Letteratura scientifica selezionata sul tema "Évaluation des logiciels – Consommation d'énergie"
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Articoli di riviste sul tema "Évaluation des logiciels – Consommation d'énergie":
Cantin, Richard, e Cédric Bereaud. "Differentes sources d’erreurs dans le diagnostic de performance énergétique pour les bâtiments". Acta Europeana Systemica 8 (10 luglio 2020): 231–40. http://dx.doi.org/10.14428/aes.v8i1.56393.
Hamza, Mohamed Hafedh, Ayed Added, Alain Francès, Ramiro Rodriguez, Mohamed Ajmi e Saâdi Abdeljaoued. "Évaluation de la vulnérabilité à la pollution potentielle de la nappe côtière alluvionnaire de Meltine-Ras Jebel-Raf Raf (Nord-Est tunisien) selon les méthodes paramétriques DRASTIC, SINTACS et SI". Revue des sciences de l'eau 21, n. 1 (29 aprile 2008): 75–86. http://dx.doi.org/10.7202/017932ar.
COULON, JB, P. LECOMTE, M. BOVAL e J. M. PEREZ. "Introduction générale". INRAE Productions Animales 24, n. 1 (3 marzo 2011): 5–8. http://dx.doi.org/10.20870/productions-animales.2011.24.1.3232.
Tesi sul tema "Évaluation des logiciels – Consommation d'énergie":
Guégain, Edouard. "Optimisation de logiciels par leur configuration". Electronic Thesis or Diss., Université de Lille (2022-....), 2023. http://www.theses.fr/2023ULILB020.
The field of software engineering evolves rapidly, exposing practitioners to an ever-increasing collection of tools, languages, frameworks, and paradigms.Each of these components can have its own, internal configuration.Thus, designing a new software system consist in selecting components from this collection, which is akin to creating a configuration.The criterion to configure such systems is too often the ease of development, which leads to oversized, power-hungry bloatware.This paradigm is not aligned with frugal or environmental concerns.Thus, this dissertation looks into the ability to leverage the configuration of a system to optimize its performance.A specific focus is made on energy consumption and the size of software systems.A prerequisite to optimizing a system is to understand its current performance.To gain insight into this subject, the configuration software JHipster was empirically analyzed.Exhaustively assessing the performances of configurations of JHipster, wrt several indicators, showed that different configurations have indeed different performances.Thus, relying on performance insight, it is possible to create high-performance configurations of JHipster.Furthermore, some performance indicators proved correlated across configurations.Therefore, the optimization goal can be simplified by ignoring redundant performance indicators.The process of creating optimized configurations of JHipster was performed manually, which is only possible in smaller configuration spaces.To tackle larger configuration spaces, an algorithm was created, defining how to assess the performance of each option, and then how to improve a given configuration using such performance data.However, optimizing a configuration by selecting high-performance options brought out limitations, as options can interact with each other:in some situations, pairing high-performance options may result in subpar performances.Similarly, low-performance options can prove unexpectedly efficient when paired together.Thus, the optimization algorithm has been designed to leverage such specific behaviors.Applying this algorithm to a large set of configurations showed that most of them can reach near-optimal performances, with only a limited set of modifications.However, performance constraints are not limited to a single performance indicator.Depending on the context, the energy consumption of a system may not be the single most impactful indicator to optimize.Thus, the optimization algorithm must be generalized to support several performance indicators.This generalized algorithm has been validated on a pair of performance indicators: the execution time and the size of the software.The main highlight of this validation is that half of all configurations can reach a local optimum by changing a single setting.Furthermore, by exhaustively applying the algorithm to the configuration space of a system, it was possible to follow how it navigates the configuration space to find optimal configurations.Analyzing this navigation highlighted current limitations in the algorithm, which can thus be further improved as future work.In its current state, the algorithm was published as an open-source tool under the name ICO
Wang, Yewan. "Évaluation et modélisation de l’impact énergétique des centres de donnée en fonction de l’architecture matérielle/ logicielle et de l’environnement associé". Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2020. http://www.theses.fr/2020IMTA0175.
For years, the energy consumption of the data center has dramatically increased followed by the explosion of demand in cloud computing. This thesis addresses the scientific challenge of energy modeling of a data center, based on the most important variables. With such modeling, an data center operator will be able to better reallocate / design the current / future data centers. In order to identify the energy impacts of hardware and software used in computer systems. In the first part of the thesis, to identify and characterize the uncertainties of energy consumption introduced by external elements: thermal effects, difference between identical processors caused by imperfect manufacturing process, precision problems resulting from power measurement tool, etc. We have completed this scientific study by developing a global power modeling for a given physical cluster, this cluster is composed by 48 identical servers and equipped with a direct expansion cooling system, conventionally used today for modern data centers. The modeling makes it possible to estimate the overall energy consumption of the cluster based on operational configurations and data relating to IT activity, such as ambient temperature, cooling system configurations and server load
Lambert, Charlène. "Simulation et optimisation énergétique de procédés agroalimentaires dans un logiciel de génie chimique. Modélisation du séchage convectif d'aliments solides et application à une sucrerie de betteraves". Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLA004.
