多核机群下MPI程序优化技术的研究

摘要

The new features of multi-core make the memory hierarchy of multi-core clusters more complex, and also add the optimization space for MPI programs. We tested the communication performance of three different multi-core clusters, and evaluated some general optimization technologies,such as hybrid MPI/OpenMP, tuning MPI runtime parameters and optimization of MPI process placement in Intel and AMD multi-core cluster. The experiments result and optimization performances were also analyzed.%多核处理器的新特性使多核机群的存储层次更加复杂,同时也给MPI程序带来了新的优化空间.国内外学者提出了许多多核机群下MPI程序的优化方法和技术.测试了3个不同多核机群的通信性能,并分别在Intel与AMD多核机群下实验评估了几种具有普遍意义的优化技术:混合MPI/OpeMP、优化MPI运行时参数以及优化MPI进程摆放,同时对实验结果和优化性能进行了分析.