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petgem is a parallel and high-order code for active-source (e.g. CSEM) and passive-source (e.g. MT) geophysics electromagnetic modeling in 3D arbitrary marine/land problems under anisotropic conductivities.

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Documentation Status Travis-CI Coveralls Codacy-grade Pypi-petgem GitHub release (latest by date) Ubuntu support petgem-license

Parallel Edge-based Tool for Geophysical Electromagnetic Modelling

petgem is a Python code for the scalable solution of electromagnetic diffusion fields on tetrahedral meshes, as these are the easiest to scale-up to very large domains or arbitrary shape. It supports distributed-memory parallelism through petsc4py package. petgem allow users to specify high-order edge-based variational forms of H(curl) for the simulation of electromagnetic fields in realistic 3D CSEM/MT surveys with accuracy, reliability and efficiency.

More information

For more information regarding installation, usage, contributing and bug reports see:

The documentation source is in the doc/ directory. The following steps summarize how to generate petgem documentation.

Move to the petgem doc directory:

$ cd doc

Generate the petgem documentation in HTML format by typing:

$ make html

Or, if you prefer the PDF format by typing:

$ make latexpdf

Requests and contributions are welcome.

Dependencies

  • A matching version of PETSc_
  • Python_ (versions 3.5.2, 3.6.3, 3.6.9, 3.12.0, 3.14.0, and 3.17.0 have been tested).
  • A recent NumPy_ release.
  • A recent Scipy_ release.
  • A recent Singleton-decorator_ release.
  • A recent Sphinx_ release.
  • A recent texlive_ release.
  • A recent Petsc4py_ release.
  • A recent Mpi4py_ release.
  • A recent h5py_ release.

Citation

If you publish results for which you used petgem, please give credit by citing Castillo-Reyes, O. et al. (2019):

Castillo-Reyes, O., de la Puente, J., García-Castillo, L. E., Cela, J.M. (2019). Parallel 3-D marine controlled-source electromagnetic modelling using high-order tetrahedral Nédélec elements. Geophysical Journal International, Volume 219, Issue 1, October 2019, Pages 39–65, https://doi.org/10.1093/gji/ggz285

and Castillo-Reyes, O. et al. (2018):

Castillo-Reyes, O., de la Puente, J., Cela, J. M. (2018). PETGEM: A parallel code for 3D CSEM forward modeling using edge finite elements. Computers & Geosciences, vol 119: 123-136. ISSN 0098-3004, Elsevier. https://doi.org/10.1016/j.cageo.2018.07.005

License

petgem is developed as open-source under BSD-3 license at Computer Applications in Science & Engineering of the Barcelona Supercomputing Center - Centro Nacional de Supercomputación. Please, see the CONDITIONS OF USE described in the LICENSE.rst file.

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petgem is a parallel and high-order code for active-source (e.g. CSEM) and passive-source (e.g. MT) geophysics electromagnetic modeling in 3D arbitrary marine/land problems under anisotropic conductivities.

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