BelosStatusTestUserOutput.hpp

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// @HEADER
// *****************************************************************************
//                 Belos: Block Linear Solvers Package
//
// Copyright 2004-2016 NTESS and the Belos contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER
//
 
#ifndef BELOS_STATUS_TEST_USER_OUTPUT_HPP
#define BELOS_STATUS_TEST_USER_OUTPUT_HPP

 
#include <vector>
#include "BelosConfigDefs.hpp"
#include "BelosTypes.hpp"
#include "BelosIteration.hpp"
 
#include "BelosStatusTest.hpp"
#include "BelosStatusTestCombo.hpp"
#include "BelosStatusTestMaxIters.hpp"
#include "BelosStatusTestResNorm.hpp"
#include "BelosStatusTestOutput.hpp"
 
namespace Belos {

template <class ScalarType, class MV, class OP>
class StatusTestUserOutput : public StatusTestOutput<ScalarType,MV,OP> {
 
  typedef MultiVecTraits<ScalarType,MV> MVT;
  typedef Belos::StatusTestCombo<ScalarType,MV,OP>  StatusTestCombo_t;
  typedef Belos::StatusTestResNorm<ScalarType,MV,OP>  StatusTestResNorm_t;
  typedef Belos::StatusTestMaxIters<ScalarType,MV,OP>  StatusTestMaxIters_t;
 
 public:


  StatusTestUserOutput(const Teuchos::RCP<OutputManager<ScalarType> > &printer,
      Teuchos::RCP<StatusTest<ScalarType,MV,OP> > test,
      Teuchos::RCP<std::map<std::string,Teuchos::RCP<StatusTest<ScalarType,MV,OP> > > > taggedTests,
      int mod = 1,
      int printStates = Passed)
    : printer_(printer),
      taggedTests_(taggedTests),
      state_(Undefined),
      headerPrinted_(false),
      stateTest_(printStates),
      modTest_(mod),
      lastNumIters_(-1),
      comboType_(0),
      blockSize_(1),
      currNumRHS_(0),
      currLSNum_(0),
      numLSDgts_(1),
      numIterDgts_(1)
    {
      // Set the input test.
      setChild(test);
    }

  virtual ~StatusTestUserOutput() {};



  StatusType checkStatus( Iteration<ScalarType,MV,OP>* solver )
  {
    TEUCHOS_TEST_FOR_EXCEPTION(iterTest_ == Teuchos::null,StatusTestError,"StatusTestUserOutput::checkStatus():  iteration test pointer is null.");
    TEUCHOS_TEST_FOR_EXCEPTION(resTestVec_.size() == 0,StatusTestError,"StatusTestUserOutput::checkStatus():  residual test pointer is null.");
    state_ = test_->checkStatus(solver);
 
    // Update some information for the header, if it has not printed or the linear system has changed.
    LinearProblem<ScalarType,MV,OP> currProb = solver->getProblem();
    //if (!headerPrinted_ || currLSNum_ != currProb.getLSNumber()) {
    if (currLSNum_ != currProb.getLSNumber()) {
      currLSNum_ = currProb.getLSNumber();
      blockSize_ = solver->getBlockSize();
      currIdx_ = currProb.getLSIndex();
      currNumRHS_ = currIdx_.size();
      numLSDgts_ = (int)std::floor((double)MVT::GetNumberVecs(*(currProb.getRHS())))+1;
      numIterDgts_ = (int)std::floor(std::log10((double)iterTest_->getMaxIters()))+1;
    }
    // Print out current iteration information if it hasn't already been printed, or the status has changed
    if (((iterTest_->getNumIters() % modTest_ == 0) && (iterTest_->getNumIters()!=lastNumIters_)) || (state_ == Passed)) {
      lastNumIters_ = iterTest_->getNumIters();
      if ( (state_ & stateTest_) == state_) {
        if ( printer_->isVerbosity(StatusTestDetails) ) {
          print( printer_->stream(StatusTestDetails) );
        }
        else if ( printer_->isVerbosity(Debug) ) {
          print( printer_->stream(Debug) );
        }
      }
    }
 
    return state_;
  }

  StatusType getStatus() const {
    return state_;
  }

 



  void setOutputManager(const Teuchos::RCP<OutputManager<ScalarType> > &printer) { printer_ = printer; }

