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  • Dynamic sampling rate: harnessing frame coherence in graphics applications for energy-efficient GPUs 

    Anglada Sánchez, Martí; de Lucas Casamayor, Enrique; Parcerisa Bundó, Joan Manuel; Aragón Alcaraz, Juan Luis; González Colás, Antonio María (Springer Nature, 2022-04-10)
    Article
    Open Access
    In real-time rendering, a 3D scene is modelled with meshes of triangles that the GPU projects to the screen. They are discretized by sampling each triangle at regular space intervals to generate fragments which are then ...

  • Fast and accurate SER estimation for large combinational blocks in early stages of the design 

    Anglada Sánchez, Martí; Canal Corretger, Ramon; Aragón Alcaraz, Juan Luis; González Colás, Antonio María (Institute of Electrical and Electronics Engineers (IEEE), 2021-07-01)
    Article
    Open Access
    Soft Error Rate (SER) estimation is an important challenge for integrated circuits because of the increased vulnerability brought by technology scaling. This paper presents a methodology to estimate in early stages of the ...

  • Energy-efficient stream compaction through filtering and coalescing accesses in GPGPU memory partitions 

    Segura Salvador, Albert; Arnau Montañés, José María; González Colás, Antonio María (Institute of Electrical and Electronics Engineers (IEEE), 2022-07-01)
    Article
    Open Access
    Graph-based applications are essential in emerging domains such as data analytics or machine learning. Data gathering in a knowledge-based society requires great data processing efficiency. High-throughput GPGPU architectures ...

  • DNN pruning with principal component analysis and connection importance estimation 

    Riera Villanueva, Marc; Arnau Montañés, José María; González Colás, Antonio María (2022-01)
    Article
    Open Access
    DNN pruning reduces memory footprint and computational work of DNN-based solutions to improve performance and energy-efficiency. An effective pruning scheme should be able to systematically remove connections and/or neurons ...

  • Omega-Test: A predictive early-Z culling to improve the graphics pipeline energy-efficiency 

    Corbalán Navarro, David; Aragón Alcaraz, Juan Luis; Anglada Sánchez, Martí; Lucas Casamayor, Enrique de; Parcerisa Bundó, Joan Manuel; González Colás, Antonio María (2021-06-09)
    Article
    Open Access
    The most common task of GPUs is to render images in real time. When rendering a 3D scene, a key step is to determine which parts of every object are visible in the final image. There are different approaches to solve the ...

  • LAWS: Locality-AWare Scheme for automatic speech recognition 

    Yazdani Aminabadi, Reza; Arnau Montañés, José María; González Colás, Antonio María (Institute of Electrical and Electronics Engineers (IEEE), 2020-08-01)
    Article
    Open Access
    Automatic Speech Recognition (ASR) systems are changing the way people interact with different applications on mobile devices. Fulfilling such user-interactivity requires not only a highly accurate, large-vocabulary ...

  • Design and evaluation of an ultra low-power human-quality speech recognition system 

    Pinto Rivero, Daniel; Arnau Montañés, José María; González Colás, Antonio María (2020-11)
    Article
    Open Access
    Automatic Speech Recognition (ASR) has experienced a dramatic evolution since pioneer development of Bell Lab’s single-digit recognizer more than 50 years ago. Current ASR systems have taken advantage of the tremendous ...

  • Tendencias en la microarquitectura de los procesadores 

    González Colás, Antonio María (Asociación de Técnicos de Informática, 2000-05)
    Article
    Open Access
    En este artículo se revisa la microarquitectura de los procesadores actuales. Seguidamente de presentan las principales expectativas en la evolución de la tecnología. A continuación de destacan las principales limitaciones ...

  • Multi-objective interior design optimization method based on sustainability concepts for post-disaster temporary housing units 

    Hosseini, Seyed Mohammad Amin; Yazdani Aminabadi, Reza; Fuente Antequera, Albert de la (2020-04)
    Article
    Open Access
    Temporary housing units (THUs), which are provided after disasters, are crucial in terms of sustainability pillars (economic, social, and environmental). In general, THUs, which are regular houses with minimum space and ...

  • A low-power, high-performance speech recognition accelerator 

    Yazdani, Reza; Arnau Montañés, José María; González Colás, Antonio María (Institute of Electrical and Electronics Engineers (IEEE), 2019-12-01)
    Article
    Open Access
    Automatic Speech Recognition (ASR) is becoming increasingly ubiquitous, especially in the mobile segment. Fast and accurate ASR comes at high energy cost, not being affordable for the tiny power-budgeted mobile devices. ...

  • CGPA: Coarse-Grained Pruning of Activations for Energy-Efficient RNN Inference 

    Riera Villanueva, Marc; Arnau Montañés, José María; González Colás, Antonio María (2019-09-01)
    Article
    Open Access
    Recurrent neural networks (RNNs) perform element-wise multiplications across the activations of gates. We show that a significant percentage of activations are saturated and propose coarse-grained pruning of activations ...

  • 2018 International Symposium on Computer Architecture influential paper award 

    González Colás, Antonio María (2018-07-01)
    Article
    Open Access
    The International Symposium on Computer Architecture (ISCA) recognizes every year the most influential paper published in this conference 15 years earlier, based on its impact on research, development, products or ideas. ...

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