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ML
Version of the Day
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ML black-box preconditioner for Epetra_RowMatrix derived classes. More...
#include "ml_common.h"#include "ml_include.h"#include "ml_RowMatrix.h"#include "ml_memory.h"#include "ml_DD_prec.h"#include <iostream>#include <iomanip>#include "Epetra_Map.h"#include "Epetra_Vector.h"#include "Epetra_FECrsMatrix.h"#include "Epetra_VbrMatrix.h"#include "Epetra_SerialDenseMatrix.h"#include "Epetra_SerialDenseVector.h"#include "Epetra_SerialDenseSolver.h"#include "Epetra_Import.h"#include "Epetra_Export.h"#include "Epetra_Time.h"#include "Epetra_Operator.h"#include "Epetra_RowMatrix.h"#include "Epetra_MpiComm.h"#include "ml_amesos_wrap.h"#include "ml_agg_METIS.h"#include "ml_epetra_utils.h"#include "ml_epetra.h"#include "ml_MultiLevelPreconditioner.h"#include "ml_agg_ParMETIS.h"#include "ml_anasazi.h"#include "ml_FilterType.h"#include "ml_ValidateParameters.h"#include "EpetraExt_RowMatrixOut.h"#include "EpetraExt_OperatorOut.h"#include "ml_ifpack_wrap.h"#include "ml_viz_stats.h"#include "ml_agg_user.h"
Functions | |
| int | MLcolGlobalIds (struct wrappedCommStruct &framework, MLVec< int > &myGids) |
| int | dofCommUsingMlNodalMatrix (double *data, void *widget) |
| int | MLnMyGhost (struct wrappedCommStruct &framework) |
| int | MLShove (ML_Operator *Mat, MLVec< int > &rowPtr, MLVec< int > &cols, MLVec< double > &vals, int invec_leng, int(*commfunc)(double *vec, void *data), struct wrappedCommStruct &framework, int nGhost) |
| Take Crs std::vec's, make arrays and shove them into an ML Operator. More... | |
| int | MLextractDiag (const MLVec< int > &rowPtr, const MLVec< int > &cols, const MLVec< double > &vals, MLVec< double > &diagonal, struct wrappedCommStruct &framework) |
| int | MLfindDirichlets (const MLVec< int > &rowPtr, const MLVec< int > &cols, const MLVec< double > &vals, const MLVec< double > &diagonal, double tol, MLVec< bool > &dirOrNot, struct wrappedCommStruct &framework) |
| int | MLrmDirichletCols (MLVec< int > &rowPtr, MLVec< int > &cols, MLVec< double > &vals, const MLVec< double > &diagonal, bool squeeze, MLVec< double > &solution, MLVec< double > &rhs, const MLVec< bool > &dirOrNot, struct wrappedCommStruct &framework) |
| int | MLsqueezeOutNnzs (MLVec< int > &rowPtr, MLVec< int > &cols, MLVec< double > &vals, const MLVec< bool > &keep) |
| int | MLbuildMap (const MLVec< bool > &dofPresent, MLVec< int > &map, int nDofs) |
| int | MLassignGhostLocalNodeIds (MLVec< int > &myLocalNodeIds, int nLocalDofs, int nLocalPlusGhostDofs, struct wrappedCommStruct &framework, int &nLocalNodes, int &nLocalPlusGhostNodes) |
| int | MLfillNodalMaps (MLVec< int > &amalgRowMap, MLVec< int > &amalgColMap, MLVec< int > &myLocalNodeIds, int nLocalDofs, struct wrappedCommStruct &framework, int nLocalNodes, int nLocalPlusGhostNodes) |
| int | MLvariableDofAmalg (int nCols, const MLVec< int > &rowPtr, const MLVec< int > &cols, const MLVec< double > &vals, int nNodes, int maxDofPerNode, const MLVec< int > &map, const MLVec< double > &diag, double tol, MLVec< int > &amalgRowPtr, MLVec< int > &amalgCols, struct wrappedCommStruct &, MLVec< int > &myLocalNodeIds) |
| int | MLrmDifferentDofsCrossings (const MLVec< bool > &dofPresent, int maxDofPerNode, MLVec< int > &rowPtr, MLVec< int > &cols, int nCols, struct wrappedCommStruct &framework, MLVec< int > &myLocalNodeIds) |
| int | MLbuildLaplacian (const MLVec< int > &rowPtr, const MLVec< int > &cols, MLVec< double > &vals, const MLVec< double > &x, const MLVec< double > &y, const MLVec< double > &z) |
| int | MLunamalgP (const MLVec< int > &amalgRowPtr, const MLVec< int > &amalgCols, const MLVec< double > &amalgVals, int maxDofPerNode, const MLVec< char > &status, bool fineIsPadded, MLVec< int > &rowPtr, MLVec< int > &cols, MLVec< double > &vals) |
| Unamalgamate prolongator so that it is suitable for PDE systems. More... | |
| int | MLfindEmptyRows (const MLVec< int > &rowPtr, const MLVec< int > &, const MLVec< double > &vals, MLVec< bool > &rowEmpty) |
| int | MLreplaceEmptyByDirichlet (MLVec< int > &rowPtr, MLVec< int > &cols, MLVec< double > &vals, const MLVec< bool > &rowEmpty) |
| int | MLfineStatus (const MLVec< bool > &dofPresent, const MLVec< int > &map, const MLVec< bool > &dirOrNot, MLVec< char > &status) |
