43 #include "Ifpack_ConfigDefs.h"
44 #include "Ifpack_SILU.h"
45 #ifdef HAVE_IFPACK_SUPERLU
47 #include "Ifpack_CondestType.h"
48 #include "Epetra_ConfigDefs.h"
49 #include "Epetra_Comm.h"
50 #include "Epetra_Map.h"
51 #include "Epetra_RowMatrix.h"
52 #include "Epetra_Vector.h"
53 #include "Epetra_MultiVector.h"
54 #include "Epetra_CrsGraph.h"
55 #include "Epetra_CrsMatrix.h"
56 #include "Teuchos_ParameterList.hpp"
57 #include "Teuchos_RefCountPtr.hpp"
60 extern "C" {
int dfill_diag(
int n, NCformat *Astore);}
62 using Teuchos::RefCountPtr;
65 #ifdef IFPACK_TEUCHOS_TIME_MONITOR
66 # include "Teuchos_TimeMonitor.hpp"
71 A_(rcp(Matrix_in,false)),
72 Comm_(Matrix_in->Comm()),
80 IsInitialized_(false),
87 ApplyInverseTime_(0.0),
93 Teuchos::ParameterList List;
101 void Ifpack_SILU::Destroy()
107 Destroy_CompCol_Permuted(&SAc_);
108 Destroy_SuperNode_Matrix(&SL_);
109 Destroy_CompCol_Matrix(&SU_);
112 Destroy_SuperMatrix_Store(&SA_);
113 if(SY_.Store) Destroy_SuperMatrix_Store(&SY_);
117 delete [] etree_;etree_=0;
118 delete [] perm_r_;perm_r_=0;
119 delete [] perm_c_;perm_c_=0;
126 DropTol_=List.get(
"fact: drop tolerance",DropTol_);
127 FillTol_=List.get(
"fact: zero pivot threshold",FillTol_);
128 FillFactor_=List.get(
"fact: maximum fill factor",FillFactor_);
129 DropRule_=List.get(
"fact: silu drop rule",DropRule_);
132 sprintf(Label_,
"IFPACK SILU (drop=%d, zpv=%f, ffact=%f, rthr=%f)",
133 DropRule(),FillTol(),FillFactor(),DropTol());
138 template<
typename int_type>
139 int Ifpack_SILU::TInitialize()
142 #ifdef IFPACK_TEUCHOS_TIME_MONITOR
143 TEUCHOS_FUNC_TIME_MONITOR(
"Ifpack_SILU::Initialize");
151 IsInitialized_ =
false;
158 Aover_=rcp(CrsMatrix,
false);
162 int size = A_->MaxNumEntries();
163 int N=A_->NumMyRows();
165 std::vector<int_type> Indices(size);
166 std::vector<double> Values(size);
168 int i,j,ct,*rowptr,*colind;
174 for(j=rowptr[i],ct=0;j<rowptr[i+1];j++){
176 Indices[ct]= (int_type) CrsMatrix->GCID64(colind[j]);
177 Values[ct]=values[j];
181 Aover_->InsertGlobalValues((int_type) CrsMatrix->GRID64(i),ct,&Values[0],&Indices[0]);
183 IFPACK_CHK_ERR(Aover_->FillComplete(CrsMatrix->
RowMap(),CrsMatrix->
RowMap()));
187 int size = A_->MaxNumEntries();
189 if (Aover_.get() == 0) IFPACK_CHK_ERR(-5);
191 std::vector<int> Indices1(size);
192 std::vector<int_type> Indices2(size);
193 std::vector<double> Values1(size),Values2(size);
197 int N=A_->NumMyRows();
198 for (
int i = 0 ; i < N ; ++i) {
200 int_type GlobalRow = (int_type) A_->RowMatrixRowMap().GID64(i);
201 IFPACK_CHK_ERR(A_->ExtractMyRowCopy(i, size, NumEntries,
202 &Values1[0], &Indices1[0]));
206 for (
