Towards Fault-tolerant Software Architectures
نویسنده
چکیده
“Sofmare engineering has produced no ejfective methods to eradicate latent sofmare faults. ” This sentence is, of course, a stereotype, but it is as true as a stereotype can get. And yet, it begs some questions. If it is not possible to construct a large software system without residual faults, is it at least possible to construct it to degrade gracefttllly cy and when U latent fault is encountered? This paper presents the approach adopted on CAATS (Canadian Automated Air Traffic System), and argues that 00 design arid certain architectural properties are the enabling elements towards a true fault-tolerant software architecture.
منابع مشابه
A New Trend on the Development of Fault-Tolerant Applications: Software Meta-Level Architectures
The purpose of this paper is to investigate a clearly defined way of developing faulttolerant applications using software meta-level architectures. Meta-level architectures are software architectures based on computational reflection. It addresses complex pieces of software: fault-tolerant software. Fault-tolerant applications must cope with several non-functional requirements to maintain its f...
متن کاملPattern-Based Synthesis of Fault-Tolerant Embedded Systems∗
The general trend towards complex technical systems with embedded software results in an increasing demand for dependable embedded systems. In this position paper, we give an overview about a pattern-based approach for the development of fault-tolerant, component-based, embedded systems. Four aspects of this approach are addressed in this paper: (1) the approach is based on an appropriate model...
متن کاملReliability and Performance Evaluation of Fault-aware Routing Methods for Network-on-Chip Architectures (RESEARCH NOTE)
Nowadays, faults and failures are increasing especially in complex systems such as Network-on-Chip (NoC) based Systems-on-a-Chip due to the increasing susceptibility and decreasing feature sizes. On the other hand, fault-tolerant routing algorithms have an evident effect on tolerating permanent faults and improving the reliability of a Network-on-Chip based system. This paper presents reliabili...
متن کاملCOFTA: Hardware-Software Co-Synthesis of Heterogeneous Distributed Embedded Systems
Embedded systems employed in critical applications demand high reliability and availability in addition to high performance. Hardware-software co-synthesis of an embedded system is the process of partitioning, mapping, and scheduling its specification into hardware and software modules to meet performance, cost, reliability, and availability goals. In this paper, we address the problem of hardw...
متن کاملSystem-Level Reliability and Sensitivity Analyses for Three Fault-Tolerant System Architectures
This paper discusses the modeling and analysis of three major fault-tolerant software system architec-tures: DRB (Distributed Recovery Blocks), NVP (N-Version Programming) and NSCP (N Self-Checking Programming). In the system-level reliability modeling domain, fault tree analysis techniques and Markov reward modeling techniques are combined to incorporate transient and permanent hardware faults...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2001