Cache Modeling for Timing Analysis in Real-Time Systems

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Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783844384703
Total Pages : 116 pages
Book Rating : 4.3/5 (847 download)

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Book Synopsis Cache Modeling for Timing Analysis in Real-Time Systems by : Yanhui Li

Download or read book Cache Modeling for Timing Analysis in Real-Time Systems written by Yanhui Li and published by LAP Lambert Academic Publishing. This book was released on 2011-08 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Caches in Embedded Systems improve average case performance, but they are a source of unpredictability, especially in the worst case software timing analysis with the consideration of data caches. This is a critical problem in real-time systems, where tight Worst Case Execution Time (WCET) is required for their schedulability analysis. Few works have studied data cache impacts on the WCET of programs, but only for programs with no input-dependent data accesses. To provide an efficient and accurate analysis for input-dependent data accesses, we develop classified cache architecture and a WCET framework for the architecture. Our work classifies predictable and unpredictable accesses, then allocates them into predictable caches and unpredictable caches accordingly, and uses CME (Cache Miss Equations) and our reuse-distance-based algorithm for their timing analysis respectively. Compared with simulation, our analysis framework produces a very good WCET tightness, and our architecture creates almost no hardware overhead or performance degradation. In addition, we examine NP-completeness of WCET analysis. We also explore data allocation techniques to improve system performance.

Instruction and Data Cache Timing Analysis in Fixed-priority Preemptive Real-time Systems

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Publisher : Cuvillier Verlag
ISBN 13 : 386727195X
Total Pages : 209 pages
Book Rating : 4.8/5 (672 download)

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Book Synopsis Instruction and Data Cache Timing Analysis in Fixed-priority Preemptive Real-time Systems by : Jan Staschulat

Download or read book Instruction and Data Cache Timing Analysis in Fixed-priority Preemptive Real-time Systems written by Jan Staschulat and published by Cuvillier Verlag. This book was released on 2007 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Performance Analysis of Real-Time Embedded Software

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Publisher : Springer Science & Business Media
ISBN 13 : 1461551315
Total Pages : 144 pages
Book Rating : 4.4/5 (615 download)

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Book Synopsis Performance Analysis of Real-Time Embedded Software by : Yau-Tsun Steven Li

Download or read book Performance Analysis of Real-Time Embedded Software written by Yau-Tsun Steven Li and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Embedded systems are characterized by the presence of processors running application-specific software. Recent years have seen a large growth of such systems, and this trend is projected to continue with the growth of systems on a chip. Many of these systems have strict performance and cost requirements. To design these systems, sophisticated timing analysis tools are needed to accurately determine the extreme case (best case and worst case) performance of the software components. Existing techniques for this analysis have one or more of the following limitations: they cannot model complicated programs they cannot model advanced micro-architectural features of the processor, such as cache memories and pipelines they cannot be easily retargeted for new hardware platforms. In Performance Analysis of Real-Time Embedded Software, a new timing analysis technique is presented to overcome the above limitations. The technique determines the bounds on the extreme case (best case and worst case) execution time of a program when running on a given hardware system. It partitions the problem into two sub-problems: program path analysis and microarchitecture modeling. Performance Analysis of Real-Time Embedded Software will be of interest to Design Automation professionals as well as designers of circuits and systems.

Cache Design and Timing Analysis for Preemptive Multi-tasking Real-time Uniprocessor Systems

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Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (67 download)

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Book Synopsis Cache Design and Timing Analysis for Preemptive Multi-tasking Real-time Uniprocessor Systems by : Yudong Tan

Download or read book Cache Design and Timing Analysis for Preemptive Multi-tasking Real-time Uniprocessor Systems written by Yudong Tan and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, we propose an approach to estimate the Worst Case Response Time (WCRT) of each task in a preemptive multi-tasking single-processor real-time system utilizing an L1 cache. The approach combines inter-task cache eviction analysis and intra-task cache access analysis to estimate the Cache Related Preemption Delay (CRPD). CRPD caused by preempting task(s) is then incorporated into WCRT analysis. We also propose a prioritized cache to reduce CRPD by exploiting cache partitioning technique. Our WCRT analysis approach is then applied to analyze the behavior of a prioritized cache. Four sets of applications with up to six concurrent tasks running are used to test our WCRT analysis approach and the prioritized cache. The experimental results show that our WCRT analysis approach can tighten the WCRT estimate by up to 32% (1.4X) over prior state-of-the-art. By using a prioritized cache, we can reduce the WCRT estimate of tasks by up to 26%, as compared to a conventional set associative cache.

