Internally funded project
Acronym: HHG
Start date : 01.01.2006
HHG is a multigrid solver for finite elements on unstructured grids. The program takes a coarse input grid and refines it in a structured way. The resulting regular grid structure can be exploited using extremely memory-efficient data structures. This puts simulations of impressive scale into the realms of possibility. On HLRB II at the Leibniz Computing Centre Munich, a linear system of equations with 300 billion unknowns has been solved using 9170 processors.