Download or read book Schedulability Analysis of Real time Mode Change for Imprecise Computation on Multi Core Platforms written by 楊昌民 and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Run time Schedulability Analysis of State Change for Real time Imprecise Computation on Heterogeneous Platforms written by 蘇威倫 and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scheduling in Real time Systems to Ensure Graceful Degradation written by Wei-Kuan Shih and published by . This book was released on 1992 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Schedulability Analysis of Non preemptive Real time Scheduling for Multicore Processors with Shared Caches written by Jun Xiao and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A DEVS Based Schedulability Analysis Framework for Real Time Multicore Systems written by and published by . This book was released on 2020 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: At present, real-time systems have become widely used in many fields. The major challenge in designing real-time systems are the time constraints. In this work, we build a framework to simulate the scheduler in real-time operating systems based on discrete event system specification (DEVS) formalism. And we use different schedulability research methods to explore the difference of schedulability between different scheduling algorithms.
Download or read book Real Time Systems Architecture Scheduling and Application written by Seyed Morteza Babamir and published by IntechOpen. This book was released on 2012-04-11 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a rich text for introducing diverse aspects of real-time systems including architecture, specification and verification, scheduling and real world applications. It is useful for advanced graduate students and researchers in a wide range of disciplines impacted by embedded computing and software. Since the book covers the most recent advances in real-time systems and communications networks, it serves as a vehicle for technology transition within the real-time systems community of systems architects, designers, technologists, and system analysts. Real-time applications are used in daily operations, such as engine and break mechanisms in cars, traffic light and air-traffic control and heart beat and blood pressure monitoring. This book includes 15 chapters arranged in 4 sections, Architecture (chapters 1-4), Specification and Verification (chapters 5-6), Scheduling (chapters 7-9) and Real word applications (chapters 10-15).
Download or read book Scheduling Algorithms for Imprecise Computation in Real time System written by Chin Siong Wong and published by . This book was released on 199? with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scheduling of Overload tolerant Computation and Multi mode Communication in Real time Systems written by Akramul Azim and published by . This book was released on 2014 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Real-time tasks require sufficient resources to meet deadline constraints. A component should provision sufficient resources for its workloads consisting of tasks to meet their deadlines. Supply and demand bound functions can be used to analyze the schedulability of workloads. The demand-bound function determines the maximum required computational units for a given workload and the supply-bound function determines the minimum possible resources supplied to the workload. A component will experience an overload if it receives fewer resources than required. An overload will be transient if it occurs for a bounded amount of time. Most work concentrates on designing components that avoid overloads by over-provisioning resources even though some computational units such as control system components can tolerate transient overloads. Overload-tolerant components can utilize resources more efficiently if over-provisioning of resources can be avoided. First, this dissertation presents the design of an efficient periodic resource model for scheduling computation of components that can tolerate transient overloads under the Earliest Deadline First (EDF) scheduling policy. We propose a periodic resource model for overload-tolerant components to address three problems: (1) characterize overloads and determine metrics of interest (i.e., delay), (2) derive a model to compute a periodic resource supply for a given workload and a worst-case tolerable delay, and (3) find a periodic resource supply for given control system specifications with a worst-case delay. The derived periodic resource supply can be used to derive an overload-tolerant component interface. Overload-tolerant real-time components can connect with each other in a distributed manner and thus require communication scheduling for reliable and guaranteed transmissions. Moreover, applications may require multi-mode communication for efficient data transmission. Second, this dissertation discusses communication schedules for multi-mode distributed components. Since distributed multi-mode applications are prone to suffer from delays incurred during mode changes, good communication schedules have low average mode-change delays. A key problem in designing multi-mode communication in real-time systems is the generation of schedules to move away the complexity of schedule design from the developer. We propose a mechanism to generate multi-mode communication schedules using optimization constraints associated with timing requirements. We illustrate a workflow from specifications to the generation of communication schedules through a real-time video monitoring case-study. Experimental analysis for the case-study demonstrates that schedules generated using the proposed method reduce the average mode-change delay compared to a randomized algorithm and the well-known EDF scheduling policy. Finally, this thesis discusses the synthesis of schedules for computation and communication to achieve not only performance but also separation of concerns for reducing complexity and increasing safety. To integrate overload-tolerant components using real-time communication, we derive specifications of component interfaces using the characterization of overloads and the proposed periodic resource model. The generation of communication schedules uses the specifications of interfaces which include timing requirements of possible transient overloads. A walk-through case-study explains the steps necessary to generate communication schedules using component interfaces. The interfaces provide safety through isolation of transient overload-tolerant components and the generated communication schedules provide high performance as a result of their low average mode-change delay.
