Parameter Space Exploration Using Scientific Workflows

Authors:
David Abramson;Blair Bethwaite;Colin Enticott;Slavisa Garic;Tom Peachey
Affiliations:
Faculty of Information Technology, Monash University, Clayton, Victoria, Australia 3800;Faculty of Information Technology, Monash University, Clayton, Victoria, Australia 3800;Faculty of Information Technology, Monash University, Clayton, Victoria, Australia 3800;Faculty of Information Technology, Monash University, Clayton, Victoria, Australia 3800;Faculty of Information Technology, Monash University, Clayton, Victoria, Australia 3800
Venue:
ICCS '09 Proceedings of the 9th International Conference on Computational Science: Part I
Year:
2009

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Abstract

In recent years there has been interest in performing parameter space exploration across "scientific workflows", however, many existing workflow tools are not well suited to this. In this paper we augment existing systems with a small set of special "actors" that implement the parameter estimation logic. Specifically, we discuss a set of new Kepler actors that support both complete and partial sweeps based on experimental design techniques. When combined with a novel parallel execution mechanism, we are able to execute parallel sweeps and searches across workflows that run on distributed "Grid" infrastructure. We illustrate our new system with a case study in cardiac cell modelling.