Ramses is an open source code to model astrophysical systems. It describes self-gravitating, magnetised, compressible, radiative fluid flows with Adaptive Mesh Refinement (AMR), and has been widely used for cosmological simulations of the Universe, isolated as well as cosmological resimulations of individual galaxies, simulations of molecular clouds, star formation, supernovae remnants, accretion disks around black holes and planets. Ramses was written by Romain Teyssier, and is now used and developed by a growing community of astrophysicists all around the world, with many groups in France, United Kingdom, Danemark, South Korea and the United States.

The goal of this website is to promote the activities of the Ramses community in France and internationally. It is edited by the RAMSES SNO (see this page for more details about this structure).


Events

May 12, 2025

RUM 2025
Strasbourg

May 12, 2025
November 3, 2025

RAMSES Dev School
(Lyon)

November 3, 2025
November 15, 2025

RAMSES Users School
(Paris, Date TBD)

November 15, 2025

News

  • Internal Training : tips and tricks to navigate in HPC environments

    Internal Training : tips and tricks to navigate in HPC environments

    The SNO is happy to announce a second Internal Training online event which will cover basic notions to work in an HPC environment. Specifically, Fabrice Roy (from Paris Observatory) will cover the following topics: The event will be online on December 11, 2024, at 10am CET. (Zoom link posted on slack).

Projects

  • Space: Codes for Exascale

    Space: Codes for Exascale

    Ramses is part of the SPACE program, which aims to foster the reuse and sharing of algorithms and software components in the A&C application domain, addressing this action through co-design activities that bring together scientists, code developers, HPC experts, HW manufacturers and SW developers, advancing lighthouse exascale A&C applications, codes, services and know-how promoting the…