SC13 Home > SC13 Schedule > SC13 Presentation - Structural Comparison of Parallel Applications

SCHEDULE: NOV 16-22, 2013

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Structural Comparison of Parallel Applications

SESSION: Research Poster Reception

EVENT TYPE: Posters, Electronic Posters, and Education Posters, Awards, Best Poster Finalist

TIME: 5:15PM - 7:00PM

AUTHOR(S):Matthias Weber, Kathryn Mohror, Martin Schulz, Holger Brunst, Bronis R. de Supinski, Wolfgang E. Nagel

ROOM:Mile High Pre-Function

With the rising complexity of both architectures and applications, performance analysis and optimization has become essential in the development of scalable applications. Trace-based analysis has proven to be a powerful approach. However, a manual comparison of traces is extremely challenging and time consuming because of the large volume of detailed data and the need to correctly line up trace events. Our solution is a set of techniques that automatically align traces so they can be compared, along with novel metrics that quantify the differences between traces, both in terms of differences in the event stream and timing differences across events. We apply a hierarchical clustering approach that computes a dendrogram containing groups of structurally identical traces by iteratively increasing the number of included call-levels. We demonstrate the effectiveness of our solution by showing automatically detected performance and code differences across different versions of two real-world applications.

Chair/Author Details:

Matthias Weber - Technical University Dresden

Kathryn Mohror - Lawrence Livermore National Laboratory

Martin Schulz - Lawrence Livermore National Laboratory

Holger Brunst - Technical University Dresden

Bronis R. de Supinski - Lawrence Livermore National Laboratory

Wolfgang E. Nagel - Technical University Dresden

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