I would like to write heavy mesh data (GBs) with VTK and view it in ParaView. Could I have some recommendations on what data structure I should use in VTK to manipulate the data? I have tried unstructured grid, but writing in .vtu file is not very efficient in ASCII and binary (binary is even worse).
By the way, I would like to add some attributes to each mesh triangle to illustrate some physical materials.
Thanks for any help in advance!