Scalability of an in-house Large Eddy Simulation solver

The project is aimed at demonstrating the scalability of an in-house academic Large-Eddy Simulation Fortran solver on different architectures, in order to provide evidence of its portability. It utilizes finite-differences to discretize the filtered Navier-Stokes equations. An immersed-boundary methodology enables the use of regular grids, as Cartesian or cylindrical, making the decomposition of the overall flow problem into subdomains very straightforward and efficient for parallelization purposes. In particular, the computational grid we will consider in this project is a cylindrical one, composed of about 5 billion points. Although the scalability of the present solver was already tested on several architectures, the test-case that will be utilized in the framework of this Preparatory Access project was specifically designed to be representative of the computational effort of the problem we want to tackle in the framework of the 23rd PRACE Call for Project Access. Results of these tests will be included in the proposal we are going to submit for Project Access.