WorldCat Identities

Vicat-Blanc, Pascale

Overview
Works: 19 works in 63 publications in 2 languages and 941 library holdings
Genres: Conference papers and proceedings  Handbooks and manuals 
Roles: Author, Other, Editor, Thesis advisor, Contributor, Opponent, htt
Classifications: TK5105.5, 004.6
Publication Timeline
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Most widely held works by Pascale Vicat-Blanc
Networks for grid applications : second international conference, GridNets 2008, Beijing, China, October 8-10, 2008, revised selected papers by Pascale Vicat-Blanc( )

22 editions published in 2009 in English and Undetermined and held by 485 WorldCat member libraries worldwide

Constitutes the refereed post-conference proceedings of the Second International Conference on Networks for Grid Applications, GridNets 2008, held in Beijing, China in October 2008. This title includes 19 revised full papers presented together with 4 invited presentations that were carefully reviewed and selected from 37 submissions
Computing networks : from cluster to cloud computing by Pascale Vicat-Blanc( )

13 editions published between 2010 and 2013 in English and French and held by 425 WorldCat member libraries worldwide

"Computing Networks" explores the core of the new distributed computing infrastructures we are using today: the networking systems of clusters, grids and clouds. It helps network designers and distributed-application developers and users to better understand the technologies, specificities, constraints and benefits of these different infrastructures' communication systems. Cloud Computing will give the possibility for millions of users to process data anytime, anywhere, while being eco-friendly. In order to deliver this emerging traffic in a timely, cost-efficient, energy-efficient, and reliable manner over long-distance networks, several issues such as quality of service, security, metrology, network-resource scheduling and virtualization are being investigated since 15 years. "Computing Networks" explores the core of clusters, grids and clouds networks, giving designers, application developers and users the keys to better construct and use these powerful infrastructures
Une approche de modélisation des logiciels de robots et une méthodologie de configuration = An approach of designing the robot software and a configuration methodology by Pascale Vicat-Blanc( Book )

3 editions published in 1988 in French and held by 5 WorldCat member libraries worldwide

La robotique est un domaine qui regroupe de nombreuses disciplines. Un synthèse des résultats acquis en vue d'une conception à caractère global des systèmes de robots est aujourd'hui, indispensable. Notre propos est d'étudier la partie informatique de ces systèmes. Une analyse des systèmes de programmation de robots nous permet de situer le problème du développement des logiciels. Nous montrons que les spécificités des problèmes robotiques créent des besoins particuliers. Ceci nous conduit à proposer une modélisation des logiciels de robots, logiciels évolutifs, devant correspondre au mieux aux exigences futures de la robotique. Nous définissons en particulier les caractéristiques du cœur du système de programmation qui constitue "le système d'exploitation". Nous préconisons ensuite une méthodologie de conception et de composition des modules constituant le sous-ensemble robotique du système informatique adéquat. Cette méthodologie est basée sur trois concepts fondamentaux: une agence d'action-perception ouverte. des gérants d'appareils robotiques répartis et un utilitaire de configuration interactive
Cluster and computing networks by Pascale Vicat-Blanc( Book )

2 editions published in 2011 in English and held by 3 WorldCat member libraries worldwide

Réseaux rapides et stockage distribué dans les grappes de calculateurs : propositions pour une interaction efficace by Brice Goglin( Book )

2 editions published in 2005 in French and held by 2 WorldCat member libraries worldwide

