VisIt在数值模拟软件中的应用

基于高性能计算机的科学计算可视化软件应用日益广泛,但其软件结构通常不能充分利用高性能计算环境中的各种资源,造成可视化效率不高。本文首先介绍一种分布式并行可视化工具VisIt;然后给出自主开发的数值计算集成系统的数据后处理方法;为有效管理模拟对象的计算结果,编码实现了多种数据存取管理模块,并在VisIt基础上开发了能够对数据进行读取和显示的接口程序,通过该接口可以显示多种科学数据的模拟对象信息以及诊断信息。可视化实例表明,使用基于VisIt数据后处理的数值计算系统能有效使用高性能计算环境中的资源,提高可视化效率。

Application of VisIt in Numerical Simulation Software

Visualization software for Scientific Computation is applied more widely under High-Performance Computer. But the software's structure can't utilize the resource of High-Performance Computer, which results in low efficiency of visualization. This paper firstly introduces a distributed parallel visualization tool - VisIt. Then the Post-Process method for the self-developed software is given. In order to manage the computation results of simulation objects, data access module for several data types is implemented. For reading and visualizing the data information of simulation object, the data-interface program is developed. The Visualization examples show that the numerical simulation software, with the Post-Process based on VisIt can use the resource of High-Performance Computer effectively, and visualization efficiency is also improved.