  The primary goal of the EuroHPC JU project SCALABLE is to develop an
industrial Lattice Boltzmann Method (LBM)-based computational fluid dynamics
(CFD) solver capable of exploiting current and future extreme scale
architectures, expanding current capabilities of existing industrial LBM
solvers by at least two orders of magnitude in terms of processor cores and
lattice cells, while preserving its accessibility from both the end-user and
software developer's point of view. This is accomplished by transferring
technology and knowledge between an academic code (waLBerla) and an industrial
code (LaBS). This paper briefly introduces the characteristics and main
features of both software packages involved in the process. We also highlight
some of the performance achievements in scales of up to tens of thousand of
cores presented on one academic and one industrial benchmark case.
