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

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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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 acceleration, to achieve high-precision and high-efficiency solution of the 3-D seismic wave equation, greatly While improving the calculation efficiency, it can effectively improve the calculation accuracy and meet the requirements for calculation efficiency and accuracy

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