Parallel Newton Methods for Sparse Systems of Nonlinear Equations

نویسنده

  • GIOVANNI ZILLI
چکیده

In this paper we give the results found in solving consistent sparse systems of nonlinear equations by an inexact Newton and Quasi-Newton method both combined with a block iterative row-projection linear solver of Cimmino-type. A simple partitioning of the Jacobian matrix was used for solving two nonlinear test problems, that is a tridiagonal problem of size n = 131072 and a nonlinear Poisson problem with n = l l grid with l up to 64. The results are obtained on the CRAY T3E installed at CINECA (Bologna, Italy) with 32 nodes. The Fortran code runs under MPI implementation.

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تاریخ انتشار 1999