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Integrated Performance Views in Charm++: Projections Meets TAU

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4 Author(s)
Scott Biersdorff ; Dept. of Comput. Sci., Univ. of Oregon, Eugene, OR, USA ; Chee Wai Lee ; Allen D. Malony ; Laxmikant V. Kale

The Charm++ parallel programming system provides a modular performance interface that can be used to extend its performance measurement and analysis capabilities. The interface exposes execution events of interest representing Charm++ scheduling operations, application methods/routines, and communication events for observation by alternative performance modules configured to implement different measurement features. The paper describes the Charm++'s performance interface and how the Charm++ Projections tool and the TAU Performance System can provide integrated trace-based and profile-based performance views. These two tools are complementary, providing the user with different performance perspectives on Charm++ applications based on performance data detail and temporal and spatial analysis. How the tools work in practice is demonstrated in a parallel performance analysis of NAMD, a scalable molecular dynamics code that applies many of Charm++'s unique features.

Published in:

2009 International Conference on Parallel Processing

Date of Conference:

22-25 Sept. 2009