Static Probabilistic Timing Analysis for Real-time Embedded Systems in Presence of Faults

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Publisher :
ISBN 13 :
Total Pages : 170 pages
Book Rating : 4.:/5 (112 download)

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Book Synopsis Static Probabilistic Timing Analysis for Real-time Embedded Systems in Presence of Faults by : Chao Chen

Download or read book Static Probabilistic Timing Analysis for Real-time Embedded Systems in Presence of Faults written by Chao Chen and published by . This book was released on 2017 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: A cache is typically the bridge between a processor and its main memory. It significantly reduces the access latencies to memory blocks and its timing behavior. Random caches-caches with a random replacement policy-have been proposed to improve timing behavior estimates in critical real-time embedded systems (CRTESs) by reducing pathological cases due to systematic cache misses. Measurement Based Probabilistic Timing Analysis (MBPTA)and Static Probabilistic Timing Analysis (SPTA) aim at providing safe probabilistic Worst Case Execution Time (pWCET) estimates for random caches. In this dissertation, we present research work on timing estimation based on SPTA. State-of-the-art SPTA methodologies produce safe and tight pWCET estimates. However, as semiconductor technology scales down, CRTES components-especially their on-chip caches-become prone to faults. Consequently, we developed SPTA methodologies to estimate pWCETs in the presence of faults, and evaluated the impacts of faults on timing behaviors. To investigate faults, we first defined transient and permanent fault models. A transient fault represents a temporary change of state. The system with transient faults can be recovered using fault detection and correction techniques. A permanent fault represents a permanent change of state. It persists after its occurrence and affects the system's behavior afterwards. Additionally, we proposed a Markov chain method to model memory layout states. For each memory block access, the state changes are calculated using a transition matrix. The transient fault impacts were integrated into the transition matrix computation, and we used different groups of Markov chain models to represent the system with different number of permanent faults. Experiments showed that our SPTA method provided accurate results in the presence of both transient and permanent faults.

The Compiler Design Handbook

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Publisher : CRC Press
ISBN 13 : 1420043838
Total Pages : 784 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis The Compiler Design Handbook by : Y.N. Srikant

Download or read book The Compiler Design Handbook written by Y.N. Srikant and published by CRC Press. This book was released on 2018-10-03 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today’s embedded devices and sensor networks are becoming more and more sophisticated, requiring more efficient and highly flexible compilers. Engineers are discovering that many of the compilers in use today are ill-suited to meet the demands of more advanced computer architectures. Updated to include the latest techniques, The Compiler Design Handbook, Second Edition offers a unique opportunity for designers and researchers to update their knowledge, refine their skills, and prepare for emerging innovations. The completely revised handbook includes 14 new chapters addressing topics such as worst case execution time estimation, garbage collection, and energy aware compilation. The editors take special care to consider the growing proliferation of embedded devices, as well as the need for efficient techniques to debug faulty code. New contributors provide additional insight to chapters on register allocation, software pipelining, instruction scheduling, and type systems. Written by top researchers and designers from around the world, The Compiler Design Handbook, Second Edition gives designers the opportunity to incorporate and develop innovative techniques for optimization and code generation.

