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Listar por autor "Flegar, Goran"

RiuNet: Repositorio Institucional de la Universidad Politécnica de Valencia

Listar por autor "Flegar, Goran"

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    Acceleration of PageRank with customized precision based on mantissa segmentation 
    Gruetzmacher, Thomas; Cojean, Terry; Flegar, Goran; Anzt, Hartwig; Quintana-Orti, Enrique S. (Association for Computing Machinery, 2020-03)
    [EN] We describe the application of a communication-reduction technique for the PageRank algorithm that dynamically adapts the precision of the data access to the numerical requirements of the algorithm as the iteration ...
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    Adaptive Precision Block-Jacobi for High Performance Preconditioning in the Ginkgo Linear Algebra Software 
    Flegar, Goran; Anzt, Hartwig; Cojean, Terry; Quintana-Ortí, Enrique S. (Association for Computing Machinery, 2021-04)
    [EN] The use of mixed precision in numerical algorithms is a promising strategy for accelerating scientific applications. In particular, the adoption of specialized hardware and data formats for low-precision arithmetic ...
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    Adaptive precision in block-Jacobi preconditioning for iterative sparse linear system solvers 
    Anzt, Hartwig; Dongarra, Jack; Flegar, Goran; Higham, Nicholas J.; Quintana Ortí, Enrique Salvador (John Wiley & Sons, 2019-03-25)
    [EN] We propose an adaptive scheme to reduce communication overhead caused by data movement by selectively storing the diagonal blocks of a block-Jacobi preconditioner in different precision formats (half, single, or ...
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    FloatX: A C++ Library for Customized Floating-Point Arithmetic 
    Flegar, Goran; Scheidegger, Florian; Novakovic, Vedran; Mariani, Giovani; Tomás Domínguez, Andrés Enrique; Malossi, Cristiano; Quintana-Ortí, Enrique S. (Association for Computing Machinery, 2019-12)
    [EN] We present FloatX (Float eXtended), a C++ framework to investigate the effect of leveraging customized floating-point formats in numerical applications. FloatX formats are based on binary IEEE 754 with smaller significand ...
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    Ginkgo: A Modern Linear Operator Algebra Framework for High Performance Computing 
    Anzt, Hartwig; Cojean, Terry; Flegar, Goran; Göbel, Fritz; Grützmacher, Thomas; Nayak, Pratik; Ribizel, Tobias; Tsai, Yuhsiang Mike; Quintana-Ortí, Enrique S. (Association for Computing Machinery, 2022-03)
    [EN] In this article, we present GINKGO, a modern C++ math library for scientific high performance computing. While classical linear algebra libraries act on matrix and vector objects, Gnswo's design principle abstracts ...
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    Toward a modular precision ecosystem for high performance computing 
    Anzt, Hartwig; Flegar, Goran; Gruetzmacher, Thomas; Quintana-Orti, Enrique S. (SAGE Publications, 2019-11)
    [EN] With the memory bandwidth of current computer architectures being significantly slower than the (floating point) arithmetic performance, many scientific computations only leverage a fraction of the computational power ...
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    Variable-size batched Gauss-Jordan elimination for block-Jacobi preconditioning on graphics processors 
    Anzt, Hartwig; Dongarra, Jack; Flegar, Goran; Quintana Ortí, Enrique S. (Elsevier, 2019-01)
    [EN] In this work, we address the efficient realization of block-Jacobi preconditioning on graphics processing units (GPUs). This task requires the solution of a collection of small and independent linear systems. To fully ...