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Courseware - Computational Science (CN)

  • How to Analyze the Performance of Parallel Codes 101: A Case Study with Open|SpeedShop
  • Material Type:

    Lecture / Presentation

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    Technical Format:

    PDF document

    Location:

    Go to materials

    Date Added:

    12/01/2011

    Date Modified:

    12/01/2011

    Author

    Jim Galarowicz, Krell Institute
    Don Maghrak, Krell Institute
    David Montoya , Lawrence Livermore National Laboratory
    Mahesh Rajan , Sandia National Laboratories
    Martin Schulz, Lawrence Livermore National Laboratory
    Description:

    Performance analysis is an essential step in the development of HPC codes. It will even gain in importance with the rising complexity of machines and applications that we are seeing today. Many tools exist to help with this analysis, but the user is too often left alone with interpreting the results. In this tutorial we will provide a practical road map for the performance analysis of HPC codes and will provide users step by step advice on how to approach the optimization of their codes as well as on how to investigate observed performance bottlenecks in detail. We will cover both on-node performance and communication optimization. Throughout this tutorial will show live demos using Open|SpeedShop, a comprehensive and easy to use performance analysis tool set, to demonstrate the individual analysis steps. All techniques will, however, apply broadly to any tool and we will point out alternative tools where useful.

    Recommended Audience:

    Advanced programmers, Beginning programmers, Graduate students, Secondary School students, Undergraduate students

    Language:

    English

    Keywords:

    Performance, analysis, HPC, Jim Galarowicz, Don Maghrak, Mahesh Rajan, David Montoya, Martin Schulz