Abstract
Evaluation of program performance on concurrent computers requires methods and tools that are part of an integrated environment for observing, analyzing, and displaying system performance. This paper describes a unique graphical approach for presenting performance data of concurrent computer systems, possibly having large numbers of processors. Performance data is generated and collected via instrumentation, reduced via conventional cluster analysis techniques, and converted into a graphical form to highlight important performance measures. A novel kind of data plot is introduced to visually display both temporal and spatial information describing system activity. A prototype implementation applied to two case studies is described.
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