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3D frequency-domain seismic modeling with a Block Low-Rank algebraic multifrontal direct solver

Weisbecker, Clément and Amestoy, Patrick and Boiteau, Olivier and Brossier, Romain and Buttari, Alfredo and L'Excellent, Jean-Yves and Operto, Stéphane and Virieux, Jean 3D frequency-domain seismic modeling with a Block Low-Rank algebraic multifrontal direct solver. (2013) In: Annual meeting of the Society of Exploration Geophysicists (SEG 2013), 22 September 2013 - 27 September 2013 (Houston, Texas, United States).

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Official URL: http://dx.doi.org/10.1190/segam2013-0603.1

Abstract

Three-dimensional frequency-domain full waveform inversion of fixed-spread data can be efficiently performed in the viscoacoustic approximation when seismic modeling is based on a sparse direct solver. We present a new 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 show some preliminary simulations in the 3D SEG/EAGE overthrust model, that give some insights on the memory and time complexities of the low-rank solver for frequencies of interest in fullwaveform inversion (FWI) applications

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to Society of Exploration Geophysicists. This papers appears in SEG Technical Program Expanded Abstracts 2013 ISSN(online): 1949-4645. The original PDF is available at: http://library.seg.org/doi/abs/10.1190/segam2013-0603.1
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > EDF (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)
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Deposited By: IRIT IRIT
Deposited On:10 Nov 2016 10:43

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