C++ SweepParams::set_sweep_parameters方法代码示例

//Initialize stateinfo using the rotation matrices
void SpinAdapted::Sweep::InitializeStateInfo(SweepParams &sweepParams, const bool &forward, int currentstate)
{
  sweepParams.set_sweep_parameters();
  sweepParams.set_block_iter() = 0;

  std::vector<int> sites;
  int new_site, wave_site;
  if (forward) 
    new_site = 0;
  else 
    new_site = dmrginp.spinAdapted() ? dmrginp.last_site()-1 : dmrginp.last_site()/2-1;

  if (dmrginp.spinAdapted())
    sites.push_back(new_site);
  else {
    sites.push_back(2*new_site);
    sites.push_back(2*new_site+1);
    std::sort(sites.begin(), sites.end());
  }
    
  //only need statinfos
  StateInfo stateInfo1; makeStateInfo(stateInfo1, new_site);
  StateInfo::store(forward, sites, stateInfo1, currentstate);
  
  for (; sweepParams.get_block_iter() < sweepParams.get_n_iters(); ) {
      
    if (forward) 
      new_site++;
    else 
      new_site--;

    if (dmrginp.spinAdapted())
      sites.push_back(new_site);
    else {
      sites.push_back(2*new_site);
      sites.push_back(2*new_site+1);
      std::sort(sites.begin(), sites.end());
    }

    
    StateInfo siteState, newState1; 
    makeStateInfo(siteState, new_site);
    TensorProduct(stateInfo1, siteState, newState1, NO_PARTICLE_SPIN_NUMBER_CONSTRAINT);
    newState1.CollectQuanta();
  
      
    //make the newstate
    std::vector<Matrix> rotation1; 
      
    LoadRotationMatrix (sites, rotation1, currentstate);
    
    StateInfo renormState1;
    SpinAdapted::StateInfo::transform_state(rotation1, newState1, renormState1);
    StateInfo::store(forward, sites, renormState1, currentstate);
    stateInfo1 = renormState1;
    ++sweepParams.set_block_iter();
  }
  
}

void SpinAdapted::Sweep::tiny(double sweep_tol)
{
#ifndef SERIAL
  if(mpigetrank() == 0) {
#endif
    pout.precision(12);

  int nroots = dmrginp.nroots(0);
  SweepParams sweepParams;
  sweepParams.set_sweep_parameters();
  StackSpinBlock system(0,dmrginp.last_site()-1, 0, true);
  const StateInfo& sinfo = system.get_stateInfo();
  SpinQuantum hq(0,SpinSpace(0),IrrepSpace(0));
  for (int i=0; i<sinfo.totalStates; i++) {
    if (sinfo.quanta[i] == dmrginp.molecule_quantum()) {
      StackMatrix& h = system.get_op_array(HAM).get_element(0).at(0)->operator_element(i,i);
      DiagonalMatrix energies(h.Nrows()); energies = 0.0;
      diagonalise(h, energies);
      
      for (int x=0; x<nroots; x++) 
	pout << "fullci energy  "<< energies(x+1)<<endl;

      if (mpigetrank() == 0)
      {
#ifndef MOLPRO
	FILE* f = fopen("dmrg.e", "wb");
#else
	std::string efile;
	efile = str(boost::format("%s%s") % dmrginp.load_prefix() % "/dmrg.e" );
	FILE* f = fopen(efile.c_str(), "wb");
#endif
	
	for(int j=0;j<nroots;++j) {
	  double e = energies(j+1); 
	  fwrite( &e, 1, sizeof(double), f);
	}
	fclose(f);
      }

      return;
    }
  }

  pout << "The wavefunction symmetry is not possible with the orbitals supplied."<<endl;
  abort();
#ifndef SERIAL
  }
#endif
}

double SweepOnepdm::do_one(SweepParams &sweepParams, const bool &warmUp, const bool &forward, const bool &restart, const int &restartSize)
{

