As the complexity of Grid applications increase, it becomes more important and urgent to provide grid workflow to construct and manage the applications. The grid workflow based on dynamic scheduling and performance evaluation is presented in this paper according to the standards of GCC and WFMC, which consists of user portal, resource management component, grid services management, performance ...

Contemporary workflow-management systems cannot represent change or evolution of business processes. When a change is needed due to external reason, an offline procedure is invoked in order to create a new workflow engine template for the future instances in the workflow enactment module. The standard interfaces do not deal with the business process metadata in a way that can actually change it...

The objective of the paper is to specify a new flattened Generalized Discrete Event System simulation engine structure and the Workflow modeling and simulation environment embedding it. We express first the new flattened simulation structure and give the corresponding transformation functions. We analyze performance tests conducted on this new simulation structure to measure its efficiency. The...

In recent years, workflow enabled applications have been used in an increasing number of contexts. This has required the swift development of new workflow languages and of their corresponding engines. However, the tools available to support the development of these engines are insufficient. In particular, the tools to test the implementation of engines have serious limitations, and are not well...

This paper presents a model-driven and integrated approach to variability management, customization and execution of software processes. Our approach is founded on the principles and techniques of software product lines and model-driven engineering. Model-driven engineering provides support to the specification of software processes and their transformation to workflow specifications. Software ...

Workflow technology previously developed by the Grid project has been used to automate a number of complex bioinformatics analyses, allowing much larger volumes of data to be produced than would be possible if these analyses were to be performed manually. Grid workflows can be constructed using the Taverna workbench, and the analysis specified by such a workflow can be performed throught the us...