Enviaments recents

  • Improving the efficiency of multicore systems through software and hardware cooperation 

    Jiménez Pérez, Víctor Javier (Universitat Politècnica de Catalunya, 2016-10-20)
    Tesi
    Accés obert
    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 ...
  • Power-constrained aware and latency-aware microarchitectural optimizations in many-core processors 

    Jha, Sudhanshu S. (Universitat Politècnica de Catalunya, 2016-10-05)
    Tesi
    Accés obert
    As the transistor budgets outpace the power envelope (the power-wall issue), new architectural and microarchitectural techniques are needed to improve, or at least maintain, the power efficiency of next-generation processors. ...
  • A multicore emulator with a profiling infrastructure for transactional memory on FPGA 

    Sönmez, Nehir (Universitat Politècnica de Catalunya, 2012-09-19)
    Tesi
    Accés obert
    This thesis attempts to bring together two recent topics by presenting a flexible Transactional Memory environment on a multicore prototype that is realized on FPGA fabric. For this, we devise a MIPS-compatible shared-memory ...
  • Decoupling state from control in software-defined networking 

    Rodríguez Natal, Alberto (Universitat Politècnica de Catalunya, 2016-07-04)
    Tesi
    Accés obert
    Software-Defined Networking (SDN) arose as a solution to address the limitations of traditional networking. In SDN networks, the control-plane is decoupled from the data-plane devices and logically centralized in a new ...
  • Soft error mitigation techniques for future chip multiprocessors 

    Upasani, Gaurang R (Universitat Politècnica de Catalunya, 2016-02-01)
    Tesi
    Accés obert
    The sustained drive to downsize the transistors has reached a point where device sensitivity against transient faults due to neutron and alpha particle strikes a.k.a soft errors has moved to the forefront of concerns for ...
  • The MPI/OmpSs parallel programming model 

    Marjanović, Vladimir (Universitat Politècnica de Catalunya, 2016-01-21)
    Tesi
    Accés obert
    Even today supercomputing systems have already reached millions of cores for a single machine, which are connected by using a complex network interconnection. Reducing communication time across processes becomes the most ...
  • Novel vector architectures for data management 

    Hayes, Timothy (Universitat Politècnica de Catalunya, 2015-07-08)
    Tesi
    Accés obert
    As the rate of annual data generation grows exponentially, there is a demand to manage, query and summarise vast amounts of information quickly. In the past, frequency scaling was relied upon to push application throughput. ...
  • Reliability for exascale computing : system modelling and error mitigation for task-parallel HPC applications 

    Subasi, Omer (Universitat Politècnica de Catalunya, 2016-10-27)
    Tesi
    Accés obert
    As high performance computing (HPC) systems continue to grow, their fault rate increases. Applications running on these systems have to deal with rates on the order of hours or days. Furthermore, some studies for future ...
  • Improving time predictability of shared hardware resources in real-time multicore systems : emphasis on the space domain 

    Jalle Ibarra, Javier (Universitat Politècnica de Catalunya, 2016-07-18)
    Tesi
    Accés obert
    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) ...
  • Energy sharing in smart grids : a game theory approach 

    Alskaif, Tarek (Universitat Politècnica de Catalunya, 2016-07-26)
    Tesi
    Accés obert
    The need for energy conservation, grid reliability, and improved operational efficiencies have led to the changes from conventional electricity grids which have “blind” and manual operations, along with the electromechanical ...

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