GPU-accelerated mixed precision algebraic multigrid preconditioners for discrete elliptic field problems

GPU-accelerated mixed precision algebraic multigrid preconditioners for discrete elliptic field problems
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用于离散椭圆场问题的 GPU 加速混合精度代数多重网格预处理器

DOI:
10.1049/cp.2014.0185
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发表时间:
2014
期刊:
影响因子:
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通讯作者:
M. Clemens
M. Clemens
中科院分区:
--
文献类型:
--
作者:
C. Richter;S. Schöps;M. Clemens

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本文提出了一种混合精度实现的克雷洛夫子空间方法和多网格预条件,用于求解大型线性系统,这些系统是由有限元或有限差分法离散化的椭圆问题引起的,例如在静电学中。通过一个大型三维高压隔离器模型的数值算例,讨论了在速度和内存方面的计算限制。
In this paper the use of a mixed precision implementation of Krylov subspace methods with multigrid preconditioners is proposed for solving the large linear systems stemming from Finite Element or Finite Difference method discretizations of elliptic problems as they occur e.g. in electrostatics. The computational limits in speed and memory are discussed using the numerical example of a large scale 3D high voltage isolator model.