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Parallelization of a Block Tridiagonal Solver in HPF on an IBM SP2

机译:IBM SP2上HPF中的块三对角线求解器的并行化

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The aim of this article is to describe how an existing FORTRAN-code for the solution of block tridiagonal systems of linear equations can be parallelized by using High Performance Fortran (HPF). The algorithm we consider in this paper, consists of a complete LU decomposition. In order to obtain a well-parallelizable algorithm, a simultaneous reordering of both rows and columns of the coefficient matrix is performed before the LU decomposition is constructed. Numerical results obtained on an IBM SP2 using the xlhpf-compiler will be compared with numerical results obtained on a Cray T3D.
机译:本文的目的是描述如何通过使用高性能Fortran(HPF)并行化用于线性方程组的三对角线方程组解的现有FORTRAN代码。我们在本文中考虑的算法包括一个完整的LU分解。为了获得可很好并行化的算法,在构造LU分解之前,要同时对系数矩阵的行和列进行重新排序。使用xlhpf-compiler在IBM SP2上获得的数值结果将与在Cray T3D上获得的数值结果进行比较。

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