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

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Revision 3312 - (hide annotations)
Tue Oct 26 07:54:58 2010 UTC (8 years, 10 months ago) by gross
File MIME type: text/plain
File size: 12176 byte(s)
last step for a clean up version of the AMG
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 3312 printf("MATRIX_FORMAT_CSC\n");
87 gross 2551 if (unroll) {
88     if (patternIsUnrolled) {
89     out->pattern=Paso_SystemMatrixPattern_getReference(pattern);
90     } else {
91     out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,pattern_format_out,col_block_size,row_block_size);
92     }
93     out->row_block_size=1;
94     out->col_block_size=1;
95     } else {
96 ksteube 1312 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,pattern_format_out,1,1);
97 jgs 150 out->row_block_size=row_block_size;
98     out->col_block_size=col_block_size;
99 gross 2551 }
100 jfenwick 3259 if (Esys_noError()) {
101 gross 2551 out->row_distribution=Paso_Distribution_getReference(out->pattern->input_distribution);
102     out->col_distribution=Paso_Distribution_getReference(out->pattern->output_distribution);
103     }
104 gross 415 } else {
105 gross 2551 if (unroll) {
106     if (patternIsUnrolled) {
107     out->pattern=Paso_SystemMatrixPattern_getReference(pattern);
108     } else {
109     out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,pattern_format_out,row_block_size,col_block_size);
110     }
111 gross 415 out->row_block_size=1;
112     out->col_block_size=1;
113 gross 2551 } else {
114 ksteube 1312 out->pattern=Paso_SystemMatrixPattern_unrollBlocks(pattern,pattern_format_out,1,1);
115 gross 415 out->row_block_size=row_block_size;
116     out->col_block_size=col_block_size;
117 gross 2551 }
118 jfenwick 3259 if (Esys_noError()) {
119 gross 2551 out->row_distribution=Paso_Distribution_getReference(out->pattern->output_distribution);
120     out->col_distribution=Paso_Distribution_getReference(out->pattern->input_distribution);
121     }
122     }
123 jfenwick 3259 if (Esys_noError()) {
124 gross 2551 out->block_size=out->row_block_size*out->col_block_size;
125     out->col_coupler=Paso_Coupler_alloc(pattern->col_connector,out->col_block_size);
126     out->row_coupler=Paso_Coupler_alloc(pattern->row_connector,out->row_block_size);
127     /* this should be bypassed if trilinos is used */
128     if (type & MATRIX_FORMAT_TRILINOS_CRS) {
129     #ifdef TRILINOS
130     out->trilinos_data=Paso_TRILINOS_alloc();
131     #endif
132     } else {
133     out->solver_package=PASO_PASO;
134     out->mainBlock=Paso_SparseMatrix_alloc(type,out->pattern->mainPattern,row_block_size,col_block_size,TRUE);
135     out->col_coupleBlock=Paso_SparseMatrix_alloc(type,out->pattern->col_couplePattern,row_block_size,col_block_size,TRUE);
136     out->row_coupleBlock=Paso_SparseMatrix_alloc(type,out->pattern->row_couplePattern,row_block_size,col_block_size,TRUE);
137 jfenwick 3259 if (Esys_noError()) {
138 gross 2551 /* allocate memory for matrix entries */
139     if (type & MATRIX_FORMAT_CSC) {
140     n_norm = out->mainBlock->numCols * out->col_block_size;
141     } else {
142     n_norm = out->mainBlock->numRows * out->row_block_size;
143     }
144     out->normalizer=MEMALLOC(n_norm,double);
145     out->normalizer_is_valid=FALSE;
146 jfenwick 3259 if (! Esys_checkPtr(out->normalizer)) {
147 gross 2551 #pragma omp parallel for private(i) schedule(static)
148     for (i=0;i<n_norm;++i) out->normalizer[i]=0.;
149     }
150 gross 415 }
151     }
152 jgs 150 }
153     }
154     /* all done: */
