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Acceleration of LOD-FDTD Method Using Fundamental Scheme on Graphics Processor Units

Eng Leong Tan
School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapour
IEEE Microwave and Wireless Components Letters, 2010, vol. 20, no 12, pp. 648-650

@article{tan2010acceleration,

   title={Acceleration of LOD-FDTD Method Using Fundamental Scheme on Graphics Processor Units},

   author={Tan, E.L.},

   journal={Microwave and Wireless Components Letters, IEEE},

   volume={20},

   number={12},

   pages={648–650},

   year={2010},

   publisher={IEEE}

}

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This letter presents the acceleration of locally one-dimensional finite-difference time-domain (LOD-FDTD) method using fundamental scheme on graphics processor units (GPUs). Compared to the conventional scheme, the fundamental LOD-FDTD (denoted as FLOD-FDTD) scheme has its right-hand sides cast in the simplest form without involving matrix operators. This leads to a substantial reduction in floating-point operations as well as field and coefficient memory access. To reap further advantages of FLOD-FDTD, certain field updates are embedded in the implicit solutions while exploiting the reuse of field data. Using FLOD-FDTD, it is found that significant speed-up is achievable for the method on GPUs.
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