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Start Over Descriptor "Systèmes embarqués" Publisher springer science and business media llc
7 results on '"Systèmes embarqués"'

1. Modulo Based Data Placement Algorithm for Energy Consumption Optimization of MapReduce System

Author

Zhi Wang, Jie Song, Jean-Marc Pierson, Hongyan He, Ge Yu, Northeastern University [Shenyang], Système d’exploitation, systèmes répartis, de l’intergiciel à l’architecture (IRIT-SEPIA), Institut de recherche en informatique de Toulouse (IRIT), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université Toulouse - Jean Jaurès - UT2J (FRANCE), Université Toulouse 1 Capitole - UT1 (FRANCE), Northeastern University (CHINA), Institut de Recherche en Informatique de Toulouse - IRIT (Toulouse, France), and Institut National Polytechnique de Toulouse - INPT (FRANCE)

Subjects
[INFO.INFO-AR]Computer Science [cs]/Hardware Architecture [cs.AR], Correctness, Map Reduce, Computer Networks and Communications, Computer science, Distributed computing, Modulo, Data management, Big data, Système d'exploitation, Réseaux et télécommunications, 02 engineering and technology, Data placement, [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI], Architectures Matérielles, 020204 information systems, 0202 electrical engineering, electronic engineering, information engineering, Production (economics), sort, business.industry, Energy consumption, Systèmes embarqués, Energy consumption optimization, Hardware and Architecture, [INFO.INFO-ES]Computer Science [cs]/Embedded Systems, 020201 artificial intelligence & image processing, [INFO.INFO-OS]Computer Science [cs]/Operating Systems [cs.OS], business, Algorithm, Software, Energy (signal processing), Information Systems
Abstract

International audience; With the explosion of data production, the efficiency of data management and analysis has been concerned by both industry and academia. Meanwhile, more and more energy is consumed by the IT infrastructure especially the larger scale distributed systems. In this paper, a novel idea for optimizing the Energy Consumption (EC for short) of MapReduce system is proposed. We argue that a fair data placement is helpful to save energy, and then we propose three goals of data placement, and a modulo based Data Placement Algorithm (DPA for short) which achieves these goals. Afterwards, the correctness of the proposed DPA is proved from both theoretical and experimental perspectives. Three different systems which implement MapReduce model with different DPAs are compared in our experiments. Our algorithm is proved to optimize EC effectively, without introducing the additional costs and delaying data loading. With the help of our DPA, the EC for the WordCount , Sort and MRBench can be reduced by 10.9 %, 8.3 % and 17 % respectively, and time consumption is reduced by 7 %, 6.3 % and 7 % respectively.

Published
2016

2. Markov-modulated M/G/1-type queue in heavy traffic and its application to time-sharing disciplines

Author

Ina Maria Verloop, H. Thorsdottir, Centrum Wiskunde & Informatica and Universiteit of Amsterdam, Réseaux, Mobiles, Embarqués, Sans fil, Satellites (IRIT-RMESS), Institut de recherche en informatique de Toulouse (IRIT), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique - CNRS (FRANCE), Centrum Wiskunde and Informatica - CWI (NETHERLANDS), Institut National Polytechnique de Toulouse - INPT (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université Toulouse - Jean Jaurès - UT2J (FRANCE), Université Toulouse 1 Capitole - UT1 (FRANCE), Institut de Recherche en Informatique de Toulouse - IRIT (Toulouse, France), and Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)

Subjects
[INFO.INFO-AR]Computer Science [cs]/Hardware Architecture [cs.AR], Mathematical optimization, Exponential distribution, Discriminatory processor sharing, Système d'exploitation, 0211 other engineering and technologies, Réseaux et télécommunications, Asymptotic distribution, 02 engineering and technology, Heavy traffic, Management Science and Operations Research, 01 natural sciences, [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI], 010104 statistics & probability, Architectures Matérielles, Joint probability distribution, FOS: Mathematics, 0101 mathematics, 60K25, 60K37, Queue, Mathematics, Processor sharing, Service (business), 021103 operations research, Markov chain, Probability (math.PR), Workload, Systèmes embarqués, Computer Science Applications, Computer Science::Performance, Computational Theory and Mathematics, Single-server queue, [INFO.INFO-ES]Computer Science [cs]/Embedded Systems, [INFO.INFO-OS]Computer Science [cs]/Operating Systems [cs.OS], Mathematics - Probability, Markov-modulation
Abstract

