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).
|
(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 289kB |
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.
Repository Staff Only: item control page
