MeshDistributor.h 24.7 KB
Newer Older
1
2
3
4
// ============================================================================
// ==                                                                        ==
// == AMDiS - Adaptive multidimensional simulations                          ==
// ==                                                                        ==
5
// ==  http://www.amdis-fem.org                                              ==
6
7
// ==                                                                        ==
// ============================================================================
8
9
10
11
12
13
14
15
16
17
18
19
//
// 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.


20

21
/** \file MeshDistributor.h */
22

23
24
#ifndef AMDIS_MESHDISTRIBUTOR_H
#define AMDIS_MESHDISTRIBUTOR_H
25
26


Thomas Witkowski's avatar
Thomas Witkowski committed
27
#include <mpi.h>
28
#include "parallel/DofComm.h"
29
#include "parallel/ElementObjectDatabase.h"
30
#include "parallel/ParallelTypes.h"
31
#include "parallel/MeshPartitioner.h"
Thomas Witkowski's avatar
Thomas Witkowski committed
32
#include "parallel/InteriorBoundary.h"
33
#include "parallel/PeriodicMap.h"
34
#include "parallel/StdMpi.h"
35
#include "AMDiS_fwd.h"
36
#include "Containers.h"
Thomas Witkowski's avatar
Thomas Witkowski committed
37
#include "Global.h"
38
39
#include "ProblemTimeInterface.h"
#include "ProblemIterationInterface.h"
40
#include "FiniteElemSpace.h"
41
#include "Serializer.h"
Thomas Witkowski's avatar
Thomas Witkowski committed
42
#include "BoundaryManager.h"
43
#include "SystemVector.h"
44

45
namespace AMDiS {
46
47

  using namespace std;
Thomas Witkowski's avatar
Thomas Witkowski committed
48
49
50
51


  struct BoundaryDofInfo
  {
52
    map<GeoIndex, DofContainerSet> geoDofs;
Thomas Witkowski's avatar
Thomas Witkowski committed
53
54
  };

55
56
57
58
59
60
61
62
63
64
65
66

  struct DofData
  {
    /// Number of DOFs in the rank mesh.
    int nRankDofs;

    /// Is the index of the first global DOF index, which is owned by the rank.
    int rStartDofs;

    /// Number of DOFs in the whole domain.
    int nOverallDofs;

67
68
69
    /// Maps all DOFs in ranks partition to a bool value. If it is true, the DOF 
    /// is owned by the rank. Otherwise, its an interior boundary DOF that is 
    /// owned by another rank.
70
71
72
    DofIndexToBool isRankDof;

    /// Maps local to global dof indices.
Thomas Witkowski's avatar
Thomas Witkowski committed
73
    DofMap mapDofToGlobal;
74
75

    /// Maps local dof indices to real dof indices.
Thomas Witkowski's avatar
Thomas Witkowski committed
76
    DofMap mapLocalToDof;
77
  };
78
79


80
  class MeshDistributor
81
  {
82
  private:
83
    MeshDistributor();
84
	          
85
    virtual ~MeshDistributor() {}
86

87
  public:
88
    void initParallelization();
89

90
    void exitParallelization();
91

92
93
94
    /// Adds a DOFVector to the set of \ref interchangeVecs. Thus, this vector 
    /// will be automatically interchanged between ranks when mesh is 
    /// repartitioned.
95
96
97
98
99
    void addInterchangeVector(DOFVector<double> *vec)
    {
      interchangeVectors.push_back(vec);
    }

100
101
102
103
104
105
106
    /// Adds all DOFVectors of a SystemVector to \ref interchangeVecs.
    void addInterchangeVector(SystemVector *vec)
    {
      for (int i = 0; i < vec->getSize(); i++)
	interchangeVectors.push_back(vec->getDOFVector(i));
    }
    
