MeshDistributor.h 21.6 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/ParallelTypes.h"
29
#include "parallel/MeshPartitioner.h"
Thomas Witkowski's avatar
Thomas Witkowski committed
30
#include "parallel/InteriorBoundary.h"
31
#include "parallel/StdMpi.h"
32
#include "AMDiS_fwd.h"
Thomas Witkowski's avatar
Thomas Witkowski committed
33
#include "Global.h"
34
35
#include "ProblemTimeInterface.h"
#include "ProblemIterationInterface.h"
36
#include "FiniteElemSpace.h"
37
#include "Serializer.h"
Thomas Witkowski's avatar
Thomas Witkowski committed
38
#include "BoundaryManager.h"
39
#include "ElementObjectData.h"
40
#include "SystemVector.h"
41

42
namespace AMDiS {
43
44

  using namespace std;
Thomas Witkowski's avatar
Thomas Witkowski committed
45
46
47
48


  struct BoundaryDofInfo
  {
49
    map<GeoIndex, DofContainerSet> geoDofs;
Thomas Witkowski's avatar
Thomas Witkowski committed
50
  };
51
  
Thomas Witkowski's avatar
Thomas Witkowski committed
52

53
  class MeshDistributor
54
  {
55
  private:
56
    MeshDistributor();
57
	          
58
    virtual ~MeshDistributor() {}
59

60
  public:
61
    void initParallelization();
62

63
    void exitParallelization();
64

65
66
67
    /// Adds a DOFVector to the set of \ref interchangeVecs. Thus, this vector 
    /// will be automatically interchanged between ranks when mesh is 
    /// repartitioned.
68
69
70
71
72
    void addInterchangeVector(DOFVector<double> *vec)
    {
      interchangeVectors.push_back(vec);
    }

73
74
75
76
77
78
79
    /// 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));
    }
    
80
    /** \brief
81
82
83
84
85
     * 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.
86
     *
87
88
89
90
91
     * \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.
92
     */
93
    void checkMeshChange(bool tryRepartition = true);
94

95
    /** \brief
96
97
98
99
     * 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.
100
101
     */
    void testForMacroMesh();
102

103
104
    /// Set for each element on the partitioning level the number of 
    /// leaf elements.
105
    void setInitialElementWeights();
106

107
    inline virtual string getName() 
108
109
110
    { 
      return name; 
    }
111

Thomas Witkowski's avatar
Thomas Witkowski committed
112
113
114
115
116
    inline Mesh* getMesh()
    {
      return mesh;
    }

117
118
119
120
121
    /// Returns \ref feSpace.
    inline const FiniteElemSpace* getFeSpace()
    {
      return feSpace;
    }
122
123
124
    
    /// Returns \ref nRankDOFs, the number of DOFs in the rank mesh.
    inline int getNumberRankDofs() 
125
    {
126
      return nRankDofs;
127
    }
128

129
    /// Returns \ref nOverallDofs, the global number of DOFs.
130
    inline int getNumberOverallDofs()
131
    {
132
      return nOverallDofs;
133
    }
134

Thomas Witkowski's avatar
Thomas Witkowski committed
135
136
137
138
139
    inline DofMapping& getMapLocalGlobalDofs()
    {
      return mapLocalGlobalDofs;
    }

140
    /// Maps a local DOF to its global index.
141
    inline DegreeOfFreedom mapLocalToGlobal(DegreeOfFreedom dof)
142
    {
143
      return mapLocalGlobalDofs[dof];
144
    }
145

146
147
    DegreeOfFreedom mapGlobalToLocal(DegreeOfFreedom dof);

148
    /// Maps a local DOF to its local index.
149
150
151
152
153
    inline DegreeOfFreedom mapLocalToDofIndex(DegreeOfFreedom dof)
    {
      return mapLocalDofIndex[dof];
    }

Thomas Witkowski's avatar
Thomas Witkowski committed
154
155
156
157
158
159
    /// Returns the periodic mapping for all boundary DOFs in rank.
    inline PeriodicDofMap& getPeriodicMapping()
    {
      return periodicDof;
    }

160
161
    /// Returns for a global dof index its periodic mapping for a given 
    /// boundary type.
162
    inline int getPeriodicMapping(int globalDofIndex, BoundaryType type)
163
    {
Thomas Witkowski's avatar
Thomas Witkowski committed
164
165
      FUNCNAME("MeshDistributor::getPeriodicMapping()");

