Recent Submissions

  • Performance analysis and optimization of automatic speech recognition 

    Tabani, Hamid; Arnau Montañés, José María; Tubella Murgadas, Jordi; González Colás, Antonio María (2017-08-12)
    Article
    Open Access
    Fast and accurate Automatic Speech Recognition (ASR) is emerging as a key application for mobile devices. Delivering ASR on such devices is challenging due to the compute-intensive nature of the problem and the power ...
  • Statistical analysis and comparison of 2T and 3T1D e-DRAM minimum energy operation 

    Rana, Manish; Canal Corretger, Ramon; Amat Bertran, Esteve; Rubio Sola, Jose Antonio (2017-03-01)
    Article
    Open Access
    Bio-medical wearable devices restricted to their small-capacity embedded-battery require energy-efficiency of the highest order. However, minimum-energy point (MEP) at sub-threshold voltages is unattainable with SRAM memory, ...
  • Executing algorithms with hypercube topology on torus multicomputers 

    González Colás, Antonio María; Valero García, Miguel; Díaz de Cerio Ripalda, Luis Manuel (1995-08)
    Article
    Open Access
    Many parallel algorithms use hypercubes as the communication topology among their processes. When such algorithms are executed on hypercube multicomputers the communication cost is kept minimum since processes can be ...
  • Exploiting narrow values for soft error tolerance 

    Ergin, Oguz; Unsal, Osman Sabri; Vera Rivera, Francisco Javier; González Colás, Antonio María (2006-07)
    Article
    Open Access
    Soft errors are an important challenge in contemporary microprocessors. Particle hits on the components of a processor are expected to create an increasing number of transient errors with each new microprocessor generation. ...
  • Reliability: fallacy or reality? 

    González Colás, Antonio María; Mahlke, Scott; Mukherjee, Shubu; Sendag, Resit; Chiou, Derek; Yi, Joshua J. (2007-11)
    Article
    Open Access
    As chip architects and manufacturers plumb ever-smaller process technologies, new species of faults are compromising device reliability, following an introduction by the authors debate whether reliability is a legitimate ...
  • Thread partitioning and value prediction for exploiting speculative thread-level parallelism 

    Marcuello, Pedro; González Colás, Antonio María; Tubella Murgadas, Jordi (2004-02)
    Article
    Open Access
    Speculative thread-level parallelism has been recently proposed as a source of parallelism to improve the performance in applications where parallel threads are hard to find. However, the efficiency of this execution model ...
  • Understanding the thermal implications of multicore architectures 

    Chaparro, Pedro; González González, José; Magklis, Grigorios; Cai, Qiong; González Colás, Antonio María (2007-08)
    Article
    Open Access
    Multicore architectures are becoming the main design paradigm for current and future processors. The main reason is that multicore designs provide an effective way of overcoming instruction-level parallelism (ILP) limitations ...
  • Reducing branch delay to zero in pipelined processors 

    González Colás, Antonio María; Llaberia Griñó, José M. (1993-03)
    Article
    Open Access
    A mechanism to reduce the cost of branches in pipelined processors is described and evaluated. It is based on the use of multiple prefetch, early computation of the target address, delayed branch, and parallel execution ...
  • Randomized cache placement for eliminating conflicts 

    Topham, Nigel; González Colás, Antonio María (1999-02)
    Article
    Open Access
    Applications with regular patterns of memory access can experience high levels of cache conflict misses. In shared-memory multiprocessors conflict misses can be increased significantly by the data transpositions required ...
  • Refueling: Preventing wire degradation due to electromigration 

    Abella Ferrer, Jaume; Vera Rivera, Francisco Javier; Unsal, Osman Sabri; Ergin, Oguz; González Colás, Antonio María; Tschanz, James W. (2008-12)
    Article
    Open Access
    Electromigration is a major source of wire and via failure. Refueling undoes EM for bidirectional wires and power/ground grids-some of a chip's most vulnerable wires. Refueling exploits EM's self-healing effect by balancing ...
  • Control speculation for energy-efficient next-generation superscalar processors 

    Aragón, Juan Luis; González González, José; González Colás, Antonio María (2006-03)
    Article
    Open Access
    Conventional front-end designs attempt to maximize the number of "in-flight" instructions in the pipeline. However, branch mispredictions cause the processor to fetch useless instructions that are eventually squashed, ...
  • Analyzing data locality in numeric applications 

    Sánchez Navarro, F. Jesús; González Colás, Antonio María (2000-07)
    Article
    Open Access
    In this article, we introduce SPLAT (Static and Profiled Data Locality Analysis Tool). The tool's purpose is to provide a fast study of memory behavior without the necessity of a costly memory simulator. SPLAT consists of ...

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