三维等离子体粒子模拟程序的数据模型和I/O性能改进

A Data Model and I /O Performance Improvement for 3-D Plasma Simulations with Particle

文章围绕强激光与等离子体相互作用三维数值模拟程序LARED-P数据输出存在的问题,给出了基于HDF5格式的数据模型,通过将计算结果进行重新组织和管理,实现了数据的实时压缩存储和高性能并行I/O,获得了较好的空间存储效率和时间效率,同时,程序提供了灵活的数据搜索机制,能够在程序运行过程中提取数据子集,满足了可视化系统准实时读入数据的需求。

To solve some problems about output of the results of LARED-P,which is a3-D electromagnetic code for laser-plasma interaction,this paper presents an HDF5-based data model.With re-organizing and managing these data,the storage with real-time compression and high performance parallel I /O is implemented and the cost of memory and CPU time are decreased.Meanwhile,flexible mechanism for data searching is provided,which can help visualization sys-tems to retrieve data subset from the running code.