int j=0; j < NumEntries ; ++j) {
208 Indices2[ct] = (int_type) A_->RowMatrixColMap().GID64(Indices1[j]);
209 Values2[ct]=Values1[j];
213 IFPACK_CHK_ERR(Aover_->InsertGlobalValues(GlobalRow,ct,
214 &Values2[0],&Indices2[0]));
216 IFPACK_CHK_ERR(Aover_->FillComplete(A_->RowMatrixRowMap(),A_->RowMatrixRowMap()));
220 Aover_->OptimizeStorage();
221 Graph_=rcp(const_cast<Epetra_CrsGraph*>(&Aover_->Graph()),
false);
223 IsInitialized_ =
true;
231 #ifndef EPETRA_NO_32BIT_GLOBAL_INDICES
232 if(A_->RowMatrixRowMap().GlobalIndicesInt()) {
233 return TInitialize<int>();
237 #ifndef EPETRA_NO_64BIT_GLOBAL_INDICES
238 if(A_->RowMatrixRowMap().GlobalIndicesLongLong()) {
239 return TInitialize<long long>();
243 throw "Ifpack_SILU::Initialize: GlobalIndices type unknown for A_";
251 #ifdef IFPACK_TEUCHOS_TIME_MONITOR
252 TEUCHOS_FUNC_TIME_MONITOR(
"Ifpack_SILU::Compute");
263 ilu_set_default_options(&options_);
264 options_.ILU_DropTol=DropTol_;
265 options_.ILU_FillTol=FillTol_;
266 options_.ILU_DropRule=DropRule_;
267 options_.ILU_FillFactor=FillFactor_;
272 IFPACK_CHK_ERR(Aover_->ExtractCrsDataPointers(rowptr,colind,values));
273 int N=Aover_->NumMyRows();
276 dCreate_CompCol_Matrix(&SA_,N,N,Aover_->NumMyNonzeros(),
277 values,colind,rowptr,SLU_NC,SLU_D,SLU_GE);
281 dfill_diag(N, (NCformat*)SA_.Store);
289 int permc_spec=options_.ColPerm;
290 if ( permc_spec != MY_PERMC && options_.Fact == DOFACT )
291 get_perm_c(permc_spec,&SA_,perm_c_);
294 sp_preorder(&options_, &SA_, perm_c_, etree_, &SAc_);
297 int panel_size = sp_ienv(1);
298 int relax = sp_ienv(2);
300 dgsitrf(&options_,&SAc_,relax,panel_size,etree_,NULL,0,perm_c_,perm_r_,&SL_,&SU_,
301 #ifdef HAVE_IFPACK_SUPERLU5_API
305 if(info<0) IFPACK_CHK_ERR(info);
319 #ifdef IFPACK_TEUCHOS_TIME_MONITOR
320 TEUCHOS_FUNC_TIME_MONITOR(
"Ifpack_SILU::ApplyInverse - Solve");
325 int nrhs=X.NumVectors();
326 int N=A_->NumMyRows();
333 if(SY_.Store) Destroy_SuperMatrix_Store(&SY_);
335 dCreate_Dense_Matrix(&SY_,N,nrhs,Y[0],N,SLU_DN,SLU_D,SLU_GE);
338 dgstrs(TRANS,&SL_,&SU_,perm_c_,perm_r_,&SY_,&stat_,&info);
339 if(!info) IFPACK_CHK_ERR(info);
362 #ifdef IFPACK_TEUCHOS_TIME_MONITOR
363 TEUCHOS_FUNC_TIME_MONITOR(
"Ifpack_SILU::ApplyInverse");
369 if (X.NumVectors() != Y.NumVectors())
376 Teuchos::RefCountPtr< const Epetra_MultiVector > Xcopy;
377 if (X.Pointers()[0] == Y.Pointers()[0])
380 Xcopy = Teuchos::rcp( &X,
false );
393 const int MaxIters,
const double Tol,
397 #ifdef IFPACK_TEUCHOS_TIME_MONITOR
398 TEUCHOS_FUNC_TIME_MONITOR(
"Ifpack_SILU::Condest");
404 Condest_ = Ifpack_Condest(*
this, CT, MaxIters, Tol, Matrix_in);
415 if (!
