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

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Revision 1087 - (show annotations)
Thu Apr 12 10:01:47 2007 UTC (12 years, 2 months ago) by gross
File MIME type: text/plain
File size: 8357 byte(s)
the MPI version of PASO.PCG is running. 
There is a bug in the rectangular mesh generators but they need to be
revised in any case to clean up the code.


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 "Paso_MPI.h"
28 #include "SystemMatrix.h"
29 #include "TRILINOS.h"
30
31 /**************************************************************/
32
33 /* allocates a SystemMatrix of type type using the given matrix pattern
34 if type is UNKOWN CSR is used.
35 if CSC or CSC_BLK1 is used pattern has to give the CSC pattern.
36 if CSR or CSR_BLK1 is used pattern has to give the CSR pattern.
37 Values are initialized by zero. */
38
39 Paso_SystemMatrix* Paso_SystemMatrix_alloc(Paso_SystemMatrixType type,Paso_SystemMatrixPattern *pattern, int row_block_size, int col_block_size) {
40
41 double time0;
42 Paso_SystemMatrix*out=NULL;
43 Paso_resetError();
44 time0=Paso_timer();
45 dim_t n_norm,i;
46 out=MEMALLOC(1,Paso_SystemMatrix);
47 if (! Paso_checkPtr(out)) {
48 out->pattern=NULL;
49 out->solver_package=PASO_PASO;
50 out->solver=NULL;
51 out->val=NULL;
52 out->trilinos_data=NULL;
53 out->reference_counter=1;
54 out->type=type;
55 /* ====== compressed sparse columns === */
56 if (type & MATRIX_FORMAT_CSC) {
57 if (type & MATRIX_FORMAT_SYM) {
58 Paso_setError(TYPE_ERROR,"Generation of matrix pattern for symmetric CSC is not implemented yet.");
59 return NULL;
60 } else {
61 if ((type & MATRIX_FORMAT_BLK1) || row_block_size!=col_block_size || col_block_size>3) {
62 if (type & MATRIX_FORMAT_OFFSET1) {
63 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,PATTERN_FORMAT_OFFSET1,col_block_size,row_block_size);
64 } else {
65 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,PATTERN_FORMAT_DEFAULT,col_block_size,row_block_size);
66 }
67 out->row_block_size=1;
68 out->col_block_size=1;
69 } else {
70 if ( (type & MATRIX_FORMAT_OFFSET1) ==(pattern->type & PATTERN_FORMAT_OFFSET1)) {
71 out->pattern=Paso_SystemMatrixPattern_reference(pattern);
72 } else {
73 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,(type & MATRIX_FORMAT_OFFSET1)? PATTERN_FORMAT_OFFSET1: PATTERN_FORMAT_DEFAULT,1,1);
74 }
75 out->row_block_size=row_block_size;
76 out->col_block_size=col_block_size;
77 }
78 }
79 out->row_distribution=Paso_Distribution_getReference(out->pattern->input_distribution);
80 out->col_distribution=Paso_Distribution_getReference(out->pattern->output_distribution);
81 } else {
82 /* ====== compressed sparse row === */
83 if (type & MATRIX_FORMAT_SYM) {
84 Paso_setError(TYPE_ERROR,"Generation of matrix pattern for symmetric CSR is not implemented yet.");
85 return NULL;
86 } else {
87 if ((type & MATRIX_FORMAT_BLK1) || row_block_size!=col_block_size || col_block_size>3) {
88 if (type & MATRIX_FORMAT_OFFSET1) {
89 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,PATTERN_FORMAT_OFFSET1,row_block_size,col_block_size);
90 } else {
91 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,PATTERN_FORMAT_DEFAULT,row_block_size,col_block_size);
92 }
93 out->row_block_size=1;
94 out->col_block_size=1;
95 } else {
96 if ((type & MATRIX_FORMAT_OFFSET1)==(pattern->type & PATTERN_FORMAT_OFFSET1)) {
97 out->pattern=Paso_SystemMatrixPattern_reference(pattern);
98 } else {
99 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,(type & MATRIX_FORMAT_OFFSET1)? PATTERN_FORMAT_OFFSET1: PATTERN_FORMAT_DEFAULT,1,1);
