Efficient Scheduling Algorithm for the Exchange of Data in Grid Environment

Vol.3 No.3

Year: 2009

Issue: Jan-Mar

Title: Efficient Scheduling Algorithm for the Exchange of Data in Grid Environment   

Author Name: Sumathi P, Punithavalli M   

Synopsis:   

Grid is an infrastructure that involves the integrated and collaborative use of computers, networks, databases and scientific instruments owned and managed by multiple organizations. The execution of scientific workflows in grid environments requires many disputes due to the dynamic nature of such environments and the characteristics of scientific applications. We have proposed a computational e-governance framework for regulating the public requirements. The framework requires scheduling algorithms for allocating resources to application jobs in such a way that the users' requirements are met. This work presents an algorithm that dynamically schedules tasks of workflows to grid sites based on the performance of these sites when running previous jobs from the same workflow. The algorithm captures the dynamic characteristics of grid environments without the need to check out the remote sites. It has been tested in our own grid environment using Globus Toolkit 4.0. The experimental results show that the new scheduling algorithm can lead to significant  performance gain in various applications.