【摘要】 传统的地震资料处理系统以地震道为数据输入输出单元,难以集成基于道集的复杂处理算法,并且数据I/O效率低.提出基于道集流的数据输入输出模式,采用道头信息索引数据库,可以按关键字进行道集快速筛选和排序;给出文件锁、随机写、独立输出3种数据文件输出方式,解决数据文件并行输出时写数据冲突问题,实现多个计算节点并行数据输出;建立独立的数据输入、输出进程,利用数据缓冲机制,实现计算进程与数据输入、输出进程的并行运行.地震资料处理系统MPS的应用结果表明,基于道集流的地震数据I/O速度得到较大提高.更多还原

【Abstract】 Inputting and outputting data in seismic trace,it is difficult for tradition seismic data process system to integrate the modules with the complex algorithms that process seismic trace gather,and theI/O efficiency is lower.The architecture based on trace gather flow is presented for parallel seismic data input and output.Indexing data base of trace head information is built,and seismic trace gathers can be selected and sorted.Three kinds of methods to write seismic data file:file lock,random write and separate output,are designed to resolve the writing data conflict in parallel output data,and computer nodes could output data parallel.Alone data input process and output process are designed,and run parallel with compute modules,while the data buffer is used.The architecture is applied in seismic data process system MPS,and the I/O speed for seismic data processing is improved greatly.更多还原