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CONCURRENCY
2008

Provenance trails in the Wings/Pegasus system

11 years 2 days ago
Provenance trails in the Wings/Pegasus system
Our research focuses on creating and executing large-scale scientific workflows that often involve thousands of computations over distributed, shared resources. We describe an approach to workflow creation and refinement that uses semantic representations to 1) describe complex scientific applications in a data-independent manner, 2) automatically generate workflows of computations for given data sets, and 3) map the workflows to available computing resources for efficient execution. Our approach is implemented in the Wings/Pegasus workflow system and has been demonstrated in a variety of scientific application domains. This paper illustrates the application-level provenance information generated Wings during workflow creation and the refinement provenance by the Pegasus mapping system for execution over grid computing environments. We show how this information is used in answering the queries of the First Provenance Challenge.
Jihie Kim, Ewa Deelman, Yolanda Gil, Gaurang Mehta
Added 09 Dec 2010
Updated 09 Dec 2010
Type Journal
Year 2008
Where CONCURRENCY
Authors Jihie Kim, Ewa Deelman, Yolanda Gil, Gaurang Mehta, Varun Ratnakar
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