PetscSolverFeti.cc 77.8 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
//
// Software License for AMDiS
//
// Copyright (c) 2010 Dresden University of Technology 
// All rights reserved.
// Authors: Simon Vey, Thomas Witkowski et al.
//
// This file is part of AMDiS
//
// See also license.opensource.txt in the distribution.


13
#include "AMDiS.h"
Thomas Witkowski's avatar
Thomas Witkowski committed
14
#include "MatrixVector.h"
15
#include "parallel/PetscHelper.h"
16
#include "parallel/PetscSolverFeti.h"
17
18
#include "parallel/PetscSolverFetiDebug.h"
#include "parallel/PetscSolverFetiMonitor.h"
19
#include "parallel/PetscSolverFetiStructs.h"
20
21
#include "parallel/PetscSolverFetiOperators.h"
#include "parallel/PetscSolverFetiTimings.h"
22
23
#include "parallel/StdMpi.h"
#include "parallel/MpiHelper.h"
24
#include "parallel/PetscSolverGlobalMatrix.h"
25
#include "io/VtkWriter.h"
26
27
28
29
30

namespace AMDiS {

  using namespace std;

31
32
  PetscSolverFeti::PetscSolverFeti()
    : PetscSolver(),
33
34
35
36
37
38
      primalDofMap(COMPONENT_WISE),
      dualDofMap(COMPONENT_WISE),
      interfaceDofMap(COMPONENT_WISE),
      localDofMap(COMPONENT_WISE),
      lagrangeMap(COMPONENT_WISE),
      interiorDofMap(COMPONENT_WISE),
39
      schurPrimalSolver(0),
40
      multiLevelTest(false),
Thomas Witkowski's avatar
Thomas Witkowski committed
41
      subdomain(NULL),
42
      massMatrixSolver(NULL),
43
44
      meshLevel(0),
      rStartInterior(0),
Thomas Witkowski's avatar
Thomas Witkowski committed
45
      nGlobalOverallInterior(0),
Thomas Witkowski's avatar
Thomas Witkowski committed
46
      printTimings(false),
Thomas Witkowski's avatar
Thomas Witkowski committed
47
      stokesMode(false),
48
      augmentedLagrange(false),
Thomas Witkowski's avatar
Thomas Witkowski committed
49
      pressureComponent(-1)
50
51
52
53
54
55
  {
    FUNCNAME("PetscSolverFeti::PetscSolverFeti()");

    string preconditionerName = "";
    Parameters::get("parallel->solver->precon", preconditionerName);
    if (preconditionerName == "" || preconditionerName == "none") {
56
      MSG("Create FETI-DP solver with no preconditioner!\n");
57
58
      fetiPreconditioner = FETI_NONE;
    } else if (preconditionerName == "dirichlet") {
59
      MSG("Create FETI-DP solver with Dirichlet preconditioner!\n");
60
61
      fetiPreconditioner = FETI_DIRICHLET;
    } else if (preconditionerName == "lumped") {
62
      MSG("Create FETI-DP solver with lumped preconditioner!\n");
63
64
      fetiPreconditioner = FETI_LUMPED;
    } else {
Thomas Witkowski's avatar
Thomas Witkowski committed
65
66
      ERROR_EXIT("Preconditioner \"%s\" not available!\n", 
		 preconditionerName.c_str());
67
    }
Thomas Witkowski's avatar
Thomas Witkowski committed
68
69
70
71
72

    Parameters::get("parallel->feti->schur primal solver", schurPrimalSolver);
    TEST_EXIT(schurPrimalSolver == 0 || schurPrimalSolver == 1)
      ("Wrong solver \"%d\"for the Schur primal complement!\n", 
       schurPrimalSolver);
73
74

    Parameters::get("parallel->multi level test", multiLevelTest);
75
76
    if (multiLevelTest)
      meshLevel = 1;
Thomas Witkowski's avatar
Thomas Witkowski committed
77
78

    Parameters::get("parallel->print timings", printTimings);
79
80

    Parameters::get("parallel->feti->augmented lagrange", augmentedLagrange);
81
82

    Parameters::get("parallel->feti->symmetric", isSymmetric);
83
84
85
  }


86
  void PetscSolverFeti::initialize(vector<const FiniteElemSpace*> feSpaces)
87
  {
88
89
    FUNCNAME("PetscSolverFeti::initialize()");

90
91
92
    TEST_EXIT_DBG(meshLevel + 1 == meshDistributor->getMeshLevelData().getLevelNumber())
      ("Mesh hierarchy does not contain %d levels!\n", meshLevel + 1);

93
    MeshLevelData& levelData = meshDistributor->getMeshLevelData();
94
    vector<const FiniteElemSpace*>& uniqueFe = meshDistributor->getFeSpaces();
95

Thomas Witkowski's avatar
Thomas Witkowski committed
96

Thomas Witkowski's avatar
Thomas Witkowski committed
97
98
99
100
101
102
    stokesMode = false;
    Parameters::get("parallel->feti->stokes mode", stokesMode);
    if (stokesMode) {
      Parameters::get("parallel->feti->pressure component", pressureComponent);
      TEST_EXIT(pressureComponent >= 0)
	("FETI-DP in Stokes mode, no pressure component defined!\n");
Thomas Witkowski's avatar
Thomas Witkowski committed
103
104
    }
			   
Thomas Witkowski's avatar
Thomas Witkowski committed
105
106
    if (subdomain == NULL) {
      subdomain = new PetscSolverGlobalMatrix();
107
      subdomain->setSymmetric(isSymmetric);
108
      subdomain->setHandleDirichletRows(false);
109

110
      if (meshLevel == 0) {
Thomas Witkowski's avatar
Thomas Witkowski committed
111
	subdomain->setMeshDistributor(meshDistributor, 
112
				      mpiCommGlobal, mpiCommLocal);
113
      } else {
Thomas Witkowski's avatar
Thomas Witkowski committed
114
	subdomain->setMeshDistributor(meshDistributor, 
115
116
				      levelData.getMpiComm(meshLevel - 1),
				      levelData.getMpiComm(meshLevel));
Thomas Witkowski's avatar
Thomas Witkowski committed
117
	subdomain->setLevel(meshLevel);
118
119
      }
    }
120

