| |
| //@HEADER |
| // ************************************************************************ |
| // |
| // HPCCG: Simple Conjugate Gradient Benchmark Code |
| // Copyright (2006) Sandia Corporation |
| // |
| // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive |
| // license for use of this work by or on behalf of the U.S. Government. |
| // |
| // This library is free software; you can redistribute it and/or modify |
| // it under the terms of the GNU Lesser General Public License as |
| // published by the Free Software Foundation; either version 2.1 of the |
| // License, or (at your option) any later version. |
| // |
| // This library is distributed in the hope that it will be useful, but |
| // WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| // Lesser General Public License for more details. |
| // |
| // You should have received a copy of the GNU Lesser General Public |
| // License along with this library; if not, write to the Free Software |
| // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
| // USA |
| // Questions? Contact Michael A. Heroux (maherou@sandia.gov) |
| // |
| // ************************************************************************ |
| //@HEADER |
| |
| ///////////////////////////////////////////////////////////////////////// |
| |
| // Routine to dump matrix in row, col, val format for analysis with Matlab |
| // Writes to mat.dat |
| // NOTE: THIS CODE ONLY WORKS ON SINGLE PROCESSOR RUNS |
| // Read into matlab using: |
| // load mat.dat |
| // A=spconvert(mat); |
| |
| // A - known matrix |
| |
| ///////////////////////////////////////////////////////////////////////// |
| |
| #include <cstdio> |
| #include "dump_matlab_matrix.hpp" |
| |
| int dump_matlab_matrix( HPC_Sparse_Matrix *A, int rank) { |
| const int nrow = A->local_nrow; |
| int start_row = nrow*rank; // Each processor gets a section of a chimney stack domain |
| |
| FILE * handle = 0; |
| if (rank==0) |
| handle = fopen("mat0.dat", "w"); |
| else if (rank==1) |
| handle = fopen("mat1.dat", "w"); |
| else if (rank==2) |
| handle = fopen("mat2.dat", "w"); |
| else if (rank==3) |
| handle = fopen("mat3.dat", "w"); |
| else return(0); |
| |
| for (int i=0; i< nrow; i++) { |
| const double * const cur_vals = A->ptr_to_vals_in_row[i]; |
| const int * const cur_inds = A->ptr_to_inds_in_row[i]; |
| const int cur_nnz = A->nnz_in_row[i]; |
| for (int j=0; j< cur_nnz; j++) fprintf(handle, " %d %d %22.16e\n",start_row+i+1,cur_inds[j]+1,cur_vals[j]); |
| } |
| |
| fclose(handle); |
| return(0); |
| } |
