Now showing items 170-189 of 358

    Improving resource efficiency in virtualized datacenters 

    Amaral, Marcelo (Date of defense: 2019-04-29)

    In recent years there has been an extraordinary growth of the Internet of Things (IoT) and its protocols. The increasing diffusion of electronic devices with identification, computing and communication capabilities is ...

    Improving the effective use of multithreaded architectures : implications on compilation, thread assignment, and timing analysis 

    Radojković, Petar (Date of defense: 2013-07-19)

    This thesis presents cross-domain approaches that improve the effective use of multithreaded architectures. The contributions of the thesis can be classified in three groups. First, we propose several methods for thread ...

    Improving the efficiency of multicore systems through software and hardware cooperation 

    Jiménez Pérez, Víctor Javier (Date of defense: 2016-10-20)

    Increasing processors' clock frequency has traditionally been one of the largest drivers of performance improvements for computing systems. In the first half of the 2000s, however, it became clear that continuing to increase ...

    Improving the performance and energy-efficiency of virtual memory 

    Karakostas, Vasileios (Date of defense: 2016-04-18)

    Virtual memory improves programmer productivity, enhances process security, and increases memory utilization. However, virtual memory requires an address translation from the virtual to the physical address space on every ...

    Improving time predictability of shared hardware resources in real-time multicore systems : emphasis on the space domain 

    Jalle Ibarra, Javier (Date of defense: 2016-07-18)

    Critical Real-Time Embedded Systems (CRTES) follow a verification and validation process on the timing and functional correctness. This process includes the timing analysis that provides Worst-Case Execution Time (WCET) ...

    Improving web server efficiency on commodity hardware 

    Beltrán Querol, Vicenç (Date of defense: 2008-10-03)

    El ràpid creixement de la Web requereix una gran quantitat de recursos computacionals que han de ser utilitzats eficientment. Avui en dia, els servidors basats en hardware estendard son les plataformes preferides per ...

    In-operation planning in flexgrid optical core networks 

    Gifre Renom, Lluís (Date of defense: 2016-06-03)

    New generation applications, such as cloud computing or video distribution, can run in a telecom cloud infrastructure where the datacenters (DCs) of telecom operators are integrated in their networks thus, increasing ...

    Incentives for sharing heterogeneous resources in distributed systems : a participatory approach 

    Vega D'Aurelio, Davide (Date of defense: 2015-12-21)

    Contributory and volunteer computing ecosystems built around a community of participants need, like any other common-pool resources, an adaptive governance mechanism to guarantee the sustainability of the ecosystem. ...

    Information dissemination in mobile networks 

    Trullols Cruces, Oscar (Date of defense: 2014-07-17)

    This thesis proposes some solutions to relieve, using Wi-Fi wireless networks, the data consumption of cellular networks using cooperation between nodes, studies how to make a good deployment of access points to optimize ...

    Intelligent instrumentation techniques to improve the traces information-volume ratio 

    Llort Sánchez, Germán M. (Date of defense: 2015-11-03)

    With ever more powerful machines being constantly deployed, it is crucial to manage the computational resources efficiently. This is important both from the point of view of the individual user, who expects fast results; ...

    Interconnection of IP/MPLS Networks Through ATM and Optical Backbones using PNNI Protocols 

    Sánchez López, Sergio (Date of defense: 2003-10-07)

    Las redes de transporte se mueven hacia un modelo de redes formadas por routers IP/MPLS (Internet Protocol/Multiprotocol Laebel Switching) de altas prestaciones interconectadas a través redes troncales inteligentes. ...

    Internet sharing in community networks 

    Dimogerontakis, Emmanouil (Date of defense: 2017-05-26)

    The majority of the world's population does not have any or adequate Internet access. This implies that the Internet cannot provide universal service, reaching everyone without discrimination. Global access to the Internet ...

    Job scheduling for disaggregated memory in high performance computing systems 

    Vieira Zacarias, Felippe (Date of defense: 2023-10-09)

    (English) In a typical HPC cluster system, a node is the elemental component unit of this architecture. Memory and compute resources are tightly coupled in each node and the rigid boundaries between nodes limits compute ...

    Knowledge aggregation in people recommender systems : matching skills to tasks 

    Nguyen, Jennifer (Date of defense: 2019-11-08)

    People recommender systems (PRS) are a special type of RS. They are often adopted to identify people capable of performing a task. Recommending people poses several challenges not exhibited in traditional RS. Elements such ...

    Knowledge-defined networking : a machine learning based approach for network and traffic modeling 

    Mestres Sugrañes, Albert (Date of defense: 2017-12-12)

    The research community has considered in the past the application of Machine Learning (ML) techniques to control and operate networks. A notable example is the Knowledge Plane proposed by D.Clark et al. However, such ...

    Large scale geostatistics with locally varying anisotropy 

    Peredo Andrade, Oscar Francisco (Date of defense: 2022-06-09)

    Classical geostatistical methods are based on the hypothesis of stationarity, which allows to apply repetitive sampling in different locations of the spatial domain, in order to obtain enough information to infer cumulative ...

    Learning workload behaviour models from monitored time-series for resource estimation towards data center optimization 

    Buchaca Prats, David (Date of defense: 2021-01-14)

    In recent years there has been an extraordinary growth of the demand of Cloud Computing resources executed in Data Centers. Modern Data Centers are complex systems that need management. As distributed computing systems ...

    Leveraging disaggregated accelerators and non-volatile memories to improve the efficiency of modern datacenters 

    Call Barreiro, Aaron (Date of defense: 2022-11-07)

    (English) Traditional data centers consist of computing nodes that possess all the resources physically attached. When there was the need to deal with more significant demands, the solution has been to either add more nodes ...

    Leveraging graph neural networks for optimization and traffic compression in network digital twins 

    Almasan Puscas, Felician Paul (Date of defense: 2023-07-17)

    (English) In recent years, several industry sectors have adapted the Digital Twin (DT) paradigm to improve the performance of physical systems. This paradigm consists of leveraging computational methods to build high-fidelity ...

    Leveraging performance of 3D finite difference schemes in large scientific computing simulations 

    De la Cruz, Raúl (Date of defense: 2015-11-30)

    Gone are the days when engineers and scientists conducted most of their experiments empirically. During these decades, actual tests were carried out in order to assess the robustness and reliability of forthcoming product ...