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首页> 外文会议>Proceedings of the 1995 ACM/IEEE supercomputing conference >A Parallel Incompressible Flow Solver Package with a Parallel Multigrid Elliptic Kernel
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A Parallel Incompressible Flow Solver Package with a Parallel Multigrid Elliptic Kernel

机译：具有并行Multigrid椭圆核的并行不可压缩流求解器软件包

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摘要

A parallel time-dependent incompressible flow solver and a parallel multigrid elliptic kernel are described. The flow solver is based on a second-order projection method applied to a staggered finite-difference grid. The multigrid algorithms implemented in the elliptic kernel, which is needed by the flow solver, are V-cycle and full V-cycle schemes. A grid-partition strategy is used in the parallel implementations of both the flow solver and the multigrid elliptic ker- nel on all fine and coarse grids. Numerical experiments and parallel performance tests show the parallel solver package is numerically stable, physically robust and computationally efficient. Both the mul- tigrid elliptic kernel and the flow solver scale very well to a large number of processors on the Intel Paragon and the Cray T3D for computations with moderate granularity. The solver package has been carefully designed and coded so that it can be easily adapted to solving a variety of interesting two and three-dimensional flow problems. The solver package is portable to parallel systems that support MPI, PVM and Intel NX for interprocessor communications.
机译：描述了一个与时间相关的不可压缩并行流解程序和一个并行多网格椭圆核。流动求解器基于应用于交错有限差分网格的二阶投影方法。流量求解器需要在椭圆形内核中实现的多网格算法是V循环和完整V循环方案。在所有细网格和粗网格上，流求解器和多网格椭圆核的并行实现中都使用了网格划分策略。数值实验和并行性能测试表明，并行求解器软件包在数值上稳定，物理鲁棒并且计算效率高。无论是多椭圆形内核还是流求解器，都可以很好地扩展到Intel Paragon和Cray T3D上的大量处理器，以进行中等粒度的计算。求解器程序包经过精心设计和编码，因此可以轻松地应用于解决各种有趣的二维和三维流动问题。该求解程序包可移植到支持MPI，PVM和Intel NX进行处理器间通信的并行系统。

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