基于SMP机群的航空CFD并行技术应用研究

Application and Resaerch of Parallel CFD Techniques Based on SMP Cluster

针对SMP机群的双层并行体系结构,研制出一种双层并行技术———在计算节点间采用MPI消息传递模式并行,而在计算节点内部采用OpenMP编译器指令模式并行。通过算例测试证明,采用该技术的航空CFD程序,并结合贪婪负载平衡分配技术进行并行计算,其效率可达94%,计算结果与实验值吻合。

Based on two-level parallel structures of SMP cluster, a two-level parallel technique is developed, which uses a Message Passing Interface MPI between the nodes and Compiler directives OpenMP inside the nodes. A greedy load balancing technique is employed during parallel computing. Testing results show the parallel computing efficient of CFD codes with the two -level parallel technique gets up to 94%, and computing results are in good agreement with the experimental data.