国家地质空间信息网格结点计算池构架及其实现

Framework and its Realization of Grid Node Compute Pool of the National Geological Spatial Information

本文针对网格虚拟和协同的核心技术问题,对组成国家地质空间信息网格平台的网格结点计算池的构架与机制、组成网格结点计算池的资源聚合器、元服务、智能服务引擎的概念及网格结点计算池的服务流程进行了讨论。该构架通过资源聚合器实现提供统一方式服务发现的接口、为资源虚拟化及空间数据的描述发现和集成提供支持;通过网格元服务技术,集合一组通过广域网连接起来的性质不同的服务(计算)资源,并作为一个单独的计算环境向用户提供计算服务的元服务;通过网格服务智能服务引擎,进行服务发现、异步通讯及元服务级的并行计算、均衡负载、生命周期管理、服务与资源绑定以及把门户中的用户管理、资源监控、网络安全、计费等功能组合和融合,实现了一个无状态服务和一个或多个有状态资源的关联的协同。目前已初步构建了国家地质空间信息网格,连通13个结点,并开始实际业务模式运行。实现了长江中下游有色金属成矿带和西南三江有色金属成矿带的在线分布式资源评价和华北平原地下水资源动态评价,取得了很好的实际运行效果。

Focusing on the core technology of grid virtuality and cooperation, this paper discusses the framework and mechanism of the grid node compute pool which makes up the platform of the national geological spatial information grid; the concepts of resources aggregation, recta-service and intelligent service engine which compose the grid node compute pool; and the service flow of the grid node compute pool. Through resources aggregation, the framework can provide unified interface of service discovery and support the resources virtualization as well as the description, discovery and integration of the spatial data. Using grid meta-service technology, the framework can assemble a group of different service resources connected through WAN and provide meta-service as an individual compute environment. With intelligent service engine, the framework can carry out service discovery, asynchronous communication, parallel computation at meta-service level, balanced load, life cycle management, services and resources binding, and combination of the functions in the portal such as user management, resources control, network security, cost calculation. In this way the cooperation between intangible services and one or more tangible resources is realized. Now the National Geological Spatial Information Grid connecting 13 nodes is preliminarily constructed and has started actual operation. It has realized the on-line resources assessment of the non-ferrous metal mineralization belt in the middle and lower reaches of Yangtze River and southwest three river areas, and the dynamic assessment of the groundwater resources in the North China Plain. The actual operation has achieved good results.