Benchmark test of accelerated multi-slice simulation by GPGPU

A fast multi-slice image simulation by parallelized computation using a graphics processing unit (CPU) has been developed. The image simulation contains multiple sets of computing steps, such as Fourier transform and pixel-to-pixel operation. The efficiency of CPU varies depending on the type of calculation. In the effective case of utilizing CPU, the calculation speed is conducted hundreds of times faster than a central processing unit (CPU). The benchmark test of parallelized multi-slice was performed, and the results of contents, such as TEM imaging, STEM imaging and CBD calculation are reported. Some features of the simulation software are also introduced. (C) 2015 Elsevier B.V. All rights reserved,