Reply To: stl units and format
The issue here is that the material geometry is malformed s.t. the slip boundary can not obtain a discrete normal. This will likely be visible if you take a look at it in e.g. Paraview.
500 million cells can be too large a problem for a single GPU (but higher end workstation GPUs will be able to fit it). We also talked about this before, atanuchaudhury.