A memory coherence technique for online transient error recovery of FPGA configurations
FPGA '01 Proceedings of the 2001 ACM/SIGDA ninth international symposium on Field programmable gate arrays
Reconfigurable Architecture for Autonomous Self-Repair
IEEE Design & Test
Efficient hardware checkpointing: concepts, overhead analysis, and implementation
Proceedings of the 2007 ACM/SIGDA 15th international symposium on Field programmable gate arrays
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This paper analyzes the data integrity of one of the most widely used lossless data compression techniques, Lempel-Ziv (LZ) compression. In this algorithm, because the data reconstruction from compressed codewords relies on previously decoded results, a transient error during compression may propagate to the decoder and cause a significant corruption in the reconstructed data. To recover the system from transient faults, we designed two rollback error recovery schemes for the LZ compression hardware, the "reload-retry" and "direct-retry" schemes. Statistical analyses show that the "reload-retry" scheme can recover the LZ compression process from transient faults in one dictionary reload cycle with a small amount of hardware redundancy. The "direct-retry" scheme can recover normal operations with a shorter latency but with a small degradation in the compression ratio.