121
122
123
124
    primalDofMap.init(levelData, feSpaces, uniqueFe);   
    dualDofMap.init(levelData, feSpaces, uniqueFe, false);
    localDofMap.init(levelData, feSpaces, uniqueFe, meshLevel != 0);
    lagrangeMap.init(levelData, feSpaces, uniqueFe);
Thomas Witkowski's avatar
Thomas Witkowski committed
125

Thomas Witkowski's avatar
Thomas Witkowski committed
126
    if (stokesMode)
Thomas Witkowski's avatar
Thomas Witkowski committed
127
      interfaceDofMap.init(levelData, feSpaces, uniqueFe);
Thomas Witkowski's avatar
Thomas Witkowski committed
128

129
    if (fetiPreconditioner == FETI_DIRICHLET) {
130
131
132
      TEST_EXIT(meshLevel == 0)
	("Dirichlet preconditioner not yet implemented for multilevel FETI-DP\n");

133
      interiorDofMap.init(levelData, feSpaces, uniqueFe, false);
134
    }
135
136
137
  }


Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
138
139
140
141
142
  void PetscSolverFeti::createDirichletData(Matrix<DOFMatrix*> &mat)
  {
    FUNCNAME("PetscSolverFeti::createDirichletData()");

    int nComponents = mat.getSize();
143
144
    for (int component = 0; component < nComponents; component++) {
      DOFMatrix* dofMat = mat[component][component];
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
145
146
      if (!dofMat)
	continue;
147
148

      dirichletRows[component] = dofMat->getDirichletRows();
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
149
150
151
152
    }
  }


153
154
155
156
  void PetscSolverFeti::createFetiData()
  {
    FUNCNAME("PetscSolverFeti::createFetiData()");

Thomas Witkowski's avatar
Thomas Witkowski committed
157
158
    double timeCounter = MPI::Wtime();

159
160
161
    TEST_EXIT(meshDistributor)("No mesh distributor object defined!\n");
    TEST_EXIT(meshDistributor->getFeSpaces().size() > 0)
      ("No FE space defined in mesh distributor!\n");
162

163
164
    MeshLevelData& levelData = meshDistributor->getMeshLevelData();

165
166
167
168
    primalDofMap.clear();
    dualDofMap.clear();
    lagrangeMap.clear();
    localDofMap.clear();
169
    if (fetiPreconditioner == FETI_DIRICHLET)
170
171
      interiorDofMap.clear();

172
173
    primalDofMap.setDofComm(meshDistributor->getDofComm());
    lagrangeMap.setDofComm(meshDistributor->getDofComm());
174

175
176
    primalDofMap.setMpiComm(levelData.getMpiComm(0), 0);
    dualDofMap.setMpiComm(levelData.getMpiComm(0), 0);
177
    lagrangeMap.setMpiComm(levelData.getMpiComm(0), 0);
178
    localDofMap.setMpiComm(levelData.getMpiComm(meshLevel), meshLevel);
179
    if (fetiPreconditioner == FETI_DIRICHLET)
180
      interiorDofMap.setMpiComm(levelData.getMpiComm(meshLevel), meshLevel);
181

182
183
184
    if (meshLevel == 0)
      localDofMap.setDofComm(meshDistributor->getDofComm());
    else
185
186
      localDofMap.setDofComm(meshDistributor->getDofCommSd());

Thomas Witkowski's avatar
Thomas Witkowski committed
187
    if (stokesMode) {
188
189
190
191
192
      interfaceDofMap.clear();
      interfaceDofMap.setDofComm(meshDistributor->getDofComm());
      interfaceDofMap.setMpiComm(levelData.getMpiComm(0), 0);
    }

193
194
    for (unsigned int i = 0; i < meshDistributor->getComponentSpaces().size(); i++) {
      const FiniteElemSpace *feSpace = meshDistributor->getComponentSpace(i);
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
195
    
Thomas Witkowski's avatar
Thomas Witkowski committed
196
      createPrimals(i, feSpace);  
197

Thomas Witkowski's avatar
Thomas Witkowski committed
198
      createDuals(i, feSpace);
199

Thomas Witkowski's avatar
Thomas Witkowski committed
200
      createInterfaceNodes(i, feSpace);
201

Thomas Witkowski's avatar
Thomas Witkowski committed
202
      createIndexB(i, feSpace);     
203
    }
Thomas Witkowski's avatar
Thomas Witkowski committed
204
205
206
207

    primalDofMap.update();
    dualDofMap.update();
    localDofMap.update();
208
    if (fetiPreconditioner == FETI_DIRICHLET)
209
      interiorDofMap.update();
Thomas Witkowski's avatar
Thomas Witkowski committed
210

Thomas Witkowski's avatar
Thomas Witkowski committed
211
    if (stokesMode)
212
213
      interfaceDofMap.update();

214
215
    for (unsigned int i = 0; i < meshDistributor->getComponentSpaces().size(); i++) {
      const FiniteElemSpace *feSpace = meshDistributor->getComponentSpace(i);
Thomas Witkowski's avatar
Thomas Witkowski committed
216
217
      createLagrange(i, feSpace);
      createAugmentedLagrange(i, feSpace);
218
    }
219

220
221
222
    lagrangeMap.update();


223
224
225
226
227
228
229
230
231
232
233
234
    // === ===

    if (meshLevel == 0) {
      rStartInterior = 0;
      nGlobalOverallInterior = localDofMap.getOverallDofs();
    } else {
      MeshLevelData& levelData = meshDistributor->getMeshLevelData();

      int groupRowsInterior = 0;
      if (levelData.getMpiComm(1).Get_rank() == 0)
	groupRowsInterior = localDofMap.getOverallDofs();

235
      mpi::getDofNumbering(mpiCommGlobal, groupRowsInterior,
236
237
238
239
240
241
242
243
244
			   rStartInterior, nGlobalOverallInterior);

      int tmp = 0;
      if (levelData.getMpiComm(1).Get_rank() == 0)
	tmp = rStartInterior;

      levelData.getMpiComm(1).Allreduce(&tmp, &rStartInterior, 1, MPI_INT, MPI_SUM);
    }

