基于科学计算组件规范的高性能大地电磁正演模型研究*

为了提高基于有限元法构建的大地电磁正演模型的计算性能,以及解决模型计算的复杂性问题,提出了一种基于美国新近提出的大规模科学计算领域组件规范CCA(Common Component Architecture)构建的组件化分布式并行大地电磁正演MT模型。首先,基于CCA规范定义MT组件服务端口,定义MT组件； 其次,采用有限元方法将Maxwell方程离散为线性系统,采用GreenField算法对其求解,设计了一种频率域分解策略实现了一个分布式并行MT模型；最后,采用Babel编译生成了一个分布式并行MT模型组件。实验结果表明,该方法所构建的MT模型组件具有较高的计算性能、灵活性和可扩展性。

Research on High-Performance Magnetotelluric Forward Modeling Based On Scientific Computing Component Specification

In order to improve the computing performance of the magnetotelluric forward model based on finite element method, and to solve the complexity of the computing, this paper proposed a componentized a magnetotelluric forward model. It based on CCA(Common Component Architecture) which is a component specification for large-scale scientific computing. Firstly, It defined the service ports of MT component and the MT component; secondly, discrete the Maxwell equation to a linear system, used GreenField algorithm to solve it, and designed a decomposition strategy for frequency domain to implement a distributed parallel MT model; finally, created a distributed parallel MT component using Babel. Experiment results showed that the MT component based on proposed method has high computing performance, flexibility and scalability.