Welcome to the semi-public GRAMSES Gitlab repository.

GRAMSES is a modified version of the original RAMSES code which implements GR equations for N-body cosmological simulations (DM only). It features a fully constrained and non-linear 3+1 formulation of GR in which 10 elliptic equations are solved to get the scalar and vector modes of the gravitational field.

For details about the code implementation and background check the main GRAMSES paper.

Details about the generation of initial conditions compatible with the code can be found in the second GRAMSES paper.

Download the code by cloning the git repository using

$ git clone https://gitlab.cosma.dur.ac.uk/dc-barr3/gramses_semi_public.git

RAMSES is an open source code written by Romain Teyssier to model astrophysical systems, featuring self-gravitating, magnetised, compressible, radiative fluid flows. It is based on the Adaptive Mesh Refinement (AMR) technique on a fully-threaded graded octree. The code is written in Fortran 90 and makes intensive use of the Message Passing Interface (MPI) library.