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大地电磁测深二维反演是现有MT数据处理解释的主流,而反演的速度依赖于正演的计算精度和速度.本文在简要介绍CUDA并行计算模型的基础上,对MT二维有限单元数值模拟进行了分析,采用基于CUDA并行技术和有限元数值模拟技术,实现了基于CUDA并行计算的大地电磁二维有限元数值模拟方法.通过一个三层模型的CDUA并行算法计算结果与解析解对比,及3个复杂模型的CDUA并行算法与CPU串行算法计算结果对比分析,结果表明,这种新的数值模拟方法在保证计算精度的同时能显著提高计算速度,加速比可达20多倍.
The 2D inversion of MT data is the mainstream of the existing MT data processing interpretation, and the inversion speed depends on the forward calculation accuracy and speed.Based on the brief introduction of CUDA parallel computing model, Unit numerical simulation is carried out, and based on CUDA parallel technology and finite element numerical simulation technology, a two-dimensional finite element numerical simulation method based on CUDA parallel computation is implemented.Through a three-layer CDUA parallel algorithm to calculate the results and analytical solutions The results show that this new numerical simulation method can not only improve the computational accuracy but also improve the computational speed remarkably. The speedup ratio can reach more than 20 times .