Download or read book Real Time Systems Design and Analysis written by Phillip A. Laplante and published by Wiley-IEEE Press. This book was released on 1997 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: "IEEE Press is pleased to bring you this Second Edition of Phillip A. Laplante's best-selling and widely-acclaimed practical guide to building real-time systems. This book is essential for improved system designs, faster computation, better insights, and ultimate cost savings. Unlike any other book in the field, REAL-TIME SYSTEMS DESIGN AND ANALYSIS provides a holistic, systems-based approach that is devised to help engineers write problem-solving software. Laplante's no-nonsense guide to real-time system design features practical coverage of: Related technologies and their histories Time-saving tips * Hands-on instructions Pascal code Insights into decreasing ramp-up times and more!"
Download or read book Hard Real Time Computing Systems written by Giorgio C Buttazzo and published by Springer Science & Business Media. This book was released on 2011-09-10 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: This updated edition offers an indispensable exposition on real-time computing, with particular emphasis on predictable scheduling algorithms. It introduces the fundamental concepts of real-time computing, demonstrates the most significant results in the field, and provides the essential methodologies for designing predictable computing systems used to support time-critical control applications. Along with an in-depth guide to the available approaches for the implementation and analysis of real-time applications, this revised edition contains a close examination of recent developments in real-time systems, including limited preemptive scheduling, resource reservation techniques, overload handling algorithms, and adaptive scheduling techniques. This volume serves as a fundamental advanced-level textbook. Each chapter provides basic concepts, which are followed by algorithms, illustrated with concrete examples, figures and tables. Exercises and solutions are provided to enhance self-study, making this an excellent reference for those interested in real-time computing for designing and/or developing predictable control applications.
Download or read book Soft Real Time Systems Predictability vs Efficiency written by Giorgio C Buttazzo and published by Springer Science & Business Media. This book was released on 2006-07-02 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hard real-time systems are very predictable, but not sufficiently flexible to adapt to dynamic situations. They are built under pessimistic assumptions to cope with worst-case scenarios, so they often waste resources. Soft real-time systems are built to reduce resource consumption, tolerate overloads and adapt to system changes. They are also more suited to novel applications of real-time technology, such as multimedia systems, monitoring apparatuses, telecommunication networks, mobile robotics, virtual reality, and interactive computer games. This unique monograph provides concrete methods for building flexible, predictable soft real-time systems, in order to optimize resources and reduce costs. It is an invaluable reference for developers, as well as researchers and students in Computer Science.
Download or read book Real Time Systems written by Rajib Mall and published by Pearson Education India. This book was released on 2009-05 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: The presence and use of real-time systems is becoming increasingly common. Examples of such systems range from nuclear reactors, to automotive controllers, and also entertainment software such as games and graphics animation. The growing importance of rea.
Download or read book Introduction to Embedded Systems Second Edition written by Edward Ashford Lee and published by MIT Press. This book was released on 2017-01-06 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introduction to the engineering principles of embedded systems, with a focus on modeling, design, and analysis of cyber-physical systems. The most visible use of computers and software is processing information for human consumption. The vast majority of computers in use, however, are much less visible. They run the engine, brakes, seatbelts, airbag, and audio system in your car. They digitally encode your voice and construct a radio signal to send it from your cell phone to a base station. They command robots on a factory floor, power generation in a power plant, processes in a chemical plant, and traffic lights in a city. These less visible computers are called embedded systems, and the software they run is called embedded software. The principal challenges in designing and analyzing embedded systems stem from their interaction with physical processes. This book takes a cyber-physical approach to embedded systems, introducing the engineering concepts underlying embedded systems as a technology and as a subject of study. The focus is on modeling, design, and analysis of cyber-physical systems, which integrate computation, networking, and physical processes. The second edition offers two new chapters, several new exercises, and other improvements. The book can be used as a textbook at the advanced undergraduate or introductory graduate level and as a professional reference for practicing engineers and computer scientists. Readers should have some familiarity with machine structures, computer programming, basic discrete mathematics and algorithms, and signals and systems.
