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Multiprocessor fault diagnosis under local constraints

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4 Author(s)
Das, A. ; Montreal Univ., Que., Canada ; Thulasiraman, K. ; Agarwal, V.K. ; Lakshmanan, K.B.

The authors study the fault diagnosis of multiprocessor systems when fault constraints in the local domain of each processor are specified. They use the comparison-based model. A multiprocessor system S is t-in-L diagnosable if, given a syndrome, all faulty processors can be uniquely identified provided there are at most t faulty processors in the local domain L(u i) ∪ {ui} of every processor, ui in S, where L (ui ) denotes the set of processors adjacent to ui. Certain basic results that lead to efficient conditions for unique diagnosis of a system when certain fault constraints are satisfied in the local domain of each processor in the system are presented. The t-in-L diagnosability of certain regular interconnected systems is examined under the assumption that less than half of the processors in the system are faulty. Diagnosis algorithms for these systems are presented

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Computers, IEEE Transactions on  (Volume:42 ,  Issue: 8 )