107
    /** \brief
108
109
110
111
112
     * This function checks if the mesh has changed on at least on rank. In 
     * this case, the interior boundaries are adapted on all ranks such that 
     * they fit together on all ranks. Furthermore the function 
     * \ref updateLocalGlobalNumbering() is called to update the DOF numberings 
     * and mappings on all rank due to the new mesh structure.
113
     *
114
115
116
117
118
     * \param[in]  tryRepartition   If this parameter is true, repartitioning 
     *                              may be done. This depends on several other 
     *                              parameters. If the parameter is false, the 
     *                              mesh is only checked and adapted but never 
     *                              repartitioned.
119
     */
120
    void checkMeshChange(bool tryRepartition = true);
121

122
123
124
125
126
127
128
129
130
131
    /** \brief
     * Checks if is required to repartition the mesh. If this is the case, a new
     * partition will be created and the mesh will be redistributed between the
     * ranks.
     */
    void repartitionMesh();
    
    /// Calculates the imbalancing factor and prints it to screen.
    void printImbalanceFactor();

132
    /** \brief
133
134
135
136
     * Test, if the mesh consists of macro elements only. The mesh partitioning 
     * of the parallelization works for macro meshes only and would fail, if the 
     * mesh is already refined in some way. Therefore, this function will exit
     * the program if it finds a non macro element in the mesh.
137
138
     */
    void testForMacroMesh();
139

140
141
    /// Set for each element on the partitioning level the number of 
    /// leaf elements.
142
    void setInitialElementWeights();
143

144
    inline virtual string getName() 
145
146
147
    { 
      return name; 
    }
148

Thomas Witkowski's avatar
Thomas Witkowski committed
149
150
151
152
153
    inline Mesh* getMesh()
    {
      return mesh;
    }

154
155
    /// Returns an FE space from \ref feSpaces.
    inline const FiniteElemSpace* getFeSpace(unsigned int i = 0)
156
    {
157
158
159
160
161
      FUNCNAME("MeshDistributor::getFeSpace()");

      TEST_EXIT_DBG(i < feSpaces.size())("Should not happen!\n");

      return feSpaces[i];
162
    }
163
164
165
166
167
168
169

    /// Returns all FE spaces, thus \ref feSpaces.
    inline vector<const FiniteElemSpace*>& getFeSpaces()
    {
      return feSpaces;
    }

170
171
172
173
174
175
176
177
178
179
    /** \brief
     * Returns the number of DOFs in rank's domain for a given FE space.
     *
     * \param[in]  feSpace  If the FE space is defined, the function returns
     *                      the number of DOFs for this FE space. If this
     *                      parameter is not specified, the function assumes
     *                      that there is only one FE space and returns the
     *                      number of DOFs for this one.
     */
    inline int getNumberRankDofs(const FiniteElemSpace *feSpace = NULL) 
180
    {
181
182
      FUNCNAME("MeshDistributor::getNumberRankDofs()");

183
184
185
186
187
188
189
      if (feSpace == NULL) {
	TEST_EXIT_DBG(dofFeData.size() == 1)
	  ("More than one FE space defined!\n");

	return dofFeData.begin()->second.nRankDofs;
      }

190
191
      TEST_EXIT_DBG(dofFeData.count(feSpace))("Should not happen!\n");

192
      return dofFeData[feSpace].nRankDofs;
193
    }
194

195
196
197
198
199
200
201
202
203
204
205
206
207
    /// Returns the number of DOFs in rank's domain for a set of FE spaces.
    inline int getNumberRankDofs(vector<const FiniteElemSpace*>& feSpaces)
    {
      FUNCNAME("MeshDistributor::getNumberRankDofs()");

      int result = 0;
      for (unsigned int i = 0; i < feSpaces.size(); i++) {
	TEST_EXIT_DBG(dofFeData.count(feSpaces[i]))("Should not happen!\n");
	result += dofFeData[feSpaces[i]].nRankDofs;
      }

      return result;
    }
208

209
    /// Returns the first global DOF index of an FE space, owned by rank.
210
    inline int getStartDofs(const FiniteElemSpace *feSpace)
211
    {
212
213
214
215
      FUNCNAME("MeshDistributor::getStartDofs()");

