Scalasca

Abstract

SCALASCA is an open-source toolset that can be used to analyze the performance behaviour of parallel applications to identify opportunities for optimization. It has been specifically designed for use on large-scale systems including IBM Blue Gene and Cray XT, but is also well-suited for small- and medium-scale HPC platforms. SCALASCA supports an incremental performance-analysis procedure that integrates runtime summaries with in-depth studies of concurrent behaviour via event tracing, adopting a strategy of successively refined measurement configurations. A distinctive feature is the ability to identify wait states that occur, for example, as a result of unevenly distributed workloads. Especially when trying to scale communication-intensive applications to large processor counts, such wait states can present severe challenges to achieving good performance.

Date Of Information

Thu Aug 07 14:19:10 PDT 2008

Domain

Parallel Processing Tools

Execution and Performance Analyzers (including debuggers)

Name

Scalasca

Title Line

toolkit for automated performance analysis

Version

1.1

Webpage

http://www.fz-juelich.de/jsc/scalasca