166
      TEST_EXIT_DBG(periodicDof[type].count(globalDofIndex) == 1)
Thomas Witkowski's avatar
Thomas Witkowski committed
167
168
	("There is no periodic association for global DOF %d for boundary type %d!\n",
	 globalDofIndex, type);
169
170
171
172

      return periodicDof[type][globalDofIndex];
    }

173
    /// For a given global DOF index, this function returns the set of periodic
174
175
    /// associations, i.e., the boundary types the DOF is associated to, for 
    /// this DOF.
176
    inline std::set<BoundaryType>& getPerDofAssociations(int globalDofIndex)
177
    {      
178
179
180
      TEST_EXIT_DBG(periodicDofAssociations.count(globalDofIndex)) 
 	("Should not happen!\n"); 

181
      return periodicDofAssociations[globalDofIndex];
182
    }
183

184
    /// Returns true, if the DOF (global index) is a periodic DOF.
185
    inline bool isPeriodicDof(int globalDofIndex)
186
    {
187
188
      return (periodicDofAssociations.count(globalDofIndex) > 0 &&
	       periodicDofAssociations[globalDofIndex].size() > 0);
189
190
    }

191
192
193
    /// Returns true, if the DOF (global index) is a periodic DOF for the given
    /// boundary type.
    inline bool isPeriodicDof(int globalDofIndex, BoundaryType type)
194
195
    {
      return (periodicDof[type].count(globalDofIndex) > 0);
196
197
    }

198
199
    /// 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.
200
201
    inline bool getIsRankDof(DegreeOfFreedom dof)
    {
202
203
204
205
      if (isRankDof.count(dof))
	return isRankDof[dof];

      return false;
206
    }
207

208
209
210
211
212
    inline DofIndexToBool& getIsRankDof()
    {
      return isRankDof;
    }

213
    inline long getLastMeshChangeIndex()
214
    {
215
      return lastMeshChangeIndex;
216
    }
217

218
219
220
221
    inline int getRstart()
    {
      return rstart;
    }
222

223
    inline int getMpiRank()
224
    {
225
      return mpiRank;
226
    }
227

Thomas Witkowski's avatar
Thomas Witkowski committed
228
229
230
231
232
    inline int getMpiSize()
    {
      return mpiSize;
    }

233
234
235
    inline MPI::Intracomm& getMpiComm()
    {
      return mpiComm;
236
237
    }

238
    inline RankToDofContainer& getSendDofs()
239
    {
240
      return sendDofs;
241
242
    }

243
    inline RankToDofContainer& getRecvDofs()
244
    {
245
      return recvDofs;
246
    }
247

248
249
250
251
    /// 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.
    void createBoundaryDofs(std::set<DegreeOfFreedom> &boundaryDofs);

252
    // Writes all data of this object to an output stream.
253
    void serialize(ostream &out);
254

255
    // Reads the object data from an input stream.
256
    void deserialize(istream &in);
257
258

    /** \brief
259
260
261
262
     * 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.
263
     *
264
265
266
     * 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.
267
     */    
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
    template<typename T>
    void synchVector(DOFVector<T> &vec) 
    {
      StdMpi<vector<T> > stdMpi(mpiComm);

      for (RankToDofContainer::iterator sendIt = sendDofs.begin();
	   sendIt != sendDofs.end(); ++sendIt) {
	vector<T> dofs;
	int nSendDofs = sendIt->second.size();
	dofs.reserve(nSendDofs);
	
	for (int i = 0; i < nSendDofs; i++)
	  dofs.push_back(vec[*((sendIt->second)[i])]);
	
	stdMpi.send(sendIt->first, dofs);
      }
      
      for (RankToDofContainer::iterator recvIt = recvDofs.begin();
	   recvIt != recvDofs.end(); ++recvIt)
	stdMpi.recv(recvIt->first, recvIt->second.size());
      
      stdMpi.startCommunication();
      
      for (RankToDofContainer::iterator recvIt = recvDofs.begin();
	   recvIt != recvDofs.end(); ++recvIt)
	for (unsigned int i = 0; i < recvIt->second.size(); i++)
	  vec[*(recvIt->second)[i]] = stdMpi.getRecvData(recvIt->first)[i];      
    }
    
