RFOH: A New Fault Tolerant Job Scheduler in Grid Computing

The goal of grid computing is to aggregate the power of widely distributed resources. Considering that the probability of failure is great in such systems, fault tolerance has become a crucial area in computational grid. In this paper, we propose a new strategy named RFOH for fault tolerant job scheduling in computational grid. This strategy maintains the history of fault occurrence of resources in Grid Information Server (GIS). Whenever a resource broker has jobs to schedule, it uses this information in Genetic Algorithm and finds a near optimal solution for the problem. Further, it increases the percentage of jobs executed within specified deadline. The experimental result shows that we can have a combination of user satisfaction and reliability. Using checkpoint techniques, the proposed strategy can make grid scheduling more reliable and efficient.