approach on a regular mesh, in both 2D and 3D cases. The […]
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T. Danek
General-purpose computing on graphics processing units (GPGPU) is a fast developing method of high performance computing (HPC). In some cases even a low-end video card can be several to dozens times faster than a modem CPU core. Seismic wave filed modeling is one of the problems of this kind. But in some modern methods of […]
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