fei_Filter.hpp

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#ifndef _Filter_hpp_
#define _Filter_hpp_

/*--------------------------------------------------------------------*/
/*    Copyright 2005 Sandia Corporation.                              */
/*    Under the terms of Contract DE-AC04-94AL85000, there is a       */
/*    non-exclusive license for use of this work by or on behalf      */
/*    of the U.S. Government.  Export of this program may require     */
/*    a license from the United States Government.                    */
/*--------------------------------------------------------------------*/

#include <fei_fwd.hpp>
#include <fei_defs.h>
#include <fei_macros.hpp>
#include <fei_iostream.hpp>

class Filter {

 public:
  Filter(SNL_FEI_Structure* probStruct);

  virtual ~Filter();

  virtual int initialize() = 0;

   // set a value (usually zeros) throughout the linear system
   virtual int resetSystem(double s) = 0;
   virtual int resetMatrix(double s) = 0;
   virtual int resetRHSVector(double s) = 0;
   virtual int resetInitialGuess(double s) = 0;

   virtual int deleteMultCRs() = 0;

   virtual int loadNodeBCs(int /*numNodes*/,
                   const GlobalID* /*nodeIDs*/,
                   int /*fieldID*/,
                   const int* /*offsetsIntoField*/,
                   const double* /*prescribedValues*/)
   {
      fei::console_out() << "fei ERROR, Filter::loadNodeBCs not overridden."<<FEI_ENDL;
      return -1;
   }

   virtual int loadElemBCs(int numElems,
                   const GlobalID *elemIDs,
                   int fieldID,
                   const double *const *alpha,  
                   const double *const *beta,  
                   const double *const *gamma) = 0;

   virtual int sumInElem(GlobalID /*elemBlockID*/,
                         GlobalID /*elemID*/,
                         const GlobalID* /*elemConn*/,
                         const double* const* /*elemStiffness*/,
                         const double* /*elemLoad*/,
                           int /*elemFormat*/) { return(0); }

   virtual int sumInElemMatrix(GlobalID /*elemBlockID*/,
                               GlobalID /*elemID*/,
                               const GlobalID* /*elemConn*/,
                               const double* const* /*elemStiffness*/,
                               int /*elemFormat*/) { return(0); }

   virtual int sumInElemRHS(GlobalID /*elemBlockID*/,
                            GlobalID /*elemID*/,
                            const GlobalID* /*elemConn*/,
                            const double* /*elemLoad*/) { return(0); }

    virtual int loadCRMult(int CRMultID, 
                   int numCRNodes,
                   const GlobalID* CRNodes, 
                   const int* CRFields,
                   const double* CRWeights,
                   double CRValue) = 0;

    virtual int loadCRPen(int CRPenID, 
                  int numCRNodes, 
                  const GlobalID* CRNodes,
                  const int *CRFields,
                  const double* CRWeights,
                  double CRValue,
                  double penValue) = 0;

   virtual int putIntoRHS(int IDType,
                  int fieldID,
                          int numIDs,
                  const GlobalID* IDs,
                  const double* rhsEntries) = 0;

   virtual int sumIntoRHS(int IDType,
                  int fieldID,
                          int numIDs,
                  const GlobalID* IDs,
                  const double* rhsEntries) = 0;

   virtual int sumIntoMatrixDiagonal(int /* IDType*/,
                                     int /* fieldID*/,
                                     int /* numIDs*/,
                                     const GlobalID* /* IDs*/,
                                     const double* /* coefficients*/)
   { return -1; }

   virtual int loadComplete() = 0;

    // set parameters associated with solver choice, etc.
    virtual int parameters(int numParams, const char *const* paramStrings);

    //get residual norms
    virtual int residualNorm(int whichNorm, int numFields,
                     int* fieldIDs, double* norms, double& residTime) = 0;

    // start iterative solution
    virtual int solve(int& status, double& sTime) = 0;

    // query function iterations performed.
    virtual int iterations() const = 0;

// Solution return services.......................................
 
