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A technique for detecting and diagnosing faults at the processor level in a multiprocessor system is described. A process is assigned whenever possible to two processors: the processor to which it would normally be assigned (primarily) and an additional processor that would otherwise be idle (secondary). Two strategies are described and analyzed: one that is preemptive and another that is nonpr
fault detection; diagnosis; multiprocessor systems; processor level; preemptive; nonpreemptive; spare capacity; response time; detecting faults; fault tolerant computing; multiprocessing systems; redundancy; system recovery.

K. Sabnani, W. Hery and A. Dahbura, "Spare Capacity as a Means of Fault Detection and Diagnosis in Multiprocessor Systems," in IEEE Transactions on Computers, vol. 38, no. , pp. 881-891, 1989.
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