Performance Optimization of a CFD Application on Intel Multicore and Manycore Architectures

摘要：

　　This paper reports our experience optimizing the performance of a high-order and high accurate Computational Fluid Dynamics (CFD) application (HOSTA) on the state of art multicore processor and the emerging Intel Many Integrated Core (MIC) coprocessor.We focus on effective loop vectorization and memory access optimization.A series techniques,including data structure transformations,procedure inlining,compiler SIMDization,OpenMP loop collapsing,and the use of Huge Pages,are explored.Detailed execution time and event counts from Performance Monitoring Units are measured.The results show that our optimizations have improved the performance of HOSTA by 1.61× on a two Intel Sandy Bridge processors based computer node and 1.97× on a Intel Knights Corner coprocessor,the public MIC product.The microarchitecture level effects of these optimizations are also discussed.

关键词： Computational Fluid Dynamics multicore manycore performance optimization performance analysis

作者: Yonggang Che Lilun Zhang Yongxian Wang Chuanfu Xu Wei Liu Xinghua Cheng

作者单位: Science and Technology on Parallel and Distributed Processing Laboratory National University of Defense Technology,Changsha,China

会议类型: 国际会议

会议名称: ACA,Advanced Computer Architecture(2014年全国计算机体系结构学术会议)

会议地点: 沈阳

会议语种:英文

页码: 84-97

在线出版日期: 2014-08-23（万方平台首次上网日期，不代表论文的发表时间）