Full chip statistical fault injection has been performed on a hardware emulated POWER6 platform. These results were validated against proton beam injection results. The fault isolation, error recovery and error logging capabilities of the POWER6 enabled measurement of the architectural derating factors. The proportion of errors as well as derating factors matched well between the simulated and ...

This work proposes a Genetic Algorithm (GA) based on-line testing and recovery mechanism for reconfigurable critical digital circuits. Given the input / output specifications for a circuit, multiple versions (n) of the circuit are evolved using GA techniques. The n different versions are evolved to provide 100% fault coverage. A TMR fault tolerant circuit is designed using three different versi...

In this paper. we review the two existing methods of producing fault-tolerant software and the;r associated reliability models. A new approach to software fault-tolerance, the Consensus Recovery Block, is proposed. Its reliability model 1S used to demonstrate its superiority over the conventional methods.

In this article, we focus on efficient synthesis of fault-tolerant timed models from their fault-intolerant version. Although the complexity of the synthesis problem is known to be polynomial time in the size of the time-abstract bisimulation of the input model, the state of the art currently lacks synthesis algorithms that can be efficiently implemented. This is in part due to the fact that sy...

Problem statement: In peer-to-peer networks, Byzantine fault tolerance refers to the capability of a system to tolerate Byzantine faults. It can be achieved by replicating the server and by ensuring all server replicas reach an agreement on the input despite Byzantine faulty replicas and clients. Since malicious attacks and software errors can cause faulty nodes to exhibit Byzantine behavior, B...

This paper considers the problem of automatic fault diagnosis for transmission lines in large scale power networks. Since faults in transmission lines threatens stability of the entire power network, fast and reliable fault diagnosis is an important problem in transmission line protection. This work is the first paper exploiting sparse signal recovery for the fault-diagnosis problem in power ne...

We have studied the retrieve-and-propose problem solving method, a specialization of the general case-based reasoning method, in terms of its tasks in the context of fault-recovery domains. We have analyzed the case retrieval and learning tasks that are primarily used in the retrieveand-propose method, decomposed them into appropriate subtasks, associated decisions for selecting each subtask, a...

This report discusses architectures for safety-critical sysems. The report summarises the existing literature in the area as well as the guidance provided by existing safetycritical system development standards. We discuss the three constituent functions of fault tolerant architectures: error detection, damage assessment and confinement and error recovery. We also consider methods for fault pre...

The phenomenal growth of QoS-aware applications over the Internet has accelerated the development of key technologies such as Differentiated Services (DiffServ). Although QoS is provided through class-based service differentiation, the aspect of fault tolerance is not addressed in the DiffServ architecture. For traditional IP networks, the underlying link state protocol provides fault detection...

We deployed a dense linear array of 45 seismometers across and along the San Andreas fault near Parkfield a week after the M 6.0 Parkfield earthquake on 28 September 2004 to record fault-zone seismic waves generated by aftershocks and explosions. Seismic stations and explosions were co-sited with our previous experiment conducted in 2002. The data from repeated shots detonated in the fall of 20...