L'objectif de ce travail est d'étudier l'exploitation des réseaux haute performance des grappes dans le cadre du stockage distribué. Les applications parallèles s'exécutant sur les grappes nécessitent à la fois des communications performantes entre les différents noeuds et des accès efficaces au système de stockage. Les travaux menés sur les technologies réseau ont abouti à la conception d'architectures dédiées aux grappes qui permettent des communications très rapides entre les noeuds. Les travaux visant à obtenir un stockage distribué efficace dans les grappes se sont pour leur part principalement focalisés sur des mécanismes de parallélisation pour augmenter la charge de travail supportée par le (ou les) serveur. Nous proposons dans ce travail d'améliorer les performances du stockage distribué dans les grappes en utilisant au mieux le réseau haute performance sous-jacent pour accéder au stockage distant. La question générale que nous soulevons est~: est-ce que les réseaux rapides des grappes sont adaptés à un accès transparent, efficace et performant au stockage distant ? Nous montrons que les besoins du stockage sont très différents de ceux du calcul parallèle. Les réseaux des grappes ont été conçus pour optimiser les communications entre les différents noeuds d'une application parallèle. Nous étudions leur utilisation dans le cadre, très différent, du stockage dans les grappes, qui s'appuie généralement sur un modèle client/serveur d'accès aux fichiers distants (par exemple NFS, PVFS ou Lustre). Une étude expérimentale reposant sur l'utilisation de GM, l'interface de programmation du réseau rapide Myrinet, dans le contexte du stockage distribué révèle différents freins. Tout d'abord, l'utilisation mémoire particulière dans les couches système d'accès au stockage s'intègre difficilement dans l'habituelle gestion mémoire des réseaux rapides. Ensuite, les modèles client-serveur utilisés dans le stockage distribué présentent des besoins spécifiques pour la gestion des messages et des événements réseau, besoins non couverts par les interfaces actuelles. Nous proposons différentes solutions pour résoudre, au niveau du système de fichiers les problèmes liés au contrôle du réseau mais montrons qu'il est nécessaire de modifier l'interface de programmation réseau et le système d'explotation pour venir à bout des difficultés liées au transfert de données. Nous détaillons des propositions à mettre en oeuvre dans les interfaces de programmation du réseau pour faciliter leur utilisation dans le cadre du stockage. L'intégration dans une nouvelle interface de programmation, Myrinet/MX, d'une gestion souple des transferts de données est présentée. Les premiers résultats montrent que son utilisation dans le cadre du stockage distribué, mais aussi dans d'autres applications, se révèle aisée et efficace
Design analysis and validation of router-assisted reliable multicast protocols in wide area networks by Moufida Bouyoucef( Book )

2 editions published in 2003 in English and held by 2 WorldCat member libraries worldwide

Dans l'Internet, les communications multipoint (multicast) permettent l'échange de données entre plusieurs membres appartenant au même groupe. Le travail de cette thèse se situe au niveau transport où un certain nombre de problèmes sont abordés : la fiabilité, le contrôle de congestion et la prise en compte de l'hétérogénéité des récepteurs qui appartiennent au même groupe. La technologie des réseaux actifs a été exploitée pour permettre des solutions plus efficaces par rapport à celles qui adoptent des approches de bout en bout. La thèse contient des évaluations analytiques, des simulations ainsi que l'implémentation d'un prototype. Des expérimentations ont été menées sur un environnement de grille de calcul
Contributions to sessions aware frameworks for next generation internet services by Narjess Ayari( Book )

2 editions published in 2008 in English and held by 2 WorldCat member libraries worldwide

This thesis focuses on the contributions of edge-network processing devices in improving the perceived end-to -end QoS. Our goal is to recommend an efficient scheme for improving the percieved end-to-end QoS, either under server overload, or when legitimate processing server experiences failures. Firstly, we have described a fully client/server transparent methodology for engineering fault tolerant network services. The proposed architecture adds non additional complexity to a legitimate processing server during failsafeperiods, and enhances the robustness of internet servers across failures. At a second step, we have advocated a methodology, for efficiently improving the salability of high performance cluster-based internet servers, subjected to multiple flow-based sessions. Secondly, we have shown that , responsive session aware admission control contributes in providing improved QoS to subscribers, under overload
Réseau longue distance et application distribuée dans les grilles de calcul : étude et propositions pour une interaction efficace by Ludovic Hablot( Book )

