GPU-accelerated DGTD method based on automatic batch processing technique to solve large-size electromagnetic scattering problem

In this paper, we propose a GPU-accelerated discontinuous Galerkin time-domain (DGTD) method based on an automatic batch data processing technique to solve the large-scale electromagnetic scattering problem. The memory of the graphics card limits the size of the computation, so automatic batch data processing techniques are proposed to divide the computational domain and compute the computational region in batches. The reliability and efficiency of the method are verified by a numerical example.