Seven-League Hydro Code – SLH

A code for multidimensional simulations of hydrodynamics in stellar evolution.

Code Features


Using hybrid parallelization (MPI and OpenMP), SLH works on the largest supercomputers. It was optimized to scale up to half a million cores in extreme scaling workshops at Leibniz-Rechenzentrum Garching and at Forschungszentrum Jülich.

good scaling of SLH code on JUQUEEN
Scaling Plot of SLH on supercomputer JUQUEEN at Forschungszentrum Jülich.

Curvilinear Grid

SLH can work with arbitrary curvilinear meshes, using a rectangular computational mesh. This keeps the code almost as simple as if using a Cartesian mesh, while having the flexibility to adapt the code to the geometry of the problem.

logically rectangular mesh deformed to almost spherical
A suggestion by Calhoun et al. (2008) for a curvilinear mesh, which is close to spherical without the singularites of curvilinear coordinates.