How to run Python 3.9 vtk9.2.6 without a GPU

python3.9.16 vtk9.2.6 centos 7

Hi guys, if there is no GPU, only a high-performance CPU and high-performance NPU, how can I meet my need to smoothly read a model file of around 50m? Currently, the scenario of using only CPU to read is too slow, and NPU has not found a method to support opengl.