297
    /** \brief
298
299
300
     * 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.
301
302
303
     */
    void synchVector(SystemVector &vec);

304
305
    void check3dValidMesh();

Thomas Witkowski's avatar
Thomas Witkowski committed
306
307
308
309
310
    void setBoundaryDofRequirement(Flag flag)
    {
      createBoundaryDofFlag = flag;
    }

311
312
313
314
315
    BoundaryDofInfo& getBoundaryDofInfo()
    {
      return boundaryDofInfo;
    }

316
317
    void getAllBoundaryDofs(DofContainer& dofs);

318
319
320
321
322
323

  public:
    /// Adds a stationary problem to the global mesh distributor objects.
    static void addProblemStatGlobal(ProblemStatSeq *probStat);

    
324
  protected:
325
326
    void addProblemStat(ProblemStatSeq *probStat);

327
328
    /// Determines the interior boundaries, i.e. boundaries between ranks, and
    /// stores all information about them in \ref interiorBoundary.
329
    void createInteriorBoundaryInfo();
330

Thomas Witkowski's avatar
Thomas Witkowski committed
331
332
333
334
335
    void updateInteriorBoundaryInfo();

    void createMeshElementData();

    void createBoundaryData();
Thomas Witkowski's avatar
Thomas Witkowski committed
336

Thomas Witkowski's avatar
Thomas Witkowski committed
337
338
    void createBoundaryDofs();

339
340
    /// Removes all macro elements from the mesh that are not part of ranks 
    /// partition.
341
342
    void removeMacroElements();

343
344
    /// Updates the local and global DOF numbering after the mesh has been 
    /// changed.
345
    void updateLocalGlobalNumbering();
346

347
    /** \brief
348
349
350
     * Creates 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 periodicDof.
351
     */
352
353
    void createPeriodicMap();

354
355
356
357
358
359
360
361
    /** \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.
     */
362
363
    void createMacroElementInfo();

364
365
    void updateMacroElementInfo();

366
    /** \brief
367
368
369
370
371
372
     * 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.
373
     *
374
375
     * \param[in] allBound   Defines a map from rank to interior boundaries 
     *                       which should be checked.
376
     *
377
378
379
     * \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.
380
381
     */
    bool checkAndAdaptBoundary(RankToBoundMap &allBound);
382
383
384
385
386
387
388
389
  
    /** \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();

390
391
    /// Sets \ref isRankDof to all matrices and rhs vectors in a given 
    /// stationary problem.
392
    void setRankDofs(ProblemStatSeq *probStat);
393

394
395
    /// Sets \ref isRankDof to all matrices and rhs vectors in all 
    /// stationary problems.
396
397
    void setRankDofs();

398
399
400
401
    /// Removes all periodic boundary condition information from all matrices and
    /// vectors of all stationary problems and from the mesh itself.
    void removePeriodicBoundaryConditions();

Thomas Witkowski's avatar
Thomas Witkowski committed
402
    // Removes all periodic boundaries from a given boundary map.
403
    void removePeriodicBoundaryConditions(BoundaryIndexMap& boundaryMap);
Thomas Witkowski's avatar
Thomas Witkowski committed
404

405
    /// Writes a vector of dof pointers to an output stream.
406
    void serialize(ostream &out, DofContainer &data);
407
408

    /// Reads a vector of dof pointers from an input stream.
409
410
    void deserialize(istream &in, DofContainer &data,
		     map<int, const DegreeOfFreedom*> &dofMap);
411
412

    /// Writes a \ref RankToDofContainer to an output stream.
413
    void serialize(ostream &out, RankToDofContainer &data);
414
415

    /// Reads a \ref RankToDofContainer from an input stream.
416
417
    void deserialize(istream &in, RankToDofContainer &data,
		     map<int, const DegreeOfFreedom*> &dofMap);
418

419
    /// Writes a periodic dof mapping to an output stream.
420
    void serialize(ostream &out, PeriodicDofMap &data);
421

422
    void serialize(ostream &out, map<int, std::set<int> >& data);
423

424
    /// Reads a periodic dof mapping from an input stream.
425
    void deserialize(istream &in, PeriodicDofMap &data);
426

