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    Analysis of GPU-based convolution for acoustic wave propagation modeling with finite differences: Fortran to CUDA-C step-by-step

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    SADAHIRO-THESIS-2014.pdf (6.646Mb)
    Date
    2014-05
    Author
    Sadahiro, Makoto
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    Abstract
    By projecting observed microseismic data backward in time to when fracturing occurred, it is possible to locate the fracture events in space, assuming a correct velocity model. In order to achieve this task in near real-time, a robust computational system to handle backward propagation, or Reverse Time Migration (RTM), is required. We can then test many different velocity models for each run of the RTM. We investigate the use of a Graphics Processing Unit (GPU) based system using Compute Unified Device Architecture for C (CUDA-C) as the programming language. Our preliminary results show a large improvement in run-time over conventional programming methods based on conventional Central Processing Unit (CPU) computing with Fortran. Considerable room for improvement still remains.
    Department
    Geological Sciences
    Description
    text
    Subject
    Graphics Processing Unit
    Compute Unified Device Architecture for C
    Seismic
    Imaging, Microseismic
    RTM
    Reverse Time Migration
    GPU
    CUDA
    Acoustic wave propagation
    Fortran
    URI
    http://hdl.handle.net/2152/25746
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    © The University of Texas at Austin