245
    MSG("FETI-DP data created on mesh level %d\n", meshLevel);
246
247
    for (unsigned int i = 0; i < meshDistributor->getComponentSpaces().size(); i++) {
      const FiniteElemSpace *feSpace = meshDistributor->getComponentSpace(i);
248
249

      MSG("FETI-DP data for %d-ith component (FE space %p):\n", i, feSpace);
Thomas Witkowski's avatar
Thomas Witkowski committed
250

251
      if (i == pressureComponent) {
Thomas Witkowski's avatar
Thomas Witkowski committed
252
	MSG("  nRankInterface = %d  nOverallInterface = %d\n",
253
254
	    interfaceDofMap[i].nRankDofs, 
	    interfaceDofMap[i].nOverallDofs);
Thomas Witkowski's avatar
Thomas Witkowski committed
255
      } else {
256
	MSG("  nRankPrimals = %d   nLocalPrimals = %d  nOverallPrimals = %d\n", 
257
258
259
	    primalDofMap[i].nRankDofs, 
	    primalDofMap[i].nLocalDofs,
	    primalDofMap[i].nOverallDofs);
Thomas Witkowski's avatar
Thomas Witkowski committed
260
261
	
	MSG("  nRankDuals = %d  nOverallDuals = %d\n",
262
263
	    dualDofMap[i].nRankDofs, 
	    dualDofMap[i].nOverallDofs);
Thomas Witkowski's avatar
Thomas Witkowski committed
264
265
	
	MSG("  nRankLagrange = %d  nOverallLagrange = %d\n",
266
267
	    lagrangeMap[i].nRankDofs, 
	    lagrangeMap[i].nOverallDofs);
Thomas Witkowski's avatar
Thomas Witkowski committed
268
      }
Thomas Witkowski's avatar
Thomas Witkowski committed
269
    }
270

Thomas Witkowski's avatar
Thomas Witkowski committed
271
    subdomain->setDofMapping(&localDofMap);
Thomas Witkowski's avatar
Thomas Witkowski committed
272
273
274
    subdomain->setCoarseSpaceDofMapping(&primalDofMap); 
    if (stokesMode)
      subdomain->setCoarseSpaceDofMapping(&interfaceDofMap, pressureComponent);
Thomas Witkowski's avatar
Thomas Witkowski committed
275
276

    if (printTimings) {
Thomas Witkowski's avatar
BLUB    
Thomas Witkowski committed
277
      MPI::COMM_WORLD.Barrier();
Thomas Witkowski's avatar
Thomas Witkowski committed
278
      timeCounter = MPI::Wtime() - timeCounter;
279
      MSG("FETI-DP timing 01: %.5f seconds (creation of basic data structures)\n", 
Thomas Witkowski's avatar
Thomas Witkowski committed
280
281
	  timeCounter);
    }
282
283
284
  }


Thomas Witkowski's avatar
Thomas Witkowski committed
285
286
  void PetscSolverFeti::createPrimals(int component,
				      const FiniteElemSpace *feSpace)
Thomas Witkowski's avatar
Thomas Witkowski committed
287
  {
288
    FUNCNAME("PetscSolverFeti::createPrimals()");  
289

290
    if (component == pressureComponent)
291
292
      return;

293
294
295
    // === Define all vertices on the interior boundaries of the macro mesh ===
    // === to be primal variables.                                          ===

Thomas Witkowski's avatar
Thomas Witkowski committed
296
    // Set of DOF indices that are considered to be primal variables.
297
    DofContainerSet& vertices = 
298
      meshDistributor->getBoundaryDofInfo(feSpace, meshLevel).geoDofs[VERTEX];
299
300

    DofIndexSet primals;
301
    for (DofContainerSet::iterator it = vertices.begin(); 
302
	 it != vertices.end(); ++it) {
303
      
304
      if (dirichletRows[component].count(**it))
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
305
	continue;
Thomas Witkowski's avatar
Thomas Witkowski committed
306

Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
307
308
      if (meshLevel == 0) {
	primals.insert(**it);
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
309
      } else {
310
	double e = 1e-8;
Thomas Witkowski's avatar
Thomas Witkowski committed
311
312
313
	WorldVector<double> c;
	feSpace->getMesh()->getDofIndexCoords(*it, feSpace, c);

Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
314
315
316
317
318
319
320
	if (fabs(c[0]) < e || fabs(c[1]) < e ||
	    fabs(c[0] - 25.0) < e || fabs(c[1] - 25.0) < e ||
	    (fabs(c[0] - 12.5) < e && fabs(c[1] - 12.5) < e)) {
	  MSG("PRIMAL COORD %f %f\n", c[0], c[1]);
	  primals.insert(**it);
	}
      }
321
    }
322

323
324
325
326

    // === Calculate the number of primals that are owned by the rank and ===
    // === create local indices of the primals starting at zero.          ===

327
    for (DofIndexSet::iterator it = primals.begin(); it != primals.end(); ++it)
328
      if (meshDistributor->getDofMap()[feSpace].isRankDof(*it)) {
Thomas Witkowski's avatar
Thomas Witkowski committed
329
	primalDofMap[component].insertRankDof(*it);
330
      } else
Thomas Witkowski's avatar
Thomas Witkowski committed
331
  	primalDofMap[component].insertNonRankDof(*it);
332
333
334
  }


Thomas Witkowski's avatar
Thomas Witkowski committed
335
336
  void PetscSolverFeti::createDuals(int component,
				    const FiniteElemSpace *feSpace)
337
338
  {
    FUNCNAME("PetscSolverFeti::createDuals()");
339

340
    if (component == pressureComponent)
341
342
      return;

343
344
345
    // === Create global index of the dual nodes on each rank. ===

    DofContainer allBoundaryDofs;
346
    meshDistributor->getAllBoundaryDofs(feSpace, meshLevel, allBoundaryDofs);
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
347
    
348
    for (DofContainer::iterator it = allBoundaryDofs.begin();
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
349
	 it != allBoundaryDofs.end(); ++it) {
350
      if (dirichletRows[component].count(**it))
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
351
352
	continue;

