Core-level processor lockstepping

Details Core-level processor lockstepping Core-level processor lockstepping

2007-10-30

2007-10-30

Chu, Gabriel (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S012000, C714S049000

Reexamination Certificate

active

10818975

ABSTRACT:
A device is provided which includes a first microprocessor core to generate a first output signal; a second microprocessor core to generate a second output signal; a switching fabric having a first input/output port; and lockstep logic, coupled between the first input/output port of the switching fabric and the first and second microprocessor cores, to detect whether the first output signal differs from the second output signal.

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