Faster explicit elastic wavefield simulations are required for large and complex three-dimensional media using a structured finite element method. Such wavefield simulations are suitable for GPUs, which have exhibited improved computational performance in recent years, and the use of GPUs is expected to speed up such simulations. However, available computational performance on GPUs is typically not fully exploited, and the conventional method involves some numerical dispersion. Thus, in this paper, we propose an explicit structured-mesh wavefield simulation method that uses INT8 Tensor Cores and reduces numerical dispersion to speed up computation on GPUs. The proposed method was implemented for GPUs, and its performance was evaluated in a simulation experiment of a real-world problem. The results demonstrate that the proposed method is 17.0 times faster than the conventional method.

翻译：针对大规模复杂三维介质的结构化有限元显式弹性波场模拟，需要更快的计算速度。这类波场模拟适用于近年来计算性能显著提升的GPU，预期可加速此类模拟。然而，GPU的可用计算性能通常未被充分利用，且传统方法存在数值频散问题。为此，本文提出一种基于INT8张量核心的显式结构化网格波场模拟方法，通过降低数值频散来加速GPU计算。该方法已在GPU上实现，并通过实际问题的模拟实验评估其性能。结果表明，该方法比传统方法快17.0倍。