  SpinBlock system;
  const int nroots = dmrginp.nroots();
  std::vector<double> finalEnergy(nroots,0.);
  std::vector<double> finalEnergy_spins(nroots,0.);
  double finalError = 0.;

  Matrix onepdm(2*dmrginp.last_site(), 2*dmrginp.last_site());onepdm=0.0;
  for (int i=0; i<nroots; i++)
    for (int j=0; j<=i; j++)      
      save_onepdm_binary(onepdm, i ,j);

  sweepParams.set_sweep_parameters();
  // a new renormalisation sweep routine
  pout << ((forward) ? "\t\t\t Starting renormalisation sweep in forwards direction" : "\t\t\t Starting renormalisation sweep in backwards direction") << endl;
  pout << "\t\t\t ============================================================================ " << endl;
  
  InitBlocks::InitStartingBlock (system,forward, sweepParams.get_forward_starting_size(), sweepParams.get_backward_starting_size(), restartSize, restart, warmUp);

  sweepParams.set_block_iter() = 0;
 
  pout << "\t\t\t Starting block is :: " << endl << system << endl;

  SpinBlock::store (forward, system.get_sites(), system); // if restart, just restoring an existing block --
  sweepParams.savestate(forward, system.get_sites().size());
  bool dot_with_sys = true;

  sweepParams.set_guesstype() = TRANSPOSE;
	  
  SpinBlock newSystem;
  BlockAndDecimate (sweepParams, system, newSystem, warmUp, dot_with_sys);
  pout.precision(12);
  pout << "\t\t\t The lowest sweep energy : "<< sweepParams.get_lowest_energy()[0]+dmrginp.get_coreenergy()<<endl;
  pout << "\t\t\t ============================================================================ " << endl;

  for (int i=0; i<nroots; i++)
    for (int j=0; j<=i; j++) {
      load_onepdm_binary(onepdm, i ,j);
      accumulate_onepdm(onepdm);
      save_onepdm_spatial_text(onepdm, i ,j);
      save_onepdm_text(onepdm, i ,j);
      save_onepdm_spatial_binary(onepdm, i ,j);
    }
  return sweepParams.get_lowest_energy()[0];
}

double SweepTwopdm::do_one(SweepParams &sweepParams, const bool &warmUp, const bool &forward, const bool &restart, const int &restartSize, int state)
{
  Timer sweeptimer;
  int integralIndex = 0;
  if (dmrginp.hamiltonian() == BCS) {
    pout << "Two PDM with BCS calculations is not implemented" << endl;
    exit(0);
  }
  pout.precision(12);
  SpinBlock system;
  const int nroots = dmrginp.nroots();
  std::vector<double> finalEnergy(nroots,0.);
  std::vector<double> finalEnergy_spins(nroots,0.);
  double finalError = 0.;

  sweepParams.set_sweep_parameters();
  // a new renormalisation sweep routine
  pout << ((forward) ? "\t\t\t Starting renormalisation sweep in forwards direction" : "\t\t\t Starting renormalisation sweep in backwards direction") << endl;
  pout << "\t\t\t ============================================================================ " << endl;
  
  InitBlocks::InitStartingBlock (system,forward, sweepParams.current_root(), sweepParams.current_root(), sweepParams.get_forward_starting_size(), sweepParams.get_backward_starting_size(), restartSize, restart, warmUp, integralIndex);
  if(!restart)
    sweepParams.set_block_iter() = 0;
 
  pout << "\t\t\t Starting block is :: " << endl << system << endl;
  if (!restart) 
    SpinBlock::store (forward, system.get_sites(), system, sweepParams.current_root(), sweepParams.current_root()); // if restart, just restoring an existing block --
  sweepParams.savestate(forward, system.get_sites().size());
  bool dot_with_sys = true;

  array_4d<double> twopdm(2*dmrginp.last_site(), 2*dmrginp.last_site(), 2*dmrginp.last_site(), 2*dmrginp.last_site());
  twopdm.Clear();

  save_twopdm_binary(twopdm, state, state); 


  for (; sweepParams.get_block_iter() < sweepParams.get_n_iters(); )
    {
      pout << "\n\t\t\t Block Iteration :: " << sweepParams.get_block_iter() << endl;
      pout << "\t\t\t ----------------------------" << endl;
      if (forward)
	p1out << "\t\t\t Current direction is :: Forwards " << endl;
      else
	p1out << "\t\t\t Current direction is :: Backwards " << endl;

