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3D frequency-domain seismic modeling with a Parallel BLR multifrontal direct solver

Amestoy, Patrick and Brossier, Romain and Buttari, Alfredo and L'Excellent, Jean-Yves and Mary, Théo and Métivier, Ludovic and Miniussi, Alain and Operto, Stéphane and Virieux, Jean and Weisbecker, Clément 3D frequency-domain seismic modeling with a Parallel BLR multifrontal direct solver. (2015) In: Society of Exploration Geophysicists annual meeting (SEG 2015), 18 October 2015 - 23 October 2015 (New-Orleans, United States).

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Official URL: http://dx.doi.org/10.1190/segam2015-5811693.1

Abstract

Three-dimensional frequency-domain full waveform inversion (FWI) of fixed-spread data can be efficiently performed in the visco-acoustic approximation when seismic modeling is based on a sparse direct solver. We present a parallel algebraic Block Low-Rank (BLR) multifrontal solver which provides an approximate solution of the time-harmonic wave equation with a reduced operation count, memory demand, and volume of communication relative to the full-rank solver. We analyze the parallel efficiency and the accuracy of the solver with a realistic FWI case study from the Valhall oil field.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to Society of Exploration Geophysicists (SEG). This papers appears in SEG Technical Program Expanded Abstracts 2015 ISSN: 1949-4645 The original PDF of the article can be found at: http://library.seg.org/doi/abs/10.1190/segam2015-5811693.1
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
French research institutions > Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux - IFSTTAR (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
French research institutions > Institut National de la Recherche en Informatique et en Automatique - INRIA (FRANCE)
French research institutions > Institut de Recherche pour le Développement - IRD (FRANCE)
Other partners > Université Nice Sophia Antipolis (FRANCE)
Other partners > Observatoire de la Côte d'Azur (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université Toulouse 1 Capitole - UT1 (FRANCE)
Other partners > Université Joseph Fourier Grenoble 1 - UJF (FRANCE)
Other partners > Université de Savoie (FRANCE)
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Deposited By: IRIT IRIT
Deposited On:19 May 2017 14:39

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