This paper deals with a single-server queue with modulated arrivals, service requirements and service capacity. In our first result, we derive the mean of the total workload assuming generally distributed service requirements and any service discipline which does not depend on the modulating environment. We then show that the workload is exponentially distributed under heavy-traffic scaling. In our second result, we focus on the discriminatory processor sharing (DPS) discipline. Assuming exponential, class-dependent service requirements, we show that the joint distribution of the queue lengths of different customer classes under DPS undergoes a state-space collapse when subject to heavy-traffic scaling. That is, the limiting distribution of the queue length vector is shown to be exponential, times a deterministic vector. The distribution of the scaled workload, as derived for general service disciplines, is a key quantity in the proof of the state-space collapse., 27 pages

Published
2016

3. Contract-based modeling and verification of timed safety requirements within SysML

Author

Iulia Dragomir, Iulian Ober, Christian Percebois, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université Toulouse - Jean Jaurès - UT2J (FRANCE), Université Toulouse 1 Capitole - UT1 (FRANCE), Aalto University (FINLAND), Institut de Recherche en Informatique de Toulouse - IRIT (Toulouse, France), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Aalto University, Modèles, Architectures, Composants, Agilité et prOcessus (IRIT-MACAO), Institut de recherche en informatique de Toulouse (IRIT), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1), and Université Fédérale Toulouse Midi-Pyrénées

Subjects
[INFO.INFO-AR]Computer Science [cs]/Hardware Architecture [cs.AR], Safety requirement, Semantics (computer science), Computer science, Component-based design, [INFO.INFO-SE]Computer Science [cs]/Software Engineering [cs.SE], 02 engineering and technology, Tracing, computer.software_genre, Interface homme-machine, [INFO.INFO-CR]Computer Science [cs]/Cryptography and Security [cs.CR], Compositional verification, Unified Modeling Language, Architectures Matérielles, Systems Modeling Language, Component (UML), 0202 electrical engineering, electronic engineering, information engineering, Génie logiciel, [INFO.INFO-HC]Computer Science [cs]/Human-Computer Interaction [cs.HC], computer.programming_language, Syntax (programming languages), Programming language, business.industry, Timed input/output automata, 020207 software engineering, Modélisation et simulation, [INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation, Systèmes embarqués, Contract-based reasoning, System requirements, Modeling and Simulation, UML/SysML, Component-based software engineering, Cryptographie et sécurité, [INFO.INFO-ES]Computer Science [cs]/Embedded Systems, 020201 artificial intelligence & image processing, Software engineering, business, computer, Software
Abstract

International audience; In order to cope with the growing complexity of critical real-time embedded systems, systems engineering has adopted a component-based design technique driven by requirements. Yet, such an approach raises several issues since it does not explicitly prescribe how system requirements can be decomposed on components nor how components contribute to the satisfaction of requirements. The envisioned solution is to design, with respect to each requirement and for each involved component, an abstract specification, tractable at each design step, that models how the component is concerned by the satisfaction of the requirement and that can be further refined toward a correct implementation. In this paper, we consider such specifications in the form of contracts. A contract for a component consists in a pair (assumption, guarantee) where the assumption models an abstract behavior of the component’s environment and the guarantee models an abstract behavior of the component given that the environment behaves according to the assumption. Therefore, contracts are a valuable asset for the correct design of systems, but also for mapping and tracing requirements to components, for tracing the evolution of requirements during design and, most importantly, for compositional verification of requirements. The aim of this paper is to introduce contract-based reasoning for the design of critical real-time systems made of reactive components modeled with UML and/or SysML. We propose an extension of UML and SysML languages with a syntax and semantics for contracts and the refinement relations that they must satisfy. The semantics of components and contracts is formalized by a variant of timed input/output automata on top of which we build a formal contract-based theory. We prove that the contract-based theory is sound and can be applied for a relatively large class of SysML system models. Finally, we show on a case study extracted from the automated transfer vehicle (http://www.esa.int/ATV) that our contract-based theory allows to verify requirement satisfaction for previously intractable models.

Published
2015

4. Spoiled patterns: how to extend the GoF

Author

Christian Percebois, Hervé Leblanc, Cédric Bouhours, Laboratoire d'Informatique, de Modélisation et d'optimisation des Systèmes (LIMOS), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Université d'Auvergne - Clermont-Ferrand I (UdA)-SIGMA Clermont (SIGMA Clermont)-Ecole Nationale Supérieure des Mines de St Etienne (ENSM ST-ETIENNE)-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en informatique de Toulouse (IRIT), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Toulouse Mind & Brain Institut (TMBI), Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT), Centre National de la Recherche Scientifique - CNRS (FRANCE), Ecole Nationale Supérieure des Mines de Saint-Etienne - ENSMSE (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université Toulouse - Jean Jaurès - UT2J (FRANCE), Université Toulouse 1 Capitole - UT1 (FRANCE), Université Blaise Pascal - UBP (FRANCE), Université d'Auvergne - UDA (FRANCE), Laboratoire d'Informatique, de Modélisation et d'Optimisation des Systèmes (LIMOS), Ecole Nationale Supérieure des Mines de St Etienne (ENSM ST-ETIENNE)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Modèles, Architectures, Composants, Agilité et prOcessus (IRIT-MACAO), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), Ecole Nationale Supérieure des Mines de St Etienne-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1), and Université Fédérale Toulouse Midi-Pyrénées

