GRChombo is a new open-source code for numerical general relativity simulations. It is developed and maintained by a collaboration of numerical relativists with a wide range of research interests, from early universe cosmology to astrophysics and mathematical general relativity, and has been used in many papers since its first release in 2015.
GRChombo is written entirely in C++14, using hybrid MPI/OpenMP parallelism and vector intrinsics to achieve good performance on the latest architectures. Furthermore, it makes use of the Chombo library for adaptive mesh refinement to allow automatic increasing and decreasing of the grid resolution in regions of arbitrary shape and topology.
Please visit www.grchombo.org for the full list of developers and their institutions, a list of publications using GRChombo, and some videos.
Detailed installation instructions and usage examples are available in our wiki.
We welcome feedback, bug reports, and contributions. Please consult the wiki for our coding style and testing policy before filing a pull request.
GRChombo is licensed under the BSD 3-Clause License. Please see LICENSE for details.