  void setOutputFrequency(int mod) { modTest_ = mod; }

  void setChild(Teuchos::RCP<StatusTest<ScalarType,MV,OP> > test) {
 
    // First check to see if this test is a combination test
    Teuchos::RCP<StatusTestCombo_t> comboTest = Teuchos::rcp_dynamic_cast<StatusTestCombo_t>(test);
    TEUCHOS_TEST_FOR_EXCEPTION(comboTest == Teuchos::null,StatusTestError,"StatusTestUserOutput::setChild: The parameter \"test\" must be a Belos::StatusTestCombo.");
    std::vector<Teuchos::RCP<StatusTest<ScalarType,MV,OP> > > tmpVec = comboTest->getStatusTests();
 
    // Get the number of tests.
    int numTests = tmpVec.size();
 
    // Find the maximum iteration and residual tests
    for (int i=0; i<numTests; ++i) {
 
      // Check if this is a maximum iteration test.
      Teuchos::RCP<StatusTestMaxIters_t> tmpItrTest = Teuchos::rcp_dynamic_cast<StatusTestMaxIters_t>(tmpVec[i]);
      if (tmpItrTest != Teuchos::null) {
        iterTest_ = tmpItrTest;
        continue;
      }
 
      // Check if this is a single residual test
      // this should only be the case if there are no user-specified tests when using the hard-coded solver-
      // specific tests only
      Teuchos::RCP<StatusTestResNorm_t> tmpResTest = Teuchos::rcp_dynamic_cast<StatusTestResNorm_t>(tmpVec[i]);
      // If the residual status test is a single test, put in the vector
      if (tmpResTest != Teuchos::null) {
        resTestVec_.resize( 1 );
        resTestVec_[0] = tmpResTest;
        resTestNamesVec_.resize( 1 );
        resTestNamesVec_[0] = "IMPLICIT RES";
        continue;
      }
 
      // Check if the residual test is a combination of several StatusTestResNorm objects.
      // This should be the standard: we have a combo of the solver-specific tests and user-specific tests
      // The user-specific tests are probably a combo again.
      Teuchos::RCP<StatusTestCombo_t> tmpComboTest = Teuchos::rcp_dynamic_cast<StatusTestCombo_t>(tmpVec[i]);
      TEUCHOS_TEST_FOR_EXCEPTION(tmpComboTest == Teuchos::null,StatusTestError,"StatusTestUserOutput():  test must be Belos::StatusTest[MaxIters|ResNorm|Combo].");
      tmpVec = tmpComboTest->getStatusTests();
      comboType_ = tmpComboTest->getComboType();
 
      // Add only status tests which are not in the user-specified list of tagged status tests
      // More specifically: we want to add the implicit residual test
      typename std::map<std::string,Teuchos::RCP<StatusTest<ScalarType,MV,OP> > >::iterator it;
      for (size_t j=0; j<tmpVec.size(); ++j) {
        tmpResTest = Teuchos::rcp_dynamic_cast<StatusTestResNorm_t>(tmpVec[j]);
 
        if(tmpResTest == Teuchos::null) continue;
 
        bool bFound = false;
        for(it = taggedTests_->begin(); it != taggedTests_->end(); ++it) {
          if(tmpVec[j] == it->second) { bFound = true; break; }
        }
        if(!bFound) {
          resTestVec_.push_back(tmpResTest);
          resTestNamesVec_.push_back("IMPLICIT RES");
        }
      }
 
      // add all tagged tests (the ordering is by the Tag names in alphabetical ordering)
      for(it = taggedTests_->begin(); it != taggedTests_->end(); ++it) {
        resTestVec_.push_back(it->second);
        resTestNamesVec_.push_back(it->first);
      }
    }
 
    // Keep the pointer to the new test and reset the state to Undefined.
    test_ = test;
    state_ = Undefined;
 
  }

  Teuchos::RCP<StatusTest<ScalarType,MV,OP> > getChild() const {
    return test_;
  }

  void setSolverDesc(const std::string& solverDesc) { solverDesc_ = solverDesc; }

  void setPrecondDesc(const std::string& precondDesc) { precondDesc_ = precondDesc; }
 



  void reset() {
    state_ = Undefined;
    test_->reset();
    lastNumIters_ = -1;
    headerPrinted_ = false;
  }


  void resetNumCalls() {}




  void print(std::ostream& os, int indent = 0) const {
    std::string ind(indent,' ');
    std::string starLine(55,'*');
    std::string starFront(5,'*');
 
    std::ios_base::fmtflags osFlags(os.flags());
 
    os.setf(std::ios::scientific, std::ios::floatfield);
    os.precision(6);
 
