计算机应用与软件2012，Vol.29Issue(1)：298-300,3.
并行程序性能分析中的时戳同步问题及方法
TIMESTAMP SYNCHRONISATION PROBLEM IN PARALLEL PROGRAM PERFORMANCE ANALYSIS AND ITS SOLUTION
杜祝平 1于磊 1李志博 1侯雪梅 1连百友1
作者信息
- 1. 中国人民解放军信息工程大学 河南郑州450002
- 折叠
摘要
Abstract
Parallel program performance analysis based on event-trace is a method to reveal the performance of the program by analysing the event records collected by processors, computing the executed time of program object and investigating the correlation between events. These works require the event timestamps collected by processors to be comparable. Because of various reasons, the event timestamps passing to measure to acquire are usually not synchronous, which influences the performance analysis work directly. In this paper, the concept and the generation cause of processors clock offset, the measure offset in parallel program performance analysis, the clock condition and the requirements of timestamp synchronisation are discussed. Finally, a kind of technique named linear offset interpolation based on constant clock drift is introduced, which can help to some extent to solve the timestamp synchronisation problem in parallel program performance analysis.关键词
性能分析/线性误差插值/时戳同步Key words
Performance analysis/Linear offset interpolation/Timestamp synchronisation分类
信息技术与安全科学引用本文复制引用
杜祝平,于磊,李志博,侯雪梅,连百友..并行程序性能分析中的时戳同步问题及方法[J].计算机应用与软件,2012,29(1):298-300,3.