Subjects
[INFO.INFO-AR]Computer Science [cs]/Hardware Architecture [cs.AR], Best practices, Anti-patterns, Process (engineering), Computer science, [INFO.INFO-SE]Computer Science [cs]/Software Engineering [cs.SE], 02 engineering and technology, computer.software_genre, Interface homme-machine, Spoiled patterns, Field (computer science), [INFO.INFO-CR]Computer Science [cs]/Cryptography and Security [cs.CR], Architectures Matérielles, 0202 electrical engineering, electronic engineering, information engineering, Génie logiciel, [INFO.INFO-HC]Computer Science [cs]/Human-Computer Interaction [cs.HC], Safety, Risk, Reliability and Quality, ComputingMilieux_MISCELLANEOUS, Reusability, Structure (mathematical logic), business.industry, Design pattern, 020207 software engineering, Design patterns, Modélisation et simulation, Object (computer science), Systèmes embarqués, [INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation, Bad smells, Code refactoring, Software design pattern, Cryptographie et sécurité, Pattern teaching, [INFO.INFO-ES]Computer Science [cs]/Embedded Systems, 020201 artificial intelligence & image processing, Artificial intelligence, business, Software engineering, computer, Software
Abstract

International audience; Design patterns were popularized by the GoF catalog in 1995. This catalog contains 23 design patterns which concern 23 design problems. Each pattern is detailed with its structure, its intent, and some information including applicability conditions and some possible variations which enable it to be re-used. In 1995, they were the cutting edge thought processes. We consider that design patterns have two major features. First, they are the result of emergent conceptions validated by a community through a well-defined acceptance process. They are a field of expert knowledge. Secondly, they must be as abstract as needed to be able to maximize their reusability. They constitute a compilation of best practices concerning object codes and designs. We propose to extend the GoF with a new concept that we have named “spoiled patterns”. They are midway between bad smells in design necessary to go ahead with a refactoring and a necessary learned lesson in order to explain anti-patterns. Each design pattern corresponds to some spoiled patterns. In this paper, we present how we have compiled the first spoiled patterns catalog, by carrying out several experiments with a lot of young inexperienced designers.

Published
2014

5. Multi-threaded code generation from Signal program to OpenMP

Author

Kai Hu, Zhibin Yang, Teng Zhang, State key Laboratory of Software Development Environment [Beijing], Beihang University (BUAA), Assistance à la Certification d’Applications DIstribuées et Embarquées (IRIT-ACADIE), Institut de recherche en informatique de Toulouse (IRIT), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université Toulouse - Jean Jaurès - UT2J (FRANCE), Université Toulouse 1 Capitole - UT1 (FRANCE), Beihang University (CHINA), and Institut de Recherche en Informatique de Toulouse - IRIT (Toulouse, France)

Subjects
[INFO.INFO-AR]Computer Science [cs]/Hardware Architecture [cs.AR], Source code, General Computer Science, Dead code, Computer science, Concurrency, media_common.quotation_subject, [INFO.INFO-SE]Computer Science [cs]/Software Engineering [cs.SE], 02 engineering and technology, Parallel computing, computer.software_genre, Interface homme-machine, Theoretical Computer Science, [INFO.INFO-CR]Computer Science [cs]/Cryptography and Security [cs.CR], Architectures Matérielles, 0202 electrical engineering, electronic engineering, information engineering, Génie logiciel, Code generation, [INFO.INFO-HC]Computer Science [cs]/Human-Computer Interaction [cs.HC], Redundant code, media_common, Signal, Programming language, SIGNAL (programming language), OpenMP, 020207 software engineering, Modélisation et simulation, Systèmes embarqués, [INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation, Synchronous language, Cryptographie et sécurité, [INFO.INFO-ES]Computer Science [cs]/Embedded Systems, 020201 artificial intelligence & image processing, Unreachable code, Compiler, computer, Multi-thread
Abstract

International audience; The use of multi-core processors will become a trend in safety critical systems. For safe execution of multithreaded code, automatic code generation from formal specification is a desirable method. Signal, a synchronous language dedicated for the functional description of safety critical systems, provides soundness semantics for deterministic concurrency. Although sequential code generation of Signal has been implemented in Polychrony compiler, deterministic multi-threaded code generation strategy is still far from mature. Moreover, existing code generation methods use certain multi-thread library, which limits the cross platform executions. OpenMP is an application program interface (API) standard for parallel programming, supported by several mainstream compilers from different platforms. This paper presents a methodology translating Signal program to OpenMP-based multi-threaded C code. First, the intermediate representation of the core syntax of Signal using synchronous guarded actions is defined. Then, according to the compositional semantics of Signal equations, the Signal program is synthesized to dependency graph (DG). After parallel tasks are extracted from dependency graph, the Signal program can be finally translated into OpenMP-based C code which can be executed on multiple platforms.

