关键词：大规模并行机器；单程序多数据流（SPMD）；高性能分层算法
摘 要：Large-scale parallel machines are programmed primarily with the single program, multiple data (SPMD) model of parallelism. This model has advantages of scalability and simplicity, combining independent threads of execution with global collective communication and synchronization operations.We discuss the information required by those analyses and provide a rough sketch of a team analysis for computing that information. We hope that this sketch can be used as a basis for future implementation of a complete team analysis.