Behavioral Intervals in Embedded Software

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Publisher : Springer Science & Business Media
ISBN 13 : 1475736495
Total Pages : 207 pages
Book Rating : 4.4/5 (757 download)

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Book Synopsis Behavioral Intervals in Embedded Software by : Fabian Wolf

Download or read book Behavioral Intervals in Embedded Software written by Fabian Wolf and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: Behavioral Intervals in Embedded Software introduces a comprehensive approach to timing, power, and communication analysis of embedded software processes. Embedded software timing, power and communication are typically not unique but occur in intervals which result from data dependent behavior, environment timing and target system properties.

Verification, Model Checking, and Abstract Interpretation

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Publisher : Springer
ISBN 13 : 3662460815
Total Pages : 482 pages
Book Rating : 4.6/5 (624 download)

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Book Synopsis Verification, Model Checking, and Abstract Interpretation by : Deepak D'Souza

Download or read book Verification, Model Checking, and Abstract Interpretation written by Deepak D'Souza and published by Springer. This book was released on 2014-12-11 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 16th International Conference on Verification, Model Checking, and Abstract Interpretation, VMCAI 2015, held in Mumbai, India, in January 2015. The 24 revised full papers presented were carefully reviewed and selected from 53 submissions. The papers cover a wide range of topics including program verification, model checking, abstract interpretation, abstract domains, program synthesis, static analysis, deductive methods, program certification, error diagnosis, program transformation, and hybrid and cyberphysical systems.

VMCAI 2004

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Publisher : Springer Science & Business Media
ISBN 13 : 3540208038
Total Pages : 344 pages
Book Rating : 4.5/5 (42 download)

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Book Synopsis VMCAI 2004 by : Bernhard Steffen

Download or read book VMCAI 2004 written by Bernhard Steffen and published by Springer Science & Business Media. This book was released on 2004-01-07 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 5th International Conference on Verification, Model Checking, and Abstract Interpretation, VMCAI 2004, held in Venice, Italy in January 2004. The 22 revised full papers presented together with 4 invited contributions were carefully reviewed and selected from 68 submissions. The papers are organized in topical sections on security, formal methods, model checking, software checking, liveness and completeness, and miscellaneous.

Embedded Systems Handbook 2-Volume Set

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Publisher : CRC Press
ISBN 13 : 1420074113
Total Pages : 1503 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Embedded Systems Handbook 2-Volume Set by : Richard Zurawski

Download or read book Embedded Systems Handbook 2-Volume Set written by Richard Zurawski and published by CRC Press. This book was released on 2018-10-08 with total page 1503 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past few years there has been an dramatic upsurge in research and development, implementations of new technologies, and deployments of actual solutions and technologies in the diverse application areas of embedded systems. These areas include automotive electronics, industrial automated systems, and building automation and control. Comprising 48 chapters and the contributions of 74 leading experts from industry and academia, the Embedded Systems Handbook, Second Edition presents a comprehensive view of embedded systems: their design, verification, networking, and applications. The contributors, directly involved in the creation and evolution of the ideas and technologies presented, offer tutorials, research surveys, and technology overviews, exploring new developments, deployments, and trends. To accommodate the tremendous growth in the field, the handbook is now divided into two volumes. New in This Edition: Processors for embedded systems Processor-centric architecture description languages Networked embedded systems in the automotive and industrial automation fields Wireless embedded systems Embedded Systems Design and Verification Volume I of the handbook is divided into three sections. It begins with a brief introduction to embedded systems design and verification. The book then provides a comprehensive overview of embedded processors and various aspects of system-on-chip and FPGA, as well as solutions to design challenges. The final section explores power-aware embedded computing, design issues specific to secure embedded systems, and web services for embedded devices. Networked Embedded Systems Volume II focuses on selected application areas of networked embedded systems. It covers automotive field, industrial automation, building automation, and wireless sensor networks. This volume highlights implementations in fast-evolving areas which have not received proper coverage in other publications. Reflecting the unique functional requirements of different application areas, the contributors discuss inter-node communication aspects in the context of specific applications of networked embedded systems.