      //if (SHOW_MORE) pout << "system block" << endl << system << endl;
  
      if (dmrginp.no_transform())
	      sweepParams.set_guesstype() = BASIC;
      else if (!warmUp && sweepParams.get_block_iter() != 0) 
  	    sweepParams.set_guesstype() = TRANSFORM;
      else if (!warmUp && sweepParams.get_block_iter() == 0 && 
                ((dmrginp.algorithm_method() == TWODOT_TO_ONEDOT && dmrginp.twodot_to_onedot_iter() != sweepParams.get_sweep_iter()) ||
                  dmrginp.algorithm_method() != TWODOT_TO_ONEDOT))
        sweepParams.set_guesstype() = TRANSPOSE;
      else
        sweepParams.set_guesstype() = BASIC;
      
      p1out << "\t\t\t Blocking and Decimating " << endl;
	  
      SpinBlock newSystem;

      BlockAndDecimate (sweepParams, system, newSystem, warmUp, dot_with_sys, state);

      for(int j=0;j<nroots;++j)
        pout << "\t\t\t Total block energy for State [ " << j << 
	  " ] with " << sweepParams.get_keep_states()<<" :: " << sweepParams.get_lowest_energy()[j] <<endl;              

      finalEnergy_spins = ((sweepParams.get_lowest_energy()[0] < finalEnergy[0]) ? sweepParams.get_lowest_energy_spins() : finalEnergy_spins);
      finalEnergy = ((sweepParams.get_lowest_energy()[0] < finalEnergy[0]) ? sweepParams.get_lowest_energy() : finalEnergy);
      finalError = max(sweepParams.get_lowest_error(),finalError);

      system = newSystem;

      pout << system<<endl;
      
      SpinBlock::store (forward, system.get_sites(), system, sweepParams.current_root(), sweepParams.current_root());	 	

      p1out << "\t\t\t saving state " << system.get_sites().size() << endl;
      ++sweepParams.set_block_iter();
      //sweepParams.savestate(forward, system.get_sites().size());
    }
  //for(int j=0;j<nroots;++j)
  {int j = state;
    pout << "\t\t\t Finished Sweep with " << sweepParams.get_keep_states() << " states and sweep energy for State [ " << j 
	 << " ] with Spin [ " << dmrginp.molecule_quantum().get_s()  << " ] :: " << finalEnergy[j] << endl;
  }
  pout << "\t\t\t Largest Error for Sweep with " << sweepParams.get_keep_states() << " states is " << finalError << endl;
  pout << "\t\t\t ============================================================================ " << endl;

  int i = state, j = state;
  //for (int j=0; j<=i; j++) {
  load_twopdm_binary(twopdm, i, j); 
  //calcenergy(twopdm, i);
  save_twopdm_text(twopdm, i, j);
  save_spatial_twopdm_text(twopdm, i, j);
  save_spatial_twopdm_binary(twopdm, i, j);
  

  // update the static number of iterations
//.........这里部分代码省略.........

//before you start optimizing each state you want to initalize all the overlap matrices
void Sweep::InitializeOverlapSpinBlocks(SweepParams &sweepParams, const bool &forward, int stateA, int stateB)
{
  SpinBlock system;

  sweepParams.set_sweep_parameters();
  if (forward)
    pout << "\t\t\t Starting sweep "<< sweepParams.set_sweep_iter()<<" in forwards direction"<<endl;
  else
    pout << "\t\t\t Starting sweep "<< sweepParams.set_sweep_iter()<<" in backwards direction" << endl;
  pout << "\t\t\t ============================================================================ " << endl;

  int restartSize = 0; bool restart = false, warmUp = false;
  InitBlocks::InitStartingBlock (system,forward, stateA, stateB, sweepParams.get_forward_starting_size(), sweepParams.get_backward_starting_size(), restartSize, restart, warmUp);

  sweepParams.set_block_iter() = 0;

 
  if (dmrginp.outputlevel() > 0)
    pout << "\t\t\t Starting block is :: " << endl << system << endl;

