Research on Numerical Simulation Metadata

In many research fields of numerical simulations, programs of scientific computing often produce a large amount of simulation simulation data with complex structure and lacking for explaining information. It is a fatal bottleneck for scientists to organize and manage such large-scale simulation data. This paper takes typical numerical simulation procedure and its result data as the application backgrounds, provides the definition and classification of metadata which faces to the numerical simulation, puts forward the method to distinguish the characteristics of various of data documents. The functions of collecting metadata online and storage them automatically are realized by imbedding thread task module in the interface of access data. I.e. the metadata are stored into the database while the calculation results in each step of outputting time are sent to the file system. In addition, a scientific calculating metadata management prototype system was designed, the users can browse and inquire about the metadata through webs, and further obtain and analyze the distributed numerical simulations data, carry on the inquiries about space scope and physical quantity ranges and its visualization in which they are interested, thus offers the users the services which are top-graded, simple to use and with data as its core. Simultion results can be look over and trace conveniently and real-timely by the researchers in this field, and the analysis and assessment ability to the calculation result can be improved efficiently.