/[escript]/trunk/paso/src/SystemMatrix.c
ViewVC logotype

Contents of /trunk/paso/src/SystemMatrix.c

Parent Directory Parent Directory | Revision Log Revision Log


Revision 633 - (show annotations)
Thu Mar 23 05:37:00 2006 UTC (13 years, 5 months ago) by dhawcroft
File MIME type: text/plain
File size: 7083 byte(s)


1 /* $Id$ */
2
3
4 /*
5 ********************************************************************************
6 * Copyright 2006 by ACcESS MNRF *
7 * *
8 * http://www.access.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 /**************************************************************/
20
21 /* Copyrights by ACcESS Australia 2003, 2004,2005 */
22 /* Author: gross@access.edu.au */
23
24 /**************************************************************/
25
26 #include "Paso.h"
27 #include "SystemMatrix.h"
28
29 /**************************************************************/
30
31 /* allocates a SystemMatrix of type type using the given matrix pattern
32 if type is UNKOWN CSR is used.
33 if CSC or CSC_BLK1 is used pattern has to give the CSC pattern.
34 if CSR or CSR_BLK1 is used pattern has to give the CSR pattern.
35 Values are initialized by zero. */
36
37 Paso_SystemMatrix* Paso_SystemMatrix_alloc(Paso_SystemMatrixType type,Paso_SystemMatrixPattern *pattern, int row_block_size, int col_block_size) {
38
39 double time0;
40 Paso_SystemMatrix*out=NULL;
41 Paso_resetError();
42 time0=Paso_timer();
43 dim_t n_norm,i;
44 out=MEMALLOC(1,Paso_SystemMatrix);
45 if (! Paso_checkPtr(out)) {
46 out->pattern=NULL;
47 out->solver_package=PASO_PASO;
48 out->solver=NULL;
49 out->val=NULL;
50 out->reference_counter=1;
51 out->type=type;
52 if (type & MATRIX_FORMAT_CSC) {
53 if (type & MATRIX_FORMAT_SYM) {
54 Paso_setError(TYPE_ERROR,"Generation of matrix pattern for symmetric CSC is not implemented yet.");
55 return NULL;
56 } else {
57 if ((type & MATRIX_FORMAT_BLK1) || row_block_size!=col_block_size || col_block_size>3) {
58 if (type & MATRIX_FORMAT_OFFSET1) {
59 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,PATTERN_FORMAT_OFFSET1,col_block_size,row_block_size);
60 } else {
61 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,PATTERN_FORMAT_DEFAULT,col_block_size,row_block_size);
62 }
63 out->row_block_size=1;
64 out->col_block_size=1;
65 } else {
66 if ( (type & MATRIX_FORMAT_OFFSET1) ==(pattern->type & PATTERN_FORMAT_OFFSET1)) {
67 out->pattern=Paso_SystemMatrixPattern_reference(pattern);
68 } else {
69 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,(type & MATRIX_FORMAT_OFFSET1)? PATTERN_FORMAT_OFFSET1: PATTERN_FORMAT_DEFAULT,1,1);
70 }
71 out->row_block_size=row_block_size;
72 out->col_block_size=col_block_size;
73 }
74 }
75 out->num_rows=out->pattern->n_index;
76 out->num_cols=out->pattern->n_ptr;
77 n_norm = out->num_cols * out->col_block_size;
78 } else {
79 if (type & MATRIX_FORMAT_SYM) {
80 Paso_setError(TYPE_ERROR,"Generation of matrix pattern for symmetric CSR is not implemented yet.");
81 return NULL;
82 } else {
83 if ((type & MATRIX_FORMAT_BLK1) || row_block_size!=col_block_size || col_block_size>3) {
84 if (type & MATRIX_FORMAT_OFFSET1) {
85 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,PATTERN_FORMAT_OFFSET1,row_block_size,col_block_size);
86 } else {