155 jfenwick 3259 if (! Esys_noError()) {
156 ksteube 1312 Paso_SystemMatrix_free(out);
157 jgs 150 return NULL;
158     } else {
159     return out;
160     }
161     }
162    
163     /* returns a reference to Paso_SystemMatrix in */
164    
165 gross 2551 Paso_SystemMatrix* Paso_SystemMatrix_getReference(Paso_SystemMatrix* in) {
166 jgs 150 if (in!=NULL) ++(in->reference_counter);
167 gross 1792 return in;
168 jgs 150 }
169    
170     /* deallocates a SystemMatrix: */
171    
172 ksteube 1312 void Paso_SystemMatrix_free(Paso_SystemMatrix* in) {
173 jgs 150 if (in!=NULL) {
174     in->reference_counter--;
175     if (in->reference_counter<=0) {
176 gross 3283 Paso_solve_free(in);
177 ksteube 1312 Paso_SystemMatrixPattern_free(in->pattern);
178     Paso_Distribution_free(in->row_distribution);
179     Paso_Distribution_free(in->col_distribution);
180 jfenwick 3259 Esys_MPIInfo_free(in->mpi_info);
181 gross 1552 Paso_Coupler_free(in->row_coupler);
182     Paso_Coupler_free(in->col_coupler);
183 ksteube 1312 Paso_SparseMatrix_free(in->mainBlock);
184 gross 1552 Paso_SparseMatrix_free(in->col_coupleBlock);
185     Paso_SparseMatrix_free(in->row_coupleBlock);
186 jgs 150 MEMFREE(in->normalizer);
187     Paso_solve_free(in);
188 ksteube 1312 #ifdef TRILINOS
189     Paso_TRILINOS_free(in->trilinos_data);
190     #endif
191 jgs 150 MEMFREE(in);
192     #ifdef Paso_TRACE
193 ksteube 1312 printf("Paso_SystemMatrix_free: system matrix as been deallocated.\n");
194 jgs 150 #endif
195     }
196     }
197     }
198 gross 1639 void Paso_SystemMatrix_startCollect(Paso_SystemMatrix* A,const double* in)
199 ksteube 1312 {
200 gross 1552 Paso_SystemMatrix_startColCollect(A,in);
201 ksteube 1312 }
202     double* Paso_SystemMatrix_finishCollect(Paso_SystemMatrix* A)
203     {
204 gross 1552 return Paso_SystemMatrix_finishColCollect(A);
205 ksteube 1312 }
206    
207 gross 1639 void Paso_SystemMatrix_startColCollect(Paso_SystemMatrix* A,const double* in)
208 gross 1552 {
209     Paso_Coupler_startCollect(A->col_coupler, in);
210     }
211     double* Paso_SystemMatrix_finishColCollect(Paso_SystemMatrix* A)
212     {
213     Paso_Coupler_finishCollect(A->col_coupler);
214     return A->col_coupler->recv_buffer;
215     }
216 gross 1639 void Paso_SystemMatrix_startRowCollect(Paso_SystemMatrix* A,const double* in)
217 gross 1552 {
218     Paso_Coupler_startCollect(A->row_coupler, in);
219     }
220     double* Paso_SystemMatrix_finishRowCollect(Paso_SystemMatrix* A)
221     {
222     Paso_Coupler_finishCollect(A->row_coupler);
223     return A->row_coupler->recv_buffer;
224     }
225    
226 gross 1407 dim_t Paso_SystemMatrix_getTotalNumRows(const Paso_SystemMatrix* A){
227 ksteube 1312 return A->mainBlock->numRows * A->row_block_size;
228     }
229    
230 gross 1407 dim_t Paso_SystemMatrix_getTotalNumCols(const Paso_SystemMatrix* A){
231 ksteube 1312 return A->mainBlock->numCols * A->col_block_size;
232     }
233     dim_t Paso_SystemMatrix_getGlobalNumRows(Paso_SystemMatrix* A) {
234     if (A->type & MATRIX_FORMAT_CSC) {
235     return Paso_Distribution_getGlobalNumComponents(A->pattern->input_distribution);
236     } else {
237     return Paso_Distribution_getGlobalNumComponents(A->pattern->output_distribution);
238     }
239     }
240     dim_t Paso_SystemMatrix_getGlobalNumCols(Paso_SystemMatrix* A) {
241     if (A->type & MATRIX_FORMAT_CSC) {
242     return Paso_Distribution_getGlobalNumComponents(A->pattern->output_distribution);
243     } else {
244     return Paso_Distribution_getGlobalNumComponents(A->pattern->input_distribution);
245     }
246    