      TEST_EXIT_DBG(dofFeData.count(feSpace))("Should not happen!\n");

216
      return dofFeData[feSpace].rStartDofs;
217
218
    }

219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
    /// Returns the first global DOF index for a set of FE spaces, owned by rank.
    inline int getStartDofs(vector<const FiniteElemSpace*>& feSpaces)
    {
      FUNCNAME("MeshDistributor::getStartDofs()");

      int result = 0;
      for (unsigned int i = 0; i < feSpaces.size(); i++) {
	TEST_EXIT_DBG(dofFeData.count(feSpaces[i]))("Should not happen!\n");

	result += dofFeData[feSpaces[i]].rStartDofs;
      }

      return result;
    }

234
235
236
237
238
239
240
241
242
243
    /** \brief
     * Returns the global number of DOFs for a given FE space.
     *
     * \param[in]  feSpace  If the FE space is defined, the function returns
     *                      the number of DOFs for this FE space. If this
     *                      parameter is not specified, the function assumes
     *                      that there is only one FE space and returns the
     *                      number of DOFs for this one.
     */
    inline int getNumberOverallDofs(const FiniteElemSpace *feSpace = NULL)
244
    {
245
246
      FUNCNAME("MeshDistributor::getNumberOverallDofs()");

247
248
249
250
251
252
253
      if (feSpace == NULL) {
	TEST_EXIT_DBG(dofFeData.size() == 1)
	  ("More than one FE space defined!\n");

	return dofFeData.begin()->second.nOverallDofs;
      }

254
255
      TEST_EXIT_DBG(dofFeData.count(feSpace))("Should not happen!\n");

256
      return dofFeData[feSpace].nOverallDofs;
257
    }
258

259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
    /// Returns the global number of DOFs for a set of FE spaces.
    inline int getNumberOverallDofs(vector<const FiniteElemSpace*>& feSpaces)
    {
      FUNCNAME("MeshDistributor::getNumberOverallDofs()");

      int result = 0;
      for (unsigned int i = 0; i < feSpaces.size(); i++) {
	TEST_EXIT_DBG(dofFeData.count(feSpaces[i]))("Should not happen!\n");

	result += dofFeData[feSpaces[i]].nOverallDofs;
      }

      return result;
    }

Thomas Witkowski's avatar
Thomas Witkowski committed
274
    inline DofMap& getMapDofToGlobal(const FiniteElemSpace *feSpace)
Thomas Witkowski's avatar
Thomas Witkowski committed
275
    {
276
      FUNCNAME("MeshDistributor::getMapDofToGlobal()");
277
278
279

      TEST_EXIT_DBG(dofFeData.count(feSpace))("Should not happen!\n");

280
      return dofFeData[feSpace].mapDofToGlobal;
Thomas Witkowski's avatar
Thomas Witkowski committed
281
282
    }

283
    /// Maps a local DOF to its global index.
284
285
    inline DegreeOfFreedom mapDofToGlobal(const FiniteElemSpace *feSpace,
					  DegreeOfFreedom dof)
286
    {
287
      FUNCNAME("MeshDistributor::mapDofToGlobal()");
288
289
290
291

      TEST_EXIT_DBG(dofFeData.count(feSpace))
	("No DOF data for FE space at addr %p!\n", feSpace);

292
      return dofFeData[feSpace].mapDofToGlobal[dof];
293
    }
294

295
296
297
298
    /// Returns for a global index the DOF index in rank's subdomain. As there
    /// is no direct data structure that stores this information, we have to
    /// search for it in \ref dofFeData.mapDofToGlobal. This is not very
    /// efficient and this function should thus be used for debugging only.
299
300
    DegreeOfFreedom mapGlobalToLocal(const FiniteElemSpace *feSpace,
				     DegreeOfFreedom dof);
301