427
    void deserialize(istream &in, map<int, std::set<int> >& data);
428

429
430
    /// Writes a mapping from dof pointers to some values to an output stream.
    template<typename T>
431
    void serialize(ostream &out, map<const DegreeOfFreedom*, T> &data)
432
    {
433
434
      FUNCNAME("ParallelDomainBase::serialize()");

435
      int mapSize = data.size();
436
      SerUtil::serialize(out, mapSize);
437
      for (typename map<const DegreeOfFreedom*, T>::iterator it = data.begin();
438
439
440
	   it != data.end(); ++it) {
	int v1 = (*(it->first));
	T v2 = it->second;
441
442
	SerUtil::serialize(out, v1);
	SerUtil::serialize(out, v2);
443
444
445
446
447
      }
    }

    /// Reads a mapping from dof pointer to some values from an input stream.
    template<typename T>
448
449
    void deserialize(istream &in, map<const DegreeOfFreedom*, T> &data,
		     map<int, const DegreeOfFreedom*> &dofMap)
450
    {
451
452
      FUNCNAME("ParallelDomainBase::deserialize()");

453
      int mapSize = 0;
454
      SerUtil::deserialize(in, mapSize);
455
456
457
      for (int i = 0; i < mapSize; i++) {
	int v1 = 0;
	T v2;
458
459
	SerUtil::deserialize(in, v1);
	SerUtil::deserialize(in, v2);
460
461
462

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

463
464
465
	data[dofMap[v1]] = v2;
      }
    }
466

467
  protected:
468
469
    /// List of all stationary problems that are managed by this mesh 
    /// distributor.
470
    vector<ProblemStatSeq*> problemStat;
Thomas Witkowski's avatar
Thomas Witkowski committed
471

472
473
474
    /// If true, the mesh distributor is already initialized;
    bool initialized;

475
476
477
478
479
480
    /// The rank of the current process.
    int mpiRank;

    /// Overall number of processes.
    int mpiSize;

481
482
    /// MPI communicator collected all processes, which should be used for
    /// calculation. The Debug procces is not included in this communicator.
483
484
485
    MPI::Intracomm mpiComm;

    /// Name of the problem (as used in the init files)
486
    string name;
487

488
489
490
    /// Finite element space of the problem.
    FiniteElemSpace *feSpace;

491
492
493
    /// Mesh of the problem.
    Mesh *mesh;

494
    /** \brief
495
496
497
     * 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.
498
499
500
     */    
    RefinementManager *refineManager;

501
502
503
    /// Info level.
    int info;

504
505
    /// Pointer to a mesh partitioner that is used to partition the mesh to 
    /// the ranks.
506
    MeshPartitioner *partitioner;
507

508
509
    /// Weights for the elements, i.e., the number of leaf elements within 
    /// this element.
510
    map<int, double> elemWeights;
511
512

    /** \brief
513
514
     * Stores to every macro element index the number of the rank that owns this
     * macro element.
515
     */
516
    map<int, int> partitionMap;
517

518
    /// Number of DOFs in the rank mesh.
519
    int nRankDofs;
Thomas Witkowski's avatar
Thomas Witkowski committed
520

521
    /// Number of DOFs in the whole domain.
522
523
    int nOverallDofs;

524
525
    /// Data structure to store all sub-objects of all elements of the 
    /// macro mesh.
Thomas Witkowski's avatar
Thomas Witkowski committed
526
527
    ElementObjects elObjects;

528
    /// Maps to each macro element index a pointer to the corresponding element.
529
    map<int, Element*> macroElIndexMap;
Thomas Witkowski's avatar
Thomas Witkowski committed
530
    
531
    /// Maps to each macro element index the type of this element.
532
    map<int, int> macroElIndexTypeMap;
Thomas Witkowski's avatar
Thomas Witkowski committed
533

Thomas Witkowski's avatar
Thomas Witkowski committed
534
    /** \brief 
535
536
537
538
     * 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.
Thomas Witkowski's avatar
Thomas Witkowski committed
539
540
541
542
     */
    InteriorBoundary myIntBoundary;
    
    /** \brief
543
544
545
546
     * 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
547
     */
Thomas Witkowski's avatar
Thomas Witkowski committed
548
    InteriorBoundary otherIntBoundary;
Thomas Witkowski's avatar
Thomas Witkowski committed
549