To face recent European regulations, the food industry has a critical need for IT tools to simulate their entire factory to reconcile industrial data and optimize energy consumption. Such software exist in the field of chemical engineering. They are limited to mixtures of gases and liquids whose thermo-physical properties can be correctly predicted by thermodynamic models. To date, no commercial software is able to simulate most food unit operations and calculate the required thermophysical properties of foods, especially solid foods. A first part of this Ph.D. is dedicated to the development of a model of hot air drying of solid food. This model is being added to the ProSimPlus® unit operation module database. It has been validated in the laboratory scale for the drying of 4 products of different compositions and geometries. Its simulation time is significantly higher than the one of the other modules of ProSimPlus®. To overcome this issue, an innovative method of drying model reduction has been developed. To facilitate the characterization work of a new product, a new and rapid method for identifying the apparent diffusivity of water by a reverse approach was also developed. A second part of this PhD focuses on the simulation and energy optimization of a sugar beet factory, in collaboration with V.E.R.I. All the unit operations of the factory were modeled with ProSimPlus® using only modules of -food non-specific- unit operations. Data reconciliation has been performed and deviation between simulated and industrial data were below 1 %. Energy optimization of the sugar factory was performed by combining thermal and exergy analyses. In this study, technical solutions were proposed to significantly reduce the total irreversibility, the cold utility requirement and the mass flow-rate of high pressure steam supplying the factory
Pokam, Gilles. "Techniques de compilation pour la gestion et l'optimisation de la consommation d'énergie des architectures VLIW". Rennes 1, 2004. http://www.theses.fr/2004REN10045.
Ordas, Sébastien. "Évaluation de méthodes faible consommation contre les attaques matérielles". Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS023/document.
The consumption of integrated circuits has been increasing over the last decade. With the increase of energy prices and the democratization of embedded systems, methods to manage the consumption performance compromise, such as the dynamic management of the frequency and the supply voltage or the substrate potential, were developed. These methods, which are becoming more commonly implemented in integrated systems, allow to reduce the consumption of those latter, and to better manage the tradeoff between consumption and performance.Some of these circuits, embedding these methods, may have to perform some operations with confidential information. It is therefore necessary to consider the possible impact of these methods on the safety of the integrated systems. In this context, the work reported in this thesis aimed to analyze the compatibility of these methods of power management with the design of robust circuits to physical attacks.Specifically, the objective was to determine whether these low-power techniques constitute real obstacles or facilitate the attacks by observation or perturbation exploiting the electromagnetic channel. Initially, a study on the effectiveness of attacks by observation in the presence of random management of voltage, frequency and substrate polarization was done. Secondly, the impact of the dynamic management of supply voltages and substrate polarization on the ability to inject faults by electromagnetic medium was studied. This document presents the overall results of these analyzes. Keyword : Hardware Attacks, Side Channel Attacks, Faults Attacks, Electromagnetic canal, DVFS, Body-biasing
Hamzaoui, Khalil Ibrahim. "Contribution à la modélisation de la consommation d'énergie dans un dispositif mobile". Thesis, Lille 1, 2018. http://www.theses.fr/2018LIL1I030/document.
The main goal of this thesis is to model the power consumption of a particular application running on a mobile device. We propose a model of energy behavior monitoring, we also describe a methodology to identify the parameters of the model. To this end, we analyzed a collection of experimental data collected during my tour de France in an electric wheelchair. We applied statistical tools to obtain the parameters of the model. Finally, we validate the model by comparing the results with other experimental data.The first case study compares the evolution of the energy cost in the mobile environments of the different components of smartphones based on several energy models.- The second case study deals with the evaluation, the measurements of the energy cost consumed and the problems encountered in the methods used for the evaluation of energy consumption. For a better evaluation, the case study of energy behavior was introduced using the virtual machines.- The third case study is based on the treatment of the results of the measurements obtained during my tour of France in a connected electric wheelchair. The goal is to anticipate resource management, realizing measurements, and then tracking energy behavior in a real and diverse environment. The model can be used to define an optimal frequency in terms of energy consumption for specific situations without degrading the quality of service desired by the user
Cherifi, Nadir. "Assistance au développement de logiciels embarqués contraints en énergie". Thesis, Lille 1, 2018. http://www.theses.fr/2018LIL1I036/document.
The designation under the term Internet of Things brings together a vast array of different connected systems.A significant number of these objects do not have a continuous power supply and are therefore supplied with batteries. In addition, we can list multiple use cases where the recharging of the battery is difficult or impossible (e.g. a buried object for structures monitoring). As a result, the energetic aspect represents a primary constraint to be taken into account by the developers when designing the embedded application on the object. The work issue consists in placing energy as a hard resource during the development phase by providing assistance and help to the developers in the management of this complex resource. We propose as a solution a methodology and tools to support the activities of the embedded developer in a constrained energy environment. We assert that the ability to accurately measure and track the energy consumption of a connected object and then correlate it to the underlying software can improve overall energy efficiency by implementing best practices related to use of the different hardware components. To achieve this goal, we base our work on a hardware energy measurement method able of providing accurate consumption figures. We than build an energy profiling and cartography framework of embedded software to help the developer understand the energy behavior of his application
Ben, Atitallah Rabie. "Modèles et simulation des systèmes sur puce multiprocesseurs : estimation des performances et de la consommation d'énergie". Thesis, Lille 1, 2008. http://www.theses.fr/2008LIL10019.