  SpinBlock::store (forward, system.get_sites(), system, stateA, stateB); // if restart, just restoring an existing block --
  sweepParams.savestate(forward, system.get_sites().size());
  bool dot_with_sys = true;
  vector<int> syssites = system.get_sites();

  if (dmrginp.outputlevel() > 0)
    mcheck("at the very start of sweep");  // just timer

  for (; sweepParams.get_block_iter() < sweepParams.get_n_iters(); ) // get_n_iters() returns the number of blocking iterations needed in one sweep
    {
      pout << "\t\t\t Block Iteration :: " << sweepParams.get_block_iter() << endl;
      pout << "\t\t\t ----------------------------" << endl;
      if (dmrginp.outputlevel() > 0) {
	if (forward)  pout << "\t\t\t Current direction is :: Forwards " << endl;
	else  pout << "\t\t\t Current direction is :: Backwards " << endl;
      }

      SpinBlock systemDot, environmentDot;
      int systemDotStart, systemDotEnd;
      int systemDotSize = sweepParams.get_sys_add() - 1;
      if (forward)
	{
	  systemDotStart = dmrginp.spinAdapted() ? *system.get_sites().rbegin () + 1 : (*system.get_sites().rbegin ())/2 + 1 ;
	  systemDotEnd = systemDotStart + systemDotSize;
	}
      else
	{
	  systemDotStart = dmrginp.spinAdapted() ? system.get_sites()[0] - 1 : (system.get_sites()[0])/2 - 1 ;
	  systemDotEnd = systemDotStart - systemDotSize;
	}
      systemDot = SpinBlock(systemDotStart, systemDotEnd, true);

      SpinBlock newSystem; // new system after blocking and decimating
      newSystem.initialise_op_array(OVERLAP, false);
      newSystem.setstoragetype(DISTRIBUTED_STORAGE);
      newSystem.BuildSumBlock (NO_PARTICLE_SPIN_NUMBER_CONSTRAINT, system, systemDot);

      std::vector<Matrix> brarotateMatrix, ketrotateMatrix;
      LoadRotationMatrix(newSystem.get_sites(), brarotateMatrix, stateA);
      LoadRotationMatrix(newSystem.get_sites(), ketrotateMatrix, stateB);
      newSystem.transform_operators(brarotateMatrix, ketrotateMatrix);

      
      system = newSystem;
      if (dmrginp.outputlevel() > 0){
	    pout << system<<endl;
      }
      
      SpinBlock::store (forward, system.get_sites(), system, stateA, stateB);	 	
      ++sweepParams.set_block_iter();
      
      sweepParams.savestate(forward, syssites.size());
      if (dmrginp.outputlevel() > 0)
         mcheck("at the end of sweep iteration");
    }

  pout << "\t\t\t ============================================================================ " << endl;

  // update the static number of iterations
  return ;
  
}

void SpinAdapted::Sweep::fullci(double sweep_tol)
{
  int integralIndex = 0;
  SweepParams sweepParams;
  sweepParams.set_sweep_parameters();


  StackSpinBlock system, sysdot;
  InitBlocks::InitStartingBlock(system, true, 0, 0, sweepParams.get_forward_starting_size(),  sweepParams.get_backward_starting_size(), 0, false, true, integralIndex);
  int numsites = dmrginp.spinAdapted() ? dmrginp.last_site() : dmrginp.last_site()/2;
  int forwardsites = numsites/2+numsites%2;
  int backwardsites = numsites - forwardsites;
  SpinQuantum hq(0,SpinSpace(0),IrrepSpace(0));


