Main processor error detection using checker processors
A main processor, error detection technology, applied in the field of data processing, can solve problems such as increasing transient faults
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[0017] Implementing error detection can be challenging, especially with larger and more complex processors. One approach may use a dual-core lockstep technique, where two versions of the same processor are provided and the same instruction is executed in parallel on the same input, so that there can be a gap between the results of the two processors. An error was detected while diffing. However, this approach requires the second core to keep pace with the first core, so a full second core identical to the first core must be provided, doubling the area and power consumption of the processing system. This can be a significant cost, especially when the host processor is a relatively complex high-performance processor (eg, one that supports out-of-order execution). Furthermore, since many interfaces of the corresponding cores are compared to detect errors, a lot of extra wiring will be required. For more complex processors, due to the physical size of these processors and the re...
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