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Link to original content: https://doi.org/10.1007/s11554-011-0224-7
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The 2D wavelet transform on emerging architectures: GPUs and multicores

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Abstract

Because of the computational power of today’s GPUs, they are starting to be harnessed more and more to help out CPUs on high-performance computing. In addition, an increasing number of today’s state-of-the-art supercomputers include commodity GPUs to bring us unprecedented levels of performance in terms of raw GFLOPS and GFLOPS/cost. In this work, we present a GPU implementation of an image processing application of growing popularity: The 2D fast wavelet transform (2D-FWT). Based on a pair of Quadrature Mirror Filters, a complete set of application-specific optimizations are developed from a CUDA perspective to achieve outstanding factor gains over a highly optimized version of 2D-FWT run in the CPU. An alternative approach based on the Lifting Scheme is also described in Franco et al. (Acceleration of the 2D wavelet transform for CUDA-enabled Devices, 2010). Then, we investigate hardware improvements like multicores on the CPU side, and exploit them at thread-level parallelism using the OpenMP API and pthreads . Overall, the GPU exhibits better scalability and parallel performance on large-scale images to become a solid alternative for computing the 2D-FWT versus those thread-level methods run on emerging multicore architectures.

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Authors and Affiliations

  1. Computer Engineering Department, University of Murcia, Murcia, Spain

    Joaquín Franco, Gregorio Bernabé & Juan Fernández

  2. Computer Architecture Department, University of Malaga, Malaga, Spain

    Manuel Ujaldón

Authors
  1. Joaquín Franco
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  2. Gregorio Bernabé
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  3. Juan Fernández
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  4. Manuel Ujaldón
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Corresponding author

Correspondence to Manuel Ujaldón.

Additional information

This work has been supported by the Spanish MEC and EU FEDER funds under grants “Consolider Ingenio-2010 CSD2006-00046” and “TIN2006-15516-C04-03”.

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Franco, J., Bernabé, G., Fernández, J. et al. The 2D wavelet transform on emerging architectures: GPUs and multicores. J Real-Time Image Proc 7, 145–152 (2012). https://doi.org/10.1007/s11554-011-0224-7

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