Thomas Witkowski's avatar
Thomas Witkowski committed
353
      if (isPrimal(component, **it))
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
354
355
356
	continue;

      if (meshLevel == 0) {
Thomas Witkowski's avatar
Thomas Witkowski committed
357
	dualDofMap[component].insertRankDof(**it);
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
358
359
      } else {
	if (meshDistributor->getDofMapSd()[feSpace].isRankDof(**it))
Thomas Witkowski's avatar
Thomas Witkowski committed
360
	  dualDofMap[component].insertRankDof(**it);
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
361
362
      }	  
    }
363
364
365
  }

  
Thomas Witkowski's avatar
Thomas Witkowski committed
366
367
  void PetscSolverFeti::createInterfaceNodes(int component,
					     const FiniteElemSpace *feSpace)
368
369
370
  {
    FUNCNAME("PetscSolverFeti::createInterfaceNodes()");

371
    if (component != pressureComponent)
372
373
374
375
376
377
      return;

    DofContainer allBoundaryDofs;
    meshDistributor->getAllBoundaryDofs(feSpace, meshLevel, allBoundaryDofs);

    for (DofContainer::iterator it = allBoundaryDofs.begin();
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
378
	 it != allBoundaryDofs.end(); ++it) {
379
      if (dirichletRows[component].count(**it))
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
380
381
	continue;      
      
382
      if (meshDistributor->getDofMap()[feSpace].isRankDof(**it))
Thomas Witkowski's avatar
Thomas Witkowski committed
383
	interfaceDofMap[component].insertRankDof(**it);
384
      else
Thomas Witkowski's avatar
Thomas Witkowski committed
385
	interfaceDofMap[component].insertNonRankDof(**it);      
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
386
    }
387
388
389
  }


Thomas Witkowski's avatar
Thomas Witkowski committed
390
391
  void PetscSolverFeti::createLagrange(int component,
				       const FiniteElemSpace *feSpace)
392
393
394
  {
    FUNCNAME("PetscSolverFeti::createLagrange()");

395
    if (component == pressureComponent)
396
397
      return;

398
399
    boundaryDofRanks[feSpace].clear();

Thomas Witkowski's avatar
Thomas Witkowski committed
400
401
402
    // Stores for all rank owned communication DOFs, if the counterpart is
    // a rank owned DOF in its subdomain. Thus, the following map stores to
    // each rank number all DOFs that fulfill this requirenment.
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
403
    map<int, std::set<DegreeOfFreedom> > sdRankDofs;
404

Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
405
    if (meshLevel > 0) {
406
      StdMpi<vector<int> > stdMpi(mpiCommGlobal);
407
408
409
410
411
412
413
414
415

      for (DofComm::Iterator it(meshDistributor->getDofComm().getRecvDofs(), 
				meshLevel, feSpace);
	   !it.end(); it.nextRank()) {

	vector<int> subdomainRankDofs;
	subdomainRankDofs.reserve(it.getDofs().size());

	for (; !it.endDofIter(); it.nextDof()) {
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
416
	  if (meshDistributor->getDofMapSd()[feSpace].isRankDof(it.getDofIndex()))
417
	    subdomainRankDofs.push_back(1);
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
418
	  else
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
	    subdomainRankDofs.push_back(0);
	}

	stdMpi.send(it.getRank(), subdomainRankDofs);
      }	     

      for (DofComm::Iterator it(meshDistributor->getDofComm().getSendDofs(), 
				meshLevel, feSpace);
	   !it.end(); it.nextRank())
	stdMpi.recv(it.getRank());

      stdMpi.startCommunication();

      for (DofComm::Iterator it(meshDistributor->getDofComm().getSendDofs(), 
				meshLevel, feSpace); 
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
434
435
	   !it.end(); it.nextRank())
	for (; !it.endDofIter(); it.nextDof())
Thomas Witkowski's avatar
Thomas Witkowski committed
436
	  if (!isPrimal(component, it.getDofIndex()))
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
437
438
439
	    if (stdMpi.getRecvData(it.getRank())[it.getDofCounter()] == 1)
	      sdRankDofs[it.getRank()].insert(it.getDofIndex());
    }
440

Thomas Witkowski's avatar
Thomas Witkowski committed
441
    if (dualDofMap[component].nLocalDofs == 0)
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
442
443
444
445
446
447
      return;


    // === Create for each dual node that is owned by the rank, the set ===
    // === of ranks that contain this node (denoted by W(x_j)).         ===

448
    int mpiRank = meshDistributor->getMpiRank();
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
449
450
451
452
    for (DofComm::Iterator it(meshDistributor->getDofComm().getSendDofs(), 
			      meshLevel, feSpace); 
	 !it.end(); it.nextRank()) {
      for (; !it.endDofIter(); it.nextDof()) {
Thomas Witkowski's avatar
Thomas Witkowski committed
453
	if (!isPrimal(component, it.getDofIndex())) {
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
454
455
	  boundaryDofRanks[feSpace][it.getDofIndex()].insert(mpiRank);

456
 	  if (meshLevel == 0 ||
Thomas Witkowski's avatar
Thomas Witkowski committed
457
 	      (meshLevel > 0 && sdRankDofs[it.getRank()].count(it.getDofIndex())))
458
	    boundaryDofRanks[feSpace][it.getDofIndex()].insert(it.getRank());	  
459
460
461
462
	}
      }
    }

463
464
465
466

    // === Communicate these sets for all rank owned dual nodes to other ===
    // === ranks that also have this node.                               ===

467
    StdMpi<vector<std::set<int> > > stdMpi(meshDistributor->getMpiComm());
468

469
    for (DofComm::Iterator it(meshDistributor->getDofComm().getSendDofs(), meshLevel, feSpace);
470
471
	 !it.end(); it.nextRank())
      for (; !it.endDofIter(); it.nextDof())
Thomas Witkowski's avatar
Thomas Witkowski committed
472
	if (!isPrimal(component, it.getDofIndex()))
473
474
475
 	  if (meshLevel == 0 ||
 	      (meshLevel > 0 && sdRankDofs[it.getRank()].count(it.getDofIndex())))
	    stdMpi.getSendData(it.getRank()).push_back(boundaryDofRanks[feSpace][it.getDofIndex()]);
476
477
478

    stdMpi.updateSendDataSize();