302
    /// Maps a local DOF to its local index.
303
304
    inline DegreeOfFreedom mapLocalToDof(const FiniteElemSpace *feSpace,
					 DegreeOfFreedom dof)
305
    {
306
      FUNCNAME("MeshDistributor::mapLocalToDof()");
307
308
309
310

      TEST_EXIT_DBG(dofFeData.count(feSpace))
	("No DOF data for FE space at addr %p!\n", feSpace);

311
      return dofFeData[feSpace].mapLocalToDof[dof];
312
313
    }

314
315
    /// Returns the periodic mapping handler, \ref periodicMap.
    inline PeriodicMap& getPeriodicMap()
Thomas Witkowski's avatar
Thomas Witkowski committed
316
    {
317
      return periodicMap;
318
319
    }

320
    DofComm& getSendDofs()
321
322
323
324
    {
      return sendDofs;
    }

325
    DofComm& getRecvDofs()
326
327
328
329
    {
      return recvDofs;
    }

330
331
332
333
334
    DofComm& getPeriodicDofs()
    {
      return periodicDofs;
    }

335
336
    /// Return true, if the given DOF is owned by the rank. If false, the DOF
    /// is in rank's partition, but is owned by some other rank.
337
    inline bool getIsRankDof(const FiniteElemSpace *feSpace, DegreeOfFreedom dof)
338
    {
339
340
      if (dofFeData[feSpace].isRankDof.count(dof))
	return dofFeData[feSpace].isRankDof[dof];
341
342

      return false;
343
    }
344

345
    inline DofIndexToBool& getIsRankDof(const FiniteElemSpace *feSpace)
346
    {
347
      return dofFeData[feSpace].isRankDof;
348
349
    }

350
    inline long getLastMeshChangeIndex()
351
    {
352
      return lastMeshChangeIndex;
353
    }
354

355
    inline int getMpiRank()
356
    {
357
      return mpiRank;
358
    }
359

Thomas Witkowski's avatar
Thomas Witkowski committed
360
361
362
363
364
    inline int getMpiSize()
    {
      return mpiSize;
    }

365
366
367
    inline MPI::Intracomm& getMpiComm()
    {
      return mpiComm;
368
369
    }

370
371
372
373
374
    inline bool isInitialized()
    {
      return initialized;
    }

375
376
    /// Creates a set of all DOFs that are on interior boundaries of rank's
    /// domain. Thus, it creates the union of \ref sendDofs and \ref recvDofs.
377
378
    void createBoundaryDofs(const FiniteElemSpace *feSpace,
			    std::set<DegreeOfFreedom> &boundaryDofs);
379

380
    // Writes all data of this object to an output stream.
381
    void serialize(ostream &out);
382

383
    // Reads the object data from an input stream.
384
    void deserialize(istream &in);
385
386

    /** \brief
387
388
389
390
     * This function must be used if the values of a DOFVector must be 
     * synchronised over all ranks. That means, that each rank sends the 
     * values of the DOFs, which are owned by the rank and lie on an interior 
     * bounday, to all other ranks also having these DOFs.
391
     *
392
393
394
     * This function must be used, for example, after the lineary system is 
     * solved, or after the DOFVector is set by some user defined functions, 
     * e.g., initial solution functions.
395
     */    
396
397
398
399
400
    template<typename T>
    void synchVector(DOFVector<T> &vec) 
    {
      StdMpi<vector<T> > stdMpi(mpiComm);

401
402
      const FiniteElemSpace *fe = vec.getFeSpace();

403
      for (DofComm::Iterator it(sendDofs, fe); !it.end(); it.nextRank()) {
404
	vector<T> dofs;
405
	dofs.reserve(it.getDofs().size());
406
	
407
408
	for (; !it.endDofIter(); it.nextDof())
	  dofs.push_back(vec[it.getDofIndex()]);
409
	
