Modeling and Analysis for Grid Service Reliability Considering Node Recovery
Huang Hongzhong · Xi'an Jiaotong Daxue xuebao · 2008
A reliability model for grid services that considers the fault recovery is presented to solve the problem that the grid service reliability decreases at exponential as the time increases,especially for some large subtasks that need long-lived computations and long-terms data storage.The ability of recovery into the grid nodes is introduced in grid systems with star topology,and the influence of software reliability is also taken into account.In order to improve the reliability of grid services,the grid services are divided into subtasks and then are assigned to different resources for processing in the proposed model.Numerical example is given to show that the recovery has a positive influence on grid service reliability and provides an effective solution to the fault tolerant for the services which consist of some large subtasks.