**w-TG: A Combined Algorithm to Optimize the Runtime of the Grid-Based Workflow Within an SLA Context**

Dang Minh Quan1, Joern Altmann2 and Laurence T. Yang<sup>3</sup> <sup>1</sup>*Center for REsearch And Telecommunication Experimentation for NETworked Communities* <sup>2</sup>*Technology Management, Economics, and Policy Program, Department of Industrial Engineering, College of Engineering, Seoul National University* <sup>3</sup>*Department of Computer Science, St. Francis Xavier University* <sup>1</sup>*Italy* <sup>2</sup>*South Korea* <sup>3</sup>*Canada*
