Method for PVM-based quasi-synchronous checkpointing
Yufang Zhang · Jisuanji gongcheng yu sheji · 2006
Checkpoint is an important means to implement fault-tolerance in parallel system.Synchronous checkpointing method has been widely used in network of workstation system.Message-passing mechanism,provided byPVM,hashigh efficiencyin heterogeneous network computing,while lacks of supporting fault-tolerance.In order to reduce time overhead,a method for PVM-based quasi-syn-chronous checkpointing was given.This method adopted the advantages of synchronous checkpointing method,and enabled each node to save status independently by recording message.Thereby,overhead of synchronization of checkpointing was reduced greatly,and operation efficiency of checkpoint was enhanced.This method was implemented in PVM environment.Results of experiments showed that the method had better performance of fault-tolerance.