Code download


The RAMSES code is now on Bitbucket. The simplest way to get a recent copy of the code is to use git using the following command:

$ git clone

More informations cab be found directly on

RAMSES was written by Romain TEYSSIER. This software is governed by the CeCILL license under French law and abiding by the rules of distribution of free software. You can use, modify and/or redistribute the software under the terms of the CeCILL license as circulated by CEA, CNRS and INRIA (see ). As a counterpart to the access to the source code and rights to copy, modify and redistribute granted by the license, users are provided only with a limited warranty and the software's author, the holder of the economic rights, and the successive licensors have only limited liability. In this respect, the user's attention is drawn to the risks associated with loading, using, modifying and/or developing or reproducing the software by the user in light of its specific status of free software, that may mean that it is complicated to manipulate, and that also therefore means that it is reserved for developers and experienced professionals having in-depth IT knowledge. Users are therefore encouraged to load and test the software's suitability as regards their requirements in conditions enabling the security of their systems and/or data to be ensured and, more generally, to use and operate it in the same conditions as regards security. The fact that you are presently reading this means that you have had knowledge of the CeCILL license and that you accept its terms

Example of AMR grid obtained during a high-resolution cosmological simulation. Each color corresponds to a given level of refinement. Only oct boundaries are shown for clarity.

The full package can also be downloaded here : ramses.tar.gz

This version is quite old (December 11th, 2011).

It includes the hydro and MHD solvers, all Fortran 90 source files, the code documentation and various post-processing utilities (IDL, python, C or F90).