2 editions published in 2009 in French and held by 2 WorldCat member libraries worldwide

Parallel applications allow to execute many tasks of the same application, on many processors in the same time. These applications were first executed on supercomputers, end then on clusters. Today, this last infrastructure is evolving toward grids. Grids, in this thesis, are defined as an interconnection of clusters by a long-distance network. Most of MPI applications are written with the MPI standard, which describe how processes communicate, by message passing. Initialy design for clusters, MPI is still used to program parallel applications in grids. While different problems have been resolved for communications in clusters, the long-distance network of the grid raises many problems. The main objective of this thesis is to study in detail the inteeractions between the parallel applications and the transport layer in the long-distance network of computing grids, and then to solve these problems. In this thesis, we study in detail the use of TCP by MPI applications. In order to reduce the impact of retransmissions and the impact of congestion window, we propose a communication layer between the application (MPI for example) and the transport protocol (TCP) that is autoùatically and transparently executed. The general principle is to introduce proxies at the interface between the local network and the long-distance network to differentiate communications. These proxies allows to put forward the split of TCP connections in order to avoid losses and retransmissions on the long-distance link. This mecanism also allows to keep the congestion window closer to available throughput on the long-distance network
Dealing with Elephants in the Internet : Towards a Flow-Based Internet Architecture by Dinil Mon Divakaran( Book )

2 editions published in 2010 in English and held by 2 WorldCat member libraries worldwide

Si l'on en croit les tendances actuelles de la croissance du trafic Internet, la demande en bande passante dépassera la capacité du système dans quelques années. Cela pose un certain nombre de problèmes, parmi lesquels la possibilité d'apporter de la qualité de service (QdS) au trafic utilisateur, la méthode traditionnelle de sur-approvisionnement n'étant plus envisageable. Dans ce contexte, l'approche flow-aware networking (FAN), proposée comme alternative aux architectures habituelles IntServ et DiffServ, emploie une différentiation de service implicite en utilisant des mécanismes tels que le contrôle d'admission, l'ordonnancement, le routage, etc., au niveau des flux, un flux étant un ensemble de paquets possédant le même groupe d'identifiants et localisés dans le temps.Par définition, l'approche flow-aware networking est bloquante en ce qui concerne les flux. La politique de contrôle d'admission rejette les nouveaux flux selon les conditions du réseau. On définit un réseau basé flux (flow-based networking) comme une version généralisée de l'approche FAN, non restreinte à un des mécanismes de QdS y étant défini, et surtout sans blocage de flux. Le but est d'être flexible en combinant différents mécanismes basés sur les flux, proposés indépendamment, pour l'ordonnancement, la gestion des tampons, le contrôle de la congestion, le routage, la comptabilité, l'échantillonage, etc. Dans un tel réseau, la performance peut être basée sur des métriques du niveau des flux. Cela correspond aux priorités des utilisateurs finaux pour qui le délai des petits flux, le débit des gros flux, le taux instantané de trafic en continu, etc., sont souvent plus importants que les métriques de QdS à l'échelle du paquet
High-speed networks and services for data-intensive grids : the DataTag project( Book )

1 edition published in 2005 in English and held by 2 WorldCat member libraries worldwide

Contributions to the Analysis of scaling Laws and Quality of Service in Networks : Experimental and Theoretical Aspects by Patrick Loiseau( Book )

2 editions published in 2009 in English and held by 2 WorldCat member libraries worldwide

