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Stokhos_BlockDiagonalOperator.cpp
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41
43#include "EpetraExt_BlockMultiVector.h"
44#include "Epetra_Map.h"
45
48 const Teuchos::RCP<const EpetraExt::MultiComm>& mp_comm_,
49 int num_mp_blocks_,
50 const Teuchos::RCP<const Epetra_Map>& domain_base_map_,
51 const Teuchos::RCP<const Epetra_Map>& range_base_map_,
52 const Teuchos::RCP<const Epetra_Map>& domain_mp_map_,
53 const Teuchos::RCP<const Epetra_Map>& range_mp_map_) :
54 label("Stokhos Block Diagonal Operator"),
55 mp_comm(mp_comm_),
56 num_mp_blocks(num_mp_blocks_),
57 domain_base_map(domain_base_map_),
58 range_base_map(range_base_map_),
59 domain_mp_map(domain_mp_map_),
60 range_mp_map(range_mp_map_),
61 block_ops(),
62 useTranspose(false)
63{
64}
65
70
71void
74 const Teuchos::RCP<Stokhos::ProductEpetraOperator >& ops)
75{
76 block_ops = ops;
77}
78
79Teuchos::RCP< Stokhos::ProductEpetraOperator >
82{
83 return block_ops;
84}
85
86Teuchos::RCP<const Stokhos::ProductEpetraOperator >
88getMPOps() const
89{
90 return block_ops;
91}
92
93int
95SetUseTranspose(bool UseTheTranspose)
96{
97 useTranspose = UseTheTranspose;
98 for (int i=0; i<num_mp_blocks; i++)
99 (*block_ops)[i].SetUseTranspose(useTranspose);
100
101 return 0;
102}
103
104int
106Apply(const Epetra_MultiVector& Input, Epetra_MultiVector& Result) const
107{
108 Teuchos::RCP<const Epetra_BlockMap> input_base_map, result_base_map;
109 if (useTranspose) {
110 input_base_map = range_base_map;
111 result_base_map = domain_base_map;
112 }
113 else {
114 input_base_map = domain_base_map;
115 result_base_map = range_base_map;
116 }
117 EpetraExt::BlockMultiVector mp_input(View, *input_base_map, Input);
118 EpetraExt::BlockMultiVector mp_result(View, *result_base_map, Result);
119 for (int i=0; i<num_mp_blocks; i++) {
120 (*block_ops)[i].Apply(*(mp_input.GetBlock(i)), *(mp_result.GetBlock(i)));
121 }
122
123 return 0;
124}
125
126int
128 Epetra_MultiVector& Result) const
129{
130 Teuchos::RCP<const Epetra_BlockMap> input_base_map, result_base_map;
131 if (useTranspose) {
132 input_base_map = domain_base_map;
133 result_base_map = range_base_map;
134 }
135 else {
136 input_base_map = range_base_map;
137 result_base_map = domain_base_map;
138 }
139 EpetraExt::BlockMultiVector mp_input(View, *input_base_map, Input);
140 EpetraExt::BlockMultiVector mp_result(View, *range_base_map, Result);
141 for (int i=0; i<num_mp_blocks; i++) {
142 (*block_ops)[i].ApplyInverse(*(mp_input.GetBlock(i)),
143 *(mp_result.GetBlock(i)));
144 }
145
146 return 0;
147}
148
149double
151{
152 double product_nrm = 0.0;
153 for (int i=0; i<num_mp_blocks; i++) {
154 double nrm = (*block_ops)[i].NormInf();
155 if (nrm > product_nrm)
156 product_nrm = nrm;
157 }
158
159 return product_nrm;
160}
161
162
163const char*
165{
166 return const_cast<char*>(label.c_str());
167}
168
169bool
171{
172 return useTranspose;
173}
174
175bool
177{
178 if (num_mp_blocks == 0)
179 return false;
180 return (*block_ops)[0].HasNormInf();
181}
182
183const Epetra_Comm &
185{
186 return *mp_comm;
187}
188const Epetra_Map&
190{
191 if (useTranspose)
192 return *range_mp_map;
193 return *domain_mp_map;
194}
195
196const Epetra_Map&
198{
199 if (useTranspose)
200 return *domain_mp_map;
201 return *range_mp_map;
202}
virtual bool HasNormInf() const
Returns true if the this object can provide an approximate Inf-norm, false otherwise.
virtual const Epetra_Map & OperatorRangeMap() const
Returns the Epetra_Map object associated with the range of this matrix operator.
BlockDiagonalOperator(const Teuchos::RCP< const EpetraExt::MultiComm > &mp_comm, int num_mp_blocks, const Teuchos::RCP< const Epetra_Map > &domain_base_map, const Teuchos::RCP< const Epetra_Map > &range_base_map, const Teuchos::RCP< const Epetra_Map > &domain_mp_map, const Teuchos::RCP< const Epetra_Map > &range_mp_map)
Constructor.
virtual int ApplyInverse(const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
Returns the result of the inverse of the operator applied to a Epetra_MultiVector Input in Result as ...
virtual Teuchos::RCP< Stokhos::ProductEpetraOperator > getMPOps()
Get multi-point ops.
virtual double NormInf() const
Returns an approximate infinity norm of the operator matrix.
virtual bool UseTranspose() const
Returns the current UseTranspose setting.
virtual const Epetra_Map & OperatorDomainMap() const
Returns the Epetra_Map object associated with the domain of this matrix operator.
virtual int Apply(const Epetra_MultiVector &Input, Epetra_MultiVector &Result) const
Returns the result of a Epetra_Operator applied to a Epetra_MultiVector Input in Result as described ...
virtual void setupOperator(const Teuchos::RCP< Stokhos::ProductEpetraOperator > &ops)
Setup operator.
virtual const char * Label() const
Returns a character string describing the operator.
virtual int SetUseTranspose(bool UseTranspose)
Set to true if the transpose of the operator is requested.
virtual const Epetra_Comm & Comm() const
Returns a reference to the Epetra_Comm communicator associated with this operator.