Ant Algorithm with Execution Quality Based Prediction in Grid Scheduling

Task scheduling is one important job in Grid computing and also a hard and complex problem. We have quite a few algorithm of task scheduling in the past researches. Ant algorithm is a heuristic algorithm. The inherent parallelism and scalability make this algorithm meet the requirement of complex task scheduling in Grid computing.In this paper, we will propose an improved ant algorithm in our power grid environment. We made several improvements on the calculation of pheromone and task issue method as well. The improved algorithm becomes more sensitive with the power grid environment and more robust with heavy workload.