/[escript]/trunk/paso/src/SystemMatrix_nullifyRows.c
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Contents of /trunk/paso/src/SystemMatrix_nullifyRows.c

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Revision 1552 - (show annotations)
Thu May 8 08:52:41 2008 UTC (11 years, 6 months ago) by gross
File MIME type: text/plain
File size: 2877 byte(s)
some changes to make the implementatiopn of a upwind MPI version easier
1
2 /* $Id$ */
3
4 /*******************************************************
5 *
6 * Copyright 2008 by University of Queensland
7 *
8 * http://esscc.uq.edu.au
9 * Primary Business: Queensland, Australia
10 * Licensed under the Open Software License version 3.0
11 * http://www.opensource.org/licenses/osl-3.0.php
12 *
13 *******************************************************/
14
15 /**************************************************************/
16
17 /* Paso: SystemMatrix */
18
19 /* nullify rows in the matrix */
20
21 /* the rows are marked by positive values in */
22 /* mask_row. Values on the main diagonal */
23 /* which are marked to set to zero by both mask_row */
24 /* are set to main_diagonal_value */
25
26
27 /**************************************************************/
28
29 /* Author: l.gross@uq.edu.au */
30
31 /**************************************************************/
32
33 #include "Paso.h"
34 #include "SystemMatrix.h"
35
36 void Paso_SystemMatrix_nullifyRows(Paso_SystemMatrix* A, double* mask_row, double main_diagonal_value) {
37
38 double* remote_values;
39 Paso_MPIInfo *mpi_info=A->mpi_info;
40 if (A ->col_block_size==1 && A ->row_block_size ==1) {
41 if (A->type & MATRIX_FORMAT_CSC) {
42 Paso_setError(SYSTEM_ERROR,"Paso_SystemMatrix_nullifyRows: CSC is not supported by MPI.");
43 return;
44 } else if (A->type & MATRIX_FORMAT_TRILINOS_CRS) {
45 Paso_setError(SYSTEM_ERROR,"Paso_SystemMatrix_nullifyRows: TRILINOS is not supported with MPI.");
46 return;
47 } else {
48 if (Paso_noError()) {
49 Paso_SystemMatrix_startRowCollect(A,mask_row);
50 Paso_SparseMatrix_nullifyRows_CSR_BLK1(A->mainBlock,mask_row,main_diagonal_value);
51 Paso_SparseMatrix_nullifyRows_CSR_BLK1(A->col_coupleBlock,mask_row,0.);
52 remote_values=Paso_SystemMatrix_finishRowCollect(A);
53 Paso_SparseMatrix_nullifyRows_CSR_BLK1(A->row_coupleBlock,remote_values,0.);
54 }
55 }
56 } else {
57 if (A->type & MATRIX_FORMAT_CSC) {
58 Paso_setError(SYSTEM_ERROR,"Paso_SystemMatrix_nullifyRows: CSC is not supported by MPI.");
59 return;
60 } else if (A->type & MATRIX_FORMAT_TRILINOS_CRS) {
61 Paso_setError(SYSTEM_ERROR,"Paso_SystemMatrix_nullifyRows: TRILINOS is not supported with MPI.");
62 return;
63 } else {
64 if (Paso_noError()) {
65 Paso_SystemMatrix_startRowCollect(A,mask_row);
66 Paso_SparseMatrix_nullifyRows_CSR(A->mainBlock,mask_row,main_diagonal_value);
67 Paso_SparseMatrix_nullifyRows_CSR(A->col_coupleBlock,mask_row,0.);
68 remote_values=Paso_SystemMatrix_finishRowCollect(A);
69 Paso_SparseMatrix_nullifyRows_CSR(A->row_coupleBlock,remote_values,0.);
70 }
71 }
72 }
73 return;
74 }

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