Abstract

Functionality: The resolver takes a metadata workflow description and based on the knowledge of application components (transformations) and the required data, generates an abstract workflow identifying the input data, transformations and their dependencies necessary to produce the requested data. The experimental version of Pegasus that targets the LIGO application is able to map between various types of requests (pulsar search, short Fourier transform, and time interval) and produce an abstract workflow which includes all the steps necessary for the computation.
Use case scenario: A user provides a high-level data description, such as conduct a pulsar search over a particular time interval in a particular frequency range and particular location in the sky. The editor takes that description and produces an abstract workflow that contains the description of the Fourier transforms and pulsar search codes that need to be applied to the raw data.

Date

January 1, 1970

Authors

James Blythe, Richard Cavanaugh, Ewa Deelman, Ian Foster, Seung-Hye Jang, Carl Kesselman, Keith Marzullo, Reagan Moore, Valerie Taylor, Xianan Zhang

Publisher

GriPhyN technical report 2004-23 http://pegasus. isi. edu/pegasus/publications/editors. pdf