Techniques used to implement an unstructured grid solver on modern graphics hardware are described. The three-dimensional Euler equations for inviscid, compressible flow are considered. Effective memory bandwidth is improved by reducing total global memory access and overlapping redundant computation, as well as using an appropriate numbering scheme and data layout. The applicability of per-block shared memory is also considered. The performance of the solver is demonstrated on two benchmark cases: a missile and the NACA0012 wing. For a variety of mesh sizes, an average speed-up factor of roughly 9.5x is observed over the equivalent parallelized OpenMP-code running on a quad-core CPU, and roughly 33x over the equivalent code running in serial.
In REF , techniques to implement an unstructured mesh inviscid flow solver on GPUs are described.
Running Unstructured Grid Based CFD Solvers on Modern Graphics Hardware
19th AIAA Computational Fluid Dynamics
19th AIAA Computational Fluid Dynamics
Computer Science