Real-time Systems Scheduling 1

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Author :
Publisher : John Wiley & Sons
ISBN 13 : 1118984382
Total Pages : 296 pages
Book Rating : 4.1/5 (189 download)

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Book Synopsis Real-time Systems Scheduling 1 by : Maryline Chetto

Download or read book Real-time Systems Scheduling 1 written by Maryline Chetto and published by John Wiley & Sons. This book was released on 2014-09-10 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Real-time systems are used in a wide range of applications, including control, sensing, multimedia, etc. Scheduling is a central problem for these computing/communication systems since responsible of software execution in a timely manner. This book provides state of knowledge in this domain with special emphasis on the key results obtained within the last decade. This book addresses foundations as well as the latest advances and findings in Real-Time Scheduling, giving all references to important papers. But nevertheless the chapters will be short and not overloaded with confusing details. Coverage includes scheduling approaches for mono-core as well as multi-core platforms, dependent tasks, networks, and notably very tremendous recent advances in scheduling of energy constrained embedded systems. Other sophisticated issues such as feedback control scheduling and timing analysis of critical applications are also addressed. This volume can serve as a textbook for courses on the topic in bachelor and in more advanced master programs. It also provides a reference for computer scientists and engineers involved in the design or the development of Cyber-Physical Systems which require up-to-date real-time scheduling solutions.

Model Checking Software

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Publisher : Springer Science & Business Media
ISBN 13 : 3540213147
Total Pages : 319 pages
Book Rating : 4.5/5 (42 download)

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Book Synopsis Model Checking Software by : Susanne Graf

Download or read book Model Checking Software written by Susanne Graf and published by Springer Science & Business Media. This book was released on 2004-03-18 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 11th International SPIN workshop on Model Checking Software, SPIN 2004, held in Barcelona, Spain, in April 2004. The 19 revised full papers presented together with the abstracts of an invited talk and 2 tutorials were carefully reviewed and selected from 48 submissions. The papers are organized in topical sections on heuristics and probabilities, improvements of SPIN, validation of timed systems, tool presentations, abstraction and symbolic methods, and applications.

On the Analysis of the Timing Behaviour of Time Randomised Caches

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Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (112 download)

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Book Synopsis On the Analysis of the Timing Behaviour of Time Randomised Caches by : Pedro Benedicte Illescas

Download or read book On the Analysis of the Timing Behaviour of Time Randomised Caches written by Pedro Benedicte Illescas and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Time Randomised caches (TRc), which can be implemented at hardware level or with software means on conventional deterministic cache designs, have been proposed for real-time systems as key enablers for Probabilistic Timing Analysis (PTA) and in particular its measurement-based variant: Measurement-Based Probabilistic Timing Analysis (MBPTA). A key parameter of MBPTA is the number of runs required to ensure representativity of the execution time measurements taken at analysis time with respect to execution times that can occur during system deployment, so that MBPTA can trustworthily be applied. In this thesis, we propose several methods to determine whether the number of observations taken at analysis, as part of the normal MBPTA application process, capture the cache events significantly impacting execution time and Worst-Case Execution Time (WCET). If this is not the case, our techniques provide the user with the number of extra runs required so that cache events are captured ensuring trustworthiness on MBPTA provided WCET estimates. Our techniques have been evaluated using a set of synthetic benchmarks and a real avionics application.

Techniques for Building Timing-Predictable Embedded Systems

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Author :
Publisher : Springer
ISBN 13 : 3319271989
Total Pages : 242 pages
Book Rating : 4.3/5 (192 download)

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Book Synopsis Techniques for Building Timing-Predictable Embedded Systems by : Nan Guan

Download or read book Techniques for Building Timing-Predictable Embedded Systems written by Nan Guan and published by Springer. This book was released on 2016-02-03 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes state-of-the-art techniques for designing real-time computer systems. The author shows how to estimate precisely the effect of cache architecture on the execution time of a program, how to dispatch workload on multicore processors to optimize resources, while meeting deadline constraints, and how to use closed-form mathematical approaches to characterize highly variable workloads and their interaction in a networked environment. Readers will learn how to deal with unpredictable timing behaviors of computer systems on different levels of system granularity and abstraction.

