数值预报产品多线程下载软件的设计与实现  

Design and Implementation of Multi-thread Download Software for Numerical Forecast Products

作　　者：向筱铭 徐晓莉 蒋丽娟 

机构地区：[1]四川省气象探测数据中心,四川成都610072 [2]高原与盆地旱涝灾害四川省重点实验室,四川成都610072

出　　处：《贵州气象》2017年第4期72-76,共5页Journal of Guizhou Meteorology

基　　金：四川省气象局"省级气象数据支撑环境及应用系统建设创新团队"资助

摘　　要：针对数值预报产品数据量较大以及传统业务中使用FTP下载数据耗时较长、时效性较低等问题,研究并实现了基于FTP协议的数值预报产品多线程下载软件。软件基于Linux操作系统,通过对任务队列的管理实现数据的及时下载,通过多线程的方式提高数据的下载速度,缩短下载时间。此外,软件还具有数据缓冲区管理功能和断点续传功能。实验结果表明,使用该软件可有效减少数值预报产品在传输环节所花费的时间,提高资料的时效性。This paper introduces a multi - thread download software for numerical forecasting products based on FFP protocol, which is based on the long time and low timeliness of downloading large amount of data of numerical forecasting products by traditional FTP command. The software is developed under Linux operating system, and improves the download speed through the task queue management and multi - threaded way. In addition, the software also incorporates a data buffer management and breakpoint resume functions. The experimental results show that the software can effectively reduce the time it takes for the numerical forecast products to be transmitted and improve the timeliness of the data.

关 键 词：数值预报 FTP 多线程 任务队列 

分 类 号：TP311.52[自动化与计算机技术—计算机软件与理论]