摘要
这里针对波动方程叠前深度偏移计算所涉及的数据,设计相应的数据文件格式,快速有效地从多文件海量数据中获取所需信息;根据不同的输入/输出数据,采用不同读写方式(串行/并行);解决了并行计算时的负载平衡以及计算中断后的数据恢复,充分提高了波动方程叠前深度偏移计算效率。
With the fast development of the high-performance and large-scale parallel computer technology, wave equation (WE) 3D prestack depth migration (PSDM) is going into the practical application in the oil exploration. 3D PSDM directly operates the large amount of seismic gather data stored on the hard disks in the multi-file forms. According to the data types involved in WE 3D PSDM, we design the corresponding data-file formats. With them, we can quickly read/write the data from the huge amount of data on the disks. Meanwhile, using different reading/writing methods (eg. sequence/parallel reading/writing) for different input/output data, the problems of load-balance and break-restoring are solved. The calculation efficiency of WE 3D PSDM is greatly improved.
出处
《物探化探计算技术》
CAS
CSCD
2005年第2期97-101,共5页
Computing Techniques For Geophysical and Geochemical Exploration
