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Author : Chia-Ming Lee
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.:/5 (284 download)
Download or read book Task Scheduling in Distributed Real-time Systems Based on RTG Model written by Chia-Ming Lee and published by . This book was released on 1993 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Amira Sallow
Publisher : GRIN Verlag
ISBN 13 : 3656613400
Total Pages : 125 pages
Book Rating : 4.6/5 (566 download)
Download or read book A Fault Tolerance Distributed Real-Time System. Design and Implementation written by Amira Sallow and published by GRIN Verlag. This book was released on 2014-03-11 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: Doctoral Thesis / Dissertation from the year 2013 in the subject Computer Science - General, grade: 90, University of Mosul (College of Computer Sciences And Mathematics), language: English, abstract: Now a day completed real-time systems are distributed. One of the working area of real-time scheduling is distributed scheduling. Task scheduling in distributed systems is dealt with two levels: on the level of each processor (local scheduling), and on the level of the allocation of tasks to processors (global scheduling). In this thesis, a distributed real-time system with fault tolerance has been designed and called Fault Tolerance Distributed Real Time System FTDRTS. The system consists of heterogeneous processors act as servers and clients connected together via LAN communication network. This system has two types of scheduling schemes: (1) global model scheduling, (2) independent model scheduling for scheduling tasks in real time distributed manner. The time utility function TUF has been developed and called the DTUF (Developed TUF) function. This function gives another dimension and used to priorities’ tasks, based on whether they are Urgent or Important, or both, or neither. A fault tolerance protocol called DRT-FTIP (Distributed Real Time – Fault Tolerance Integrity Protocol) has been developed. This protocol increases the integrity of the scheduling in distributed real time systems. The proposed Distributed Real-Time system with its scheduling algorithms and integrity protocol have been designed using the Java Remote Method Invocation (RMI) and use the Flight Reservation System as a case study. The simulation results of this proposed distributed realtime system using global scheduling algorithm gives Deadline Satisfaction Ratio (DSR) equal 95%. While Accrued Utility Ratio (AUR) equal 0.7286.
Author : Wade H. Shafer
Publisher : Springer Science & Business Media
ISBN 13 : 1461519691
Total Pages : 426 pages
Book Rating : 4.4/5 (615 download)
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 38 (thesis year 1993) a total of 13,787 thesis titles from 22 Canadian and 164 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 38 reports theses submitted in 1993, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.
Author : Francis Cottet
Publisher : Wiley
ISBN 13 : 9780470847664
Total Pages : 282 pages
Book Rating : 4.8/5 (476 download)
Download or read book Scheduling in Real-Time Systems written by Francis Cottet and published by Wiley. This book was released on 2002-11-22 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: * Real-time systems are used in a wide range of applications, including command and control systems, flight control, telecommunication systems, and online purchase payment * Provides an accessible yet comprehensive treatment * of real-time computing and communications systems * Outlines the basics of real-time scheduling and scheduling policies designed for real-time applications * Each chapter contains examples and case studies along with test exercises and solutions
Author : Jong-Pyng Li
Publisher :
ISBN 13 :
Total Pages : 354 pages
Book Rating : 4.3/5 (129 download)
Download or read book Task Scheduling and Communication Support for Parallel and Distributed Real-time Systems written by Jong-Pyng Li and published by . This book was released on 1993 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Barham Abbas Aziz
Publisher :
ISBN 13 :
Total Pages : 134 pages
Book Rating : 4.:/5 (896 download)
Download or read book Dynamic Task Scheduling in Hard Real-time Distributed Systems written by Barham Abbas Aziz and published by . This book was released on 1989 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Suzhen Lin
Publisher :
ISBN 13 :
Total Pages : 206 pages
Book Rating : 4.:/5 (71 download)
Download or read book Feedback-based Task Scheduling in Real-time Systems written by Suzhen Lin and published by . This book was released on 2005 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Real-time computing is an enabling technology for many current and next generation applications. One of the key components of real-time systems is the scheduling of tasks, the objective of which is to meet task deadlines predictably. Traditional real-time task scheduling paradigms perform well in static or dynamic systems in which the workload can be accurately modeled. Unfortunately, in many complex applications, unpredictable dynamic factors exist due to which precise workload characterization is difficult. In recent years, feedback control techniques have been successfully applied to address the issue of unpredictable workload in computing systems. In this dissertation, we develop feedback-based algorithms and analysis for some important dynamic scheduling problems in real-time systems. First, we address the problem of selective herbicide spraying in precision farming application. The goal is to achieve low weed miss ratio and high CPU utilization. We carry out system identification, vehicle modeling and controller design. In our design, the requested CPU utilization is fed back and the vehicle speed is controlled. The system model is verified and performance evaluation is carried out through simulation studies. The second problem is task scheduling based on (m, k)-firm deadline constraints in real-time systems. The proposed solution feeds back the current dynamic failure rate (DFR) and adjusts the task's QoS based on DFR on-line. We also propose a novel fairness metric to evaluate the fairness in QoS among tasks achieved by the scheduler. The simulation results show that the QoS of tasks can be improved significantly while keeping the DFR below a certain threshold. The third problem is combined task scheduling with fault tolerance in real-time systems. In our model, the rate monotonic scheduling algorithm and deferrable server algorithm are used to schedule periodic and aperiodic tasks, respectively. By using feedback control technique, we adjust the capacity of the deferrable servers based on the failure rate of the periodic tasks. The performances of the systems are evaluated through simulation studies. The last problem is task scheduling in distributed real-time systems. We propose a double-loop scheme to keep the deadline miss ratio close to the set point and maximize the CPU utilization, and analyze the stability of the system in Z-domain. We also propose a global scheduling method to achieve load balancing by using a suitable load index. The performances of the systems are evaluated through simulation studies. The feedback-based solutions proposed in this dissertation are based on the principle of controlling the trade-off between deadline miss ratio and resource utilization. This idea can be adapted not only to other scheduling problems in real-time systems, but also to scheduling problems in non-real-time systems.
