1140310514-陈豪-实验2.pdf

关键词： English:parallel computing 中文：并行计算 定义： English:Parallel computing refers to the computing model that many instructions can be carried out simultaneously. Under the premise of simultaneous, the process can be broken down into small part of the calculation, then solved by a concurrent way. 中文：并行计算指许多指令得以同时进行的计算模式。在同时进行的前提下，可以将计算的 过程分解成小部份，之后以并发方式来加以解决。 1. Performance analysis of large scale parallel CFD computing Author: Zhi Shang Title: Computer Physics Communications, 2013, Vol.184 (2) Keywords:CFD;Petascale;Exascale;Optimization;Code_Saturne; English abstract: In order to run computational fluid dynamics (CFD) codes on large scales,parallel computing has to be employed. For instance, on Petascale computing, general parallel computing without any optimization is not enough, especially for complex industrial issues that employ a large number of mesh cells to capture the details of the geometry. How to distribute these mesh cells among the multi-processors for Terascale and Petascale systems to obtain a good performance on parallel computing is really a challenge. Some mesh partitioning software packages, such as Metis, ParMetis, PT- Scotch and Zoltan, were chosen as the candidates ported into Code_Saturne to test if they can lead Code_Saturne towards Petascale and Exascale parallel CFD computing. Through the studies, it was found that mesh partitioning optimization software packages based on the graph mesh partitioning method can help the CFD code obtain good mesh distributions for high performance computing (HPC). 1. 对于大规模并行流体动力学计算的性能分析 作者：尚志 刊名：计算机物理通讯，2013，Vol.184 （2） 关键词：千万亿次；流体动力学；超大；优化；黄金代码；高性能计算 中文摘要：为了在大尺度上计算流体动力学码，必须采用并行计算。例如，对于上千万亿次 的运算，只采用一般的并行计算而不进行任何优化是不够的，尤其是对于采用大量网状细胞 以捕捉几何细节的复杂工业问题。如何分配多处理器的万亿级和千万亿次系统之间的这些 网格单元，使得有关并行计算能够有不错的表现这确实是一个挑战。有些网分区的软件包， 如墨提斯，ParMetis，PT-苏格兰和佐尔坦，被选为候选人移植到Code_Saturne 来测试他们 是否会导致黄金代码对千万亿次和百亿亿次计算流体力学并行计算。通过这些研究，我们发 现根据该图表网格划