Multiprocessor system on chip (MPSoC) simulation in the first design steps has an important impact in reducing the time to market of the final product. However, MPSoC have become more and more complex and heterogeneous. Consequently, traditional approaches for system simulation at lower levels cannot adequately Support the complexity needed for the design of future MPSoc. Ln this thesis, we propose a framework composed of several simulation levels. This enables early performance evaluation in the design flow. The proposed framework is useful for design space exploration and permits to find rapidly the most adequate Architecture/Application configuration. Ln the first part ofthis thesis, we present an efficient simulation tool composed of three levels that offer several performance/energy tradeoffs. The three levels are differentiated by the accuracy of architectural descriptions based on the SystemC- TLM standard. Ln the second part, we are interested by the MPSoC energy consumption. For this, we enhanced Our simulation framework with flexible and accurate energy consumption models. FinaIly in the third part, a compilation chain based on a Model Driven Engineering (MDE) approach is developed and integrated in the Gaspard environment. This chain allows automatic SystemC code generation from high level MPSoC modeling
Djeema, Ahcene. "Modélisation Bottom-Up, un outil d’aide à la décision long terme pour les mesures politiques en matière d’énergie et d’environnement : le modèle TIMES appliqué aux industries grandes consommatrices d’énergie". Paris, ENMP, 2009. http://pastel.paristech.org/5303/01/Thèse_ADjemaa.pdf.
Among the energy users in France and Europe, some industrial sectors are very important and should have a key role when assessing the final energy demand patterns in the future. The aim of our work is to apply a prospective model for the long range analysis of energy/technology choices in the industrial sector, focussing on the energy-intensive sectors. The modelling tool applied in this study is the TIMES model (family of best known MARKAL model). It is an economic linear programming model generator for local, national or multi regional energy systems, which provides a technology-rich basis for estimating energy dynamics over a long term, multi period time. We illustrate our work with nine energy-intensive industrial sectors: paper, steel, glass, cement, lime, tiles, brick, ceramics and plaster. It includes a detailed description of the processes involved in the production of industrial products, providing typical energy uses in each process step. In our analysis, we identified for each industry, several commercially available state-of-the-art technologies, characterized and chosen by the Model on the basis of cost effectiveness. Furthermore, we calculated potential energy savings, carbon dioxide emissions' reduction and we estimated the energy impact of a technological rupture. This work indicates that there still exists a significant potential for energy savings and carbon dioxide emissions' reduction in all industries
Trigui, Rochdi. "Motorisation asynchrone pour véhicules électriques : modélisation, optimisation et évaluation". Vandoeuvre-les-Nancy, INPL, 1997. http://www.theses.fr/1997INPL064N.
Libri sul tema "Évaluation des logiciels – Consommation d'énergie":
Naturelles, Canada Ressource, a cura di. Analyse comparative de la consommation d'énergie des mines à ciel ouvert du Canada. Ottawa, Ont: Ressources naturelles Canada, 2005.
H, Hooke James, Landry Byron, Hart David e Canada. Office de l'efficacité énergétique., a cura di. Systèmes d'information sur la gestion de l'énergie: Pour une meilleure efficacité énergétique : guide à l'usage des gestionnaires, des ingénieurs et du personnel opérationnel. [Ottawa, Ont: Publié par l'Office de l'efficacité énergétique de Ressources naturelles Canada], 2004.
Ontario. Esquisse de cours 12e année: Sciences de l'activité physique pse4u cours préuniversitaire. Vanier, Ont: CFORP, 2002.
Ontario. Esquisse de cours 12e année: Technologie de l'information en affaires btx4e cours préemploi. Vanier, Ont: CFORP, 2002.
Ontario. Esquisse de cours 12e année: Études informatiques ics4m cours préuniversitaire. Vanier, Ont: CFORP, 2002.
Ontario. Esquisse de cours 12e année: Mathématiques de la technologie au collège mct4c cours précollégial. Vanier, Ont: CFORP, 2002.
Ontario. Esquisse de cours 12e année: Sciences snc4m cours préuniversitaire. Vanier, Ont: CFORP, 2002.
Ontario. Esquisse de cours 12e année: English eae4e cours préemploi. Vanier, Ont: CFORP, 2002.
Ontario. Esquisse de cours 12e année: Le Canada et le monde: une analyse géographique cgw4u cours préuniversitaire. Vanier, Ont: CFORP, 2002.
Ontario. Esquisse de cours 12e année: Environnement et gestion des ressources cgr4e cours préemploi. Vanier, Ont: CFORP, 2002.