    // return all nodal solution params on a block-by-block basis 
    virtual int getBlockNodeSolution(GlobalID elemBlockID,  
                             int numNodes, 
                             const GlobalID *nodeIDs, 
                             int *offsets,
                             double *results) = 0;
 
    virtual int getNodalSolution(int numNodes, 
                                 const GlobalID *nodeIDs, 
                                 int *offsets,
                                 double *results) = 0;

    // return nodal solution for one field on a block-by-block basis 
    virtual int getBlockFieldNodeSolution(GlobalID elemBlockID,
                                  int fieldID,
                                  int numNodes, 
                                  const GlobalID *nodeIDs, 
                                  double *results) = 0;
         
    // return element solution params on a block-by-block basis 
    virtual int getBlockElemSolution(GlobalID elemBlockID,  
                             int numElems, 
                             const GlobalID *elemIDs,
                             int& numElemDOFPerElement,
                             double *results) = 0;

   virtual int getCRMultipliers(int numCRs, const int* CRIDs,
                                double* multipliers) = 0;

// associated "puts" paralleling the solution return services.
// 
// the int sizing parameters are passed for error-checking purposes, so
// that the interface implementation can tell if the passed estimate
// vectors make sense -before- an attempt is made to utilize them as
// initial guesses by unpacking them into the solver's native solution
// vector format (these parameters include lenNodeIDList, lenElemIDList,
// numElemDOF, and numMultCRs -- all other passed params are either 
// vectors or block/constraint-set IDs)

   // put nodal-based solution guess on a block-by-block basis 
   virtual int putBlockNodeSolution(GlobalID elemBlockID,
                            int numNodes,
                            const GlobalID *nodeIDs, 
                            const int *offsets,
                            const double *estimates) = 0;

    // put nodal-based guess for one field on a block-by-block basis 
    virtual int putBlockFieldNodeSolution(GlobalID elemBlockID, 
                                  int fieldID, 
                                  int numNodes, 
                                  const GlobalID *nodeIDs, 
                                  const double *estimates) = 0;
  
    virtual int putBlockElemSolution(GlobalID elemBlockID,  
                                     int numElems, 
                                     const GlobalID *elemIDs, 
                                     int dofPerElem,
                                     const double *estimates) = 0;
  
    virtual int putCRMultipliers(int numMultCRs, 
                         const int* CRIDs,
                         const double *multEstimates) = 0;

//===== a couple of public non-FEI functions... ================================
//These are intended to be used by an 'outer-layer' class like 
//FEI_Implementation.
//
  public:

    virtual int getNodalFieldSolution(int fieldID,
                              int numNodes,
                              const GlobalID* nodeIDs,
                              double* results) = 0;

    virtual int putNodalFieldData(int fieldID,
                          int numNodes,
                          const GlobalID* nodeIDs,
                          const double* nodeData) = 0;

    virtual int putNodalFieldSolution(int fieldID,
                              int numNodes,
                              const GlobalID* nodeIDs,
                              const double* nodeData) = 0;

    virtual int unpackSolution() = 0;

    virtual void setEqnCommMgr(EqnCommMgr* eqnCommMgr) = 0;

   virtual EqnCommMgr* getEqnCommMgr() = 0;

   virtual int setNumRHSVectors(int numRHSs, int* rhsIDs) = 0;
   virtual int setCurrentRHS(int rhsID) = 0;

   virtual int exchangeRemoteEquations() { return 0; }

   virtual int enforceEssentialBCs(const int* eqns, const double* alpha,
                                  const double* gamma, int numEqns) = 0;

   static void copyStiffness(const double* const* elemStiff, int numRows,
                             int elemFormat, double** copy);

   void setLogStream(std::ostream* logstrm);
   std::ostream* logStream();

 protected:
   virtual int generalElemInput(GlobalID /*elemBlockID*/,
                                GlobalID /*elemID*/,
                                const GlobalID* /*elemConn*/,
                                const double* const* /*elemStiffness*/,
                                const double* /*elemLoad*/,
                                  int /*elemFormat*/) {return(-1);}

   int generalCoefInput(int /*patternID*/,
                        const int* /*rowIDTypes*/,
                        const GlobalID* /*rowIDs*/,
                        const int* /*colIDTypes*/,
                        const GlobalID* /*colIDs*/,
                        const double* const* /*matrixEntries*/,
                        const double* /*vectorEntries*/,
                          int /*numRows*/, int /*numCols*/) {return(-1);}

   int calculateResidualNorms(int whichNorm, int numFields,
                              int* fieldIDs, double* norms,
                              std::vector<double>& residValues);

   const NodeDescriptor* findNode(GlobalID nodeID) const;
   const NodeDescriptor& findNodeDescriptor(GlobalID nodeID) const;

   SNL_FEI_Structure* problemStructure_;

   bool logInput_;
   std::ostream* logInputStream_;

   int outputLevel_;

   int numProcs_;
   int localRank_;

 private:
   Filter(const Filter& /*src*/)
     : problemStructure_(NULL), logInput_(false), logInputStream_(NULL),
     outputLevel_(0), numProcs_(0), localRank_(0)
     {}

   Filter& operator=(const Filter& /*src*/)
     {
       return(*this);
     }
};

#endif