| int | MLcoarseStatus (const MLVec< bool > &rowEmpty, const MLVec< bool > &dirOrNot, MLVec< char > &status) |
| int | MLsortCols (const MLVec< int > &ARowPtr, MLVec< int > &ACols, MLVec< double > &AVals) |
| int | MergeShared (MLVec< int > &, MLVec< int > &rowZeros, MLVec< int > &colZeros, MLVec< int > &groupHead, MLVec< int > &groupNext) |
| int | ZeroDist (MLVec< double > &xxx, MLVec< double > &yyy, MLVec< double > &zzz, MLVec< int > &rowPtr, MLVec< int > &cols, MLVec< double > &vals, MLVec< double > &diagonal, double tol, MLVec< int > &rowZeros, MLVec< int > &colZeros, double disttol) |
| int | BuildNonSharedMap (MLVec< int > &newMap, MLVec< int > &groupHead, MLVec< int > &groupNext) |
| int | buildCompressedA (MLVec< int > &inputRowPtr, MLVec< int > &inputCols, MLVec< double > &inputVals, MLVec< double > &diagonal, MLVec< int > &groupHead, MLVec< int > &groupNext, MLVec< int > &outputRowPtr, MLVec< int > &outputCols, MLVec< int > &map, int newN, double tol) |
ML black-box preconditioner for Epetra_RowMatrix derived classes.
| int MLShove | ( | ML_Operator * | Mat, |
| MLVec< int > & | rowPtr, | ||
| MLVec< int > & | cols, | ||
| MLVec< double > & | vals, | ||
| int | invec_leng, | ||
| int(*)(double *vec, void *data) | commfunc, | ||
| struct wrappedCommStruct & | framework, | ||
| int | nGhost | ||
| ) |
Take Crs std::vec's, make arrays and shove them into an ML Operator.
This includes allocating double arrays and a widget to point to them and calling all the appropriate ML functions to clean out what used to be in the operator before inserting the new matrix.
| [in] | rowPtr,cols,vals | Crs matrix std:vectors |
| Mat | On input, a populated ML Operator. On output, old ML Operator is cleaned and a new Crs matrix is filled into the operator |
References ML_Operator_Struct::N_nonzeros.
Referenced by ML_Epetra::MultiLevelPreconditioner::MultiLevelPreconditioner().
| int MLunamalgP | ( | const MLVec< int > & | amalgRowPtr, |
| const MLVec< int > & | amalgCols, | ||
| const MLVec< double > & | amalgVals, | ||
| int | maxDofPerNode, | ||
| const MLVec< char > & | status, | ||
| bool | fineIsPadded, | ||
| MLVec< int > & | rowPtr, | ||
| MLVec< int > & | cols, | ||
| MLVec< double > & | vals | ||
| ) |
Unamalgamate prolongator so that it is suitable for PDE systems.
Unamalgamate Pmat (represented as a CRS matrix via amalgRowPtr, amalgCols, amalgVals for two different situations: Case 1: Fine level matrix is padded In this case, we basically replicate the unamalgamated operator, except that padded dofs and Dirichlet points use injection. Thus, PUnAmalg is equivalent to something like ( Pmat 0 0 ) ( 0 Pmat 0 ) ( 0 0 Pmat ) where entries associated with fine level padded dofs or Dir. BCs are replaced by rows with a single nonzero (whose value equals one) and the entire matrix is instead ordered so that dofs associated with nodes are consecutive.
Case 2: Fine level matrix is not padded. Thus, PUnAmalg is equivalent to ( Pmat 0 0 ) ( 0 Pmat 0 ) ( 0 0 Pmat ) where rows associated with dofs not present on finest level (e.g., an air pressure dof within water region) are removed and rows associated with Dir. BCs are replaced by rows with a single nonzero (whose value equals one) and the entire matrix is instead ordered so dofs associated with nodes are consecutive.
In both of the above cases, the coarse level discretization matrix is assumed to be padded.
amalgNRows local number of rows for amalgamted prolongator amalgRowPtr CRS local row pointer for amalgamted prolongator amalgCols CRS local cols for amalgamted prolongator amalgVals CRS vals for amalgamted prolongator maxDofPerNode maximum number of degrees-of-freedom at any mesh node status status[i*maxDofPerNode+j] refers to the jth dof at the ith node. status()==s ==> standard element: present in fine operator and not a Dirichlet BC. status()==d ==> element corresponds to Dirichlet BC. status()==p ==> element not present or is padded dof. fineIsPadded Indicates whether fine grid matrix includes padded dofs for those not really present in the PDE system rowPtr CRS local row pointer for resulting unamalgamated prolongator cols CRS local cols for resulting unamalgamated prolongator vals CRS vals for resulting unamalgamated prolongator
Referenced by ML_Epetra::MultiLevelPreconditioner::MultiLevelPreconditioner().
1.8.5