Published
2013

6. A survey on addressing privacy together with quality of context for context management in the Internet of Things

Author

Romain Laborde, Thierry Desprats, Arnaud Oglaza, Samer Machara Marquez, Pierrick Marie, Sophie Chabridon, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut Mines-Télécom (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université Toulouse - Jean Jaurès - UT2J (FRANCE), Université Toulouse 1 Capitole - UT1 (FRANCE), Algorithmes, Composants, Modèles Et Services pour l'informatique répartie (ACMES-SAMOVAR), Services répartis, Architectures, MOdélisation, Validation, Administration des Réseaux (SAMOVAR), Institut Mines-Télécom [Paris] (IMT)-Télécom SudParis (TSP)-Institut Mines-Télécom [Paris] (IMT)-Télécom SudParis (TSP), Département Informatique (INF), Institut Mines-Télécom [Paris] (IMT)-Télécom SudParis (TSP), Service IntEgration and netwoRk Administration (IRIT-SIERA), Institut de recherche en informatique de Toulouse (IRIT), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, and ANR-11-INFR-0009,INCOME,INfrastructure logicielle de gestion de COntexte Multi-Echelle pour l'Internet des objets(2011)

Subjects
[INFO.INFO-AR]Computer Science [cs]/Hardware Architecture [cs.AR], Internet of things, Information privacy, Engineering, media_common.quotation_subject, Internet privacy, Système d'exploitation, Réseaux et télécommunications, Context (language use), Computer security, computer.software_genre, Bridge (nautical), [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI], Architectures Matérielles, Situated, Quality (business), Electrical and Electronic Engineering, Context management, media_common, business.industry, Privacy software, Quality of context, Systèmes embarqués, Privacy, [INFO.INFO-ES]Computer Science [cs]/Embedded Systems, [INFO.INFO-OS]Computer Science [cs]/Operating Systems [cs.OS], Internet of Things, business, computer
Abstract

International audience; Making the Internet of Things (IoT) a reality will contribute to extend the context-aware ability of numerous sensitive applications. We can foresee that the context of users will include not only their own spatio-temporal conditions but also those of the things situated in their ambient environment and at the same time, thanks to the IoT, those that are located in other remote spaces. Consequently, next-generation context managers have to interact with the IoT underlying technologies and must, even more than before, address both privacy and quality of context (QoC) requirements. In this article, we show that the notions of privacy and QoC are intimately related and sometimes contradictory and survey the recent works addressing them. Current solutions usually consider only one notion, and very few of them started to bridge privacy and QoC. We identify some of the remaining challenges that next-generation context managers have to deal with to favour users' acceptability by providing both the optimal QoC level and the appropriate privacy protection.

Published
2013

7. Interaction with In-Vehicle Electronic Systems: A Complete Description of a Neural Network Approach

Author

Franck Poirier, Jean-François Kamp, Philippe Doignon, Laboratoire de Recherche en Informatique et ses Applications de Vannes et Lorient (VALORIA), Université de Bretagne Sud (UBS), Renault recherche, and Poirier, Franck

Subjects
Computer Networks and Communications, Computer science, Interface (computing), Complex system, Computational intelligence, 02 engineering and technology, Task (project management), systèmes embarqués, Artificial Intelligence, 0202 electrical engineering, electronic engineering, information engineering, [INFO.INFO-HC]Computer Science [cs]/Human-Computer Interaction [cs.HC], ComputingMilieux_MISCELLANEOUS, Artificial neural network, business.industry, réseaux de neurones, General Neuroscience, Driving simulator, 020206 networking & telecommunications, Touchpad, interfaction tactile, Computer engineering, 020201 artificial intelligence & image processing, Artificial intelligence, [INFO.INFO-HC] Computer Science [cs]/Human-Computer Interaction [cs.HC], business, Realization (systems), Software
Abstract

Interaction with in-vehicle systems (car phones, traffic information, route guidance, etc) becomes a very difficult task since the control devices are often reduced to small switches and push-buttons. To solve the problem, a new input interface is proposed, based on character recognition. The paper describes in detail how a simple neural network can be applied down to the level of an industrial realization to provide a reliable user-machine interface. The industrial application is that of character recognition where characters are drawn with the finger on a small touchpad. Compared with the nearest neighbour method, the neural network solution has slightly better recognition rate, is faster and requires less memory space. The design of the recognition system is given and results of an experiment made on a driving simulator are presented.

Published
2004

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