高性能有限元模拟的交互式几何修改
Interactive Geometry Modification of High Performance Finite Element Simulations
摘要：
在高性能有限元分析的背景下，随着模拟的大小增加，通过重新网格化和重新开始分析来迭代地修改计算域的成本变得时间上令人望而却步。在本文中，我们展示了一个新的交互式仿真管道，针对高性能有限元模拟的计算域是可修改的原位，也就是说，而模拟正在进行中。该流水线被设计成模块化的，使得它可以与任何现有的有限元仿真框架接口。一个服务器-客户端体系结构是用来管理现有的高性能计算资源上的仿真网格数据，而用户指定的自由形式的几何修改发生在一个单独的工作站。我们采用现有的原位可视化技术，以迅速通知用户的模拟进展，使计算转向。通过在客户端应用程序上以简化的方式表达仿真域，该管道在服务器上管理高度精细的有限元仿真域，同时在客户端应用程序上保持良好的性能。
英文摘要：
In the context of high performance finite element analysis, the cost of iteratively modifying a computational domain via re-meshing and restarting the analysis becomes time prohibitive as the size of simulations increases. In this paper, we demonstrate a new interactive simulation pipeline targeting high performance finite element simulations where the computational domain is modifiable in situ, that is, while the simulation is ongoing. This pipeline is designed to be modular so that it may interface with any existing finite element simulation framework. A server-client architecture is employed to manage simulation mesh data existing on a high performance computing resource while user-prescribed freeform geometric modifications take place on a separate workstation. We employ existing in situ visualization techniques to rapidly inform the user of simulation progression, enabling computational steering. By expressing the simulation domain in a reduced fashion on the client application, this pipeline manages highly refined finite element simulation domains on the server while maintaining good performance on the client application.
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