100 }
101 out->row_block_size=row_block_size;
102 out->col_block_size=col_block_size;
103 }
104 }
105 out->row_distribution=Paso_Distribution_getReference(out->pattern->output_distribution);
106 out->col_distribution=Paso_Distribution_getReference(out->pattern->input_distribution);
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->myLen=(size_t)(out->pattern->myLen)*(size_t)(out->block_size);
113
114 out->numRows = out->row_distribution->numComponents;
115 out->myNumRows = out->row_distribution->myNumComponents;
116 out->myFirstRow = out->row_distribution->myFirstComponent;
117 out->maxNumRows = out->row_distribution->maxNumComponents;
118 out->numCols = out->col_distribution->numComponents;
119 out->myNumCols = out->col_distribution->myNumComponents;
120 out->myFirstCol = out->col_distribution->myFirstComponent;
121 out->maxNumCols = out->col_distribution->maxNumComponents;
122 out->mpi_info = Paso_MPIInfo_getReference(out->pattern->mpi_info);
123 /* allocate memory for matrix entries */
124 if (type & MATRIX_FORMAT_TRILINOS_CRS) {
125 Paso_TRILINOS_alloc(out->trilinos_data, out->pattern,out->row_block_size,out->col_block_size);
126 } else {
127 if (type & MATRIX_FORMAT_CSC) {
128 n_norm = out->maxNumCols * out->col_block_size;
129 } else {
130 n_norm = out->maxNumRows * out->row_block_size;
131 }
132 out->val=MEMALLOC(out->myLen,double);
133 out->normalizer=MEMALLOC(n_norm,double);
134 out->normalizer_is_valid=FALSE;
135 if (! Paso_checkPtr(out->val)) Paso_SystemMatrix_setValues(out,DBLE(0));
136 if (! Paso_checkPtr(out->normalizer)) {
137 #pragma omp parallel for private(i) schedule(static)
138 for (i=0;i<n_norm;++i) out->normalizer[i]=0.;
139 }
140 }
141 }
142 /* all done: */
143 if (! Paso_noError()) {
144 Paso_SystemMatrix_dealloc(out);
145 return NULL;
146 } else {
147 #ifdef Paso_TRACE
148 printf("timing: system matrix %.4e sec\n",Paso_timer()-time0);
149 printf("Paso_SystemMatrix_alloc: %ld x %ld system matrix has been allocated.\n",(long)out->numRows,(long)out->numCols);
150 #endif
151 return out;
152 }
153 }
154
155 /* returns a reference to Paso_SystemMatrix in */
156
157 Paso_SystemMatrix* Paso_SystemMatrix_reference(Paso_SystemMatrix* in) {
158 if (in!=NULL) ++(in->reference_counter);
159 return NULL;
160 }
161
162 /* deallocates a SystemMatrix: */
163
164 void Paso_SystemMatrix_dealloc(Paso_SystemMatrix* in) {
165 if (in!=NULL) {
166 in->reference_counter--;
167 if (in->reference_counter<=0) {
168 Paso_SystemMatrixPattern_dealloc(in->pattern);
169 Paso_Distribution_free(in->row_distribution);
170 Paso_Distribution_free(in->col_distribution);
171 Paso_MPIInfo_dealloc(in->mpi_info);
172 MEMFREE(in->val);
173 MEMFREE(in->normalizer);
174 Paso_TRILINOS_free(in->trilinos_data);
175 Paso_solve_free(in);
176 MEMFREE(in);
177 #ifdef Paso_TRACE
178 printf("Paso_SystemMatrix_dealloc: system matrix as been deallocated.\n");
179 #endif
180 }
181 }
182 }
183 /*
184 * $Log$
185 * Revision 1.2 2005/09/15 03:44:38 jgs
186 * Merge of development branch dev-02 back to main trunk on 2005-09-15
187 *
188 * Revision 1.1.2.2 2005/09/07 00:59:08 gross
189 * some inconsistent renaming fixed to make the linking work.
190 *
191 * Revision 1.1.2.1 2005/09/05 06:29:47 gross
192 * These files have been extracted from finley to define a stand alone libray for iterative
193 * linear solvers on the ALTIX. main entry through Paso_solve. this version compiles but
194 * has not been tested yet.
195 *
196 *
197 */

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