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- DOI: 10.1109/ICWS.2009.19
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Scientific workflows as services in caGrid: a Taverna and gRAVI approach
Tan, Wei; Chard, Kyle; Sulakhe, Dinanath; Madduri, Ravi; Foster, Ian; Soiland-Reyes, Stian; Goble, Carole
In: Web Services, 2009. ICWS 2009. IEEE International Conference on Web Services: IEEE International Conference on Web Services (ICWS); 06 Jul 2009-10 Jul 2010; Los Angeles, CA. http://www.computer.org/csdl/proceedings/icws/2009/3709/00/3709a413-abs.html: IEEE; 2009. p. 413-420.
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Abstract
In scientific collaboration platforms such as caGrid,workflow-as-a-service is a useful concept for various reasons, such as easy reuse of workflows, access to remote resources, security concerns, and improved execution performance. We propose a solution for facilitating workflow-as-a-service based on Taverna as the workflow engine and gRAVI as a service wrapping tool. We provide both a generic service to execute all Taverna workflows, and an easy-to-use tool (gRAVI-t) for users to wrap their workflows as workflow-specific services, without developing service code. The signature of the specific service is identical to the corresponding workflow's input/output definition and is therefore more self-explained to workflow users. These two categories of services are useful in different scenarios, respectively. We use a tumor analysis workflow as an example to demonstrate how the workflow-as-a-service approach benefits the execution performance. Finally a conclusion is drawn and future research opportunities are discussed.