479
    for (DofComm::Iterator it(meshDistributor->getDofComm().getRecvDofs(), meshLevel, feSpace); 
480
	 !it.end(); it.nextRank()) {
481
      bool recvFromRank = false;
482
      for (; !it.endDofIter(); it.nextDof()) {
Thomas Witkowski's avatar
Thomas Witkowski committed
483
	if (!isPrimal(component, it.getDofIndex())) {
484
485
486
 	  if (meshLevel == 0 ||
 	      (meshLevel > 0 && 
 	       meshDistributor->getDofMapSd()[feSpace].isRankDof(it.getDofIndex()))) {
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
487
488
489
	    recvFromRank = true;
	    break;
	  }
490
	}
491
      }
492
493

      if (recvFromRank)
494
	stdMpi.recv(it.getRank());
495
    }
496

497
498
    stdMpi.startCommunication();

499
    for (DofComm::Iterator it(meshDistributor->getDofComm().getRecvDofs(), meshLevel, feSpace); 
500
	 !it.end(); it.nextRank()) {
501
      int i = 0;
502
      for (; !it.endDofIter(); it.nextDof())
Thomas Witkowski's avatar
Thomas Witkowski committed
503
	if (!isPrimal(component, it.getDofIndex()))
504
505
506
 	  if (meshLevel == 0 ||
 	      (meshLevel > 0 && 
 	       meshDistributor->getDofMapSd()[feSpace].isRankDof(it.getDofIndex())))	    
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
507
508
	    boundaryDofRanks[feSpace][it.getDofIndex()] = 
	      stdMpi.getRecvData(it.getRank())[i++];
509
	  else
Thomas Witkowski's avatar
Thomas Witkowski committed
510
	    lagrangeMap[component].insertNonRankDof(it.getDofIndex());
511
512
    }

Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
513

514
515
516
    // === Reserve for each dual node, on the rank that owns this node, the ===
    // === appropriate number of Lagrange constraints.                      ===

517
    int nRankLagrange = 0;
518
    DofMap& dualMap = dualDofMap[component].getMap();
519
    for (DofMap::iterator it = dualMap.begin(); it != dualMap.end(); ++it) {
520
      if (meshDistributor->getDofMap()[feSpace].isRankDof(it->first)) {
Thomas Witkowski's avatar
Thomas Witkowski committed
521
	lagrangeMap[component].insertRankDof(it->first, nRankLagrange);
522
	int degree = boundaryDofRanks[feSpace][it->first].size();
523
	nRankLagrange += (degree * (degree - 1)) / 2;
Thomas Witkowski's avatar
Thomas Witkowski committed
524
      } else {
Thomas Witkowski's avatar
Thomas Witkowski committed
525
	lagrangeMap[component].insertNonRankDof(it->first);
526
527
      }
    }
Thomas Witkowski's avatar
Thomas Witkowski committed
528
    lagrangeMap[component].nRankDofs = nRankLagrange;
529
530
531
  }


Thomas Witkowski's avatar
Thomas Witkowski committed
532
533
  void PetscSolverFeti::createAugmentedLagrange(int component,
						const FiniteElemSpace *feSpace)
534
535
536
537
538
539
540
541
  {
    FUNCNAME("PetscSolverFeti::createAugmentedLagrange()");

    if (!augmentedLagrange)
      return;
  }


Thomas Witkowski's avatar
Thomas Witkowski committed
542
543
  void PetscSolverFeti::createIndexB(int component,
				     const FiniteElemSpace *feSpace)
544
  {
545
    FUNCNAME("PetscSolverFeti::createIndexB()");
546

547
    DOFAdmin* admin = feSpace->getAdmin();
548
549
550
551

    // === To ensure that all interior node on each rank are listen first in ===
    // === the global index of all B nodes, insert all interior nodes first, ===
    // === without defining a correct index.                                 ===
552

553
    int nLocalInterior = 0;    
554
    for (int i = 0; i < admin->getUsedSize(); i++) {
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
555
      if (admin->isDofFree(i) ||
Thomas Witkowski's avatar
Thomas Witkowski committed
556
557
558
	  isPrimal(component, i) ||
	  isDual(component, i) ||
	  isInterface(component, i) ||
559
	  dirichletRows[component].count(i))
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
560
	continue;      
561

Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
562
      if (meshLevel == 0) {
Thomas Witkowski's avatar
Thomas Witkowski committed
563
	localDofMap[component].insertRankDof(i, nLocalInterior);
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
564
565
	
	if (fetiPreconditioner == FETI_DIRICHLET)
566
	  interiorDofMap[component].insertRankDof(i, nLocalInterior);
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
567
568
569
570
	
	nLocalInterior++;	
      } else {
	if (meshDistributor->getDofMapSd()[feSpace].isRankDof(i))
Thomas Witkowski's avatar
Thomas Witkowski committed
571
	  localDofMap[component].insertRankDof(i);
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
572
	else
Thomas Witkowski's avatar
Thomas Witkowski committed
573
	  localDofMap[component].insertNonRankDof(i);
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
574
575
576
	
	TEST_EXIT_DBG(fetiPreconditioner == FETI_NONE)
	  ("Not yet implemnted!\n");	
577
      }
578
    }
Thomas Witkowski's avatar
FETI-DP    
Thomas Witkowski committed
579
    
580
581
    // === And finally, add the global indicies of all dual nodes. ===

582
583
    for (DofMap::iterator it = dualDofMap[component].getMap().begin();
	 it != dualDofMap[component].getMap().end(); ++it) {
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
584
      if (meshLevel == 0) {
Thomas Witkowski's avatar
Thomas Witkowski committed
585
	localDofMap[component].insertRankDof(it->first);
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
586
      } else {
587
	if (meshDistributor->getDofMapSd()[feSpace].isRankDof(it->first))
Thomas Witkowski's avatar
Thomas Witkowski committed
588
	  localDofMap[component].insertRankDof(it->first);
589
	else 
Thomas Witkowski's avatar
Thomas Witkowski committed
590
	  localDofMap[component].insertNonRankDof(it->first);
591
      }
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
592
    }
593
594
595
  }


596
  void PetscSolverFeti::createMatLagrange(vector<const FiniteElemSpace*> &feSpaces)
597
598
599
  {
    FUNCNAME("PetscSolverFeti::createMatLagrange()");

