The OMG’s Real-Time CORBA (RT-CORBA) and Fault-Tolerant CORBA (FT-CORBA) specifications make it possible for today’s CORBA implementations to exhibit either real-time or fault tolerance in isolation. While real-time requires a priori knowledge of the system’s temporal operation, fault tolerance necessarily deals with faults that occur unexpectedly, and with possibly unpredictable fault recovery...

Within the ESPRIT project EFTOS (Embedded Fault-Tolerant Supercomputing), a framework is developed to integrate fault tolerance flexibly and easily into distributed embedded HPC applications . This framework consists of a variety of reusable fault tolerance modules acting at different levels. The cost and performance overhead of generic Operating System and Hardware level fault tolerance mechan...

Cloud computing now a day's become most popular and reliable computing technique for organizations and individuals. In the cloud environments, data availability and backup replication are critical and complex issues in the an efficient fault tolerance policy is the major. Fault tolerance policy is the strategy in action when a fault occurs in the system. Taking backups is the one of the most us...

Grid computing is defined as geographically distributed, heterogeneity (different hardware, software and networks), resource sharing, multiple administrators, dependable access, and Pervasive access within dynamic organizations. In grid computing, the rate of failure is much greater than in traditional parallel computing. Therefore, the fault tolerance is an important property in order to achie...

Masking fault-tolerance guarantees that programs continually satisfy their specii-cation in the presence of faults. By way of contrast, nonmasking fault-tolerance does not guarantee as much: it merely guarantees that when faults stop occurring, program executions converge to states from where programs continually (re)satisfy their speciication. In this paper, we show that an eeective method to ...

Gregory F. Sullivan 1

cloud computing is the latest technology that involves distributed computation over the internet. it meets the needs of users through sharing resources and using virtual technology. the workflow user applications refer to a set of tasks to be processed within the cloud environment. scheduling algorithms have a lot to do with the efficiency of cloud computing environments through selection of su...

AUTOMATIC SYNTHESIS OF FAULT-TOLERANCE By Ali Ebnenasir Fault-tolerance is an important property of today’s software systems as we rely on computers in our daily affairs (e.g., medical equipments, transportation systems, etc). Since it is difficult (if not impossible) to anticipate all classes of faults that perturb a program while designing that program, it is desirable to incrementally add fa...

Cloud Computing, with its great potentials in low cost and on-demand services, is an auspicious computing platform for both commercial and non-commercial computation clients. Cloud Computing aims to provide reliable services within data centres that contain servers, storage and networks. The services are delivered to the users transparently without their need to know the details of the underlyi...

Wireless Sensor Networks (WSN) are useful for monitoring of physical conditions and passing the data gathered to the required location. They are like any other system prone to failure due to limitation of resources. In this paper we address fault tolerance concept in general, give analysis to the definition of fault tolerance and terms related to it based on the system requirements. We explored...