  StackSpinBlock newSystem;
  for (int i=0; i<forwardsites-1; i++) {
    sysdot = StackSpinBlock(i+1, i+1, integralIndex, true);
    system.addAdditionalOps();
    newSystem.set_integralIndex() = integralIndex;
    if (i == forwardsites-2)
      newSystem.default_op_components(true, true, false, true);
    else
      newSystem.default_op_components(false, true, false, true);

    newSystem.setstoragetype(DISTRIBUTED_STORAGE);
    newSystem.BuildSumBlock (NO_PARTICLE_SPIN_NUMBER_CONSTRAINT, system, sysdot);

    long memoryToFree = newSystem.getdata() - system.getdata();
    long newsysMemory = newSystem.memoryUsed();
    if (i != forwardsites-2) {
      if (i != 0) {
	newSystem.moveToNewMemory(system.getdata());
	Stackmem[0].deallocate(newSystem.getdata()+newSystem.memoryUsed(), memoryToFree);
      }
      system.clear();
      system = newSystem;
    }
  }

  StackSpinBlock environment, newEnvironment, envdot;
  InitBlocks::InitStartingBlock(environment, false, 0, 0, sweepParams.get_forward_starting_size(),  sweepParams.get_backward_starting_size(), 0, false, true, integralIndex);
  for (int i=0;i <backwardsites-1; i++) {
    envdot = StackSpinBlock(numsites-2-i, numsites-2-i, integralIndex, true);
    environment.addAdditionalOps();
    newEnvironment.set_integralIndex() = integralIndex;
    if (i == backwardsites-2)
      newEnvironment.default_op_components(true, false, true, true);
    else
      newEnvironment.default_op_components(false, false, true, true);
    newEnvironment.setstoragetype(DISTRIBUTED_STORAGE);
    newEnvironment.BuildSumBlock (NO_PARTICLE_SPIN_NUMBER_CONSTRAINT, environment, envdot);

    if (i!=backwardsites-2) {
      if (i != 0) {
	long memoryToFree = newEnvironment.getdata() - environment.getdata();
	long newenvMemory = newEnvironment.memoryUsed();
	newEnvironment.moveToNewMemory(environment.getdata());
	Stackmem[0].deallocate(newEnvironment.getdata()+newEnvironment.memoryUsed(), memoryToFree);
      }
      environment.clear();
      environment = newEnvironment;
    }
  }

  pout <<"\t\t\t System Block :: "<< newSystem;
  pout <<"\t\t\t Environment Block :: "<< newEnvironment;
  newSystem.set_loopblock(true); newEnvironment.set_loopblock(false);
  StackSpinBlock big;
  InitBlocks::InitBigBlock(newSystem, newEnvironment, big); 


  int nroots = dmrginp.nroots(0);
  std::vector<StackWavefunction> solution(nroots);

  solution[0].initialise(dmrginp.effective_molecule_quantum_vec(), big.get_leftBlock()->get_stateInfo(), big.get_rightBlock()->get_stateInfo(), false);
  solution[0].Clear();
  if (mpigetrank() == 0) {
    for (int i=1; i<nroots; i++) {
      solution[i].initialise(dmrginp.effective_molecule_quantum_vec(), big.get_leftBlock()->get_stateInfo(), big.get_rightBlock()->get_stateInfo(), false);
      solution[i].Clear();
    }
  }


  std::vector<double> energies(nroots);
  double tol = sweepParams.get_davidson_tol();

  pout << "\t\t\t Solving the Wavefunction "<<endl;
  int currentState = 0;
  std::vector<StackWavefunction> lowerStates;
  Solver::solve_wavefunction(solution, energies, big, tol, BASIC, false, true, false, false, sweepParams.get_additional_noise(), currentState, lowerStates);

  pout << "tensormultiply "<<*dmrginp.tensormultiply<<endl;

  for (int i=0; i<nroots; i++) {
    pout << "fullci energy "<< energies[i]<<endl;
  }
  if (!mpigetrank())
  {
//.........这里部分代码省略.........

