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Fault tolerant scheduling for multiprocessor systems
Title
Fault tolerant scheduling for multiprocessor systems.
Creator
Mahanthi, Gangadhar., Florida Atlantic University, Wu, Jie, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description
In the last few years, it has become profound to achieve higher performance of computers by solely upgrading logic technology. This required a move to a parallel processing system or a multiprocessor system in order to build faster computer systems. The importance of multiprocessor systems is increasing due to many reasons, one of which is reliability. In a multiprocessor system, a number of tasks may concurrently exist. To operate the system efficiently, one must carefully schedule the tasks...
Show moreIn the last few years, it has become profound to achieve higher performance of computers by solely upgrading logic technology. This required a move to a parallel processing system or a multiprocessor system in order to build faster computer systems. The importance of multiprocessor systems is increasing due to many reasons, one of which is reliability. In a multiprocessor system, a number of tasks may concurrently exist. To operate the system efficiently, one must carefully schedule the tasks. This thesis proposes a set of algorithms to schedule these tasks exploiting the inherent redundancy of processors in a multiprocessor system. Also discussed are some reliability issues and application to different networks with some examples.
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Date Issued
1992
PURL
http://purl.flvc.org/fcla/dt/14822
Subject Headings
Multiprocessors, Fault-tolerant computing, Electronic digital computers--Reliability
Format
Document (PDF)
design of reliable decentralized computer systems
Title
The design of reliable decentralized computer systems.
Creator
Wu, Jie., Florida Atlantic University, Fernandez, Eduardo B., College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description
With the increase in the applications of computer technology, there are more and more demands for the use of computer systems in the area of real-time applications and critical systems. Reliability and performance are fundamental design requirements for these applications. In this dissertation, we develop some specific aspects of a fault-tolerant decentralized system architecture. This system can execute concurrent processes and it is composed of processing elements that have only local...
Show moreWith the increase in the applications of computer technology, there are more and more demands for the use of computer systems in the area of real-time applications and critical systems. Reliability and performance are fundamental design requirements for these applications. In this dissertation, we develop some specific aspects of a fault-tolerant decentralized system architecture. This system can execute concurrent processes and it is composed of processing elements that have only local memories with point-to-point communication. A model using hierarchical layers describes this system. Fault tolerance techniques are discussed for the applications, software, operating system, and hardware layers of the model. Scheduling of communicating tasks to increase performance is also addressed. Some special problems such as the Byzantine Generals problem are considered. We have shown that, by combining reliable techniques on different layers and with consideration of system performance, one can provide a system with a very high level reliability as well as performance.
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Date Issued
1989
PURL
http://purl.flvc.org/fcla/dt/12237
Subject Headings
Electronic digital computers--Reliability, Fault-tolerant computing, System design, Computer software--Reliability
Format
Document (PDF)
ultrareliable multicomputer architecture for real time control applications
Title
An ultrareliable multicomputer architecture for real time control applications.
Creator
Buechler, Peter Charles., Florida Atlantic University, Fernandez, Eduardo B.
Abstract/Description
This thesis considers the design of ultrareliable multicomputers for control applications. The fault tolerance problem is divided into three subproblems: software, processing node, and communication fault tolerance. Design is performed using layers of abstraction, with fault tolerance implemented by dedicated layers. For software fault tolerance, new constructs for concurrent n-version programming are introduced. For processing node fault tolerance, the distributed fault tolerance (DFT)...
Show moreThis thesis considers the design of ultrareliable multicomputers for control applications. The fault tolerance problem is divided into three subproblems: software, processing node, and communication fault tolerance. Design is performed using layers of abstraction, with fault tolerance implemented by dedicated layers. For software fault tolerance, new constructs for concurrent n-version programming are introduced. For processing node fault tolerance, the distributed fault tolerance (DFT) concept of Chen and Chen is extended to allow for arbitrary failures. Communication fault tolerance is achieved with multicasting on a fault-tolerant graph (FG) network. Reliability models are developed for each of the layers, and a performance model is developed for the communication layer. An example flight control system is compared to currently existing architectures.
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Date Issued
1989
PURL
http://purl.flvc.org/fcla/dt/14573
Subject Headings
Computers--Reliability, Fault-tolerant computing, Real-time data processing, Flight control
Format
Document (PDF)