    // Print header if this is the first call to this output status test.
    if (!headerPrinted_) {
      os << std::endl << ind << starLine << std::endl;
      os << ind << starFront << " Belos Iterative Solver: " << solverDesc_ << std::endl;
      if (precondDesc_ != "")
        os << ind << starFront << " Preconditioner: " << precondDesc_ << std::endl;
      os << ind << starFront << " Maximum Iterations: " << iterTest_->getMaxIters() << std::endl;
      os << ind << starFront << " Block Size: " << blockSize_ << std::endl;
      os << ind << starFront << " Status tests: " << std::endl;
      test_->print(os,indent + 3);
      os << ind << starLine << std::endl;
      os.setf(std::ios_base::right, std::ios_base::adjustfield);
      std::string indheader( 7 + numIterDgts_, ' ' );
      os << indheader;
      for (int i=0; i<currNumRHS_; ++i) {
        if ( i > 0 && currIdx_[i]!=-1 ) {
          // Put in space where 'Iter :' is in the previous lines
          os << ind << indheader;
        }
        os << "[" << std::setw(numLSDgts_) << currIdx_[i]+1 << "] : ";
        for (size_t j=0; j<resTestVec_.size(); ++j) {
          os << std::setw(15) << resTestNamesVec_[j];
        }
        os << std::endl;
      }
      headerPrinted_ = true;
    }
 
    // Print out residuals for each residual test.
    os.setf(std::ios_base::right, std::ios_base::adjustfield);
    std::string ind2( 7 + numIterDgts_, ' ' );
    os << ind << "Iter " << std::setw(numIterDgts_) << iterTest_->getNumIters() << ", ";
    for (int i=0; i<currNumRHS_; ++i) {
      if ( i > 0 && currIdx_[i]!=-1 ) {
        // Put in space where 'Iter :' is in the previous lines
        os << ind << ind2;
      }
      os << "[" << std::setw(numLSDgts_) << currIdx_[i]+1 << "] : ";
      for (size_t j=0; j<resTestVec_.size(); ++j) {
        if ( resTestVec_[j]->getStatus() != Undefined && currIdx_[i]!=-1 ) {
          // distinguish between ResNormTest derived and others
          Teuchos::RCP<StatusTestResNorm_t> tempResTest = Teuchos::rcp_dynamic_cast<StatusTestResNorm_t>(resTestVec_[j]);
          if(tempResTest != Teuchos::null)
            os << std::setw(15) << (*tempResTest->getTestValue())[currIdx_[i]];
          else {
            if(resTestVec_[j]->getStatus() == Belos::Passed)
              os << std::setw(15) << "Passed";
            else if(resTestVec_[j]->getStatus() == Belos::Failed)
              os << std::setw(15) << "Failed";
            else os << std::setw(15) << "Undefined";
          }
        } else {
          os << std::setw(15) << "---";
        }
      }
      os << std::endl;
    }
    // reset os format
    os.flags(osFlags);
  }

 
  private:
    // Output manager.
    Teuchos::RCP<OutputManager<ScalarType> > printer_;
 
    // Overall status test.
    Teuchos::RCP<StatusTest<ScalarType,MV,OP> > test_;
 
    // tagged tests
    Teuchos::RCP<std::map<std::string,Teuchos::RCP<StatusTest<ScalarType,MV,OP> > > > taggedTests_;
 
    // Iteration test (as passed in).
    Teuchos::RCP<StatusTestMaxIters<ScalarType,MV,OP> > iterTest_;

    std::vector<Teuchos::RCP<StatusTest<ScalarType,MV,OP> > > resTestVec_;

    std::vector<std::string> resTestNamesVec_;
 
    std::string solverDesc_;
    std::string precondDesc_;
    std::vector<int> currIdx_;
    StatusType state_;
    mutable bool headerPrinted_;
    int stateTest_, modTest_;
    int lastNumIters_, comboType_;
    int blockSize_;
    int currNumRHS_, currLSNum_;
    int numLSDgts_, numIterDgts_;
};
 
} // end of Belos namespace
 
#endif /* BELOS_STATUS_TEST_USER_OUTPUT_HPP */