void SpinAdapted::mps_nevpt::type1::subspace_Va(int baseState)
{
  
  double energy=0;
  double overlap=0;
  VaPerturber pb;
  MPS::siteBlocks.clear();
  int virtsize = dmrginp.spinAdapted()? dmrginp.virt_size():dmrginp.virt_size()*2;
  int virtshift = dmrginp.spinAdapted()? dmrginp.core_size()+dmrginp.act_size(): (dmrginp.core_size()+dmrginp.act_size())*2;
  //int virtsize = dmrginp.virt_size();
  //int virtshift = dmrginp.core_size()+dmrginp.act_size();
  for(int i=0; i< virtsize; i++){
    double perturberEnergy=0;
    dmrginp.calc_type() = MPS_NEVPT;
    pb.init(i+virtshift);
    pout << "Begin Va subspace with a = " << pb.orb(0)<<endl;
    SweepParams sweepParams;
    sweepParams.set_sweep_parameters();
    sweepParams.current_root() = baseState;
    //sweepParams.current_root() = -1;
    //double last_fe = Startup(sweepParams, true, true, false, 0, pb, baseState);
    Timer timer;
    Startup(sweepParams, true, pb, baseState);
    pout <<"Start up time :" << timer.elapsedwalltime();
    //sweepParams.current_root() = baseState;
    timer.start();
    while(true)
    {
      do_one(sweepParams, false, false, false, 0, pb, baseState);
      if(dmrginp.max_iter() <= sweepParams.get_sweep_iter())
	      break;
      do_one(sweepParams, false, true, false, 0, pb, baseState);
      if(dmrginp.max_iter() <= sweepParams.get_sweep_iter())
      {
        cleanup(baseState, pb);
	      break;
      }
    }
    pout <<"Sweep time :" << timer.elapsedwalltime();
//    while ( true)
//      {
//        old_fe = last_fe;
//        old_be = last_be;
//        if(dmrginp.max_iter() <= sweepParams.get_sweep_iter())
//	        break;
//        last_be = do_one(sweepParams, false, false, false, 0, pb, baseState);
//        if (dmrginp.outputlevel() > 0) 
//	        pout << "Finished Sweep Iteration "<<sweepParams.get_sweep_iter()<<endl;
//        
//        if(dmrginp.max_iter() <= sweepParams.get_sweep_iter())
//	        break;
//        
//        last_fe = do_one(sweepParams, false, true, false, 0, pb, baseState);
//        
//        if (dmrginp.outputlevel() > 0)
//	        pout << "Finished Sweep Iteration "<<sweepParams.get_sweep_iter()<<endl;
//        
//      }
//

 //   if (mpigetrank()==0) {
 //     bool direction = true;
 //     Sweep::InitializeStateInfo(sweepParams, !direction, pb.wavenumber(),pb.braquanta );
 //     Sweep::InitializeStateInfo(sweepParams, direction, pb.wavenumber(),pb.braquanta );
 //     Sweep::CanonicalizeWavefunction(sweepParams, !direction, pb.wavenumber(),pb.braquanta );
 //     Sweep::CanonicalizeWavefunction(sweepParams, direction, pb.wavenumber(),pb.braquanta );
 //     Sweep::CanonicalizeWavefunction(sweepParams, !direction, pb.wavenumber(),pb.braquanta );
 //     Sweep::InitializeStateInfo(sweepParams, !direction, pb.wavenumber(),pb.braquanta );
 //     Sweep::InitializeStateInfo(sweepParams, direction, pb.wavenumber(),pb.braquanta );
 //     
 //   }
   