In today's context of rapid expansion of the Internet, deep understanding of the statistical properties of network traffic is essential for Internet Service Providers to offer users the best Quality of Service possible. A major breakthrough in that direction was the discovery in 1993 of the self-similarity of network traffic, followed up by the ON/OFF model proposed in 1997 that posits the heavy-tailness of flow-size distributions as a plausible origin of this property. While of great interest, such mathematical models always rely on necessary simplifying assumptions which can limit their practical applicability to real networks, in particular due to the complexity of the TCP protocol. In this thesis, we use a hybrid approach based on the combination of real traffic traces, controlled experiments and theoretical developments to address some open questions concerning network traffic properties and their impact on QoS. Our experiments are based on a large-scale controllable testbed and an efficient traffic capture system. Then, we first address issues related to aggregate network traffic: we extend previous long-range dependent models and we propose an estimator of the flow-size distribution's tail index under sampling. We also perform an empirical study of the impact of long-range dependence and heavy-tails on QoS. Finally, we turn to the packet-level traffic of one TCP source and show, using a large-deviation principle, that it can be finely characterized by a multifractal structure intimately related to the control mechanism AIMD, and naturally reproduced by Markov models
Architecture de sécurité décentralisée basée sur l'identification cryptographique by Julien Laganier( Book )

2 editions published in 2005 in French and held by 2 WorldCat member libraries worldwide

L'objectif de ce travail de thèse est d'étudier le problème de la sécurisation des infrastructures distribuées de communication, d'exécution ou de stockage, dynamiques et à très large échelle. La majorité des solutions de sécurité reposent sur l'existence d'infrastructures de clefs publiques globales, dont le déploiement soulève de nombreux problèmes, tant techniques qu'administratifs et politiques. Afin d'échapper à cette contrainte, nous proposons une approche de sécurité décentralisée basée sur l'identification cryptographique (CBID, CGA, HBA et HIP) et la délégation (certificats SPKI). Nous montrons qu'une telle approche de sécurité est plus adaptée à la nature intrinsèquement décentralisée de systèmes de grandes tailles, ouverts et partagés, tels que l'Internet ou les grilles de calculs. Pour valider cette approche, nous l'avons instanciée en nous appuyant sur les protocoles de sécurité pour IP (IPsec), et d'identification des hôtes (HIP - Host Identity Protocol). Nous montrons ainsi comment sont sécurisés différents protocoles réseaux. En particulier, des solutions de sécurité pour la couche réseau IPv6 (Internet Protocol version 6) et pour sa composante de découverte du voisinage ND (Neighbor Discovery), ainsi que pour virtualiser l'infrastructure d'exécution, de communication et de stockage des grilles de calcul (Supernet, HIPernet, Internet Backplane Protocol) sont présentées et analysées
EWAN : grid simulator by Magí Sanchón Soler( )

1 edition published in 2006 in English and held by 1 WorldCat member library worldwide

Infrastructures virtuelles dynamiquement approvisionnées : spécification, allocation et exécution by Guilherme Piêgas Koslovski( )

1 edition published in 2011 in English and held by 1 WorldCat member library worldwide

Virtual Infrastructures (VIs) have emerged as result of the combined on-demand provisioning of IT resources and dynamic virtual networks. By combining IT and network virtualization, the VI concept is turning the Internet into a worldwide reservoir of interconnected resources, where computational, storage, and communication services are available on-demand for different users and applications. The innovation introduced by VIs posed a set of challenges requiring the development of new models, technologies, and procedures to assist the migration of existing applications from traditional infrastructures to VIs. The complete abstraction of physical resources, coupled with the indeterminism of required computing and communication resources to execute applications, turned the specification and composition of a VI into a challenging task. In addition, mapping a set of VIs onto a distributed substrate is an NP-hard problem. Besides considering common objectives of infrastructure providers (e.g., efficient usage of the physical substrate, cost minimization, increasing revenue), an allocation algorithm should consider the users' expectations (e.g., allocation quality, data location and mobility). This thesis contributes to related research initiatives by proposing the following: i) Virtual Infrastructure Description Language (VXDL), a descriptive and declarative language that allows users and systems to model the components of a VI; ii) a mechanism for composing VI specifications to execute distributed applications; iii) an approach to reduce the search space in an automatic way, accelerating the process of VI allocation; and iv) mechanism for provisioning reliable VIs
PFLDnet 2005 - Protocols for fast long-distance network : proceedings by 2005 ; Lyon PFLDnet / International workshop on protocols for fast long-distance network 3 ; February 3 - 4( Book )

