Feature - A grid-enabled workflow management system for e-Science |
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The recent trend towards Service Oriented Architecture - collections of services which operate according to a request/reply model - has stimulated the development of Workflow Management Systems (WMSs) which target the composition of services such as Taverna and Triana. A new, grid-enabled scientific workflow management system, WS-VLAM, developed in the context of the Virtual Laboratory for e-Science, provides a basic set of tools for building workflows by connecting components to each other based on data dependencies. The WS-VLAM workflow management system is designed to provide and support the coordinated execution of geographically distributed grid-enabled software components, which can be combined into a workflow. The system takes advantage of the underlying grid infrastructure and unites it with a flexible, high-level, rapid prototyping environment for scientific applications. WS-VLAM breaks down an application into a collection of services and software components, which communicate with one another only when the input data becomes available. |
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WS-VLAM The main features of WS-VLAM are: The traditional batch processing of grid jobs and workflow execution based on file exchange between the components is not suitable in some scenarios. In contrast, WS-VLAM supports the simultaneous execution of co-allocated processes on the grid, which enables direct data streaming between distributed components, making it highly useful for near real-time distributed applications, such as bio-medical research and online video processing and analysis. -Adam Belloum, for iSGTW. Edited by Seth Bell |
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