Concurrent detection of processor control errors by hybrid signature monitoring

摘要

In this study,we present a new concurrent error-detectin scheme by hybrid signature to the on-line detection of control flow errors caused by transient and intermittent faults.The proposed hybrid signature monitoring technique combines the vertical signature scheme with the horizontal signature scheme.We first develop a new vertical signature scheme.The length of vertical signature is adjustable.The attribute of adjustable length can be employed to reduce the length of vertivcal signature,but at meantime it also decreases the coverage.The rest of signature word can be utilized for the horizontal signature and recording the block length.The horizontal signature can offset teh coverage degradation due to the reduction of vertical signature length,and decrease the latency significantly.The simulation is conducted to justify the effectiveness of the proposed technique and compared with the previous schemes.