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Based on the the MPI the 3D Wellbole electromagnetic field of parallel computing research and realization

Author: ChenLuJun
Tutor: WangXuBen;WangShiQing
School: Chengdu University of Technology
Course: Applied Computer Technology
Keywords: MPI parallel computmg borehole-surface alternating current method conjugate gradient integral equation 3-D electromagnetic modeling
CLC: TP399-C5
Type: Master's thesis
Year: 2006
Downloads: 145
Quote: 2
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Abstract


The development of computer technology has enormously stimulated the rapid growth of the computational science. However the computing speed of PC is limited by the technology and the material. As a result, PC cannot satisfy the needs of the large-scale computation in some fields today. So it is important to study the high performance computing technology. Parallel computation is one of the means to realize the high perfonnance computing.The crucial to realize the high perfonnance computing is to design effective parallel program. The tools to design parallel program include MPI (Message Passing Interface), PVM, HPF(High Performance Fortran), and so on. MPI is widely accepted by the parallel computing people and has become the parallel computing standard in message passing mode for the advantage of transportability, multifunction, and great efficiency.In this thesis, the basics of MPI are introduced, and the method of design parallel algorithm and realization are studied. Under the distribution network parallel programming environment of MPI, conjugate gradient method and borehole-surface alternating current method parallel algorithms are studied, and parallelism of them are tested and analyzed.The conjugate gradient method is the most important method of solving the large-scale linear equations about the electromagnetic field. In the thesis parallel computing about conjugate gradient method is realized through dispersed the matrix-vector multiplication.Borehole-surface alternating current method is mainly used to delimit a known hydrocarbon reservoir and detect possible hydrocarbon-bearing blocks adjacent to the known reservoir. It is regarded as an important and urgent technique for hydrocarbon exploration. According to the 3-D mesh subdivision of integral space, parallel computing about 3-D borehole-surface alternating current method is realized by domain decomposition, and then the numerical analog of 3-D borehole-surface EM realized.

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