Author : Sanjay Madria
Publisher : Springer Nature
ISBN 13 : 3030371883
Total Pages : 466 pages
Book Rating : 4.0/5 (33 download)
Download or read book Big Data Analytics written by Sanjay Madria and published by Springer Nature. This book was released on 2019-12-12 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 7th International Conference on Big Data analytics, BDA 2019, held in Ahmedabad, India, in December 2019. The 25 papers presented in this volume were carefully reviewed and selected from 53 submissions. The papers are organized in topical sections named: big data analytics: vision and perspectives; search and information extraction; predictive analytics in medical and agricultural domains; graph analytics; pattern mining; and machine learning.
Author : IEEE Computer Society
Publisher :
ISBN 13 :
Total Pages : 456 pages
Book Rating : 4.:/5 (321 download)
Download or read book Proceedings written by IEEE Computer Society and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: COMPSAC is a forum for presentation and discussion of problems in the specification, design, implementation, and evaluation of software and applications. The proceedings of COMPSAC'95 comprise 58 technical papers and three keynote addresses. Technical sessions include advances in formal methods, kno
Author : Jun Sun
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (31 download)
Download or read book Bounding the End-to-end Response Times of Tasks in a Distributed Real-time System Using the Direct Synchronization Protocol written by Jun Sun and published by . This book was released on 1996 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "In a distributed real-time system, a task may consist of a chain of subtasks which execute on different processors. In order to guarantee that all timing constraints are met in such a system, it is imperative to be able to determine the end-to-end response time for each task. This report focuses on distributed systems where tasks are periodic and scheduled according to fixed priority scheduling algorithms. Moreover, if a subtask has predecessors, every instance of the subtask is released as soon as the corresponding instance of the immediate predecessor subtask completes. This report describes an algorithm that can be used to find upper bounds on the end-to-end response times of tasks in such a distributed real-time system."
Author : Hung-Yang Chang
Publisher :
ISBN 13 :
Total Pages : 332 pages
Book Rating : 4.:/5 (89 download)
Download or read book Dynamic Scheduling Algorithms for Distributed Soft Real-time Systems written by Hung-Yang Chang and published by . This book was released on 1987 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sade H Shafer
Publisher : Springer Science & Business Media
ISBN 13 :
Total Pages : 440 pages
Book Rating : 4.0/5 ( download)
Download or read book Masters Theses in the Pure and Applied Sciences written by Sade H Shafer and published by Springer Science & Business Media. This book was released on 1995 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cited in Sheehy, Chen, and Hurt . Volume 38 (thesis year 1993) reports a total of 13,787 thesis titles from 22 Canadian and 164 US universities. As in previous volumes, thesis titles are arranged by discipline and by university within each discipline. Any accredited university or college with a grad
Author : Barbara R. Thielen
Publisher :
ISBN 13 :
Total Pages : 174 pages
Book Rating : 4.:/5 (55 download)
Download or read book Simulation of a Job Scheduling Algorithm for a Distributed Real-time System written by Barbara R. Thielen and published by . This book was released on 1986 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ying Hao
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (289 download)
Download or read book Task scheduling in hard real-time distributed systems on a synchronized single-channel broadcasting network written by Ying Hao and published by . This book was released on 1991 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "This paper proposes a new scheme for global scheduling in a distributed system using a synchronized single-channel broadcasting network. Unlike existing solutions, our scheme does not require complete global state information to be collected for a node, which has an unschedulable aperiodic task, to find a node which can execute the task. The nodes are organized in our system in a logical ring fashion to synchronize the global scheduling process. To evaluate the performance of our scheme, two protocols are developed. Simulation results show the performance of the scheme close to an ideal distributed system, in which the centralized global scheduler takes care of aperiodic tasks without any communication and task migration overhead."
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781724989024
Total Pages : 30 pages
Book Rating : 4.9/5 (89 download)
Download or read book A Distributed Scheduling Algorithm for Heterogeneous Real-Time Systems written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-09 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much of the previous work on load balancing and scheduling in distributed environments was concerned with homogeneous systems and homogeneous loads. Several of the results indicated that random policies are as effective as other more complex load allocation policies. The effects of heterogeneity on scheduling algorithms for hard real time systems is examined. A distributed scheduler specifically to handle heterogeneities in both nodes and node traffic is proposed. The performance of the algorithm is measured in terms of the percentage of jobs discarded. While a random task allocation is very sensitive to heterogeneities, the algorithm is shown to be robust to such non-uniformities in system components and load. Zeineldine, Osman and El-Toweissy, Mohamed and Mukkamala, Ravi Unspecified Center NAG1-1114; NAG1-1154...
Author :
Publisher :
ISBN 13 :
Total Pages : 700 pages
Book Rating : 4.3/5 (91 download)
Download or read book Proceedings of the ... International Conference on Parallel and Distributed Information Systems written by and published by . This book was released on 1992 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 692 pages
Book Rating : 4.E/5 ( download)
Download or read book Proceedings, ICPADS'92 written by and published by . This book was released on 1992 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
