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A Low-Communication FDFD Solver for Distributed Parallel Electromagnetic Simulation
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DOI：10.1109/tap.2026.3688972.png)
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Abstract
En 中文
This article presents a low-communication finite-difference frequency-domain (LC-FDFD) solver for distributed parallel simulation of large-scale 3-D scattering problems. We propose a customized matrix reordering scheme that preserves spatial locality of field components and transforms the FDFD system into a compact banded structure. Based on the reordering scheme, a hybrid iterative-direct solver based on the SPIKE algorithm is proposed to partition the global system into independent subproblems solvable in parallel across multiple graphics processing units (GPUs) in a distributed cluster. When solving reordered FDFD systems with wide bandwidth and in-band sparsity, the proposed method avoids explicit spike matrix construction by using a matrix-free technique, thereby significantly reducing both computational cost and memory requirements. Several numerical experiments are presented, whose results show excellent efficiency and scalability for large-scale electromagnetic simulations.
Keywords:
Banded system
finite-difference frequency domain (FDFD)
matrix decomposition
parallel computing
scattering
Journal
IF:
5.8
Papers:
502
Citations:
6.8W