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Issue No. 04 - July-Aug. (2013 vol. 15)
ISSN: 1521-9615
pp: 20-29
Gideon Juve , University of Southern California
Mats Rynge , University of Southern California
Ewa Deelman , University of Southern California
Jens-S. Vockler , University of Southern California
G. Bruce Berriman , California Institute of Technology
Scientists have many computing infrastructures available to conduct their research, including grids and public or private clouds. This article explores the use of these cyberinfrastructures to execute scientific workflows, an important class of scientific applications. In particular, it examines the benefits and drawbacks of cloud and grid systems using the case study of an astronomy application that analyzes data from the NASA Kepler mission to compute periodograms. The authors describe their experiences modeling the periodogram application as a scientific workflow using Pegasus and deploying it on the FutureGrid scientific cloud testbed, the Amazon EC2 commercial cloud, and the Open Science Grid. They also compare and contrast the infrastructures in terms of setup, usability, cost, resource availability, and performance.
Cloud computing, Computer architecture, Data transfer, Extrasolar planets, Grid computing, Astronomy, Scientific computing, Online services

G. Juve, M. Rynge, E. Deelman, J. Vockler and G. B. Berriman, "Comparing FutureGrid, Amazon EC2, and Open Science Grid for Scientific Workflows," in Computing in Science & Engineering, vol. 15, no. 4, pp. 20-29, 2013.
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