在计算机集群上,采用Windows通信基础(WCF)架构,实现大范围DEM数据的并行绘制.根据控制节点的任务分配策略对集群中各服务器进行任务分配;服务端采用WCF的任务并发模式,对控制节点分配的任务直接分发给服务实例,无需放到消息队列中进行等待,以此提高集群对DEM数据的并行绘制效率.通过对不同数据量的DEM数据进行集群的并行绘制测试,得出绘制加速比随着数据量的增加而增加的结论,这对于大数据量的DEM数据的并行处理具有重要意义. On the computer cluster, the Windows Communication Foundation (WCF) architecture is adopted to realize the parallel drawing of a wide range of DEM data.According to the task assignment strategy of the control node, the tasks are distributed to all the servers in the cluster.The server uses WCF task concurrency model to control The tasks distributed by nodes are directly distributed to service instances and do not need to wait in the message queue to improve the parallel rendering efficiency of DEM data.Through clustering and parallel testing of DEM data with different data volumes, This is more significant than the parallel processing of DEM data with large data volumes, as compared to the conclusion that data volume increases.