Ara es mostren els items 1-11 de 11

  • 3D Elastic Full Waveform Inversion - On Land Study case 

    Kormann, Jean; Marti, David; Rodríguez, Juan E.; Marzan, Ignacio; Gutiérrez, Natalia; Ferrer, Miguel; Hanzich, Mauricio; de la Puente, Josep; Carbonell, Ramon; Cela, Jose M.; Fernández, S. (European Association of Geoscientists and Engineers, 2016-05-31)
    Text en actes de congrés
    Accés obert
    Full Waveform Inversion is one of the most advanced processing methods that is recently reaching a mature state after years of solving theoretical and technical issues such as the non-uniqueness of the solution and harnessing ...
  • Acceleration strategies for elastic full waveform inversion workflows in 2D and 3D 

    Kormann, Jean; Rodríguez, Juan E.; Ferrer, Miguel; Farrés, Albert; Gutiérrez, Natalia; de la Puente, Josep; Hanzich, Mauricio; Cela, José M. (Springer International Publishing, 2017-02-01)
    Article
    Accés obert
    Full waveform inversion (FWI) is one of the most challenging procedures to obtain quantitative information of the subsurface. For elastic inversions, when both compressional and shear velocities have to be inverted, the ...
  • Broadcast-enabled massive multicore architectures: a wireless RF approach 

    Abadal Cavallé, Sergi; Sheinman, Benny; Katz, Oded; Markish, Ofer; Elad, Danny; Fournier, Yvan; Roca, Damian; Hanzich, Mauricio; Houzeaux, Guillaume; Nemirovsky, Mario; Alarcón Cot, Eduardo José; Cabellos Aparicio, Alberto (2015-09)
    Article
    Accés obert
    Broadcast traditionally has been regarded as a prohibitive communication transaction in multiprocessor environments. Nowadays, such a constraint largely drives the design of architectures and algorithms all-pervasive in ...
  • Elastic Full Waveform Inversion (FWI) of reflection data with a phase misfit function 

    Kormann, Jean; Rodríguez, Juan E.; Ferrer, Miguel; Gutiérrez, Natalia; de la Puente, Josep; Hanzich, Mauricio; Cela, José M. (Springer International Publishing, 2016-04-08)
    Capítol de llibre
    Accés obert
    Full Waveform Inversion of elastic dataset is challenging due to the complexity introduced by free-surface effects or P-S wave conversions among others. In this context, large offsets are preferred for inversion because ...
  • Evaluating directive-based programming models on Wave Propagation Kernels 

    Rodriguez, Samuel; Farré, Pau; Rosas, Claudia; Hanzich, Mauricio (EAGE, 2017-06-12)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    HPC systems have become mandatory to tackle the ever-increasing challenges imposed by new exploration areas around the world. The requirement for more HPC resources depends on the complexity of the area under exploration, ...
  • Optimizing an Elastic Wave Propagation by Means of a Roofline-Based Strategy on Xeon Processors 

    Hanzich, Mauricio; Farrés, Albert; Rubio, Felix (European Association of Geoscientists and Engineers, 2015-07)
    Text en actes de congrés
    Accés obert
    Acoustic wave propagation has been the preferred engine for geophysical exploration applications for the last few years due to the large cost involved in using better approximations, especially for 3D full-wave field ...
  • Optimizing Fully Anisotropic Elastic Propagation on 2nd Generation Intel Xeon Phi Processors 

    Farres, Albert; Duran, A.; Rosas, Claudia; Hanzich, Mauricio; Yount, C.; Fernandez, S. (2017-06-12)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    This work shows several optimization strategies evaluated and applied to an elastic wave propagation engine, based on a Fully Staggered Grid, running on the latest Intel Xeon Phi processors, the second generation of the ...
  • Radiation-Induced Error Criticality in Modern HPC Parallel Accelerators 

    Oliveira, Daniel; Pilla, Laercio; Hanzich, Mauricio; Fratin, Vinicius; Fernandes, Fernando; Lunardi, Caio; Cela, Jose M.; Navaux, Philippe; Carro, Luigi; Rech, Paolo (2016-03)
    Comunicació de congrés
    Accés obert
    In this paper, we evaluate the error criticality of radiation-induced errors on modern High-Performance Computing (HPC) accelerators (Intel Xeon Phi and NVIDIA K40) through a dedicated set of metrics. We show that, as long ...
  • Toward an automatic full-wave inversion: Synthetic study cases 

    Kormann, Jean; Rodriguez, Juan E.; Gutierrez, Natalia; Ferrer, Miguel; Rojas, Otilio; de la Puente, Josep; Hanzich, Mauricio; Cela, Jose M. (Society of Exploration Geophysicists, 2016-12)
    Article
    Accés obert
    Full-waveform inversion (FWI) in seismic scenarios continues to be a complex procedure for subsurface imaging that might require extensive human interaction in terms of model setup, constraints, and data preconditioning. ...
  • Unveiling WARIS Code, a Parallel and Multi-purpose FDM Framework 

    de la Cruz, Raúl; Hanzich, Mauricio; Folch, Arnau; Houzeaux, Guillaume; Cela, José Maria (Springer, 2014-10-31)
    Text en actes de congrés
    Accés obert
    WARIS is an in-house multi-purpose framework focused on solving scientific problems using Finite Difference Methods as numerical scheme. Its framework was designed from scratch to solve in a parallel and efficient way Earth ...
  • Wavefield compression for adjoint methods in full-waveform inversion 

    Boehm, Christian; Hanzich, Mauricio; de la Puente, Josep; Fichtner, Andreas (Society of Exploration Geophysicists, 2016-09-13)
    Article
    Accés obert
    Adjoint methods are a key ingredient of gradient-based full-waveform inversion schemes. While being conceptually elegant, they face the challenge of massive memory requirements caused by the opposite time directions of ...