    MPS pbmps(pb.wavenumber());
    double o, h;
    dmrginp.calc_type() = DMRG;

    timer.start();

    calcHamiltonianAndOverlap(pbmps, h, o,pb);

    pout <<"Calculate Expectation time :" << timer.elapsedwalltime();

    if(!dmrginp.spinAdapted())
    {
      //In nonspinAdapted, alpha and beta have the results. Only one is neccessary. 
      o*=2;
      h*=2;
      i++;
    }
    if(o> NUMERICAL_ZERO){
      double fock =dmrginp.spinAdapted()? v_1[0](2*(i+virtshift),2*(i+virtshift)): v_1[0](i+virtshift,i+virtshift);
      //perturberEnergy = h/o+fock+perturber::CoreEnergy[0];
      perturberEnergy = h/o+fock;
      energy += o/(mps_nevpt::ZeroEnergy[baseState]- perturberEnergy) ;
      //overlap +=o;
      overlap += sqrt(o)/(mps_nevpt::ZeroEnergy[baseState]- perturberEnergy);
      if (dmrginp.outputlevel() > 0){
        pout << "Amplitude : " << sqrt(o)/(mps_nevpt::ZeroEnergy[baseState]- perturberEnergy) <<endl;
        pout << "Ener(only CAS part) : " << h/o<<endl;
        pout << "Energy : " << perturberEnergy<<endl;
//.........这里部分代码省略.........

double SpinAdapted::mps_nevpt::type1::do_one(SweepParams &sweepParams, const bool &warmUp, const bool &forward, const bool &restart, const int &restartSize, perturber& pb, int baseState)
{
  int integralIndex = 0;
  SpinBlock system;
  system.nonactive_orb() = pb.orb();
  const int nroots = dmrginp.nroots(sweepParams.get_sweep_iter());

  std::vector<double> finalEnergy(nroots,-1.0e10);
  std::vector<double> finalEnergy_spins(nroots,0.);
  double finalError = 0.;

  sweepParams.set_sweep_parameters();
  // a new renormalisation sweep routine
  if (forward)
    if (dmrginp.outputlevel() > 0)
      pout << "\t\t\t Starting sweep "<< sweepParams.set_sweep_iter()<<" in forwards direction"<<endl;
  else
    if (dmrginp.outputlevel() > 0)
    {
      pout << "\t\t\t Starting sweep "<< sweepParams.set_sweep_iter()<<" in backwards direction" << endl;
      pout << "\t\t\t ============================================================================ " << endl;
    }

  InitBlocks::InitStartingBlock (system,forward, baseState, pb.wavenumber(), sweepParams.get_forward_starting_size(), sweepParams.get_backward_starting_size(), restartSize, restart, warmUp, integralIndex, pb.braquanta, pb.ketquanta);
  if(!restart)
    sweepParams.set_block_iter() = 0;

 
  if (dmrginp.outputlevel() > 0)
    pout << "\t\t\t Starting block is :: " << endl << system << endl;

  SpinBlock::store (forward, system.get_sites(), system, pb.wavenumber(), baseState); // if restart, just restoring an existing block --
  sweepParams.savestate(forward, system.get_sites().size());
  bool dot_with_sys = true;
  vector<int> syssites = system.get_sites();

  if (restart)
  {
    if (forward && system.get_complementary_sites()[0] >= dmrginp.last_site()/2)
      dot_with_sys = false;
    if (!forward && system.get_sites()[0]-1 < dmrginp.last_site()/2)
      dot_with_sys = false;
  }
  if (dmrginp.outputlevel() > 0)
    mcheck("at the very start of sweep");  // just timer

  for (; sweepParams.get_block_iter() < sweepParams.get_n_iters(); ) // get_n_iters() returns the number of blocking iterations needed in one sweep
    {
      if (dmrginp.outputlevel() > 0)
      {
        pout << "\t\t\t Block Iteration :: " << sweepParams.get_block_iter() << endl;
        pout << "\t\t\t ----------------------------" << endl;
      }
      if (dmrginp.outputlevel() > 0) {
	    if (forward)
      {
	      pout << "\t\t\t Current direction is :: Forwards " << endl;
      }
	    else
      {
	      pout << "\t\t\t Current direction is :: Backwards " << endl;
      }
      }

      if (sweepParams.get_block_iter() != 0) 
	sweepParams.set_guesstype() = TRANSFORM;
      else
        sweepParams.set_guesstype() = TRANSPOSE;


      
      if (dmrginp.outputlevel() > 0)
         pout << "\t\t\t Blocking and Decimating " << endl;
	  
