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SMIwiz: An integrated toolbox for multidimensional seismic modelling and imaging.
- Source :
-
Computer Physics Communications . Feb2024, Vol. 295, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- This paper contributes an open source software - SMIwiz, which integrates seismic modelling, reverse time migration (RTM), and full waveform inversion (FWI) into a unified computer implementation. SMIwiz has the machinery to do both 2D and 3D simulation in a consistent manner. The package features a number of computational recipes for efficient calculation of imaging condition and inversion gradient: a dynamic evolving computing box to limit the simulation cube and a well-designed wavefield reconstruction strategy to reduce the memory consumption when dealing with 3D problems. The modelling in SMIwiz runs independently: each shot corresponds to one processor in a bijective manner to maximize the scalability. A batchwise job scheduling strategy is designed to handle large 3D imaging tasks on computer with limited number of cores. The viability of SMIwiz is demonstrated by a number of applications on benchmark models. Program Title: SMIwiz CPC Library link to program files: https://doi.org/10.17632/tygszns27k.1 Developer's repository link: https://github.com/yangpl/SMIwiz Licensing provisions: GNU General Public License v3.0 Programming language: C, Shell, Fortran External dependencies: MPI [1], FFTW [2] Nature of problem: Seismic modelling and imaging (FWI and RTM) Solution method: High-order finite-difference time-domain (FDTD) for modelling on staggered grid; Quasi-Newton LBFGS algorithm for nonlinear optimization; line search to estimate step length based on Wolfe condition [1] https://www.mpich.org/ [2] http://fftw.org/ [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00104655
- Volume :
- 295
- Database :
- Academic Search Index
- Journal :
- Computer Physics Communications
- Publication Type :
- Periodical
- Accession number :
- 174387096
- Full Text :
- https://doi.org/10.1016/j.cpc.2023.109011