Lagrange-flux schemes: reformulating second-order accurate Lagrange-remap schemes for better node-based HPC performance
For the CFD community, this work offers a new solver family with potential performance benefits, though it is an incremental redesign of existing methods.
The paper rethinks Lagrange-remap schemes for hydrodynamics to improve performance on modern HPC architectures, resulting in a new family of solvers called Lagrange-flux schemes that show promise for CFD.
In a previous paper, we have achieved the performance analysis of staggered Lagrange-remap schemes, a class of solvers widely used for Hydrodynamics applications. This paper is devoted to the rethinking and redesign of the Lagrange-remap process for achieving better performance using today's computing architectures. As an unintended outcome, the analysis has lead us to the discovery of a new family of solvers -- the so-called Lagrange-flux schemes -- that appear to be promising for the CFD community.