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- 2018
全球电离层模型的分布式并行解算
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Abstract:
为满足GNSS数据处理效率不断提升的需求，提出并开发了一套分布式并行计算框架，并基于该框架实现了全球电离层模型的分布式并行解算。采用2台服务器和4台台式机，对全球电离层建模分别测试了单机多线程、多机分布式等并行计算方案，并分析了不同方案建模的数据处理效率。结果表明，采用多线程并行计算可以大幅提高数据处理效率，且当开启线程数与计算机CPU核心数一致时效率提升最佳；采用多机分布式并行计算可进一步提高数据处理效率，使用4台台式机相对于单台台式机解算时间减少约60%，使用2台服务器相对于单台服务器解算时间减少约18%；采用分布式并行计算方案，可充分利用多台计算机资源来提高全球电离层建模效率，对电离层产品快速发布、建模算法的测试等具有重要的意义，对多系统GNSS精密定轨与定位、大网解算也具有很好的参考价值
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