A Multi-GPU Accelerated Parallel Domain Decomposition One-Step Leapfrog ADI-FDTD

Liu, Shuo; Zou, Bin; Zhang, Haoyang; Ren, Shulei

doi:10.1109/lawp.2020.2981123

Cited by 27 publications

(9 citation statements)

References 32 publications

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“…More importantly, the parallelization of the process has become a fundamental tool for the acceleration of the FDTD calculation 24 – 26 Parallelization has shown successful results with dielectrics and plasmonic elements 27 …”

Section: Introductionmentioning

confidence: 99%

“…22,23 More importantly, the parallelization of the process has become a fundamental tool for the acceleration of the FDTD calculation. [24][25][26] Parallelization has shown successful results with dielectrics and plasmonic elements. 27 Here we present a strategy to numerically calculate multiple parameters simultaneously using parallelization.…”

Section: Introductionmentioning

confidence: 99%

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Parallel computing for modeling multilayer photonic crystals

et al. 2023

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A simulation framework is developed for the two-dimensional finite-difference time-domain to model multilayer photonic crystal structures. The framework includes the recording process in a photosensitive material through a coherent light source and then a subsequent interrogation with a broadband spectrum. Moreover, the tunable response of the photonic crystal is simulated for different film thicknesses (recorded from 5 to 20 μm), refractive indices contrast (ranging from 4% to 24%), film expansions (interrogated with expansions ranging 110% to 160%), and lattice spacings (recorded with wavelengths from 360 to 560 nm). A parallelization method was implemented in a computer cluster to alleviate the required high computational demand. Through this simulation framework, it is now possible to retrieve relevant information about realistic photosensitive multilayer structures. This method will support the design of multilayer structures utilized in sensors, lasers, and other functional nanostructured photonic devices.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Parallel computing for modeling multilayer photonic crystals

et al. 2023

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“…Full-wave EM methods, like finite-difference time-domain (FDTD) method, are common ways to perform EM scattering calculation. Nevertheless, this category of methods consumes a huge amount of computational time and memory, which may only suitable for simulation of small-sized targets [9]- [12]. High-frequency approximation methods are more appropriate to calculate the raw signal of SAR or PolSAR system, since they can be adapted to large and complex simulation scene [13], [14].…”

Section: Introductionmentioning

confidence: 99%

Scattering Mechanism Analysis of Man-Made Targets via Polarimetric SAR Observation Simulation

Zhang

Chen

Wang³

et al. 2022

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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Scattering mechanism analysis of a man-made target is critical for polarimetric synthetic aperture radar (PolSAR) image feature extraction and image interpretation. The most straightforward method for scattering mechanism investigation of man-made target is to analyze a huge amount of measured data under various conditions. However, the acquirement of measured data is extremely expensive and time consuming, coupled with its poor reusability, which makes the investigation inefficient and costly. The electromagnetic (EM) simulation is an effective and convenient way to obtain PolSAR data by solving equations describing the EM scattering from target of interest. It is adaptable to any observation condition, targets or environments, which have become a powerful tool commonly used for the study of EM scattering mechanism of target. In this paper, an efficient simulation framework for the emulation of PolSAR operation and imaging is proposed. This framework is based on ray tracing integrated with geometrical optics (GO), physical optics (PO) and Kirchhoff approximation (KA). The simulated image of a family car is in good agreement with the measured data of MiniSAR platform. Besides, images of T-72 tank under various observation conditions, radar parameters and terrains are simulated. Freeman decomposition is employed and scattering component percentages of target under different conditions are presented to analyze the scattering mechanism in detail.  Index Terms-Man-made targets, ray tracing, PolSAR image simulation, scattering mechanism > REPLACE THIS LINE WITH YOUR PAPER IDENTIFICATION NUMBER (DOUBLE-CLICK HERE TO EDIT) < Lamei Zhang (M'07, SM'19) received the B.S., M.Sc., and Ph.D. degrees in information and communication engineering from the

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“…For parallel computing, in paper [13], multiple GPUs are used to accelerate alternating-directionimplicit FDTD (ADI-FDTD) method based on domain decomposition technique, which, however, requires high-performance computers and brings high hardware cost. The implicit updating equations of the FDTD method in [14] could be solved simultaneously by multithreading, which can effectively speed up the solution process.…”

Section: Introductionmentioning

confidence: 99%

A Fast Prediction Method for the Radio Propagation under the Obstacle Environment

Ma¹,

Wen²,

Zhang³

et al. 2022

PIER C

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To rapidly simulate the forward electromagnetic scattering of multiple obstacles, we propose a new forward scattering prediction model, which can effectively simulate the propagation of electromagnetic waves in a large-scale environment, accurately calculate the scattering of multi-scale structures, and realize multi-region parallel computation. Specifically, the proposed model consists of an obstacle region and a large-scale environment region. To make the model consistent with the real scene quickly and accurately, the time-domain parabolic equation (TDPE) and discontinuous Galerkin time-domain (DGTD) method are employed to simulate the propagation of electromagnetic waves and the scattering of obstacles, respectively. At the same time, each region is equivalent to a linear timeinvariant (LTI) system, and the transfer function of each system is calculated by the discrete Laplace Z-transform to realize multi-region parallel computation. This model can simulate the propagation of the electromagnetic wave in multiple obstacles more quickly under large-scale background than the existing obstacle forward scattering model. Numerical results demonstrate that the proposed model is effective in terms of accuracy and runtime performance.

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A Multi-GPU Accelerated Parallel Domain Decomposition One-Step Leapfrog ADI-FDTD

Cited by 27 publications

References 32 publications

Parallel computing for modeling multilayer photonic crystals

Parallel computing for modeling multilayer photonic crystals

Scattering Mechanism Analysis of Man-Made Targets via Polarimetric SAR Observation Simulation

A Fast Prediction Method for the Radio Propagation under the Obstacle Environment

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