Download or read book System Design Modeling and Simulation written by Claudius Ptolemaeus and published by Lee & Seshia. This book was released on 2013-09-27 with total page 687 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a definitive introduction to models of computation for the design of complex, heterogeneous systems. It has a particular focus on cyber-physical systems, which integrate computing, networking, and physical dynamics. The book captures more than twenty years of experience in the Ptolemy Project at UC Berkeley, which pioneered many design, modeling, and simulation techniques that are now in widespread use. All of the methods covered in the book are realized in the open source Ptolemy II modeling framework and are available for experimentation through links provided in the book. The book is suitable for engineers, scientists, researchers, and managers who wish to understand the rich possibilities offered by modern modeling techniques. The goal of the book is to equip the reader with a breadth of experience that will help in understanding the role that such techniques can play in design.
Download or read book TinyML written by Pete Warden and published by O'Reilly Media. This book was released on 2019-12-16 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deep learning networks are getting smaller. Much smaller. The Google Assistant team can detect words with a model just 14 kilobytes in size—small enough to run on a microcontroller. With this practical book you’ll enter the field of TinyML, where deep learning and embedded systems combine to make astounding things possible with tiny devices. Pete Warden and Daniel Situnayake explain how you can train models small enough to fit into any environment. Ideal for software and hardware developers who want to build embedded systems using machine learning, this guide walks you through creating a series of TinyML projects, step-by-step. No machine learning or microcontroller experience is necessary. Build a speech recognizer, a camera that detects people, and a magic wand that responds to gestures Work with Arduino and ultra-low-power microcontrollers Learn the essentials of ML and how to train your own models Train models to understand audio, image, and accelerometer data Explore TensorFlow Lite for Microcontrollers, Google’s toolkit for TinyML Debug applications and provide safeguards for privacy and security Optimize latency, energy usage, and model and binary size
Download or read book The Multi Agent Transport Simulation MATSim written by Andreas Horni and published by Ubiquity Press. This book was released on 2016-08-10 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MATSim (Multi-Agent Transport Simulation) software project was started around 2006 with the goal of generating traffic and congestion patterns by following individual synthetic travelers through their daily or weekly activity programme. It has since then evolved from a collection of stand-alone C++ programs to an integrated Java-based framework which is publicly hosted, open-source available, automatically regression tested. It is currently used by about 40 groups throughout the world. This book takes stock of the current status. The first part of the book gives an introduction to the most important concepts, with the intention of enabling a potential user to set up and run basic simulations. The second part of the book describes how the basic functionality can be extended, for example by adding schedule-based public transit, electric or autonomous cars, paratransit, or within-day replanning. For each extension, the text provides pointers to the additional documentation and to the code base. It is also discussed how people with appropriate Java programming skills can write their own extensions, and plug them into the MATSim core. The project has started from the basic idea that traffic is a consequence of human behavior, and thus humans and their behavior should be the starting point of all modelling, and with the intuition that when simulations with 100 million particles are possible in computational physics, then behavior-oriented simulations with 10 million travelers should be possible in travel behavior research. The initial implementations thus combined concepts from computational physics and complex adaptive systems with concepts from travel behavior research. The third part of the book looks at theoretical concepts that are able to describe important aspects of the simulation system; for example, under certain conditions the code becomes a Monte Carlo engine sampling from a discrete choice model. Another important aspect is the interpretation of the MATSim score as utility in the microeconomic sense, opening up a connection to benefit cost analysis. Finally, the book collects use cases as they have been undertaken with MATSim. All current users of MATSim were invited to submit their work, and many followed with sometimes crisp and short and sometimes longer contributions, always with pointers to additional references. We hope that the book will become an invitation to explore, to build and to extend agent-based modeling of travel behavior from the stable and well tested core of MATSim documented here.
Download or read book Real time Systems and Their Programming Languages written by Alan Burns and published by Addison Wesley Publishing Company. This book was released on 1990 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: A survey of real-time systems and the programming languages used in their development. Shows how modern real-time programming techniques are used in a wide variety of applications, including robotics, factory automation, and control. A critical requirement for such systems is that the software must
