On-line Testing and Recovery in TMR Systems for Real-Time Applications
ITC '01 Proceedings of the 2001 IEEE International Test Conference
Synthesis of fault-tolerant embedded systems
Proceedings of the conference on Design, automation and test in Europe
Mitigating the impact of hardware defects on multimedia applications: a cross-layer approach
MM '08 Proceedings of the 16th ACM international conference on Multimedia
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
A self-checking hardware journal for a fault-tolerant processor architecture
International Journal of Reconfigurable Computing - Special issue on selected papers from the international workshop on reconfigurable communication-centric systems on chips (ReCoSoC' 2010)
ACM Transactions on Embedded Computing Systems (TECS)
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Roll-forward checkpointing schemes are developed in order to avoid rollback in the presence of independent faults and to increase the possibility that a task completes within a tight deadline. However, despite of the adoption of roll-forward recovery, these schemes are not necessarily appropriate for time-critical applications because interactions with the external environment and communications between processes must be deferred during checkpoint validation steps (typically, two checkpoint intervals) until the fault-free processors are identified. The deadlines on providing services may thus be violated. In this paper we present and discuss two alternative roll-forward recovery schemes, especially for time-critical and interaction-intensive applications, that deliver correct, timely results even when checkpoint validation is required.