The equilibrium state of the DW is determined by the minimum total energy (exchange, anisotropy, magnetostatic, and Zeeman energies). The structure Neel domain walls is described a narrow central region (core) with a width being less than 100 nm and two lateral regions symmetrically located relative to the core, with a width on the order of the hundreds microns. The calculations were carried out using a supercomputer with the CUDA architecture using the CUDA C programming language.