Embedded Software and Systems

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Publisher : Springer
ISBN 13 : 3540322973
Total Pages : 804 pages
Book Rating : 4.5/5 (43 download)

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Book Synopsis Embedded Software and Systems by : Laurence T. Yang

Download or read book Embedded Software and Systems written by Laurence T. Yang and published by Springer. This book was released on 2005-11-30 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt: Welcome to the proceedings of the 2005 International Conference on Emb- ded Software and Systems (ICESS 2005) held in Xian, China, December 16-18, 2005. With the advent of VLSI system level integration and system-on-chip, the center of gravity of the computer industry is now moving from personal c- puting into embedded computing. Embedded software and systems are incre- ingly becoming a key technological component of all kinds of complex technical systems, ranging from vehicles, telephones, aircraft, toys, security systems, to medical diagnostics, weapons, pacemakers, climate control systems, etc. The ICESS 2005 conference provided a premier international forum for - searchers, developers and providers from academia and industry to address all resulting profound challenges; to present and discuss their new ideas, - search results, applications and experience; to improve international com- nication and cooperation; and to promote embedded software and system - dustrialization and wide applications on all aspects of embedded software and systems.

Worst-Case Execution Time Aware Compilation Techniques for Real-Time Systems

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Publisher : Springer Science & Business Media
ISBN 13 : 9048199298
Total Pages : 268 pages
Book Rating : 4.0/5 (481 download)

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Book Synopsis Worst-Case Execution Time Aware Compilation Techniques for Real-Time Systems by : Paul Lokuciejewski

Download or read book Worst-Case Execution Time Aware Compilation Techniques for Real-Time Systems written by Paul Lokuciejewski and published by Springer Science & Business Media. This book was released on 2010-09-24 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: For real-time systems, the worst-case execution time (WCET) is the key objective to be considered. Traditionally, code for real-time systems is generated without taking this objective into account and the WCET is computed only after code generation. Worst-Case Execution Time Aware Compilation Techniques for Real-Time Systems presents the first comprehensive approach integrating WCET considerations into the code generation process. Based on the proposed reconciliation between a compiler and a timing analyzer, a wide range of novel optimization techniques is provided. Among others, the techniques cover source code and assembly level optimizations, exploit machine learning techniques and address the design of modern systems that have to meet multiple objectives. Using these optimizations, the WCET of real-time applications can be reduced by about 30% to 45% on the average. This opens opportunities for decreasing clock speeds, costs and energy consumption of embedded processors. The proposed techniques can be used for all types real-time systems, including automotive and avionics IT systems.

Verification, Model Checking, and Abstract Interpretation

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Publisher : Springer
ISBN 13 : 3642113192
Total Pages : 406 pages
Book Rating : 4.6/5 (421 download)

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Book Synopsis Verification, Model Checking, and Abstract Interpretation by : Gilles Barthe

Download or read book Verification, Model Checking, and Abstract Interpretation written by Gilles Barthe and published by Springer. This book was released on 2010-01-06 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the 11th International Conference on Veri?cation, Model Checking, and Abstract Interpretation (VMCAI 2010), held in Madrid, Spain, January 17–19, 2010. VMCAI 2010 was the 11th in a series of meetings. Previous meetings were held in Port Je?erson (1997), Pisa (1998), Venice (2002), New York (2003), Venice(2004),Paris(2005),Charleston(2006),Nice(2007),SanFrancisco(2008), and Savannah (2009). VMCAI centers on state-of-the-art research relevant to analysis of programs and systems and drawn from three research communities: veri?cation, model checking, and abstract interpretation. A goal is to facilitate interaction, cro- fertilization, and the advance of hybrid methods that combine two or all three areas. Topics covered by VMCAI include program veri?cation, program cert- cation, model checking, debugging techniques, abstract interpretation, abstract domains, static analysis, type systems, deductive methods, and optimization. The Program Committee selected 21 papers out of 57 submissions based on anonymous reviews and discussions in an electronic Program Committee me- ing. The principal selection criteria were relevance and quality.