OpenSBLI: Automated code-generation for heterogeneous computing architectures applied to compressible fluid dynamics on structured grids

OpenSBLI is an open-source code-generation system for compressible fluid dynamics (CFD) on heterogeneous computing architectures. Written in Python, explicit high-order finite-difference solver structured curvilinear meshes. Shock-capturing performed by a choice of Weighted Essentially Non-Oscillatory (WENO) or Targeted (TENO) schemes. generates complete CFD the Oxford Parallel Structured (OPS) domain specific language. The OPS library embedded C code, enabling massively-parallel execution code variety high-performance-computing architectures, including GPUs. present paper presents base that has been completely rewritten from earlier proof concept (Jacobs et al, JoCS 18 (2017), 12-23), allowing shock capturing, coordinate transformations complex geometries, and wide range boundary conditions, solid walls with without heat transfer. A suite validation verification cases are presented, plus demonstration large-scale Direct Numerical Simulation (DNS) transitional Shockwave Boundary Layer Interaction (SBLI). shown to have good weak strong scaling multi-GPU clusters. We demonstrate languages suitable performing efficient simulations flows emerging