A dependable task scheduling strategy for a fault tolerant grid model

Authors:
Yuanzhuo Wang;Chuang Lin;Zhengli Zhai;Yang Yang
Affiliations:
School of Information Engineering, University of Science and Technology Beijing, Beijing, China;Department of Computer Science and Technology, Tsinghua University, Beijing, China;School of Information Engineering, University of Science and Technology Beijing, Beijing, China;School of Information Engineering, University of Science and Technology Beijing, Beijing, China
Venue:
APWeb'06 Proceedings of the 2006 international conference on Advanced Web and Network Technologies, and Applications
Year:
2006

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Abstract

Grid provides an integrated computer platform composed of differentiated and distributed systems. In this paper, aiming at the heterogeneity and dynamism of a grid system, a novel fault-tolerant grid-scheduling model is presented based on Stochastic Petri Net. On the other hand, a new grid-scheduling strategy, the united strategy for the availability factor and expected accomplishing time (USAT), is put forward, In the end, the performance of the scheduling strategy based on the fault-tolerant grid-scheduling model is analyzed by SPNP software package. The numerical results show that USAT strategy can reduce these bad effects of dynamic and autonomic resources to some extent so as to guarantee quality of service (QoS).