*.gn
出自 DDCC TCAD TOOL Manual
Format
Nx Ny Nz dt // Nx, Ny, and Nz are integers, but dt is floating-point.
This file outputs the final number nodes in each direction.
Example
101 101 121 1.00000E-14
It means there are 101 nodes in x and y direction, and 121 nodes in z direction, and dt is 1e-14 (s).