This report is an introduction to fault-tolerance concepts and systems, mainly from the hardware point of view. An introduction to the terminology is given, and different ways of achieving fault-tolerance with redundancy is studied. Knowledge of software fault-tolerance is important, so an introduction to software fault-tolerance is also given. Finally, some systems are studied as case examples...

Previous works on edge-fault tolerance with respect to hypercubes Qn are mainly focused on 1-edge fault and 2or 3edge fault with limited size of n. We give a construction scheme for 2-EFT(Qn) graphs and 3-EFT(Qn) graphs, where n is arbitrarily large. In our constructions, approximately log n extra degree is added to the vertices of Qn for 2-edge-fault tolerance, and one more degree for 3-edge-f...

Adding fault tolerance to embedded supercomputing applications is becoming an issue of great significance, especially as these applications support critical parts of our everyday life in the modern “Information Society”. To this end, a software middleware framework is presented that features a collection of flexible and reusable fault tolerance modules acting at different levels and coping with...

Fault tolerance is critical for distributed stream processing systems, yet achieving error-free fault tolerance often incurs substantial performance overhead. We present AF-Stream, a distributed stream processing system that addresses the trade-off between performance and accuracy in fault tolerance. AF-Stream builds on a notion called approximate fault tolerance, whose idea is to mitigate back...

This paper presents the FTSET tool for fault tolerance evaluation and improvement of Artificial Neural Networks. Fault tolerance is a characteristic of parallel distributed systems such as neural networks. Although there is a built-in fault tolerance in neural networks, it is possible to improve this characteristic, but changing the structure of an artificial neural network to improve its fault...

To provide a computing system to be dependable fault tolerance mechanisms have to be included. Especially massive parallelism represents a new challenge for fault tolerance. In this paper we discuss basic hardware fault tolerance measures for massively parallel multiprocessors and solutions realized for and integrated into different multiprocessor architectures. Further we present our validatio...

in this paper, an efficient fault-tolerant routing algorithm for mobile ad-hoc networks (manets) is presented. the proposed algorithm increases the network fault-tolerance using natural redundancy of ad-hoc networks. this algorithm is carried out in two stages; 1) the selection of backup nodes 2) the selection of backup route(s). in the first stage, the proposed algorithm chooses nodes with the...

mobile computing systems are made up of different components among which mobile support stations (msss) play a key role. this paper proposes an efficient mss-based non-blocking coordinated checkpointing scheme for mobile computing environment. in the scheme suggested nearly all aspects of checkpointing and their related overheads are forwarded to the msss and as a result the workload of mobile ...

Service-oriented systems are usually composed by heterogeneous Web services, which are distributed across the Internet and provided by organizations. Building highly reliable service-oriented systems is a challenge due to the highly dynamic nature of Web services. In this paper, the authors apply software fault tolerance techniques for Web services, where the component failures are handled by f...

In order to solve effectively the problem of evaluating the wireless sensor network fault tolerance, this paper presents an evaluation index of the topological tolerance for failure node according to the ability of the topology keeping network connect and cover in case of existing failure nodes and establishes a quantitative evaluation model of topology fault tolerance according to semi-Markov ...