Thomas Witkowski's avatar
Thomas Witkowski committed
600
    double wtime = MPI::Wtime();
601
    int mpiRank = meshDistributor->getMpiRank();
Thomas Witkowski's avatar
Thomas Witkowski committed
602

603
604
    // === Create distributed matrix for Lagrange constraints. ===

605
606
607
608
609
    MatCreateAIJ(mpiCommGlobal,
		 lagrangeMap.getRankDofs(), localDofMap.getRankDofs(),
		 lagrangeMap.getOverallDofs(), nGlobalOverallInterior,
		 2, PETSC_NULL, 2, PETSC_NULL,
		 &mat_lagrange);
610
    MatSetOption(mat_lagrange, MAT_NEW_NONZERO_ALLOCATION_ERR, PETSC_FALSE);
611

612
613
614
    Vec vec_scale_lagrange;
    lagrangeMap.createVec(vec_scale_lagrange);

615
616
617
618
619
620
621
    // === Create for all duals the corresponding Lagrange constraints. On ===
    // === each rank we traverse all pairs (n, m) of ranks, with n < m,    ===
    // === that contain this node. If the current rank number is r, and    ===
    // === n == r, the rank sets 1.0 for the corresponding constraint, if  ===
    // === m == r, than the rank sets -1.0 for the corresponding           ===
    // === constraint.                                                     ===

622
623
    for (unsigned int component = 0; component < feSpaces.size(); component++) {
      DofMap &dualMap = dualDofMap[component].getMap();
624

625
      for (DofMap::iterator it = dualMap.begin(); it != dualMap.end(); ++it) {
626
	TEST_EXIT_DBG(boundaryDofRanks[feSpaces[component]].count(it->first))
Thomas Witkowski's avatar
Thomas Witkowski committed
627
628
629
	  ("Should not happen!\n");
	
	// Global index of the first Lagrange constriant for this node.
630
	int index = lagrangeMap.getMatIndex(component, it->first);
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
631

Thomas Witkowski's avatar
Thomas Witkowski committed
632
	// Copy set of all ranks that contain this dual node.
633
634
	vector<int> W(boundaryDofRanks[feSpaces[component]][it->first].begin(), 
		      boundaryDofRanks[feSpaces[component]][it->first].end());
Thomas Witkowski's avatar
Thomas Witkowski committed
635
636
	// Number of ranks that contain this dual node.
	int degree = W.size();
Thomas Witkowski's avatar
Blub    
Thomas Witkowski committed
637
638

	TEST_EXIT_DBG(degree > 1)("Should not happen!\n");
Thomas Witkowski's avatar
Thomas Witkowski committed
639
	
640
	int counter = 0;
Thomas Witkowski's avatar
Thomas Witkowski committed
641
642
643
	for (int i = 0; i < degree; i++) {
	  for (int j = i + 1; j < degree; j++) {
	    if (W[i] == mpiRank || W[j] == mpiRank) {
644
645
	      MatSetValue(mat_lagrange, 
			  index + counter, 
646
			  localDofMap.getMatIndex(component, it->first) + rStartInterior,
647
648
			  (W[i] == mpiRank ? 1.0 : -1.0),
			  INSERT_VALUES);
649
	    }
650
651
652
653
654
655
656
	    counter++;
	  }
	}

	// === Create scaling factors for scaling the lagrange matrix, which ===
	// === is required for FETI-DP preconditioners.                      ===
	
657
	if (meshDistributor->getDofMap()[feSpaces[component]].isRankDof(it->first)) {
658
659
660
661
662
663
	  int nConstraints = (degree * (degree - 1)) / 2;
	  for (int i = 0; i < nConstraints; i++) {
	    VecSetValue(vec_scale_lagrange,
			index + i,
			1.0 / static_cast<double>(degree),
			INSERT_VALUES);
664
665
666
667
668
669
670
	  }
	}
      }
    }

    MatAssemblyBegin(mat_lagrange, MAT_FINAL_ASSEMBLY);
    MatAssemblyEnd(mat_lagrange, MAT_FINAL_ASSEMBLY);
Thomas Witkowski's avatar
Thomas Witkowski committed
671

672

Thomas Witkowski's avatar
So on    
Thomas Witkowski committed
673
674
675
676
677
678
679
680
681
682
683
684
    int nZeroRows = PetscSolverFetiDebug::testZeroRows(mat_lagrange);
    int m,n;
    MatGetSize(mat_lagrange, &m ,&n);
    MSG("Lagrange matrix has %d zero rows and global size of %d %d!\n", nZeroRows, m, n);

    PetscViewer petscView;
    PetscViewerBinaryOpen(PETSC_COMM_WORLD, "lagrange.mat", 
			  FILE_MODE_WRITE, &petscView);
    MatView(mat_lagrange, petscView);
    PetscViewerDestroy(&petscView);


685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
    // === If required, create \ref mat_lagrange_scaled ===

    VecAssemblyBegin(vec_scale_lagrange);
    VecAssemblyEnd(vec_scale_lagrange);

    if (fetiPreconditioner != FETI_NONE || stokesMode) {
      MatDuplicate(mat_lagrange, MAT_COPY_VALUES, &mat_lagrange_scaled);
      MatDiagonalScale(mat_lagrange_scaled, vec_scale_lagrange, PETSC_NULL);
    }

    VecDestroy(&vec_scale_lagrange);


    // === Print final timings. ===

Thomas Witkowski's avatar
BLUB    
Thomas Witkowski committed
700
701
    if (printTimings) {
      MPI::COMM_WORLD.Barrier();
Thomas Witkowski's avatar
Thomas Witkowski committed
702
703
      MSG("FETI-DP timing 05: %.5f seconds (creation of lagrange constraint matrix)\n", 
	  MPI::Wtime() - wtime);
Thomas Witkowski's avatar
BLUB    
Thomas Witkowski committed
704
    }
705
706
  }

