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

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Revision 3314 - (hide annotations)
Tue Oct 26 22:22:20 2010 UTC (8 years, 10 months ago) by gross
File MIME type: text/plain
File size: 12145 byte(s)
output removed/leaned up
1 ksteube 1312
2     /*******************************************************
3 ksteube 1811 *
4 jfenwick 2881 * Copyright (c) 2003-2010 by University of Queensland
5 ksteube 1811 * Earth Systems Science Computational Center (ESSCC)
6     * http://www.uq.edu.au/esscc
7     *
8     * Primary Business: Queensland, Australia
9     * Licensed under the Open Software License version 3.0
10     * http://www.opensource.org/licenses/osl-3.0.php
11     *
12     *******************************************************/
13 dhawcroft 631
14 ksteube 1811
15 jgs 150 /**************************************************************/
16    
17     /* Paso: SystemMatrix */
18    
19     /**************************************************************/
20    
21 jfenwick 2608 /* Author: Lutz Gross, l.gross@uq.edu.au */
22 jgs 150
23     /**************************************************************/
24    
25     #include "SystemMatrix.h"
26 gross 3120 #include "Preconditioner.h"
27 jgs 150
28     /**************************************************************/
29    
30     /* allocates a SystemMatrix of type type using the given matrix pattern
31 gross 2551 Values are initialized by zero.
32     if patternIsUnrolled and type & MATRIX_FORMAT_BLK1, it is assumed that the pattern is allready unrolled to match the requested block size
33     and offsets otherwise unrolling and offset adjustment will be performed.
34     */
35 jgs 150
36 gross 2551 Paso_SystemMatrix* Paso_SystemMatrix_alloc(Paso_SystemMatrixType type,Paso_SystemMatrixPattern *pattern, int row_block_size, int col_block_size,
37     const bool_t patternIsUnrolled) {
38 gross 432
39 jgs 150 Paso_SystemMatrix*out=NULL;
40 gross 1028 dim_t n_norm,i;
41 ksteube 1312 Paso_SystemMatrixType pattern_format_out;
42 gross 2551 bool_t unroll=FALSE;
43 gross 1028
44 gross 3312 pattern_format_out= (type & MATRIX_FORMAT_OFFSET1)? MATRIX_FORMAT_OFFSET1: MATRIX_FORMAT_DEFAULT;
45 jfenwick 3259 Esys_resetError();
46 gross 2551 if (patternIsUnrolled) {
47 gross 3312 if ( ! XNOR(type & MATRIX_FORMAT_OFFSET1, pattern->type & MATRIX_FORMAT_OFFSET1) ) {
48 jfenwick 3259 Esys_setError(TYPE_ERROR,"Paso_SystemMatrix_alloc: requested offset and pattern offset does not match.");
49 gross 2551 return NULL;
50     }
51     }
52     /* do we need to apply unrolling ? */
53     unroll
54     /* we don't like non-square blocks */
55     = (row_block_size!=col_block_size)
56     /* or any block size bigger than 3 */
57     || (col_block_size>3)
58     /* or if lock size one requested and the block size is not 1 */
59 gross 2554 || ((type & MATRIX_FORMAT_BLK1) && (col_block_size>1) )
60     /* or the offsets are wrong */
61 gross 3312 || ((type & MATRIX_FORMAT_OFFSET1) != ( pattern->type & MATRIX_FORMAT_OFFSET1));
62 gross 2551
63 jgs 150 out=MEMALLOC(1,Paso_SystemMatrix);
64 jfenwick 3259 if (! Esys_checkPtr(out)) {
65 ksteube 1312 out->type=type;
66 jgs 150 out->pattern=NULL;
67 ksteube 1312 out->row_distribution=NULL;
68     out->col_distribution=NULL;
69 jfenwick 3259 out->mpi_info=Esys_MPIInfo_getReference(pattern->mpi_info);
70 gross 1552 out->row_coupler=NULL;
71     out->col_coupler=NULL;
72 ksteube 1312 out->mainBlock=NULL;
73 gross 1552 out->row_coupleBlock=NULL;
74     out->col_coupleBlock=NULL;
75 ksteube 1312 out->normalizer_is_valid=FALSE;