1 edition published in 2005 in English and held by 1 WorldCat member library worldwide

Virtualisation des réseaux : performance, partage et applications by Fabienne Anhalt( )

1 edition published in 2011 in English and held by 1 WorldCat member library worldwide

Virtualization appears as a key solution to revolutionize the architecture of ossified networks, such as the Internet. By adding a layer of abstraction on top of the actual hardware, virtual networks can be managed and configured flexibly and independently. The flexibility introduced into the network provides the operator with options for topology reconfiguration, besides allowing it to play with the software stacks and protocols. Today, network virtualization has been realized in research testbeds, allowing researchers to experiment with routing. Introducing virtualization in a production network such as those of the Internet raises several challenges, in particular the performance and the sharing of the routing and switching resources. These are in particular relevant, when the network data plane is virtualized, for maximum isolation and configurability in virtual networks. Therefore, we first evaluate and analyze the impact of virtualization on the performance of virtual software routers. Then, for being able to virtualize the data plane in production networks, we propose a hardware architecture of a virtualized switch, enabling the differentiated sharing of resources such as the ports and the memory buffers. Moreover, we examine the possible applications of virtual networks and propose a service for virtual networks on demand with configurable routing and controlled bandwidth. We apply and evaluate this service in the context of virtual infrastructures
Proceedings of the first international conference on Networks for grid applications by Pascale Vicat-Blanc Primet( )

2 editions published in 2007 in English and held by 1 WorldCat member library worldwide

GridNets '07 : proceedings of the First International Conference on Networks for Grid Applications by GridNets (Conference)( )

1 edition published in 2007 in English and held by 1 WorldCat member library worldwide

QoS coopérative pour l'adaptabilité des protocoles de transport dans le contexte des activités de groupe by François Armando( )

1 edition published in 2010 in French and held by 1 WorldCat member library worldwide

The results presented in this thesis deal with the general area of QoS oriented self-adaptive communication systems. The proposed contribution deals with dynamic adaptation of configurable (TCP-like) Transport protocols. The goal is to tackle the quality of service (QoS) requirements of multimedia applications distributed in cooperative group activities such as the ones involved in emergency operations. The first part of the thesis has been performed within the European IST project NETQoS. A conceptual architecture is proposed for managing adaptation at the Transport level. Following a policy-based approach, the exposed contributions particularly deal with design, implementation and test of the central component of the architecture, aimed at elaborating, adapting and making them enforced the operational policy having to be deployed on the managed Transport-level entities. The second part of the thesis deals with the decision problem. An original approach is proposed to manage Transport level protocols in a collaborative way within group cooperative activities. The proposed approach is aimed at privileging the most priority Transport connections at the expense of the less priority ones. The bandwidth distribution between the connections is considered in the proposed study. The problem is formulated as a linear programming problem which is resolved using the Simplex method. Two criteria are elaborated and discussed. Finally, performance assessments performed in ns-2 simulation allow showing the benefits and limitations of the proposed solutions
 
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Networks for grid applications : second international conference, GridNets 2008, Beijing, China, October 8-10, 2008, revised selected papers
Covers
Computing networks : from cluster to cloud computingCluster and computing networks
Alternative Names
Pascale Vicat-Blanc entrepreneuse et ingénieure française spécialiste du Cloud computing

Pascale Vicat-Blanc französische Ingenieurin und Spezialistin für Cloud Computing

Pascale Vicat-Blanc French scientist specializing in cloud computing

Primet, Pascale 1961-

Primet, Pascale Vicat-Blanc

Primet, Pascale Vicat-Blanc 1961-

Vicat-Blanc, Pascale

Vicat-Blanc, Pascale 1961-

Vicat-Blanc Primet, Pascale

Languages
English (51)

French (11)