410
	stdMpi.send(it.getRank(), dofs);
411
      }
412
413
414
415
	     
      for (DofComm::Iterator it(recvDofs); !it.end(); it.nextRank())
        stdMpi.recv(it.getRank());
	     
416
      stdMpi.startCommunication();
417
418
419
420
421

      for (DofComm::Iterator it(recvDofs, fe); !it.end(); it.nextRank())
	for (; !it.endDofIter(); it.nextDof())
	  vec[it.getDofIndex()] = 
	     stdMpi.getRecvData(it.getRank())[it.getDofCounter()];
422
423
    }
    
424
    /** \brief
425
426
427
     * Works in the same way as the function above defined for DOFVectors. Due
     * to performance, this function does not call \ref synchVector for each 
     * DOFVector, but instead sends all values of all DOFVectors all at once.
428
429
430
     */
    void synchVector(SystemVector &vec);

431
432
    void check3dValidMesh();

Thomas Witkowski's avatar
Thomas Witkowski committed
433
434
435
436
437
    void setBoundaryDofRequirement(Flag flag)
    {
      createBoundaryDofFlag = flag;
    }

438
    BoundaryDofInfo& getBoundaryDofInfo(const FiniteElemSpace *feSpace)
439
    {
440
      return boundaryDofInfo[feSpace];
441
442
    }

443
444
    void getAllBoundaryDofs(const FiniteElemSpace *feSpace,
			    DofContainer& dofs);
445

446
447
448
449
    const ElementObjectDatabase& getElementObjectDb() 
    {
      return elObjDb;
    }
450
451
452
453

    /// Adds a stationary problem to the global mesh distributor objects.
    static void addProblemStatGlobal(ProblemStatSeq *probStat);
    
454
  protected:
455
456
    void addProblemStat(ProblemStatSeq *probStat);

457
458
    /// Determines the interior boundaries, i.e. boundaries between ranks, and
    /// stores all information about them in \ref interiorBoundary.
459
    void createInteriorBoundaryInfo();
460

Thomas Witkowski's avatar
Thomas Witkowski committed
461
462
463
464
465
    void updateInteriorBoundaryInfo();

    void createMeshElementData();

    void createBoundaryData();
Thomas Witkowski's avatar
Thomas Witkowski committed
466

Thomas Witkowski's avatar
Thomas Witkowski committed
467
468
    void createBoundaryDofs();

469
470
    void createBoundaryDofs(const FiniteElemSpace *feSpace);

471
472
    /// Removes all macro elements from the mesh that are not part of ranks 
    /// partition.
473
474
    void removeMacroElements();

475
476
    void updateLocalGlobalNumbering();

477
478
    /// Updates the local and global DOF numbering after the mesh has been 
    /// changed.
479
    void updateLocalGlobalNumbering(const FiniteElemSpace *feSpace);
480

481
482
483
484
    /// Calls \ref createPeriodicMap(feSpace) for all FE spaces that are
    /// handled by the mesh distributor.
    void createPeriodicMap();

485
    /** \brief
486
487
488
489
     * Creates, for a specific FE space, to all DOFs in rank's partition that 
     * are on a periodic boundary the mapping from dof index to the other 
     * periodic dof indices. This information is stored in \ref periodicDofMap.
     */    
490
    void createPeriodicMap(const FiniteElemSpace *feSpace);
491

492
493
494
495
496
497
498
499
    /** \brief
     * This function is called only once during the initialization when the
     * whole macro mesh is available on all cores. It copies the pointers of all
     * macro elements to \ref allMacroElements and stores all neighbour 
     * information based on macro element indices (and not pointer based) in 
     * \ref macroElementNeighbours. These information are then used to 
     * reconstruct macro elements during mesh redistribution.
     */
500
501
    void createMacroElementInfo();

502
503
    void updateMacroElementInfo();