76     out->normalizer=NULL;
77 gross 425 out->solver_package=PASO_PASO;
78 gross 3283 out->solver_p=NULL;
79 ksteube 1312 out->trilinos_data=NULL;
80 jgs 150 out->reference_counter=1;
81 gross 2551 out->logical_row_block_size=row_block_size;
82     out->logical_col_block_size=col_block_size;
83 ksteube 1312
84 gross 1552
85 gross 415 if (type & MATRIX_FORMAT_CSC) {
86 gross 2551 if (unroll) {
87     if (patternIsUnrolled) {
88     out->pattern=Paso_SystemMatrixPattern_getReference(pattern);
89     } else {
90     out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,pattern_format_out,col_block_size,row_block_size);
91     }
92     out->row_block_size=1;
93     out->col_block_size=1;
94     } else {
95 ksteube 1312 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,pattern_format_out,1,1);
96 jgs 150 out->row_block_size=row_block_size;
97     out->col_block_size=col_block_size;
98 gross 2551 }
99 jfenwick 3259 if (Esys_noError()) {
100 gross 2551 out->row_distribution=Paso_Distribution_getReference(out->pattern->input_distribution);
101     out->col_distribution=Paso_Distribution_getReference(out->pattern->output_distribution);
102     }
103 gross 415 } else {
104 gross 2551 if (unroll) {
105     if (patternIsUnrolled) {
106     out->pattern=Paso_SystemMatrixPattern_getReference(pattern);
107     } else {
108     out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,pattern_format_out,row_block_size,col_block_size);
109     }
110 gross 415 out->row_block_size=1;
111     out->col_block_size=1;
112 gross 2551 } else {
113 ksteube 1312 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,pattern_format_out,1,1);
114 gross 415 out->row_block_size=row_block_size;
115     out->col_block_size=col_block_size;
116 gross 2551 }
117 jfenwick 3259 if (Esys_noError()) {
118 gross 2551 out->row_distribution=Paso_Distribution_getReference(out->pattern->output_distribution);
119     out->col_distribution=Paso_Distribution_getReference(out->pattern->input_distribution);
120     }
121     }
122 jfenwick 3259 if (Esys_noError()) {
123 gross 2551 out->block_size=out->row_block_size*out->col_block_size;
124     out->col_coupler=Paso_Coupler_alloc(pattern->col_connector,out->col_block_size);
125     out->row_coupler=Paso_Coupler_alloc(pattern->row_connector,out->row_block_size);
126     /* this should be bypassed if trilinos is used */
127     if (type & MATRIX_FORMAT_TRILINOS_CRS) {
128     #ifdef TRILINOS
129     out->trilinos_data=Paso_TRILINOS_alloc();
130     #endif
131     } else {
132     out->solver_package=PASO_PASO;
133     out->mainBlock=Paso_SparseMatrix_alloc(type,out->pattern->mainPattern,row_block_size,col_block_size,TRUE);
134     out->col_coupleBlock=Paso_SparseMatrix_alloc(type,out->pattern->col_couplePattern,row_block_size,col_block_size,TRUE);
135     out->row_coupleBlock=Paso_SparseMatrix_alloc(type,out->pattern->row_couplePattern,row_block_size,col_block_size,TRUE);
136 jfenwick 3259 if (Esys_noError()) {
137 gross 2551 /* allocate memory for matrix entries */
138     if (type & MATRIX_FORMAT_CSC) {
139     n_norm = out->mainBlock->numCols * out->col_block_size;
140     } else {
141     n_norm = out->mainBlock->numRows * out->row_block_size;
142     }
143     out->normalizer=MEMALLOC(n_norm,double);
144     out->normalizer_is_valid=FALSE;
145 jfenwick 3259 if (! Esys_checkPtr(out->normalizer)) {
146 gross 2551 #pragma omp parallel for private(i) schedule(static)
147     for (i=0;i<n_norm;++i) out->normalizer[i]=0.;
148     }
149 gross 415 }
150     }
151 jgs 150 }
152     }
153     /* all done: */
