Exploring the MPI tool information interface: features and capabilities
Exploring the MPI tool information interface: features and capabilities
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探索 MPI 工具信息界面：特性和功能
DOI：
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发表时间：
2016
期刊：
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通讯作者：
M. Schulz
中科院分区：
文献类型：
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作者：
T. Islam;K. Mohror;M. Schulz
MPI标准的最新版本MPI 3.0包括一个新的接口，即MPI工具信息接口(MPI_T)，它为工具提供对MPI内部性能和配置信息的访问。与补充和广泛使用的分析接口PMPI相结合，它使工具能够以独立于MPI实现的方式访问广泛的信息。在本文中，我们关注MPI_T提供的新功能，并提出了两个新的工具来利用这个新的接口，为用户提供关于他们的代码执行行为的新见解：Varlist允许用户查询和记录MPI环境，Gyan使用内部MPI性能变量提供剖析信息。在我们的案例研究中，我们将演示MPI_T如何使MPI库和应用程序开发人员能够研究MPI库的运行时设置和特定于实现的行为对应用程序性能的影响。
The latest version of the MPI Standard, MPI 3.0, includes a new interface, the MPI Tools Information Interface (MPI_T), which provides tools with access to MPI internal performance and configuration information. In combination with the complementary and widely used profiling interface, PMPI, it gives tools access to a wide range of information in an MPI implementation independent way. In this paper, we focus on the new functionality offered by MPI_T and present two new tools to exploit this new interface by providing users with new insights about the execution behavior of their code: Varlist allows users to query and document the MPI environment and Gyan provides profiling information using internal MPI performance variables. Together, these tools provide users with new capabilities in a highly portable way that previously required in-depth knowledge of individual MPI implementations, and demonstrate the advantages of MPI_T. In our case studies, we demonstrate how MPI_T enables both MPI library and application developers to study the impact of an MPI library’s runtime settings and implementation specific behaviors on the performance of applications.