504
    /** \brief
505
506
507
508
509
510
     * Checks for all given interior boundaries if the elements fit together on
     * both sides of the boundaries. If this is not the case, the mesh is 
     * adapted. Because refinement of a certain element may forces the 
     * refinement of other elements, it is not guaranteed that all rank's meshes
     * fit together after this function terminates. Hence, it must be called 
     * until a stable mesh refinement is reached.
511
     *
512
513
     * \param[in] allBound   Defines a map from rank to interior boundaries 
     *                       which should be checked.
514
     *
515
516
517
     * \return    If the mesh has  been changed by this function, it returns 
     *            true. Otherwise, it returns false, i.e., the given interior 
     *            boundaries fit together on both sides.
518
519
     */
    bool checkAndAdaptBoundary(RankToBoundMap &allBound);
520
  
521
522
    /// Sets \ref isRankDof to all matrices and rhs vectors in a given 
    /// stationary problem.
523
    void setRankDofs(ProblemStatSeq *probStat);
524

525
526
    /// Sets \ref isRankDof to all matrices and rhs vectors in all 
    /// stationary problems.
527
528
    void setRankDofs();

529
530
531
532
    /// Removes all periodic boundary condition information from all matrices and
    /// vectors of all stationary problems and from the mesh itself.
    void removePeriodicBoundaryConditions();

533
534
535
536
    /// Removes all periodic boundary condition information from all matrices and
    /// vector of a given stationary problem.
    void removePeriodicBoundaryConditions(ProblemStatSeq *probStat);

Thomas Witkowski's avatar
Thomas Witkowski committed
537
    // Removes all periodic boundaries from a given boundary map.
538
    void removePeriodicBoundaryConditions(BoundaryIndexMap& boundaryMap);
Thomas Witkowski's avatar
Thomas Witkowski committed
539

540
    /// Writes a vector of dof pointers to an output stream.
541
    void serialize(ostream &out, DofContainer &data);
542

543
544
545
546
    /// Writes a \ref RankToDofContainer to an output stream.
    void serialize(ostream &out, 
		   map<int, map<const FiniteElemSpace*, DofContainer> > &data);

547
    /// Reads a vector of dof pointers from an input stream.
548
549
    void deserialize(istream &in, DofContainer &data,
		     map<int, const DegreeOfFreedom*> &dofMap);
550
551

    /// Reads a \ref RankToDofContainer from an input stream.
552
553
554
    void deserialize(istream &in, 
		     map<int, map<const FiniteElemSpace*, DofContainer> > &data,
		     map<const FiniteElemSpace*, map<int, const DegreeOfFreedom*> > &dofMap);
555
556
557

    /// Writes a mapping from dof pointers to some values to an output stream.
    template<typename T>
558
    void serialize(ostream &out, map<const DegreeOfFreedom*, T> &data)
559
    {
560
561
      FUNCNAME("ParallelDomainBase::serialize()");

562
      int mapSize = data.size();
563
      SerUtil::serialize(out, mapSize);
564
      for (typename map<const DegreeOfFreedom*, T>::iterator it = data.begin();
565
566
567
	   it != data.end(); ++it) {
	int v1 = (*(it->first));
	T v2 = it->second;
568
569
	SerUtil::serialize(out, v1);
	SerUtil::serialize(out, v2);
570
571
572
573
574
      }
    }

    /// Reads a mapping from dof pointer to some values from an input stream.
    template<typename T>
575
576
    void deserialize(istream &in, map<const DegreeOfFreedom*, T> &data,
		     map<int, const DegreeOfFreedom*> &dofMap)
577
    {
578
579
      FUNCNAME("ParallelDomainBase::deserialize()");

580
      int mapSize = 0;
581
      SerUtil::deserialize(in, mapSize);
582
583
584
      for (int i = 0; i < mapSize; i++) {
	int v1 = 0;
	T v2;
585
586
	SerUtil::deserialize(in, v1);
	SerUtil::deserialize(in, v2);
587
588
589