      SpinBlock newSystem; // new system after blocking and decimating
      newSystem.nonactive_orb() = pb.orb();

      //Need to substitute by:
     // if (warmUp )
     //   Startup(sweepParams, system, newSystem, dot_with_sys, pb.wavenumber(), baseState);
     // else {
     //   BlockDecimateAndCompress (sweepParams, system, newSystem, false, dot_with_sys, pb.wavenumber(), baseState);
     // }
      
        BlockDecimateAndCompress (sweepParams, system, newSystem, warmUp, dot_with_sys,pb, baseState);
      //Need to substitute by?


      system = newSystem;
      if (dmrginp.outputlevel() > 0){
	    pout << system<<endl;
	    pout << system.get_braStateInfo()<<endl;
	    system.printOperatorSummary();
      }
      
      //system size is going to be less than environment size
      if (forward && system.get_complementary_sites()[0] >= dmrginp.last_site()/2)
	    dot_with_sys = false;
      if (!forward && system.get_sites()[0]-1 < dmrginp.last_site()/2)
	    dot_with_sys = false;
//.........这里部分代码省略.........

void SweepGenblock::do_one(SweepParams &sweepParams, const bool &forward, int stateA, int stateB)
{
  Timer sweeptimer;
  int integralIndex = 0;
  SpinBlock system;

  sweepParams.set_sweep_parameters();
  // a new renormalisation sweep routine
  pout << ((forward) ? "\t\t\t Starting renormalisation sweep in forwards direction" : "\t\t\t Starting renormalisation sweep in backwards direction") << endl;
  pout << "\t\t\t ============================================================================ " << endl;
  
  InitBlocks::InitStartingBlock (system,forward, stateA, stateB, sweepParams.get_forward_starting_size(), sweepParams.get_backward_starting_size(), 0, false, false, integralIndex);

  sweepParams.set_block_iter() = 0;

  p2out << "\t\t\t Starting block is :: " << endl << system << endl;

  bool dot_with_sys = true;

  for (; sweepParams.get_block_iter() < sweepParams.get_n_iters(); )
    {
      pout << "\n\t\t\t Block Iteration :: " << sweepParams.get_block_iter() << endl;
      pout << "\t\t\t ----------------------------" << endl;
      if (forward)
	{ p1out << "\t\t\t Current direction is :: Forwards " << endl; }
      else
	{ p1out << "\t\t\t Current direction is :: Backwards " << endl; }

  
      if (dmrginp.no_transform())
	      sweepParams.set_guesstype() = BASIC;
      else if ( sweepParams.get_block_iter() != 0) 
  	    sweepParams.set_guesstype() = TRANSFORM;
      else if ( sweepParams.get_block_iter() == 0 )
        sweepParams.set_guesstype() = TRANSPOSE;
      else
        sweepParams.set_guesstype() = BASIC;
      
      p1out << "\t\t\t Blocking and Decimating " << endl;
	  
      SpinBlock newSystem;

      BlockAndDecimate (sweepParams, system, newSystem, false, dot_with_sys, stateA, stateB);

      system = newSystem;

      SpinBlock::store(forward, system.get_sites(), system, stateA, stateB);

      //system size is going to be less than environment size
      if (forward && system.get_complementary_sites()[0] >= dmrginp.last_site()/2)
	dot_with_sys = false;
      if (!forward && system.get_sites()[0]-1 < dmrginp.last_site()/2)
	dot_with_sys = false;

      ++sweepParams.set_block_iter();
    }
  pout << "\t\t\t Finished Generate-Blocks Sweep. " << endl;
  pout << "\t\t\t ============================================================================ " << endl;

  // update the static number of iterations

  ++sweepParams.set_sweep_iter();

  ecpu = sweeptimer.elapsedcputime(); ewall = sweeptimer.elapsedwalltime();
  pout << "\t\t\t Elapsed Sweep CPU  Time (seconds): " << setprecision(3) << ecpu << endl;
  pout << "\t\t\t Elapsed Sweep Wall Time (seconds): " << setprecision(3) << ewall << endl;

}