247     }
248 gross 1361 dim_t Paso_SystemMatrix_getNumOutput(Paso_SystemMatrix* A) {
249     return Paso_SystemMatrixPattern_getNumOutput(A->pattern);
250     }
251 ksteube 1312
252 gross 3005 index_t* Paso_SystemMatrix_borrowMainDiagonalPointer(Paso_SystemMatrix * A_p)
253     {
254 gross 3008 index_t* out=NULL;
255     int fail=0;
256     out=Paso_SparseMatrix_borrowMainDiagonalPointer(A_p->mainBlock);
257     if (out==NULL) fail=1;
258 jfenwick 3259 #ifdef ESYS_MPI
259 gross 3008 {
260     int fail_loc = fail;
261     MPI_Allreduce(&fail_loc, &fail, 1, MPI_INT, MPI_MAX, A_p->mpi_info->comm);
262     }
263     #endif
264 jfenwick 3259 if (fail>0) Esys_setError(VALUE_ERROR, "Paso_SystemMatrix_borrowMainDiagonalPointer: no main diagonal");
265 gross 3008 return out;
266 gross 3005 }
267    
268     void Paso_SystemMatrix_makeZeroRowSums(Paso_SystemMatrix * A_p, double* left_over)
269     {
270     index_t ir, ib, irow;
271     register double rtmp1, rtmp2;
272     const dim_t n = Paso_SystemMatrixPattern_getNumOutput(A_p->pattern);
273     const dim_t nblk = A_p->block_size;
274     const dim_t blk = A_p->row_block_size;
275     const index_t* main_ptr=Paso_SystemMatrix_borrowMainDiagonalPointer(A_p);
276    
277    
278     Paso_SystemMatrix_rowSum(A_p, left_over); /* left_over now hold the row sum */
279    
280     #pragma omp parallel for private(ir,ib, rtmp1, rtmp2) schedule(static)
281     for (ir=0;ir< n;ir++) {
282     for (ib=0;ib<blk; ib++) {
283     irow=ib+blk*ir;
284     rtmp1=left_over[irow];
285     rtmp2=A_p->mainBlock->val[main_ptr[ir]*nblk+ib+blk*ib];
286     A_p->mainBlock->val[main_ptr[ir]*nblk+ib+blk*ib] = -rtmp1;
287     left_over[irow]=rtmp2+rtmp1;
288     }
289     }
290     }
291     void Paso_SystemMatrix_copyBlockFromMainDiagonal(Paso_SystemMatrix * A_p, double* out)
292     {
293     Paso_SparseMatrix_copyBlockFromMainDiagonal(A_p->mainBlock, out);
294     return;
295     }
296     void Paso_SystemMatrix_copyBlockToMainDiagonal(Paso_SystemMatrix * A_p, const double* in)
297     {
298     Paso_SparseMatrix_copyBlockToMainDiagonal(A_p->mainBlock, in);
299     return;
300     }
301     void Paso_SystemMatrix_copyFromMainDiagonal(Paso_SystemMatrix * A_p, double* out)
302     {
303     Paso_SparseMatrix_copyFromMainDiagonal(A_p->mainBlock, out);
304     return;
305     }
306     void Paso_SystemMatrix_copyToMainDiagonal(Paso_SystemMatrix * A_p, const double* in)
307     {
308     Paso_SparseMatrix_copyToMainDiagonal(A_p->mainBlock, in);
309     return;
310 gross 3120 }
311    
312     void Paso_SystemMatrix_setPreconditioner(Paso_SystemMatrix* A,Paso_Options* options) {
313 gross 3283 if (A->solver_p==NULL) {
314     A->solver_p=Paso_Preconditioner_alloc(A,options);
315 gross 3120 }
316     }
317    
318     /* applies the preconditioner */
319     /* has to be called within a parallel reqion */
320     /* barrier synchronization is performed before the evaluation to make sure that the input vector is available */
321     void Paso_SystemMatrix_solvePreconditioner(Paso_SystemMatrix* A,double* x,double* b){
322 gross 3283 Paso_Preconditioner* prec=(Paso_Preconditioner*) A->solver_p;
323 gross 3120 Paso_Preconditioner_solve(prec, A,x,b);
324     }
325     void Paso_SystemMatrix_freePreconditioner(Paso_SystemMatrix* A) {
326 gross 3193 Paso_Preconditioner* prec=NULL;
327 gross 3120 if (A!=NULL) {
328 gross 3283 prec=(Paso_Preconditioner*) A->solver_p;
329 gross 3120 Paso_Preconditioner_free(prec);
330 gross 3283 A->solver_p=NULL;
331 gross 3120 }
332 gross 3312 }

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