In SCALABLE, eminent industrials and academic partners will team up to improve the performance, scalability, and energy efficiency of an industrial LBM-based computational fluid dynamics (CFD) software.
Lattice Boltzmann methods (LBM) have already evolved to become trustworthy alternatives to conventional CFD. In several engineering applications, they are shown to be roughly an order of magnitude faster than Navier-Stokes approaches in a fair comparison and in comparable scenarios.
In the context of EuroHPC, LBM is especially well suited to exploit advanced supercomputer architectures through vectorization, accelerators, and massive parallelization.
In the public domain research code waLBerla, superb performance and outstanding scalability have been demonstrated, reaching more than a trillion (1012) lattice cells already on Petascale systems. WaLBerla performance excels because of its uncompromising unique, architecture-specific automatic generation of optimized compute kernels, together with carefully designed parallel data structures. However, is not compliant with industrial applications due to lack of a geometry engine and user-friendliness for non-HPC experts.
On the other hand, the industrial CFD software LaBS already has such industrial capabilities at a proven high level of maturity, but it still has a performance worthy of improvement.
SCALABLE will make the most of these two existing CFD tools (waLBerla and LaBS, the ProLB software) notably by transferring cutting-edge technology and aiming to break down the silos between the scientific computing world and that of physical flow modelling in order to deliver improved efficiency and scalability for the upcoming European Exascale systems.