Now showing items 1-15 of 15

    • 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)
      Conference report
      Open Access
      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 ...
    • A data-centric directive-based framework to accelerate out-of-core stencil computation on a GPU 

      Shen, Jingcheng; Ino, Fumihiko; Farrés Coma, Albert; Hanzich, Mauricio (Institute of Electronics, Information and Communication Engineers, 2020-12-01)
      Article
      Open Access
      Graphics processing units (GPUs) are highly efficient architectures for parallel stencil code; however, the small device (i.e., GPU) memory capacity (several tens of GBs) necessitates the use of out-of-core computation to ...
    • 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
      Open Access
      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
      Open Access
      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)
      Part of book or chapter of book
      Open Access
      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)
      Conference lecture
      Open Access
      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, ...
    • Optimization strategies for geophysics models on manycore systems 

      Serpa, Matheus S.; Cruz, Eduardo HM; Diener, Matthias; Krause, Arthur M.; Navaux, Philippe; Panetta, Jairo; Farrés Coma, Albert; Rosas, Claudia; Hanzich, Mauricio (2019-01-17)
      Article
      Open Access
      Many software mechanisms for geophysics exploration in oil and gas industries are based on wave propagation simulation. To perform such simulations, state-of-the-art high-performance computing architectures are employed, ...
    • 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)
      Conference report
      Open Access
      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)
      Conference lecture
      Open Access
      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 ...
    • Performance optimization of fully anisotropic elastic wave propagation on 2nd Generation Intel R PhiTM processors 

      Farres, Albert; Rosas, Claudia; Hanzich, Mauricio; Duran, Alejandro; Yount, Charles (Barcelona Supercomputing Center, 2019-05-07)
      Conference report
      Open Access
    • 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)
      Conference lecture
      Open Access
      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 ...
    • Strategies to Improve the Performance of a Geophysics Model for Different Manycore Systems 

      Serpa, Matheus S.; Cruz, Eduardo H.M.; Diener, Matthias; Krause, Arthur M.; Navaux, Philippe O.A.; Farrés, Albert; Rosas, Claudia; Hanzich, Mauricio; Panetta, Jairo (IEEE, 2017-11-16)
      Conference lecture
      Open Access
      Many software mechanisms for geophysics exploration in Oil & Gas industries are based on wave propagation simulation. To perform such simulations, state-of-art HPC architectures are employed, generating results faster and ...
    • Toward an automatic full-wave inversion: Synthetic study cases 

      Kormann, Jean; Rodriguez, Juan E.; Gutiérrez, Natalia; Ferrer, Miguel; Rojas, Otilio; de la Puente, Josep; Hanzich, Mauricio; Cela, Jose M. (Society of Exploration Geophysicists, 2016-12)
      Article
      Open Access
      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)
      Conference report
      Open Access
      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
      Open Access
      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 ...