![fdtd code fdtd code](https://meep.readthedocs.io/en/latest/images/pml_glancing_field.png)
GPUs increases much more rapidly than for personal computers themselves, which is also promising. Generally, the available memory and computing power of Products (from historical reasons when this was the only graphics card that could be coded in C). Of commonly used graphical cards have increased by a large factor.
#FDTD CODE DRIVERS#
NVIDIA and ATI have developed drivers for running calculations on their cards, and both memory and processing power The capabilities of graphics cards for numerical modeling have increased dramatically over the last few years. To move the calculation from the computer processor (CPU) to the graphics processing unit (GPU) and to speed it up significantly,Īs shown for example on the following table (showing comparison between CPU and GPU for the same computation on different computional volume size) : Cube side This fact decreases the applicability of FDTD for many purposes.Īn alternative approach, that is used in Gsvit, is based on using a graphics processing unit (graphics card) There are someĪpproaches in the literature to overcome these limitations, which however lead to much more complicated algorithms thatĬannot be simply adapted to all of the large spectrum of FDTD calculations.Īs a result, both the capacity of computer memory and the processing speed is a limiting factor for large and Requires a spatial minimum of Δx ≤ λ/10, where λ is propagating electromagnetic wave wavelength.
![fdtd code fdtd code](https://ece.northeastern.edu/groups/rcl/projects/fdtd/space.jpg)
For the standard Yee's algorithm (that is a core of FDTD) the stable discretization In principle, the FDTD method is computationally limited by dense discretization that is necessary for its proper operation. On the other side, this method belongsĪlso to the most computationally demanding methods in the field of numerical analysis of electromagnetic waves, even in present when the computational resourcesĪre being developed and improved really extremely fast. Probably the most universal method for electromagnetic field modeling.
![fdtd code fdtd code](https://i.ytimg.com/vi/7S1Ft39uH10/hqdefault.jpg)
Of development this method can deal with nearly any material properties, sample and source geometries and is Starting with radio waves calculations many years ago, Solution of the Maxwell equations simulating wave propagation in a sequence of very short time steps. Of frequencies covering nearly all the topics in industry and science. Finite Difference in Time Domain method (FDTD) is a well known numerical electromagnetics method applicable to a broad range