Now showing items 124-143 of 361

    Enhanced Fast Rerouting Mechanisms for Protected Traffic in MPLS Networks 

    Hundessa Gonfa, Lemma (Date of defense: 2003-04-03)

    Multiprotocol Label Switching (MPLS) fuses the intelligence of routing with the performance of switching and provides significant benefits to networks with a pure IP architecture as well as those with IP and ATM or a mix ...

    Enhancing the efficiency and practicality of software transactional memory on massively multithreaded systems 

    Kestor, Gökçen (Date of defense: 2013-03-22)

    Chip Multithreading (CMT) processors promise to deliver higher performance by running more than one stream of instructions in parallel. To exploit CMT's capabilities, programmers have to parallelize their applications, ...

    Enhancing timing analysis for COTS multicores for safety-related industry : a software approach 

    Fernández Díaz, Gabriel Alejandro (Date of defense: 2018-11-15)

    Artificial system interaction with the real environment is in general based on the deployment of properly coordinated sensors and actuators, establishing between them a “dynamic control-loop”. The time to close this ...

    Estimación automática de grupos en entornos de aprendizaje cooperativo con aplicaciones sensibles al contexto 

    Meseguer Pallarès, Roc (Date of defense: 2012-03-02)

    In collaborative learning scenarios, the use of computers and communication networks to facilitate collaboration is becoming popular, the Computer-Supported Collaborative Learning (CSCL). In face-to-face CSCL scenarios, ...

    Estrategias de descomposición en dominios para entornos Grid 

    Otero Calviño, Beatriz (Date of defense: 2007-04-13)

    En este trabajo estamos interesados en realizar simulaciones numéricas basadas en elementos finitos con integración explícita en el tiempo utilizando la tecnología Grid.<br/>Actualmente, las simulaciones explícitas de ...

    Estudi i proposta d'esquemes d'avaluació per a dispositius ATM 

    Solé Pareta, Josep (Date of defense: 1991-05-17)

    Las contribuciones principales del trabajo realizado en esta tesis son: 1) estudio de la influencia del grado de rafagueo (burstiness) del trafico en el comportamiento de los dispositivos que integran una red ATM, 2) ...

    Evaluating techniques for parallelization tuning in MPI, OmpSs and MPI/OmpSs 

    Subotic, Vladimir (Date of defense: 2013-07-26)

    Parallel programming is used to partition a computational problem among multiple processing units and to define how they interact (communicate and synchronize) in order to guarantee the correct result. The performance that ...

    Evaluation of STT-MRAM main memory for HPC and real-time systems 

    Asifuzzaman, Kazi (Date of defense: 2019-07-29)

    It is questionable whether DRAM will continue to scale and will meet the needs of next-generation systems. Therefore, significant effort is invested in research and development of novel memory technologies. One of the ...

    Exploiting asymmetric multi-core systems with flexible system software 

    Chronaki, Kallia (Date of defense: 2018-11-21)

    Asymmetric multi-cores (AMCs) are a successful architectural solution for both mobile devices and supercomputers. These architectures combine different types of processing cores designed at different performance and power ...

    Exploiting data locality in cache-coherent NUMA systems 

    Sánchez Barrera, Isaac (Date of defense: 2022-04-06)

    The end of Dennard scaling has caused a stagnation of the clock frequency in computers.To overcome this issue, in the last two decades vendors have been integrating larger numbers of processing elements in the systems, ...

    Exploiting frame coherence in real-time rendering for energy-efficient GPUs 

    Anglada Sánchez, Martí (Date of defense: 2020-06-09)

    The computation capabilities of mobile GPUs have greatly evolved in the last generations, allowing real-time rendering of realistic scenes. However, the desire for processing complex environments clashes with the ...

    Exploiting optical signal analysis for autonomous communications 

    Sequeira, Diogo Gonçalo (Date of defense: 2022-10-31)

    (English) Optical communications have been extensively investigated and enhanced in the last decades. Nowadays, they are responsible to transport all the data traffic generated around the world, from access to the core ...

    Exploiting task-based programming models for resilience 

    Jaulmes, Luc (Date of defense: 2019-06-21)

    Hardware errors become more common as silicon technologies shrink and become more vulnerable, especially in memory cells, which are the most exposed to errors. Permanent and intermittent faults are caused by manufacturing ...

    Exploring coordinated software and hardware support for hardware resource allocation 

    Figueiredo Boneti, Carlos Santieri de (Date of defense: 2009-09-04)

    Multithreaded processors are now common in the industry as they offer high performance at a low cost. Traditionally, in such processors, the assignation of hardware resources between the multiple threads is done implicitly, ...

    Exploring the topical structure of short text through probability models : from tasks to fundamentals 

    Capdevila Pujol, Joan (Date of defense: 2019-09-26)

    Recent technological advances have radically changed the way we communicate. Today’s communication has become ubiquitous and it has fostered the need for information that is easier to create, spread and consume. As a ...

    Extending the applicability of deterministic multithreading 

    Nowack, Vesna (Date of defense: 2016-01-12)

    With the increased number of cores on a single processor chip, an application can achieve good performance if it splits the execution into multiple threads that run on multiple cores at the same time. To synchronize threads, ...

    An extensive study on iterative solver resilience : characterization, detection and prediction 

    Mutlu, Burcu O. (Date of defense: 2019-11-12)

    Soft errors caused by transient bit flips have the potential to significantly impactan applicalion's behavior. This has motivated the design of an array of techniques to detect, isolate, and correct soft errors using ...

    File system metadata virtualization 

    Artiaga Amouroux, Ernest (Date of defense: 2014-01-17)

    The advance of computing systems has brought new ways to use and access the stored data that push the architecture of traditional file systems to its limits, making them inadequate to handle the new needs. Current challenges ...

    Flexible architecture for the future internet scalability of SDN control plane 

    Rasol, Kurdman Abdulrahman (Date of defense: 2022-01-28)

    Software-Defined Networking (SDN) separates the control plane from the data plane. The initial SDN approach involves a single centralized controller, which may not scale properly as a network grows in size. Distributed ...

    Formal mission specification and execution mechanisms for unmanned aircraft systems 

    Santamaría Barnadas, Eduard (Date of defense: 2010-06-15)

    Unmanned Aircraft Systems (UAS) are rapidly gaining attention due to the increasing potential of their applications in the civil domain. UAS can provide great value performing environmental applications, during emergency ...