154 jfenwick 3259 if (! Esys_noError()) {
155 ksteube 1312 Paso_SystemMatrix_free(out);
156 jgs 150 return NULL;
157     } else {
158     return out;
159     }
160     }
161    
162     /* returns a reference to Paso_SystemMatrix in */
163    
164 gross 2551 Paso_SystemMatrix* Paso_SystemMatrix_getReference(Paso_SystemMatrix* in) {
165 jgs 150 if (in!=NULL) ++(in->reference_counter);
166 gross 1792 return in;
167 jgs 150 }
168    
169     /* deallocates a SystemMatrix: */
170    
171 ksteube 1312 void Paso_SystemMatrix_free(Paso_SystemMatrix* in) {
172 jgs 150 if (in!=NULL) {
173     in->reference_counter--;
174     if (in->reference_counter<=0) {
175 gross 3283 Paso_solve_free(in);
176 ksteube 1312 Paso_SystemMatrixPattern_free(in->pattern);
177     Paso_Distribution_free(in->row_distribution);
178     Paso_Distribution_free(in->col_distribution);
179 jfenwick 3259 Esys_MPIInfo_free(in->mpi_info);
180 gross 1552 Paso_Coupler_free(in->row_coupler);
181     Paso_Coupler_free(in->col_coupler);
182 ksteube 1312 Paso_SparseMatrix_free(in->mainBlock);
183 gross 1552 Paso_SparseMatrix_free(in->col_coupleBlock);
184     Paso_SparseMatrix_free(in->row_coupleBlock);
185 jgs 150 MEMFREE(in->normalizer);
186     Paso_solve_free(in);
187 ksteube 1312 #ifdef TRILINOS
188     Paso_TRILINOS_free(in->trilinos_data);
189     #endif
190 jgs 150 MEMFREE(in);
191     #ifdef Paso_TRACE
192 ksteube 1312 printf("Paso_SystemMatrix_free: system matrix as been deallocated.\n");
193 jgs 150 #endif
194     }
195     }
196     }
197 gross 1639 void Paso_SystemMatrix_startCollect(Paso_SystemMatrix* A,const double* in)
198 ksteube 1312 {
199 gross 1552 Paso_SystemMatrix_startColCollect(A,in);
200 ksteube 1312 }
201     double* Paso_SystemMatrix_finishCollect(Paso_SystemMatrix* A)
202     {
203 gross 1552 return Paso_SystemMatrix_finishColCollect(A);
204 ksteube 1312 }
205    
206 gross 1639 void Paso_SystemMatrix_startColCollect(Paso_SystemMatrix* A,const double* in)
207 gross 1552 {
208     Paso_Coupler_startCollect(A->col_coupler, in);
209     }
210     double* Paso_SystemMatrix_finishColCollect(Paso_SystemMatrix* A)
211     {
212     Paso_Coupler_finishCollect(A->col_coupler);
213     return A->col_coupler->recv_buffer;
214     }
215 gross 1639 void Paso_SystemMatrix_startRowCollect(Paso_SystemMatrix* A,const double* in)
216 gross 1552 {
217     Paso_Coupler_startCollect(A->row_coupler, in);
218     }
219     double* Paso_SystemMatrix_finishRowCollect(Paso_SystemMatrix* A)
220     {
221     Paso_Coupler_finishCollect(A->row_coupler);
222     return A->row_coupler->recv_buffer;
223     }
224    
225 gross 1407 dim_t Paso_SystemMatrix_getTotalNumRows(const Paso_SystemMatrix* A){
226 ksteube 1312 return A->mainBlock->numRows * A->row_block_size;
227     }
228    
229 gross 1407 dim_t Paso_SystemMatrix_getTotalNumCols(const Paso_SystemMatrix* A){
230 ksteube 1312 return A->mainBlock->numCols * A->col_block_size;
231     }
232     dim_t Paso_SystemMatrix_getGlobalNumRows(Paso_SystemMatrix* A) {
233     if (A->type & MATRIX_FORMAT_CSC) {
234     return Paso_Distribution_getGlobalNumComponents(A->pattern->input_distribution);
235     } else {
236     return Paso_Distribution_getGlobalNumComponents(A->pattern->output_distribution);
237     }
238     }
239     dim_t Paso_SystemMatrix_getGlobalNumCols(Paso_SystemMatrix* A) {
240     if (A->type & MATRIX_FORMAT_CSC) {
241     return Paso_Distribution_getGlobalNumComponents(A->pattern->output_distribution);
242     } else {
243     return Paso_Distribution_getGlobalNumComponents(A->pattern->input_distribution);
244     }
245    
246     }
