Reply To: Validating Lid-driven cavity with High RE number
The performance of the default laminar/cavity3d example case can be significantly improved for your usecase, e.g. you should reduce the VTK output to only what you need, remove the (slow) image output using the heatmap writer and so on. You can compare the optimized laminar/cavity3dBenchmark to get an upper bound on what you can expect using OpenLB on this GPU.
What execution mode do you use? (just to make sure that you are not e.g. using MPI+CUDA on a single GPU)