Ara es mostren els items 57-73 de 73

    • Remote DasaLAB : Datacenter as a Laboratory for Remote Learning - Short Paper 

      Guitart Fernández, Jordi; Costa Prats, Juan José (Universitat Politècnica de Catalunya, 2023-07-06)
      Altres
      Accés obert
    • Resource-level QoS metric for CPU-based guarantees in cloud providers 

      Goiri Presa, Íñigo; Julià Massó, Ferran; Fitó, Josep Oriol; Macías Lloret, Mario; Guitart Fernández, Jordi (Springer Verlag, 2010)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Success of Cloud computing requires that both customers and providers can be confident that signed Service Level Agreements (SLA) are supporting their respective business activities to their best extent. Currently used ...
    • Risk-driven proactive fault-tolerant operation of IaaS providers 

      Guitart Fernández, Jordi; Macías Lloret, Mario; Djemame, Karim; Kirkham, Thomas; Jiang, Ming; Armstrong, Django (IEEE Computer Society Publications, 2013)
      Comunicació de congrés
      Accés obert
      In order to improve service execution in Clouds, the management of Cloud Infrastructure has to take measures to adhere to Service Level Agreements and Business Level Objectives, from the application layer through to how ...
    • Rule-based SLA management for revenue maximisation in cloud computing markets 

      Macías Lloret, Mario; Fitó, Josep Oriol; Guitart Fernández, Jordi (IEEE Computer Society Publications, 2010)
      Text en actes de congrés
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      This paper introduces several Business Rules for maximising the revenue of Providers in Cloud Computing Markets. These rules apply in both negotiation and execution time, and enforce the achievement of Business-Level ...
    • Scanflow-K8s: agent-based framework for autonomic management and supervision of ML workflows in Kubernetes clusters 

      Liu, Peini; Bravo Rocca, Gusseppe; Guitart Fernández, Jordi; Dholakia, Ajay; Ellison, David; Hodak, Miroslav (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Text en actes de congrés
      Accés obert
      Machine Learning (ML) projects are currently heavily based on workflows composed of some reproducible steps and executed as containerized pipelines to build or deploy ML models efficiently because of the flexibility, ...
    • Scanflow: A multi-graph framework for machine learning workflow management, supervision, and debugging 

      Bravo Rocca, Gusseppe Jesus; Liu, Peini; Guitart Fernández, Jordi; Dholakia, Ajay; Ellison, David; Falkanger, Jeffrey; Hodak, Miroslav (2022-09-15)
      Article
      Accés restringit per política de l'editorial
      Machine Learning (ML) is more than just training models, the whole workflow must be considered. Once deployed, a ML model needs to be watched and constantly supervised and debugged to guarantee its validity and robustness ...
    • Scanflow: an end-to-end agent-based autonomic ML workflow manager for clusters 

      Liu, Peini; Bravo Rocca, Gusseppe Jesus; Guitart Fernández, Jordi; Dholakia, Ajay; Ellison, David; Hodak, Miroslav (Association for Computing Machinery (ACM), 2021)
      Comunicació de congrés
      Accés obert
      Machine Learning (ML) is more than just training models, the whole life-cycle must be considered. Once deployed, a ML model needs to be constantly managed, supervised and debugged to guarantee its availability, validity ...
    • Simulating complex systems with a low-detail model 

      Nou Castell, Ramon; Guitart Fernández, Jordi; Beltran Querol, Vicenç; Carrera Pérez, David; Montero Mercadé, Lídia; Torres Viñals, Jordi; Ayguadé Parra, Eduard (2005-09)
      Text en actes de congrés
      Accés obert
      In this paper we show how modeling and simulating a complex system such as a web-server can help to evaluate di erent metrics and proposals to improve the performance without necessity of using a real system. Many times ...
    • SLA-based resource management and allocation 

      Guitart Fernández, Jordi; Macías Lloret, Mario; Rana, Omer; Wieder, Philipp; Yahyapour, Ramin; Ziegler, Wolfgang (John Wiley & Sons, 2009-11)
      Capítol de llibre
      Accés restringit per política de l'editorial
      The aim of the chapter is to describe how service-level agreements (SLAs) could be utilized to provide the basis for resource trading based on economic models. SLAs enable a service user to identify their requirements, ...
    • SLA-driven elastic cloud hosting provider 

      Fitó, Josep Oriol; Goiri Presa, Íñigo; Guitart Fernández, Jordi (2009-02-17)
      Text en actes de congrés
      Accés obert
      It is clear that Cloud computing is and will be a sea change for the Information Technology by changing the way in which both software and hardware are designed and purchased. In this work we address the use of this ...
    • Supporting CPU-based guarantees in cloud SLAs via resource-level QoS metrics 

      Goiri Presa, Íñigo; Julià Masso, Ferran; Fitó, Josep Oriol; Macías Lloret, Mario; Guitart Fernández, Jordi (Elsevier, 2012-10)
      Article
      Accés restringit per política de l'editorial
      Success of Cloud computing requires that both customers and providers can be confident that signed Service Level Agreements (SLA) are supporting their respective business activities to their best extent. Currently used ...
    • Toward business-driven risk management for cloud computing 

      Fitó, Josep Oriol; Macías Lloret, Mario; Guitart Fernández, Jordi (IEEE Computer Society Publications, 2010)
      Text en actes de congrés
      Accés obert
      The Cloud computing paradigm is offering an innovative and promising vision concerning the Information and Communications Technology (ICT). Notwithstanding, the use of Cloud resources, which usually are external assets ...
    • Toward sustainable data centers: a comprehensive energy management strategy 

      Guitart Fernández, Jordi (2016-06-28)
      Article
      Accés obert
      Data centers are major contributors to the emission of carbon dioxide to the atmosphere, and this contribution is expected to increase in the following years. This has encouraged the development of techniques to reduce the ...
    • Towards energy-aware scheduling in data centers using machine learning 

      Berral García, Josep Lluís; Goiri Presa, Íñigo; Nou Castell, Ramon; Julià, Ferran; Guitart Fernández, Jordi; Gavaldà Mestre, Ricard; Torres Viñals, Jordi (2010-04-15)
      Text en actes de congrés
      Accés obert
      As energy-related costs have become a major economical factor for IT infrastructures and data-centers, companies and the research community are being challenged to nd better and more efficient power-aware resource ...
    • Towards high-level SLAs with heterogeneous workloads: job resource requirements prediction for deadline schedulers 

      Reig Ventura, Gemma; Alonso López, Javier; Guitart Fernández, Jordi (2009-09)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Cloud users want to express their requirements in terms of high-level metrics (e.g. in terms of execution time, not in terms of CPU MHz). Moreover, at the submission time they would like to know if the resource provider ...
    • Tuning dynamic web applications using fine-grain analysis 

      Guitart Fernández, Jordi; Carrera Pérez, David; Torres Viñals, Jordi; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2005)
      Text en actes de congrés
      Accés obert
      In this paper we present a methodology to analyze the behavior and performance of Java application servers using a performance analysis framework. This framework, considers all levels involved in the application server ...
    • Using resource-level information into nonadditive negotiation models for cloud market environments 

      Macías Lloret, Mario; Guitart Fernández, Jordi (IEEE Computer Society Publications, 2010-04-23)
      Text en actes de congrés
      Accés obert
      Markets arise as an efficient way of organising resources in Cloud Computing scenarios. In Cloud Computing Markets, Brokers that represent both Clients and Service Providers meet in a Market and negotiate for the sales of ...