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Keywords: performance diagnosis, parallel models, wavefront, relative analysis
Parallel performance diagnosis can be improved with the use of performance knowledge about parallel computation models. The Hercule diagnosis system applies model-based methods to automate performance diagnosis processes and explain performance problems from highlevel computation semantics. However, Hercule is limited by a single experiment view. Here we introduce the concept of relative performance diagnosis and show how it can be integrated in a model-based diagnosis framework. The paper demonstrates the effectiveness of Hercule’s approach to relative diagnosis of the well-known Sweep3D application based on aWavefront model. Relative diagnoses of Sweep3D performance anomalies in strong and weak scaling cases are given.
Created: Wed Oct 15 12:28:52 US/Pacific 2008
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