Multi-core multi-node parallel three-dimensional seismic wave field generation method and system

A seismic wave field, multi-node technology, applied in seismic signal processing and other directions, to ensure stable computing, optimized parallel architecture, and high precision

Inactive Publication Date: 2018-01-09
PEKING UNIV
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Problems solved by technology

[0023] In order to solve the problem of computational efficiency, the present invention provides a multi-core multi-node parallel 3D seismic wave field generation method and system, based on high-order finite difference and multi-core multi-node parallel accelerat

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  • Multi-core multi-node parallel three-dimensional seismic wave field generation method and system
  • Multi-core multi-node parallel three-dimensional seismic wave field generation method and system
  • Multi-core multi-node parallel three-dimensional seismic wave field generation method and system

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Embodiment Construction

[0058] Below in conjunction with accompanying drawing, further describe the present invention through embodiment, but do not limit the scope of the present invention in any way.

[0059] The present invention provides a multi-core multi-node parallel three-dimensional seismic wave field generation method and system, based on high-order finite difference and MPI / OpenMP multi-core multi-node hybrid parallel acceleration, and performs high-order finite difference and multi-core multi-node parallel acceleration on the seismic wave propagation equation Simulate to obtain high-precision exploration seismic wave propagation data, thereby generating ground seismic record data and wave field slice results with high precision and high efficiency, thereby realizing high-precision and high-efficiency solution of the 3D seismic wave equation, greatly improving the calculation efficiency and at the same time, The purpose of ensuring the most effective precision requirements.

[0060] In the...

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Abstract

The invention discloses a multi-core multi-node parallel three-dimensional seismic wave field generation method and system. High-precision and high-efficiency solving of a three-dimensional seismic wave equation can be realized based on high-order finite difference and multi-core multi-node parallel acceleration. The method comprises the steps that data information is acquired; the initial condition, the generation boundary condition and the algorithm stability condition of a seismic wave propagation three-dimensional forward simulation model are determined, and high-order finite difference and numerical simulation are performed on the seismic wave propagation equation; a hybrid multi-core multi-node parallel forward simulation algorithm structure based on MPI/OpenMP is designed through combination of the processing capacity of the MPI for multi-node parallel and OpenMP for multi-core computing; and multi-gun data cyclic parallel computing is controlled by the MPI, and the multi-gun wave field slice result and the ground seismic record data are outputted to simulate and generate the exploration seismic wave field. The computing efficiency can be greatly enhanced and the computing accuracy can be effectively enhanced so that the requirements of three-dimensional seismic wave field generation for the computing efficiency and accuracy can be met.

Description

technical field [0001] The invention belongs to the technical field of numerical simulation and high-performance computing, and relates to a seismic wave field forward modeling method, in particular to a three-dimensional seismic wave field forward modeling method based on multi-core and multi-node parallel acceleration and a system thereof. Background technique [0002] Seismic wavefield forward modeling is a numerical simulation method that can effectively reflect the structural changes of underground media. With the development of oil and gas exploration and development technology and the improvement of computer computing power, the method of seismic wave field forward modeling has been widely used. [0003] Seismic wave field numerical forward modeling is a technology that uses theoretical calculation methods to study the propagation law of seismic waves in the underground medium and obtain artificially synthesized seismic records when the structure and parameters of the...

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Application Information

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IPC IPC(8): G01V1/30G01V1/34
Inventor 胡天跃王为中李劲松
Owner PEKING UNIV
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