In the recent years, many efforts have been made for the development of the Grid workflow systems. Currently most Grid workflow systems focus on data analysis function or specific Grid applications, while building large-scale scientific collaborative applications is still not easy for common users. In this paper, requirement of Grid workflow spanning multiple grids was introduced firstly. Then, a highly scalable, more usable Grid workflow framework is proposed. The framework provides abstract components that facilitate Grid-based workflow construction, and can integrate multiple Grids' resources into a single system with an intuitive graphical user interface. Furthermore, a prototype system based on this framework was developed, along with a simple bioinformatics application workflow as a demonstration.
['Shifeng Shang', 'Jinlei Jiang', 'Zhenchun Huang', 'Xiaomeng Huang', 'Guangwen Yang', 'Weimin Zheng', 'Lan Yu']
A Grid Workflow Framework with High Scalability and Usability