Vector performance analysis of three supercomputers: Cray 2, Cray Y-MP, and ETA 10-Q
Vector performance analysis of three supercomputers: Cray 2, Cray Y-MP, and ETA 10-Q
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三台超级计算机的矢量性能分析：Cray 2、Cray Y-MP 和 ETA 10-Q
DOI：
10.1145/76263.76352
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
R. Fatoohi
中科院分区：
文献类型：
--
作者：
R. Fatoohi
本文提出了一系列实验的结果，以研究三个超级计算机的单个处理器性能：Cray-2，Cray Y-MP和Eta10-Q。这项研究的主要目的是确定某些建筑特征对现代超级计算机性能的影响。这里考虑了时钟周期，内存链接，内存组织，多个功能单元和链接之类的功能。一个简单的性能模型用于检查这些功能对一组基本操作的性能的影响。在这些计算机上实现此设置的三个矢量长度和三个内存步幅的结果进行了比较。对于单位步步操作，Cray Y-MP的表现使Cray-2的表现高达三倍，而ETA10-Q则在这些操作中高达四倍。此外，与Cray-2和Eta10-Q不同，偶数的步幅不会导致cray Y-MP的重大性能降解。还使用两种数值算法进行比较。对于两种算法的三个问题大小，Cray Y-MP的表现使Cray-2的表现优于43％至68％，ETA10-Q的表现为4到八次。
This paper presents the results of a series of experiments to study the single processor performance of three supercomputers: Cray-2, Cray Y-MP, and ETA10-Q. The main object of this study is to determine the impact of certain architectural features on the performance of modern supercomputers. Features such as clock period, memory links, memory organization, multiple functional units, and chaining are considered here. A simple performance model is used to examine the impact of these features on the performance of a set of basic operations. The results of implementing this set on these machines for three vector lengths and three memory strides are presented and compared. For unit stride operations, the Cray Y-MP outperformed the Cray-2 by as much as three times and the ETA10-Q by as much as four times for these operations. Moreover, unlike the Cray-2 and ETA10-Q, even-numbered strides do not cause a major performance degradation on the Cray Y-MP. Two numerical algorithms are also used for comparison. For three problem sizes of both algorithms, the Cray Y-MP outperformed the Cray-2 by 43% to 68% and the ETA10-Q by four to eight times.