Virtual workflow system for distributed collaborative scientific applications on Grids

Grid computing has become an effective computing technique in recent years. This paper develops a virtual workflow system to construct distributed collaborative applications for Grid users. The virtual workflow system consists three levels: abstract workflow system, translator and concrete workflow system. The research highlight of the implementation is that this workflow system is developed based on CORBA and Unicore Grid middleware. Furthermore, this implementation can support legacy application developed with Parco and C++ codes. This virtual workflow system can provide efficient GUI for users to organize distributed scientific collaborative applications and execute them on Grid resources. We present the design, implementation, and evaluation of this virtual workflow system in the paper.

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► In this paper, we propose the methodology of virtual workflow solution by mapping abstract workflow components to concrete application services (such as CORBA object).
► We design a virtual workflow system that includes an abstract workflow system, concrete workflow system, registry service and a GUI.
► We implement the virtual workflow system on real Grid computing environment with Unicore Grid middleware and PACO application services..