并行半隐式时间积分器
Parallel Semi-Implicit Time Integrators
AI总结:
本文进一步发展了修订积分延迟校正方法(RIDC)系列并行时间积分器,实现半隐式求解时间相关偏微分方程,并利用多GPU和CUBLAS库加速计算,在四GPU四CPU上达到四阶解与单GPU单CPU一阶解相近的墙钟时间。
摘要:
在本文中,我们进一步发展了一类称为修订积分延迟校正方法(RIDC)的并行时间积分器,以允许半隐式求解时间相关偏微分方程。此外,我们展示了我们的半隐式RIDC算法可以通过在实现中利用现有的CUBLAS库进行矩阵线性代数例程,从而在单个节点上利用多个通用图形处理单元(GPU)的计算潜力。在数值实验中,我们展示了我们的实现使用四个GPU和四个CPU计算四阶解所需的墙钟时间与使用单个GPU和单个CPU计算一阶解所需的时间大致相同。
英文摘要:
In this paper, we further develop a family of parallel time integrators known as Revisionist Integral Deferred Correction methods (RIDC) to allow for the semi-implicit solution of time dependent PDEs. Additionally, we show that our semi-implicit RIDC algorithm can harness the computational potential of multiple general purpose graphical processing units (GPUs) in a single node by utilizing existing CUBLAS libraries for matrix linear algebra routines in our implementation. In the numerical experiments, we show that our implementation computes a fourth order solution using four GPUs and four CPUs in approximately the same wall clock time as a first order solution computed using a single GPU and a single CPU.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。