HW/SW Co-Detection of Transient and Permanent Faults with Fast Recovery in Statically Scheduled Data Paths

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Provided by: edaa
Topic: Big Data
Format: PDF
In this paper the authors describe a hardware/software based technique to make the data path of a statically scheduled super scalar processor fault tolerant. The results of concurrently executed operations can be compared with little hardware overhead in order to detect a transient or permanent fault. Furthermore, the hardware extension allows to recover from a fault within one to two clock cycles and to distinguish between transient and permanent faults. If a permanent fault was detected, this fault is masked for the rest of the program execution such that no further time is needed for recovering from that fault.
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