Simulation on a fault tolerant multiprocessor system

Aiming at raising the reliability of the system and making better use of system resources, this paper studies the performance of a fault tolerant multiprocessor system. The fault tolerance strategy used by the system involves how to reallocate tasks that are blocked by breakdown processors and at the same time avoid tasks missing their deadlines. The effects of various parameters on system performance with respect to the fault tolerant strategy are studied via simulation by using WITNESS simulation tool.