Core-level processor lockstepping

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 fa...

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Bibliographic Details
Main Authors Safford, Kevin David, Lyles, Christopher L, Delano, Eric Richard
Format Patent
LanguageEnglish
Published 30.10.2007
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Summary: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.