摘要
In this paper,a new scheme for recovering errors due to transient faults in a real-time multiprocessor system is presented.The scheme,called dynamic redundancy at the task level,is implemented in a real-time multitasking environment.Utilizing the facilities in the operating system,the scheme makes backup tasks for the primary tasks as redundancy.The paper introduces an algorithm to gene- rate a fault tolerant schedule for the tasks so that they recover errors as retry or checkpointing does.A reliability model is proposed to evahaste the effectiveness of the scheme.
In this paper,a new scheme for recovering errors due to transient faults in a real-time multiprocessor system is presented.The scheme,called dynamic redundancy at the task level,is implemented in a real-time multitasking environment.Utilizing the facilities in the operating system,the scheme makes backup tasks for the primary tasks as redundancy.The paper introduces an algorithm to gene- rate a fault tolerant schedule for the tasks so that they recover errors as retry or checkpointing does.A reliability model is proposed to evahaste the effectiveness of the scheme.
