Development and Performance Evaluation of Parallel Algorithms for Synthetic Seismograms

合成地震图并行算法的开发和性能评估

• 批准号: 8812147
• 负责人: Rosemary Renaut
• 金额: $ 10.2万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-10-01 至 1991-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8812147&HistoricalAwards=false
• 关键词: Development; Performance; Evaluation; Parallel; Algorithms

This project will develop parallel algorithms for the description of problems in wave propagation. A series of models based on the two-dimensional wave equation will be considered. These are: i) the simplest representation of wave motion, as described by the acoustic wave equation ii) wave propagation described by the homogeneous formulation of the spatial displacements, and iii) the corresponding heterogeneous formulation for spatial displacement. Geometrically complex subsurface models can be investigated by the latter formulation. In each case parallel algorithms based on finite difference approximations will be implemented. The artificial boundaries to the physical domain can be replaced by a damping boundary layer or numerically absorbing boundaries. The accuracy and efficiency of the algorithms will be compared with their serial counterparts. Additionally, the pseudospectral method, which may be supposed to have greater accuracy, will be implemented for each of these models. Its accuracy and efficiency will be compared with the finite difference solutions.

这个项目将开发并行算法的描述 波传播的问题。 一系列基于 将考虑二维波动方程。 这些是： （1）最简单的波动表示，如所述 根据声波方程 ii）波传播由均匀 空间位移公式，以及 iii）对应的空间异构公式 位移 几何复杂的地下模型可以通过以下方式进行研究： 后一种配方。 在每种情况下，基于有限差分的并行算法 将进行近似计算。 人为的界限， 物理区域可以用阻尼边界层代替 或数值吸收边界。 精度及效率 的算法将与他们的串行 同行 此外，伪谱方法，这可能是假设， 更准确，将为每一个 模型 它的准确性和效率将与 有限差分解