707

Thomas Witkowski's avatar
Thomas Witkowski committed
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
  bool PetscSolverFeti::testWirebasketEdge(BoundaryObject &edge, const FiniteElemSpace *feSpace)
  {
    Element *el = edge.el;
    int i0 = el->getVertexOfEdge(edge.ithObj, 0);
    int i1 = el->getVertexOfEdge(edge.ithObj, 1);
    DegreeOfFreedom d0 = el->getDof(i0, 0);
    DegreeOfFreedom d1 = el->getDof(i1, 0);
    WorldVector<double> c0, c1;
    el->getMesh()->getDofIndexCoords(d0, feSpace, c0);
    el->getMesh()->getDofIndexCoords(d1, feSpace, c1);
    bool xe = fabs(c0[0] - c1[0]) < 1e-8;
    bool ye = fabs(c0[1] - c1[1]) < 1e-8;
    bool ze = fabs(c0[2] - c1[2]) < 1e-8;
    int counter = static_cast<int>(xe) + static_cast<int>(ye) + static_cast<int>(ze);
    return (counter == 2);
  }
724

725

726
727
728
729
730
731
732
733
734
735
736
  void PetscSolverFeti::createMatAugmentedLagrange(vector<const FiniteElemSpace*> &feSpaces)
  {
    FUNCNAME("PetscSolverFeti::createMatAugmentedLagrange()");

    if (!augmentedLagrange)
      return;

    double wtime = MPI::Wtime();

    nOverallEdges = 0;
    InteriorBoundary &intBound = meshDistributor->getIntBoundary();
Thomas Witkowski's avatar
Thomas Witkowski committed
737
    std::set<BoundaryObject> allEdges;
738
    for (InteriorBoundary::iterator it(intBound.getOwn()); !it.end(); ++it) {
739
740
741
      if ((it->rankObj.subObj == FACE ||
	   (it->rankObj.subObj == EDGE && 
	    testWirebasketEdge(it->rankObj, feSpaces[0]))) && 
742
743
744
745
746
	  allEdges.count(it->rankObj) == 0) {
	bool dirichletOnlyEdge = true;

	DofContainer edgeDofs;
	it->rankObj.el->getAllDofs(feSpaces[0], it->rankObj, edgeDofs);
747
	
748
749
	for (DofContainer::iterator dit = edgeDofs.begin();
	     dit != edgeDofs.end(); ++dit) {
750
	  if (dirichletRows[0].count(**dit) == 0) {
751
752
753
754
755
756
757
758
759
	    dirichletOnlyEdge = false;
	    break;
	  }
	}

	if (!dirichletOnlyEdge)
	  allEdges.insert(it->rankObj);
      }
    }
Thomas Witkowski's avatar
Thomas Witkowski committed
760
761

    nRankEdges = allEdges.size();    
762
763
764
765
    int rStartEdges = 0;
    mpi::getDofNumbering(mpiCommGlobal, nRankEdges, rStartEdges, nOverallEdges);

    MSG("nRankEdges = %d, nOverallEdges = %d\n", nRankEdges, nOverallEdges);
766
    
767
768
769
770
771
    nRankEdges *= feSpaces.size();
    rStartEdges *= feSpaces.size();
    nOverallEdges *= feSpaces.size();

    MatCreateAIJ(mpiCommGlobal,
772
773
		 nRankEdges, lagrangeMap.getRankDofs(),
		 nOverallEdges, lagrangeMap.getOverallDofs(),
774
		 2, PETSC_NULL, 2, PETSC_NULL, 
775
776
777
		 &mat_augmented_lagrange);
    MatSetOption(mat_augmented_lagrange, MAT_NEW_NONZERO_ALLOCATION_ERR, PETSC_FALSE);

778
    int rowCounter = rStartEdges;
Thomas Witkowski's avatar
Thomas Witkowski committed
779
780
    for (std::set<BoundaryObject>::iterator edgeIt = allEdges.begin(); 
	 edgeIt != allEdges.end(); ++edgeIt) {
Thomas Witkowski's avatar
Thomas Witkowski committed
781
      for (int component = 0; component < feSpaces.size(); component++) {
Thomas Witkowski's avatar
Thomas Witkowski committed
782
	DofContainer edgeDofs;
Thomas Witkowski's avatar
Thomas Witkowski committed
783
	edgeIt->el->getAllDofs(feSpaces[component], *edgeIt, edgeDofs);
Thomas Witkowski's avatar
Thomas Witkowski committed
784
785
786
	
	for (DofContainer::iterator it = edgeDofs.begin();
	     it != edgeDofs.end(); ++it) {
Thomas Witkowski's avatar
Thomas Witkowski committed
787
	  TEST_EXIT_DBG(isPrimal(component, **it) == false)
Thomas Witkowski's avatar
Thomas Witkowski committed
788
789
	    ("Should not be primal!\n");
	  
790
	  if (dirichletRows[component].count(**it))
Thomas Witkowski's avatar
Thomas Witkowski committed
791
792
	    continue;
	  
Thomas Witkowski's avatar
Thomas Witkowski committed
793
	  int col = lagrangeMap.getMatIndex(component, **it);
Thomas Witkowski's avatar
Thomas Witkowski committed
794
795
	  double value = 1.0;
	  MatSetValue(mat_augmented_lagrange, rowCounter, col, value, INSERT_VALUES);
796
	}
Thomas Witkowski's avatar
Thomas Witkowski committed
797
798
799
	
	rowCounter++;
      }      
800
801
802
803
804
    }

    MatAssemblyBegin(mat_augmented_lagrange, MAT_FINAL_ASSEMBLY);
    MatAssemblyEnd(mat_augmented_lagrange, MAT_FINAL_ASSEMBLY);

Thomas Witkowski's avatar
So on    
Thomas Witkowski committed
805
806
807
808
809
    int nZeroRows = PetscSolverFetiDebug::testZeroRows(mat_augmented_lagrange);
    int m,n;
    MatGetSize(mat_augmented_lagrange, &m ,&n);
    MSG("Augmented lagrange matrix has %d zero rows and global size of %d %d!\n", nZeroRows, m, n);

810
811
812
813
814
815
816
817
    if (printTimings) {
      MPI::COMM_WORLD.Barrier();
      MSG("FETI-DP timing 05a: %.5f seconds (creation of augmented lagrange constraint matrix)\n", 
	  MPI::Wtime() - wtime);
    }
  }


818
  void PetscSolverFeti::createSchurPrimalKsp(vector<const FiniteElemSpace*> &feSpaces)
819
  {
820
    FUNCNAME("PetscSolverFeti::createSchurPrimalKsp()");
821

