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Overview
========
This is a linear scalar elliptic PDE solver using the multigrid method. See the
author's PhD thesis for more information.
If you use this code in your research that leads to a publication, please cite
our paper:
Universality of Curvature Invariants in Critical Vacuum Gravitational Collapse
https://doi.org/10.1103/PhysRevLett.127.011104
If you modify the code, we ask that you share your changes with the author (e.g.
via email).
Building and installation
=========================
A C99-compliant compiler and a POSIX environment are expected, as well as the
foloowing dependencies:
- BLAS
- LAPACKE (the C interface to LAPACK)
- libthreadpool (thread pool utility library)
- libndarray (array utility library)
- MPI
You must create a separate build directory and run the 'configure' script from
there, followed by 'make'.
The shared library and the headers mg2d.h, mg2d_boundary.h, mg2d_constants.h
must be copied to where the linker and C compiler, respectively, will find them
(typically /usr/local/lib and /usr/local/include).
Usage
=====
The public C API is described in the header files.
A simplistic Python wrapper using ctypes is also provided. It largely mirrors
the C API.
Licence
=======
This library is free software, available under GNU GPLv3 (see the LICENCE file
for full licence text).
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