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Rollback recovery is a trustworthy and key approach to fault tolerance in high performance computing and to parallel program debugging. In various rollback recovery protocols, causal message logging shows some desirable characteristics, but its high piggybacking overhead obstructs its applications, especially in large-scale distributed systems. Its high overhead arises from its conservation in the...
This paper presents a simple corrective control scheme for overcoming state transition faults occurring in the operation of asynchronous sequential circuits. The proposed controller is static, as it does not need any memory in its design so as to minimize the controller size. We address the existence condition and design procedures for static corrective controllers that invalidate state transition...
Reachability and state recovery for switched asynchronous sequential machines are investigated in this paper. The considered switched asynchronous machine is exposed to the adverse effect of adversarial inputs. The main objective is to design a state feedback controller so that the switched machine can recover the original state after going through unauthorized state transitions by faults. We propose...
We address fault diagnosis and tolerance in dynamics of asynchronous sequential machines based on corrective control theory. The controlled asynchronous machine has input/state type where the present state is given as the output value. We consider a kind of intermittent faults that cause unauthorized state transitions to the machine, and that persist for finite time after the initial occurrence. Not...
In this paper, a control mechanism is proposed for state fault-tolerance of asynchronous sequential machines. A disturbance input may penetrate into the asynchronous machine and provoke unauthorized state transitions. The considered asynchronous machine is of input/output type, where access to the state of the machine is not available. The objective is to design output feedback controllers that automatically...
As a common technology for fault tolerance and load balance, rollback-recovery faces the challenges of scalability and inherent variability in those long-running large-scale applications with grids as the computing infrastructure. Among the rollback recovery schemes, pessimistic message logging protocols (PMLPs) and coordinated checkpointing protocols (CCPs) are the most popular in practice. Although...
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