	TEST_EXIT_DBG(dofMap.count(v1) != 0)("Cannot find DOF %d in map!\n", v1);

590
591
592
	data[dofMap[v1]] = v2;
      }
    }
593

594
  protected:
595
596
    /// List of all stationary problems that are managed by this mesh 
    /// distributor.
597
    vector<ProblemStatSeq*> problemStat;
Thomas Witkowski's avatar
Thomas Witkowski committed
598

599
600
601
    /// If true, the mesh distributor is already initialized;
    bool initialized;

602
603
604
605
606
607
    /// The rank of the current process.
    int mpiRank;

    /// Overall number of processes.
    int mpiSize;

608
609
    /// MPI communicator collected all processes, which should be used for
    /// calculation. The Debug procces is not included in this communicator.
610
611
612
    MPI::Intracomm mpiComm;

    /// Name of the problem (as used in the init files)
613
    string name;
614

615
616
    /// Finite element spaces of the problem.
    vector<const FiniteElemSpace*> feSpaces;
617

618
619
620
    /// Mesh of the problem.
    Mesh *mesh;

621
622
623
    /// A refinement manager that should be used on the mesh. It is used to 
    /// refine elements at interior boundaries in order to fit together with 
    /// elements on the other side of the interior boundary.    
624
625
    RefinementManager *refineManager;

626
627
628
    /// Info level.
    int info;

629
630
    /// Pointer to a mesh partitioner that is used to partition the mesh to 
    /// the ranks.
631
    MeshPartitioner *partitioner;
632

633
634
    /// Weights for the elements, i.e., the number of leaf elements within 
    /// this element.
635
    map<int, double> elemWeights;
636

637
638
    /// Stores to every macro element index the number of the rank that owns this
    /// macro element.
639
    map<int, int> partitionMap;
640

641
    map<const FiniteElemSpace*, DofData> dofFeData;
642

643
    /// Database to store and query all sub-objects of all elements of the 
644
    /// macro mesh.
645
    ElementObjectDatabase elObjDb;
Thomas Witkowski's avatar
Thomas Witkowski committed
646

647
    /// Maps to each macro element index a pointer to the corresponding element.
648
    map<int, Element*> macroElIndexMap;
Thomas Witkowski's avatar
Thomas Witkowski committed
649
    
650
    /// Maps to each macro element index the type of this element.
651
    map<int, int> macroElIndexTypeMap;
Thomas Witkowski's avatar
Thomas Witkowski committed
652

653
654
655
656
    /// Defines the interior boundaries of the domain that result from 
    /// partitioning the whole mesh. Contains only the boundaries, which are 
    /// owned by the rank, i.e., the object gives for every neighbour rank i 
    /// the boundaries this rank owns and shares with rank i.
657
    InteriorBoundary rankIntBoundary;
Thomas Witkowski's avatar
Thomas Witkowski committed
658
    
659
660
661
662
    /// Defines the interior boundaries of the domain that result from 
    /// partitioning the whole mesh. Contains only the boundaries, which are 
    /// not owned by the rank, i.e., the object gives for every neighbour rank 
    /// i the boundaries that are owned by rank i and are shared with this rank.
Thomas Witkowski's avatar
Thomas Witkowski committed
663
    InteriorBoundary otherIntBoundary;
Thomas Witkowski's avatar
Thomas Witkowski committed
664

665
666
    /// Defines the periodic boundaries with other ranks. Periodic boundaries
    /// have no owner, as it is the case of interior boundaries.
667
668
    InteriorBoundary periodicBoundary;

669
670
    /// This map contains for each rank the list of DOFs the current rank must 
    /// end to exchange solution DOFs at the interior boundaries.
671
    DofComm sendDofs;
672