87 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,PATTERN_FORMAT_DEFAULT,row_block_size,col_block_size);
88 }
89 out->row_block_size=1;
90 out->col_block_size=1;
91 } else {
92 if ((type & MATRIX_FORMAT_OFFSET1)==(pattern->type & PATTERN_FORMAT_OFFSET1)) {
93 out->pattern=Paso_SystemMatrixPattern_reference(pattern);
94 } else {
95 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,(type & MATRIX_FORMAT_OFFSET1)? PATTERN_FORMAT_OFFSET1: PATTERN_FORMAT_DEFAULT,1,1);
96 }
97 out->row_block_size=row_block_size;
98 out->col_block_size=col_block_size;
99 }
100 }
101 out->num_rows=out->pattern->n_index;
102 out->num_cols=out->pattern->n_ptr;
103 n_norm = out->num_cols * out->col_block_size;
104 out->num_rows=out->pattern->n_ptr;
105 out->num_cols=out->pattern->n_index;
106 n_norm = out->num_rows * out->row_block_size;
107 }
108 out->logical_row_block_size=row_block_size;
109 out->logical_col_block_size=col_block_size;
110 out->logical_block_size=out->logical_row_block_size*out->logical_block_size;
111 out->block_size=out->row_block_size*out->col_block_size;
112 out->len=(size_t)(out->pattern->len)*(size_t)(out->block_size);
113 /* allocate memory for matrix entries */
114 out->val=MEMALLOC(out->len,double);
115 out->normalizer=MEMALLOC(n_norm,double);
116 out->normalizer_is_valid=FALSE;
117 if (! Paso_checkPtr(out->val)) {
118 Paso_SystemMatrix_setValues(out,DBLE(0));
119 }
120 if (! Paso_checkPtr(out->normalizer)) {
121 #pragma omp parallel for private(i) schedule(static)
122 for (i=0;i<n_norm;++i) out->normalizer[i]=0.;
123 }
124 }
125 /* all done: */
126 if (! Paso_noError()) {
127 Paso_SystemMatrix_dealloc(out);
128 return NULL;
129 } else {
130 #ifdef Paso_TRACE
131 printf("timing: system matrix %.4e sec\n",Paso_timer()-time0);
132 printf("Paso_SystemMatrix_alloc: %ld x %ld system matrix has been allocated.\n",(long)out->num_rows,(long)out->num_cols);
133 #endif
134 return out;
135 }
136 }
137
138 /* returns a reference to Paso_SystemMatrix in */
139
140 Paso_SystemMatrix* Paso_SystemMatrix_reference(Paso_SystemMatrix* in) {
141 if (in!=NULL) ++(in->reference_counter);
142 return NULL;
143 }
144
145 /* deallocates a SystemMatrix: */
146
147 void Paso_SystemMatrix_dealloc(Paso_SystemMatrix* in) {
148 if (in!=NULL) {
149 in->reference_counter--;
150 if (in->reference_counter<=0) {
151 MEMFREE(in->val);
152 MEMFREE(in->normalizer);
153 Paso_SystemMatrixPattern_dealloc(in->pattern);
154 Paso_solve_free(in);
155 MEMFREE(in);
156 #ifdef Paso_TRACE
157 printf("Paso_SystemMatrix_dealloc: system matrix as been deallocated.\n");
158 #endif
159 }
160 }
161 }
162 /*
163 * $Log$
164 * Revision 1.2 2005/09/15 03:44:38 jgs
165 * Merge of development branch dev-02 back to main trunk on 2005-09-15
166 *
167 * Revision 1.1.2.2 2005/09/07 00:59:08 gross
168 * some inconsistent renaming fixed to make the linking work.
169 *
170 * Revision 1.1.2.1 2005/09/05 06:29:47 gross
171 * These files have been extracted from finley to define a stand alone libray for iterative
172 * linear solvers on the ALTIX. main entry through Paso_solve. this version compiles but
173 * has not been tested yet.
174 *
175 *
176 */

Properties

Name Value
svn:eol-style native
svn:keywords Author Date Id Revision

  ViewVC Help
Powered by ViewVC 1.1.26