Comm().MyPID()) {
417 os <<
"================================================================================" << endl;
418 os <<
"Ifpack_SILU: " <<
Label() << endl << endl;
419 os <<
"Dropping rule = "<< DropRule() << endl;
420 os <<
"Zero pivot thresh = "<< FillTol() << endl;
421 os <<
"Max fill factor = "<< FillFactor() << endl;
422 os <<
"Drop tolerance = "<< DropTol() << endl;
423 os <<
"Condition number estimate = " <<
Condest() << endl;
424 os <<
"Global number of rows = " << A_->NumGlobalRows64() << endl;
428 if(SL_.Store) fnnz+=((SCformat*)SL_.Store)->nnz;
429 if(SU_.Store) fnnz+=((NCformat*)SU_.Store)->nnz;
430 int lufill=fnnz - A_->NumMyRows();
431 os <<
"No. of nonzeros in L+U = "<< lufill<<endl;
432 os <<
"Fill ratio: nnz(F)/nnz(A) = "<<(double)lufill / (
double)A_->NumMyNonzeros()<<endl;
435 os <<
"Phase # calls Total Time (s) Total MFlops MFlops/s" << endl;
436 os <<
"----- ------- -------------- ------------ --------" << endl;
439 <<
" 0.0 0.0" << endl;
440 os <<
"Compute() " << std::setw(5) <<
NumCompute()
446 os <<
" " << std::setw(15) << 0.0 << endl;
453 os <<
" " << std::setw(15) << 0.0 << endl;
454 os <<
"================================================================================" << endl;
virtual double ApplyInverseTime() const
Returns the time spent in ApplyInverse().
const char * Label() const
Returns a character string describing the operator.
Ifpack_SILU(Epetra_RowMatrix *A)
Constructor.
bool SameAs(const Epetra_BlockMap &Map) const
virtual int NumInitialize() const
Returns the number of calls to Initialize().
double ElapsedTime(void) const
bool UseTranspose() const
Returns the current UseTranspose setting.
int ApplyInverse(const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
Returns the result of a Epetra_Operator inverse applied to an Epetra_MultiVector X in Y...
const Epetra_Map & ColMap() const
virtual double InitializeTime() const
Returns the time spent in Initialize().
bool IsInitialized() const
Returns true if the preconditioner has been successfully initialized.
const Epetra_Map & RowMap() const
virtual std::ostream & Print(std::ostream &os) const
Prints on stream basic information about this object.
int Compute()
Compute ILU factors L and U using the specified graph, diagonal perturbation thresholds and relaxatio...
int Initialize()
Initialize the preconditioner, does not touch matrix values.
int SetParameters(Teuchos::ParameterList ¶meterlist)
Set parameters using a Teuchos::ParameterList object.
bool IndicesAreContiguous() const
bool IsComputed() const
If factor is completed, this query returns true, otherwise it returns false.
virtual double ComputeTime() const
Returns the time spent in Compute().
virtual double ApplyInverseFlops() const
Returns the number of flops in the application of the preconditioner.
virtual int NumCompute() const
Returns the number of calls to Compute().
const Epetra_Comm & Comm() const
Returns the Epetra_BlockMap object associated with the range of this matrix operator.
virtual int NumApplyInverse() const
Returns the number of calls to ApplyInverse().
virtual double ComputeFlops() const
Returns the number of flops in the computation phase.
void ResetStartTime(void)
double Condest() const
Returns the computed estimated condition number, or -1.0 if not computed.
int ExtractCrsDataPointers(int *&IndexOffset, int *&Indices, double *&Values_in) const