Low-Overhead Detection of Memory Access Patterns and Their Time Evolution

被引：4
|
作者：
Servat, Harald [1 ,2 ]
Llort, German [1 ,2 ]
Gonzalez, Juan [1 ]
Gimenez, Judit [1 ,2 ]
Labarta, Jesus [1 ,2 ]
机构：
[1] Barcelona Supercomp Ctr, Dept Comp Sci, Barcelona 08034, Catalunya, Spain
[2] Univ Politecn Cataluna, Comp Architecture Dept, ES-08034 Barcelona, Spain
来源：
EURO-PAR 2015: PARALLEL PROCESSING | 2015年 / 9233卷
关键词：
Performance analysis; Address sampling; Data-object analysis; Sampling; Instrumentation;
D O I：
10.1007/978-3-662-48096-0_5
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
We present a performance analysis tool that reports the temporal evolution of the memory access patterns of in-production applications in order to help analysts understand the accesses to the application data structures. This information is captured using the Precise Event Based Sampling (PEBS) mechanism from the recent Intel processors, and it is correlated with the source code and the nature of the performance bottlenecks if any. Consequently, this tool gives a complete approach to allow analysts to unveil the application behavior better, and to lead them to improvements while taking the most benefit from the system's characteristics. We apply the tool to two optimized parallel applications and provide detailed insight of their memory access behavior, thus demonstrating the usefulness of the tool.
引用
收藏
页码：57 / 69
页数：13
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