/usr/include/trilinos/Epetra_Import_Util.h is in libtrilinos-epetra-dev 12.12.1-5.
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// Epetra: Linear Algebra Services Package
// Copyright 2011 Sandia Corporation
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*/
#ifndef EPETRA_IMPORT_UTIL_H
#define EPETRA_IMPORT_UTIL_H
#include "Epetra_ConfigDefs.h"
#include "Epetra_Object.h"
#include "Epetra_CrsMatrix.h"
#include <vector>
class Epetra_Map;
class Epetra_CrsMatrix;
class Epetra_Import;
//! Epetra_Import_Util: The Epetra ImportUtil Wrapper Namespace.
/*! The Epetra_Import_Util namepsace is a collection of useful functions for data import.
The goal of this is to rmevoe code duplication between Epetra and EpetraExt.
*/
namespace Epetra_Import_Util {
//=========================================================================
//! PackAndPrepareWithOwningPIDs.
/*! Note: The SourcePids vector should contain a list of owning PIDs for each column in the ColMap, as from Epetra_Util::GetPids,
without the "-1 for local" option being used.
\warning This method is intended for expert developer use only, and should never be called by user code.
*/
int PackAndPrepareWithOwningPIDs(const Epetra_CrsMatrix & SourceMatrix,
int NumExportIDs,
int * ExportLIDs,
int & LenExports,
char *& Exports,
int & SizeOfPacket,
int * Sizes,
bool & VarSizes,
std::vector<int>& SourcePids);
// ===================================================================
//! UnpackWithOwningPIDsCount
/*! Counts the number of non-zeros in the resulting matrix. Call this before UnpackAndCombineIntoCrsArrays.
\warning This method is intended for expert developer use only, and should never be called by user code.
*/
int UnpackWithOwningPIDsCount(const Epetra_CrsMatrix& SourceMatrix,
int NumSameIDs,
int NumRemoteIDs,
const int * RemoteLIDs,
int NumPermuteIDs,
const int *PermuteToLIDs,
const int *PermuteFromLIDs,
int LenImports,
char* Imports);
// ===================================================================
//! UnpackAndCombineIntoCrsArrays
/*! You should call UnpackWithOwningPIDsCount first and allocate all arrays accordingly.
Note: The SourcePids vector (on input) should contain of owning PIDs for each column in the ColMap, as from Epetra_Util::GetPids,
with the "-1 for local" option being used.
Note: The TargetPids vector (on output) will contain of owning PIDs for each column in the ColMap, as from Epetra_Util::GetPids,
with the "-1 for local" option being used.
\warning This method is intended for expert developer use only, and should never be called by user code.
*/
int UnpackAndCombineIntoCrsArrays(const Epetra_CrsMatrix& SourceMatrix,
int NumSameIDs,
int NumRemoteIDs,
const int * RemoteLIDs,
int NumPermuteIDs,
const int *PermuteToLIDs,
const int *PermuteFromLIDs,
int LenImports,
char* Imports,
int TargetNumRows,
int TargetNumNonzeros,
int MyTargetPID,
int * CSR_rowptr,
int * CSR_colind,
double * CSR_values,
const std::vector<int> &SourcePids,
std::vector<int> &TargetPids);
// ===================================================================
//! UnpackAndCombineIntoCrsArrays
/*! You should call UnpackWithOwningPIDsCount first and allocate all arrays accordingly.
Note: The SourcePids vector (on input) should contain of owning PIDs for each column in the ColMap, as from Epetra_Util::GetPids,
with the "-1 for local" option being used.
Note: The TargetPids vector (on output) will contain of owning PIDs for each column in the ColMap, as from Epetra_Util::GetPids,
with the "-1 for local" option being used.
\warning This method is intended for expert developer use only, and should never be called by user code.
*/
int UnpackAndCombineIntoCrsArrays(const Epetra_CrsMatrix& SourceMatrix,
int NumSameIDs,
int NumRemoteIDs,
const int * RemoteLIDs,
int NumPermuteIDs,
const int *PermuteToLIDs,
const int *PermuteFromLIDs,
int LenImports,
char* Imports,
int TargetNumRows,
int TargetNumNonzeros,
int MyTargetPID,
int * CSR_rowptr,
long long * CSR_colind,
double * CSR_values,
const std::vector<int> &SourcePids,
std::vector<int> &TargetPids);
// ===================================================================
//! LowCommunicationMakeColMapAndReindex
/*! If you know the owning PIDs already, you can make the colmap a lot less expensively.
Note: The owningPids vector (on input) should contain of owning PIDs for each column in the ColMap, as from Epetra_Util::GetPids,
with the "-1 for local" can be used, or not, here.
Note: This method will return a std::vector of the RemotePIDs, used for construction of the importer.
\warning This method is intended for expert developer use only, and should never be called by user code.
*/
#ifndef EPETRA_NO_32BIT_GLOBAL_INDICES
int LowCommunicationMakeColMapAndReindex(int N, const int *rowptr, int *colind, const Epetra_Map& domainMap,
const int *owningPIDs, bool SortGhostsAssociatedWithEachProcessor,
std::vector<int>& RemotePIDs, Epetra_BlockMap & NewColMap);
#endif
// ===================================================================
//! LowCommunicationMakeColMapAndReindex
/*! If you know the owning PIDs already, you can make the colmap a lot less expensively.
Note: The owningPids vector (on input) should contain of owning PIDs for each column in the ColMap, as from Epetra_Util::GetPids,
with the "-1 for local" can be used, or not, here.
Note: This method will return a std::vector of the RemotePIDs, used for construction of the importer.
\warning This method is intended for expert developer use only, and should never be called by user code.
*/
#ifndef EPETRA_NO_64BIT_GLOBAL_INDICES
int LowCommunicationMakeColMapAndReindex(int N, const int *rowptr, int *colind_LID, long long *colind_GID, const Epetra_Map& domainMap,
const int *owningPIDs, bool SortGhostsAssociatedWithEachProcessor, std::vector<int>& RemotePIDs, Epetra_BlockMap & NewColMap);
#endif
} /* Epetra_Import_Util namespace */
#endif /* EPETRA_IMPORT_UTIL_H */
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