Panoply of utilities in Taverna

The Taverna e-Science Workbench is a central component of myGrid, a loosely coupled suite of middleware services designed to support in silico experiments in biology. Taverna enables the construction and enactment of complex workflows over resources on local and remote machines, allowing the automation of otherwise labour-intensive multi-step bioinformatics tasks. As the Taverna user community has grown, so has the demand for new features and additions. This paper outlines the functional requirements that have become apparent over the last year of working with domain scientists, along with the solutions implemented in both the Taverna workbench and the Freefluo enactment engine to address concerns relating to workflow construction and enactment, respectively