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

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Revision 432 - (show annotations)
Fri Jan 13 07:38:54 2006 UTC (13 years, 10 months ago) by gross
File MIME type: text/plain
File size: 6437 byte(s)
some fixes for openmp
1 /* $Id$ */
2
3 /**************************************************************/
4
5 /* Paso: SystemMatrix */
6
7 /**************************************************************/
8
9 /* Copyrights by ACcESS Australia 2003, 2004,2005 */
10 /* Author: gross@access.edu.au */
11
12 /**************************************************************/
13
14 #include "Paso.h"
15 #include "SystemMatrix.h"
16
17 /**************************************************************/
18
19 /* allocates a SystemMatrix of type type using the given matrix pattern
20 if type is UNKOWN CSR is used.
21 if CSC or CSC_BLK1 is used pattern has to give the CSC pattern.
22 if CSR or CSR_BLK1 is used pattern has to give the CSR pattern.
23 Values are initialized by zero. */
24
25 Paso_SystemMatrix* Paso_SystemMatrix_alloc(Paso_SystemMatrixType type,Paso_SystemMatrixPattern *pattern, int row_block_size, int col_block_size) {
26
27 double time0;
28 Paso_SystemMatrix*out=NULL;
29 Paso_resetError();
30 time0=Paso_timer();
31 dim_t n_norm,i;
32 out=MEMALLOC(1,Paso_SystemMatrix);
33 if (! Paso_checkPtr(out)) {
34 out->pattern=NULL;
35 out->solver_package=PASO_PASO;
36 out->solver=NULL;
37 out->val=NULL;
38 out->reference_counter=1;
39 out->type=type;
40 if (type & MATRIX_FORMAT_CSC) {
41 if (type & MATRIX_FORMAT_SYM) {
42 Paso_setError(TYPE_ERROR,"Generation of matrix pattern for symmetric CSC is not implemented yet.");
43 return NULL;
44 } else {
45 if ((type & MATRIX_FORMAT_BLK1) || row_block_size!=col_block_size || col_block_size>3) {
46 if (type & MATRIX_FORMAT_OFFSET1) {
47 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,PATTERN_FORMAT_OFFSET1,col_block_size,row_block_size);
48 } else {
49 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,PATTERN_FORMAT_DEFAULT,col_block_size,row_block_size);
50 }
51 out->row_block_size=1;
52 out->col_block_size=1;
53 } else {
54 if ( (type & MATRIX_FORMAT_OFFSET1) ==(pattern->type & PATTERN_FORMAT_OFFSET1)) {
55 out->pattern=Paso_SystemMatrixPattern_reference(pattern);
56 } else {
57 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,(type & MATRIX_FORMAT_OFFSET1)? PATTERN_FORMAT_OFFSET1: PATTERN_FORMAT_DEFAULT,1,1);
58 }
59 out->row_block_size=row_block_size;
60 out->col_block_size=col_block_size;
61 }
62 }
63 out->num_rows=out->pattern->n_index;
64 out->num_cols=out->pattern->n_ptr;
65 n_norm = out->num_cols * out->col_block_size;
66 } else {
67 if (type & MATRIX_FORMAT_SYM) {
68 Paso_setError(TYPE_ERROR,"Generation of matrix pattern for symmetric CSR is not implemented yet.");
69 return NULL;
70 } else {
71 if ((type & MATRIX_FORMAT_BLK1) || row_block_size!=col_block_size || col_block_size>3) {
72 if (type & MATRIX_FORMAT_OFFSET1) {
73 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,PATTERN_FORMAT_OFFSET1,row_block_size,col_block_size);
74 } else {
75 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,PATTERN_FORMAT_DEFAULT,row_block_size,col_block_size);
76 }
77 out->row_block_size=1;
78 out->col_block_size=1;
79 } else {
80 if ((type & MATRIX_FORMAT_OFFSET1)==(pattern->type & PATTERN_FORMAT_OFFSET1)) {
81 out->pattern=Paso_SystemMatrixPattern_reference(pattern);
82 } else {
83 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,(type & MATRIX_FORMAT_OFFSET1)? PATTERN_FORMAT_OFFSET1: PATTERN_FORMAT_DEFAULT,1,1);
84 }
85 out->row_block_size=row_block_size;
86 out->col_block_size=col_block_size;
87 }
88 }
89 out->num_rows=out->pattern->n_index;
90 out->num_cols=out->pattern->n_ptr;
91 n_norm = out->num_cols * out->col_block_size;
92 out->num_rows=out->pattern->n_ptr;
93 out->num_cols=out->pattern->n_index;
94 n_norm = out->num_rows * out->row_block_size;
95 }
96 out->logical_row_block_size=row_block_size;
97 out->logical_col_block_size=col_block_size;
98 out->logical_block_size=out->logical_row_block_size*out->logical_block_size;
99 out->block_size=out->row_block_size*out->col_block_size;
100 out->len=(size_t)(out->pattern->len)*(size_t)(out->block_size);
101 /* allocate memory for matrix entries */
102 out->val=MEMALLOC(out->len,double);
103 out->normalizer=MEMALLOC(n_norm,double);
104 out->normalizer_is_valid=FALSE;
105 if (! Paso_checkPtr(out->val)) {
106 Paso_SystemMatrix_setValues(out,DBLE(0));
107 }
108 if (! Paso_checkPtr(out->normalizer)) {
109 #pragma omp parallel for private(i) schedule(static)
110 for (i=0;i<n_norm;++i) out->normalizer[i]=0.;
111 }
112 }
113 /* all done: */
114 if (! Paso_noError()) {
115 Paso_SystemMatrix_dealloc(out);
116 return NULL;
117 } else {
118 #ifdef Paso_TRACE
119 printf("timing: system matrix %.4e sec\n",Paso_timer()-time0);
120 printf("Paso_SystemMatrix_alloc: %ld x %ld system matrix has been allocated.\n",(long)out->num_rows,(long)out->num_cols);
121 #endif
122 return out;
123 }
124 }
125
126 /* returns a reference to Paso_SystemMatrix in */
127
128 Paso_SystemMatrix* Paso_SystemMatrix_reference(Paso_SystemMatrix* in) {
129 if (in!=NULL) ++(in->reference_counter);
130 return NULL;
131 }
132
133 /* deallocates a SystemMatrix: */
134
135 void Paso_SystemMatrix_dealloc(Paso_SystemMatrix* in) {
136 if (in!=NULL) {
137 in->reference_counter--;
138 if (in->reference_counter<=0) {
139 MEMFREE(in->val);
140 MEMFREE(in->normalizer);
141 Paso_SystemMatrixPattern_dealloc(in->pattern);
142 Paso_solve_free(in);
143 MEMFREE(in);
144 #ifdef Paso_TRACE
145 printf("Paso_SystemMatrix_dealloc: system matrix as been deallocated.\n");
146 #endif
147 }
148 }
149 }
150 /*
151 * $Log$
152 * Revision 1.2 2005/09/15 03:44:38 jgs
153 * Merge of development branch dev-02 back to main trunk on 2005-09-15
154 *
155 * Revision 1.1.2.2 2005/09/07 00:59:08 gross
156 * some inconsistent renaming fixed to make the linking work.
157 *
158 * Revision 1.1.2.1 2005/09/05 06:29:47 gross
159 * These files have been extracted from finley to define a stand alone libray for iterative
160 * linear solvers on the ALTIX. main entry through Paso_solve. this version compiles but
161 * has not been tested yet.
162 *
163 *
164 */

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