673
674
675
    /// This map contains on each rank the list of DOFs from which the current 
    /// rank will receive DOF values (i.e., this are all DOFs at an interior 
    /// boundary). The DOF indices are given in rank's local numbering.
676
    DofComm recvDofs;
677

678
679
680
681
    /// This map contains on each rank a list of DOFs along the interior bound-
    /// aries to communicate with other ranks. The DOF indices are given in rank's
    /// local numbering. Periodic boundaries within one subdomain are not 
    /// considered here. 
682
683
    DofComm periodicDofs;

684
    PeriodicMap periodicMap;
685

686
687
688
689
    /// This set of values must be interchanged between ranks when the mesh is 
    /// repartitioned.
    vector<DOFVector<double>*> interchangeVectors;
		        
690
691
692
693
    /// If the problem definition has been read from a serialization file, this 
    /// variable is true, otherwise it is false. This variable is used to stop the
    /// initialization function, if the problem definition has already been read
    /// from a serialization file.
694
    bool deserialized;
695

696
697
698
    /// Denotes whether there exists a filewriter for this object.
    bool writeSerializationFile;

699
700
701
    /// If true, it is possible to repartition the mesh during computations.
    bool repartitioningAllowed;

702
703
    /// Stores the number of mesh changes that must lie in between to 
    /// repartitionings.
704
705
    int repartitionIthChange;

706
707
    /// Counts the number of mesh changes after the last mesh repartitioning 
    /// was done.
708
    int nMeshChangesAfterLastRepartitioning;
709

710
711
712
    /// Countes the number of mesh repartitions that were done. Till now, this 
    /// variable is used only for debug outputs.
    int repartitioningCounter;
713

714
    /// Directory name where all debug output files should be written to.
715
    string debugOutputDir;
716

717
718
    /// Stores the mesh change index. This is used to recognize changes in the
    /// mesh structure (e.g. through refinement or coarsening managers).
719
    long lastMeshChangeIndex;
720

721
722
723
724
    /// Stores for all macro elements of the original macro mesh the
    /// neighbourhood information based on element indices. Thus, each macro
    /// element index is mapped to a vector containing all indices of 
    /// neighbouring macro elements.
725
    map<int, vector<int> > macroElementNeighbours;
726

727
728
    /// Store all macro elements of the overall mesh, i.e., before the
    /// mesh is redistributed for the first time.
729
    vector<MacroElement*> allMacroElements;
730

Thomas Witkowski's avatar
Thomas Witkowski committed
731
732
    Flag createBoundaryDofFlag;

733
    map<const FiniteElemSpace*, BoundaryDofInfo> boundaryDofInfo;
734

Thomas Witkowski's avatar
Thomas Witkowski committed
735
  public:
736
737
    bool sebastianMode;

738
739
740
    /// The boundary DOFs are sorted by subobject entities, i.e., first all
    /// face DOFs, edge DOFs and to the last vertex DOFs will be set to
    /// communication structure vectors, \ref sendDofs and \ref recvDofs.
Thomas Witkowski's avatar
Thomas Witkowski committed
741
742
    static const Flag BOUNDARY_SUBOBJ_SORTED;

743
744
745
746
747
748
749
750
751
    /// When boundary DOFs are created, \ref boundaryDofInfo is filled for
    /// all DOFs that this rank will send to other ranks (thus, rank 
    /// owned DOFs.
    static const Flag BOUNDARY_FILL_INFO_SEND_DOFS;

    /// When boundary DOFs are created, \ref boundaryDofInfo is filled for
    /// all DOFs that this rank will receive from other ranks (thus, DOFs
    /// that are owned by another rank).
    static const Flag BOUNDARY_FILL_INFO_RECV_DOFS;
Thomas Witkowski's avatar
Thomas Witkowski committed
752

753
754
    static MeshDistributor *globalMeshDistributor;

755
    friend class ParallelDebug;
756
757
758
  };
}

759
#endif // AMDIS_MESHDISTRIBUTOR_H