Thomas Witkowski's avatar
Thomas Witkowski committed
822
    if (schurPrimalSolver == 0) {
823
824
      MSG("Create iterative schur primal solver!\n");

825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
      if (augmentedLagrange == false) {
	schurPrimalData.subSolver = subdomain;
	
	localDofMap.createVec(schurPrimalData.tmp_vec_b, nGlobalOverallInterior);
	primalDofMap.createVec(schurPrimalData.tmp_vec_primal);
	
	MatCreateShell(mpiCommGlobal,
		       primalDofMap.getRankDofs(), 
		       primalDofMap.getRankDofs(), 
		       primalDofMap.getOverallDofs(), 
		       primalDofMap.getOverallDofs(),
		       &schurPrimalData, 
		       &mat_schur_primal);
	MatShellSetOperation(mat_schur_primal, MATOP_MULT, 
			     (void(*)(void))petscMultMatSchurPrimal);	
      } else {
	schurPrimalAugmentedData.subSolver = subdomain;
842
	schurPrimalAugmentedData.nestedVec = true;
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861

	localDofMap.createVec(schurPrimalAugmentedData.tmp_vec_b0, nGlobalOverallInterior);
	localDofMap.createVec(schurPrimalAugmentedData.tmp_vec_b1, nGlobalOverallInterior);
	primalDofMap.createVec(schurPrimalAugmentedData.tmp_vec_primal);
	lagrangeMap.createVec(schurPrimalAugmentedData.tmp_vec_lagrange);

	schurPrimalAugmentedData.mat_lagrange = &mat_lagrange;
	schurPrimalAugmentedData.mat_augmented_lagrange = &mat_augmented_lagrange;

	MatCreateShell(mpiCommGlobal,
		       primalDofMap.getRankDofs() + nRankEdges, 
		       primalDofMap.getRankDofs() + nRankEdges, 
		       primalDofMap.getOverallDofs() + nOverallEdges, 
		       primalDofMap.getOverallDofs() + nOverallEdges,
		       &schurPrimalAugmentedData, 
		       &mat_schur_primal);
	MatShellSetOperation(mat_schur_primal, MATOP_MULT, 
			     (void(*)(void))petscMultMatSchurPrimalAugmented);
      }
Thomas Witkowski's avatar
Thomas Witkowski committed
862

863
      KSPCreate(mpiCommGlobal, &ksp_schur_primal);
Thomas Witkowski's avatar
Thomas Witkowski committed
864
      KSPSetOperators(ksp_schur_primal, mat_schur_primal, mat_schur_primal, SAME_NONZERO_PATTERN);
865
866
      KSPSetOptionsPrefix(ksp_schur_primal, "schur_primal_");
      KSPSetType(ksp_schur_primal, KSPGMRES);
Thomas Witkowski's avatar
Thomas Witkowski committed
867
868
      KSPSetFromOptions(ksp_schur_primal);
    } else {
869
870
      MSG("Create direct schur primal solver!\n");

871
872
      double wtime = MPI::Wtime();

873
874
875
      TEST_EXIT_DBG(meshLevel == 0)
	("Does not support for multilevel, check usage of localDofMap.\n");

876

877
      // === Create explicit matrix representation of the Schur primal system. ===
878

879
880
881
882
      if (!augmentedLagrange)
	createMatExplicitSchurPrimal();
      else
	createMatExplicitAugmentedSchurPrimal();
883
884
885


      // === Create KSP solver object and set appropriate solver options. ====
886

887
      KSPCreate(mpiCommGlobal, &ksp_schur_primal);
888
      KSPSetOperators(ksp_schur_primal, mat_schur_primal, mat_schur_primal,
889
		      SAME_NONZERO_PATTERN);
890
891
892
893
894
895
      KSPSetOptionsPrefix(ksp_schur_primal, "schur_primal_");
      KSPSetType(ksp_schur_primal, KSPPREONLY);
      PC pc_schur_primal;      
      KSPGetPC(ksp_schur_primal, &pc_schur_primal);
      PCSetType(pc_schur_primal, PCLU);
      PCFactorSetMatSolverPackage(pc_schur_primal, MATSOLVERMUMPS);
896
      KSPSetFromOptions(ksp_schur_primal);
Thomas Witkowski's avatar
Thomas Witkowski committed
897

898
899
900

      // === And finally print timings, if required. ===

Thomas Witkowski's avatar
Thomas Witkowski committed
901
      if (printTimings) {
Thomas Witkowski's avatar
BLUB    
Thomas Witkowski committed
902
	MPI::COMM_WORLD.Barrier();
Thomas Witkowski's avatar
Thomas Witkowski committed
903
904
905
906
907
908
909
910
911
912
	MatInfo minfo;
	MatGetInfo(mat_schur_primal, MAT_GLOBAL_SUM, &minfo);
	MSG("Schur primal matrix nnz = %f\n", minfo.nz_used);
	
	MSG("FETI-DP timing 06: %.5f seconds (creation of schur primal matrix)\n",
	    MPI::Wtime() - wtime);

	wtime = MPI::Wtime();
	KSPSetUp(ksp_schur_primal);
	KSPSetUpOnBlocks(ksp_schur_primal);
Thomas Witkowski's avatar
BLUB    
Thomas Witkowski committed
913
	MPI::COMM_WORLD.Barrier();
Thomas Witkowski's avatar
Thomas Witkowski committed
914
915
916
	MSG("FETI-DP timing 07: %.5f seconds (factorization of primal schur matrix).\n",
	    MPI::Wtime() - wtime);
      }
Thomas Witkowski's avatar
Thomas Witkowski committed
917
    }
918
919
920
  }


921
922
923
924
925
926
927
928
929
930
931
932
  void PetscSolverFeti::createMatExplicitSchurPrimal()
  {
    FUNCNAME("PetscSolverFeti::createMatExplicitSchurPrimal()");

    int creationMode = 0;
    Parameters::get("parallel->feti->schur primal creation mode", creationMode);
    if (creationMode == 0) {
      // matK = inv(A_BB) A_BPi
      Mat matK;
      petsc_helper::blockMatMatSolve(subdomain->getSolver(), 
				     subdomain->getMatInteriorCoarse(),
				     matK);
933
     
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960