247 gross 1361 dim_t Paso_SystemMatrix_getNumOutput(Paso_SystemMatrix* A) {
248     return Paso_SystemMatrixPattern_getNumOutput(A->pattern);
249     }
250 ksteube 1312
251 gross 3005 index_t* Paso_SystemMatrix_borrowMainDiagonalPointer(Paso_SystemMatrix * A_p)
252     {
253 gross 3008 index_t* out=NULL;
254     int fail=0;
255     out=Paso_SparseMatrix_borrowMainDiagonalPointer(A_p->mainBlock);
256     if (out==NULL) fail=1;
257 jfenwick 3259 #ifdef ESYS_MPI
258 gross 3008 {
259     int fail_loc = fail;
260     MPI_Allreduce(&fail_loc, &fail, 1, MPI_INT, MPI_MAX, A_p->mpi_info->comm);
261     }
262     #endif
263 jfenwick 3259 if (fail>0) Esys_setError(VALUE_ERROR, "Paso_SystemMatrix_borrowMainDiagonalPointer: no main diagonal");
264 gross 3008 return out;
265 gross 3005 }
266    
267     void Paso_SystemMatrix_makeZeroRowSums(Paso_SystemMatrix * A_p, double* left_over)
268     {
269     index_t ir, ib, irow;
270     register double rtmp1, rtmp2;
271     const dim_t n = Paso_SystemMatrixPattern_getNumOutput(A_p->pattern);
272     const dim_t nblk = A_p->block_size;
273     const dim_t blk = A_p->row_block_size;
274     const index_t* main_ptr=Paso_SystemMatrix_borrowMainDiagonalPointer(A_p);
275    
276    
277     Paso_SystemMatrix_rowSum(A_p, left_over); /* left_over now hold the row sum */
278    
279     #pragma omp parallel for private(ir,ib, rtmp1, rtmp2) schedule(static)
280     for (ir=0;ir< n;ir++) {
281     for (ib=0;ib<blk; ib++) {
282     irow=ib+blk*ir;
283     rtmp1=left_over[irow];
284     rtmp2=A_p->mainBlock->val[main_ptr[ir]*nblk+ib+blk*ib];
285     A_p->mainBlock->val[main_ptr[ir]*nblk+ib+blk*ib] = -rtmp1;
286     left_over[irow]=rtmp2+rtmp1;
287     }
288     }
289     }
290     void Paso_SystemMatrix_copyBlockFromMainDiagonal(Paso_SystemMatrix * A_p, double* out)
291     {
292     Paso_SparseMatrix_copyBlockFromMainDiagonal(A_p->mainBlock, out);
293     return;
294     }
295     void Paso_SystemMatrix_copyBlockToMainDiagonal(Paso_SystemMatrix * A_p, const double* in)
296     {
297     Paso_SparseMatrix_copyBlockToMainDiagonal(A_p->mainBlock, in);
298     return;
299     }
300     void Paso_SystemMatrix_copyFromMainDiagonal(Paso_SystemMatrix * A_p, double* out)
301     {
302     Paso_SparseMatrix_copyFromMainDiagonal(A_p->mainBlock, out);
303     return;
304     }
305     void Paso_SystemMatrix_copyToMainDiagonal(Paso_SystemMatrix * A_p, const double* in)
306     {
307     Paso_SparseMatrix_copyToMainDiagonal(A_p->mainBlock, in);
308     return;
309 gross 3120 }
310    
311     void Paso_SystemMatrix_setPreconditioner(Paso_SystemMatrix* A,Paso_Options* options) {
312 gross 3283 if (A->solver_p==NULL) {
313     A->solver_p=Paso_Preconditioner_alloc(A,options);
314 gross 3120 }
315     }
316    
317     /* applies the preconditioner */
318     /* has to be called within a parallel reqion */
319     /* barrier synchronization is performed before the evaluation to make sure that the input vector is available */
320     void Paso_SystemMatrix_solvePreconditioner(Paso_SystemMatrix* A,double* x,double* b){
321 gross 3283 Paso_Preconditioner* prec=(Paso_Preconditioner*) A->solver_p;
322 gross 3120 Paso_Preconditioner_solve(prec, A,x,b);
323     }
324     void Paso_SystemMatrix_freePreconditioner(Paso_SystemMatrix* A) {
325 gross 3193 Paso_Preconditioner* prec=NULL;
326 gross 3120 if (A!=NULL) {
327 gross 3283 prec=(Paso_Preconditioner*) A->solver_p;
328 gross 3120 Paso_Preconditioner_free(prec);
329 gross 3283 A->solver_p=NULL;
330 gross 3120 }
331 gross 3312 }

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