550
    /** \brief
551
552
     * Defines the periodic boundaries with other ranks. Periodic boundaries
     * have no owner, as it is the case of interior boundaries.
553
554
555
     */
    InteriorBoundary periodicBoundary;

556
    /** \brief
557
558
     * This map contains for each rank the list of DOFs the current rank must 
     * send to exchange solution DOFs at the interior boundaries.
559
     */
Thomas Witkowski's avatar
Thomas Witkowski committed
560
    RankToDofContainer sendDofs;
561
562

    /** \brief
563
564
565
     * 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.
566
     */
Thomas Witkowski's avatar
Thomas Witkowski committed
567
    RankToDofContainer recvDofs;
568
569

    /// Maps local to global dof indices.
570
    DofMapping mapLocalGlobalDofs;
571

Thomas Witkowski's avatar
Thomas Witkowski committed
572
    /// Maps local dof indices to real dof indices.
573
    DofMapping mapLocalDofIndex;  
574
575

    /** \brief
576
577
578
     * 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.
579
     */
580
581
    DofIndexToBool isRankDof;

582
    /** \brief
583
584
585
586
     * If periodic boundaries are used, this map stores, for each periodic 
     * boundary type, for all DOFs in rank's partition (that are on periodic 
     * boundaries), the corresponding mapped periodic DOFs. The mapping is 
     * defined by using global DOF indices.
587
     */
588
    PeriodicDofMap periodicDof;
589
590
    
    /** \brief
591
592
593
594
595
     * If periodic boundaries are used, this map stores to each periodic DOF in 
     * rank's partition the set of periodic boundaries the DOF is associated to.
     * In 2D, most DOFs are only on one periodic boundary. Only, e.g., in a box 
     * with all boundaries being periodic, the four corners are associated by 
     * two different boundaries.
596
     */
597
    map<int, std::set<BoundaryType> > periodicDofAssociations;
598

599
600
601
602
603
    
    /// This set of values must be interchanged between ranks when the mesh is 
    /// repartitioned.
    vector<DOFVector<double>*> interchangeVectors;
		        
604
605
    /// Is the index of the first row of the linear system, which is owned by 
    /// the rank.
Thomas Witkowski's avatar
n  
Thomas Witkowski committed
606
    int rstart;
607

608
609
610
    /** \brief
     * 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
611
612
     * initialization function, if the problem definition has already been read
     * from a serialization file.
613
614
     */
    bool deserialized;
615

616
617
618
    /// Denotes whether there exists a filewriter for this object.
    bool writeSerializationFile;

619
620
621
    /// If true, it is possible to repartition the mesh during computations.
    bool repartitioningAllowed;

622
623
    /// Stores the number of mesh changes that must lie in between to 
    /// repartitionings.
624
625
    int repartitionIthChange;

626
627
    /// Counts the number of mesh changes after the last mesh repartitioning 
    /// was done.
628
    int nMeshChangesAfterLastRepartitioning;
629

630
631
632
    /// Countes the number of mesh repartitions that were done. Till now, this 
    /// variable is used only for debug outputs.
    int repartitioningCounter;
633

634
    /// Directory name where all debug output files should be written to.
635
    string debugOutputDir;
636

637
    /** \brief
638
639
     * Stores the mesh change index. This is used to recognize changes in the
     * mesh structure (e.g. through refinement or coarsening managers).
640
641
     */
    long lastMeshChangeIndex;
642

643
644
645
646
    /// 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.
647
    map<int, vector<int> > macroElementNeighbours;
648

649
650
    /// Store all macro elements of the overall mesh, i.e., before the
    /// mesh is redistributed for the first time.
651
    vector<MacroElement*> allMacroElements;
652

Thomas Witkowski's avatar
Thomas Witkowski committed
653
654
655
    Flag createBoundaryDofFlag;

    BoundaryDofInfo boundaryDofInfo;
656

Thomas Witkowski's avatar
Thomas Witkowski committed
657
  public:
658
659
660
    /// 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
661
662
    static const Flag BOUNDARY_SUBOBJ_SORTED;

663
664
665
666
667
668
669
670
671
    /// 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
672

673
674
    static MeshDistributor *globalMeshDistributor;

675
    friend class ParallelDebug;
676
677
678
  };
}

679
#endif // AMDIS_MESHDISTRIBUTOR_H