1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
/*=========================================================================
Program: Visualization Toolkit
Module: vtkStructuredGridPartitioner.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkStructuredGridPartitioner.h"
#include "vtkObjectFactory.h"
#include "vtkIndent.h"
#include "vtkExtentRCBPartitioner.h"
#include "vtkStructuredGrid.h"
#include "vtkStructuredData.h"
#include "vtkStructuredExtent.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkMultiBlockDataSet.h"
#include "vtkPoints.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include <cassert>
vtkStandardNewMacro( vtkStructuredGridPartitioner );
//------------------------------------------------------------------------------
vtkStructuredGridPartitioner::vtkStructuredGridPartitioner()
{
this->NumberOfPartitions = 2;
this->NumberOfGhostLayers = 0;
this->DuplicateNodes = 1;
this->SetNumberOfInputPorts(1);
this->SetNumberOfOutputPorts(1);
}
//------------------------------------------------------------------------------
vtkStructuredGridPartitioner::~vtkStructuredGridPartitioner()
{
}
//------------------------------------------------------------------------------
void vtkStructuredGridPartitioner::PrintSelf(
std::ostream &oss, vtkIndent indent )
{
this->Superclass::PrintSelf( oss, indent );
oss << "NumberOfPartitions: " << this->NumberOfPartitions << std::endl;
oss << "NumberOfGhostLayers: " << this->NumberOfGhostLayers << std::endl;
oss << "DuplicateNodes: " << this->DuplicateNodes << std::endl;
}
//------------------------------------------------------------------------------
int vtkStructuredGridPartitioner::FillInputPortInformation(
int vtkNotUsed(port), vtkInformation *info )
{
info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(),"vtkStructuredGrid");
return 1;
}
//------------------------------------------------------------------------------
int vtkStructuredGridPartitioner::FillOutputPortInformation(
int vtkNotUsed(port), vtkInformation *info )
{
info->Set(vtkDataObject::DATA_TYPE_NAME(),"vtkMultiBlockDataSet");
return 1;
}
//------------------------------------------------------------------------------
vtkPoints* vtkStructuredGridPartitioner::ExtractSubGridPoints(
vtkStructuredGrid *wholeGrid, int subext[6] )
{
assert("pre: whole grid is NULL" && (wholeGrid != NULL) );
int numNodes = vtkStructuredData::GetNumberOfPoints( subext );
vtkPoints *pnts = vtkPoints::New();
pnts->SetDataTypeToDouble();
pnts->SetNumberOfPoints( numNodes );
int ijk[3];
double p[3];
int dataDescription = vtkStructuredData::GetDataDescriptionFromExtent(subext);
for( int i=subext[0]; i <= subext[1]; ++i )
{
for( int j=subext[2]; j <= subext[3]; ++j )
{
for( int k=subext[4]; k <= subext[5]; ++k )
{
wholeGrid->GetPoint(i,j,k,p,false);
ijk[0]=i; ijk[1]=j; ijk[2]=k;
vtkIdType pntIdx =
vtkStructuredData::ComputePointIdForExtent(
subext,ijk,dataDescription);
assert("pre: point index is out-of-bounds!" &&
(pntIdx >= 0) && (pntIdx < numNodes) );
pnts->SetPoint(pntIdx,p);
} // END for all k
} // END for all j
} // END for all i
return( pnts );
}
//------------------------------------------------------------------------------
int vtkStructuredGridPartitioner::RequestData(
vtkInformation* vtkNotUsed(request),
vtkInformationVector** inputVector,vtkInformationVector* outputVector )
{
// STEP 0: Get input object
vtkInformation *input = inputVector[0]->GetInformationObject( 0 );
assert("pre: input information object is NULL" && (input != NULL) );
vtkStructuredGrid *grd =
vtkStructuredGrid::SafeDownCast(input->Get(vtkDataObject::DATA_OBJECT()));
// STEP 1: Get output object
vtkInformation *output = outputVector->GetInformationObject( 0 );
assert("pre: output information object is NULL" && (output != NULL) );
vtkMultiBlockDataSet *multiblock =
vtkMultiBlockDataSet::SafeDownCast(
output->Get( vtkDataObject::DATA_OBJECT() ) );
assert("pre: multi-block grid is NULL" && (multiblock != NULL) );
// STEP 2: Get the global extent
int extent[6];
grd->GetExtent( extent );
// STEP 3: Setup extent partitioner
vtkExtentRCBPartitioner *extentPartitioner = vtkExtentRCBPartitioner::New();
assert("pre: extent partitioner is NULL" && (extentPartitioner != NULL) );
extentPartitioner->SetGlobalExtent( extent );
extentPartitioner->SetNumberOfPartitions( this->NumberOfPartitions );
extentPartitioner->SetNumberOfGhostLayers( this->NumberOfGhostLayers );
if(this->DuplicateNodes == 1)
{
extentPartitioner->DuplicateNodesOn();
}
else
{
extentPartitioner->DuplicateNodesOff();
}
// STEP 4: Partition
extentPartitioner->Partition();
// STEP 5: Extract partitions in a multi-block
multiblock->SetNumberOfBlocks( extentPartitioner->GetNumExtents() );
// Set the whole extent of the grid
multiblock->GetInformation()->Set(
vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(),extent,6);
int subext[6];
unsigned int blockIdx = 0;
for( ; blockIdx < multiblock->GetNumberOfBlocks(); ++blockIdx )
{
extentPartitioner->GetPartitionExtent( blockIdx, subext );
vtkStructuredGrid *subgrid = vtkStructuredGrid::New();
subgrid->SetExtent( subext );
vtkPoints *points = this->ExtractSubGridPoints( grd, subext );
assert("pre: subgrid points are NULL" && (points != NULL) );
subgrid->SetPoints( points );
points->Delete();
vtkInformation *metadata = multiblock->GetMetaData( blockIdx );
assert( "pre: metadata is NULL" && (metadata != NULL) );
metadata->Set( vtkDataObject::PIECE_EXTENT(), subext, 6);
multiblock->SetBlock( blockIdx, subgrid );
subgrid->Delete();
} // END for all blocks
extentPartitioner->Delete();
return 1;
}
|
