首页 | 本学科首页   官方微博 | 高级检索  
     


Supporting Nested OpenMP Parallelism in the TAU Performance System
Authors:Alan Morris  Allen D Malony  Sameer S Shende
Affiliation:(1) Performance Research Laboratory, Department of Computer and Information Science, University of Oregon, Eugene, OR, USA
Abstract:Nested OpenMP parallelism allows an application to spawn teams of nested threads. This hierarchical nature of thread creation and usage poses problems for performance measurement tools that must determine thread context to properly maintain per-thread performance data. In this paper we describe the problem and a novel solution for identifying threads uniquely. Our approach has been implemented in the TAU performance system and has been successfully used in profiling and tracing OpenMP applications with nested parallelism. We also describe how extensions to the OpenMP standard can help tool developers uniquely identify threads.
Keywords:OpenMP  Nested parallelism  TAU
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号