Fault Side-Effects in Fault Tolerant
نویسندگان
چکیده
Many fault tolerant (FT) multistage interconnection networks have been devised that tolerate one or more faults. It is shown that the effects of some realistic faults can propagate through multiple stages and cause non-faulty components to behave erroneously; such faults with side effects can cause "FT" networks to lose their fault tolerance capabilities even due to a single fault. The PASM prototype interconnection network is examined as a case study of realistic faults with side effects. A fault model that includes side effects is introduced. An enhanced Extra Stage Cube network is proposed that tolerates faults with or without side effects.
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