Precond_local.cpp

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#include <Precond_local.h>
#include <Matrice_Bloc_Sym.h>
 
Implemente_instanciable(Precond_local,"Precond_local",Precond_base);
 
// printOn et readOn
Sortie& Precond_local::printOn(Sortie& s ) const
{
  return s << le_precond_local_.que_suis_je() << finl;
}
 
Entree& Precond_local::readOn(Entree& is )
{
  is >> le_precond_local_;
  // Pour eviter trop d'affichage (Convergence)
  if (!le_precond_local_->limpr())
    le_precond_local_->fixer_limpr(-1);
  return is;
}
 
void Precond_local::prepare_(const Matrice_Base& la_matrice, const DoubleVect& secmem)
{
  le_precond_local_->reinit();
 
  if(sub_type(Matrice_Bloc_Sym,la_matrice))
    {
      const Matrice_Bloc_Sym& m = ref_cast(Matrice_Bloc_Sym, la_matrice);
      m.BlocSymToMatMorseSym(matrice_de_travail_);
      // La matrice est t'elle definie ? On regarde son bloc(0,0)
      const Matrice_Bloc&       bloc     = ref_cast(Matrice_Bloc, m.get_bloc(0,0).valeur());
      const Matrice_Morse_Sym& sous_bloc= ref_cast(Matrice_Morse_Sym, bloc.get_bloc(0,0).valeur());
      int ok = sous_bloc.get_est_definie();
      matrice_de_travail_.set_est_definie(ok);
      matrice_a_resoudre_ = matrice_de_travail_;
    }
  else if (sub_type(Matrice_Bloc,la_matrice))
    {
      const Matrice_Bloc& matrice = ref_cast(Matrice_Bloc,la_matrice);
      const Matrice&      MB00 = matrice.get_bloc(0,0);
      if(!sub_type(Matrice_Morse_Sym,MB00.valeur()))
        {
          Cerr<<"Precond_local::prepare_ MB00 is not of type deriving from matrice_morse_sym "
              <<MB00->que_suis_je()<<finl;
          exit();
        }
      matrice_a_resoudre_ = MB00.valeur();
    }
  else if (sub_type(Matrice_Morse_Sym,la_matrice))
    {
      matrice_a_resoudre_ = la_matrice;
    }
  else
    {
      Cerr<<"In Precond_local: prepare_, the type of the matrix " << la_matrice.que_suis_je() << finl;
      Cerr<<"is not yet supported." << finl;
      exit();
    }
  Precond_base::prepare_(la_matrice, secmem);
}
 
int Precond_local::preconditionner_(const Matrice_Base& la_matrice,
                                    const DoubleVect& secmem,
                                    DoubleVect& solution)
{
  const Matrice_Base& m = matrice_a_resoudre_.valeur();
  int ok = precond(m, secmem, solution);
  return ok;
}
 
int Precond_local::precond(const Matrice_Base& mat,
                           const DoubleVect& secmem,
                           DoubleVect& solution)
{
  if(Process::is_parallel())
    {
      Cerr << "Precond_local::precond not coded for nproc > 1" << finl;
      exit();
#if 0
      VECT(Descripteur)& desc = solution.structure().descripteur();
      int nb_struct = desc.size();
      if(nb_struct==1)
        res_syst_loc_simple(mat,secmem,solution,champ);
      else if (nb_struct==2)
        res_syst_loc_hybride(mat,secmem,solution,champ);
      else
        {
          Cerr << "Cases still not supported in Precond_local::preconditionner." << finl;
          // PL: Il suffit de generaliser res_syst_loc_hybride comme dans NP une
          // taille nb_struct quelconque...pour supporter P0+P1+Pa (pas le temps de le faire).
          exit();
        }
#endif
      return 0;
    }
  else
    return le_precond_local_.resoudre_systeme(mat,secmem,solution);
}
 
void Precond_local::res_syst_loc_simple(const Matrice_Morse_Sym& mat,
                                        const DoubleVect& secmem,
                                        DoubleVect& solution,
                                        const Champ_Inc_base& champ)
{
  exit();
#if 0
  if(a_remplir_)
    {
      a_remplir_=0;
      int n_reel = secmem.size();
      la_matrice_locale_.dimensionner(n_reel,0);
      int ii,jj;
      int cpt=0;
      const IntVect& tab1_tot = mat.tab1_;
      const IntVect& tab2_tot = mat.tab2_;
      const DoubleVect& coeff_tot = mat.coeff_;
      IntVect& tab1_reel = la_matrice_locale_.tab1_;
      IntVect& tab2_reel = la_matrice_locale_.tab2_;
      DoubleVect& coeff_reel = la_matrice_locale_.coeff_;
      tab1_reel(0)=1;
      for(ii=0; ii<n_reel; ii++)
        {
          int dl = tab1_tot(ii);
          int fl = tab1_tot(ii+1);
          for(jj=dl; jj<fl; jj++)
            {
              if(tab2_tot(jj-1)<=n_reel)
                cpt++;
            }
          tab1_reel(ii+1)=cpt+1;
        }
      la_matrice_locale_.dimensionner(n_reel,tab1_reel(n_reel)-1);
      cpt=0;
      for(ii=0; ii<n_reel; ii++)
        {
          int dl = tab1_tot(ii);
          int fl = tab1_tot(ii+1);
          for(jj=dl; jj<fl; jj++)
            {
              if(tab2_tot(jj-1)<=n_reel)
                {
                  tab2_reel(cpt)=tab2_tot(jj-1);
                  coeff_reel(cpt++)=coeff_tot(jj-1);
                }
            }
        }
      la_matrice_locale_.set_est_definie(mat.get_est_definie());
    }
  le_precond_local_.resoudre_systeme(la_matrice_locale_,
                                     secmem,solution,champ);
#endif
}
 
void Precond_local::res_syst_loc_hybride(const Matrice_Morse_Sym& mat,
                                         const DoubleVect& secmem,
                                         DoubleVect& solution,
                                         const Champ_Inc_base& champ)
{
  exit();
#if 0
  if(a_remplir_)
    {
      a_remplir_=0;
      {
        const Domaine_dis_base& zdisb = champ.domaine_dis_base();
        const Domaine& domaine = zdisb.domaine();
        int nb_som = domaine.nb_som();
        int nb_elem = domaine.nb_elem();
        int nb_elem_tot = domaine.nb_elem_tot();
 
        la_matrice_locale_.dimensionner(nb_elem+nb_som,0);
        int ii,jj;
        int cpt=0;
        const IntVect& tab1_tot = mat.tab1_;
        const IntVect& tab2_tot = mat.tab2_;
        const DoubleVect& coeff_tot = mat.coeff_;
        IntVect& tab1_reel = la_matrice_locale_.tab1_;
        IntVect& tab2_reel = la_matrice_locale_.tab2_;
        DoubleVect& coeff_reel = la_matrice_locale_.coeff_;
        tab1_reel(0)=1;
        for(ii=0; ii<nb_elem; ii++)
          {
            int dl = tab1_tot(ii);
            int fl = tab1_tot(ii+1);
            for(jj=dl; jj<fl; jj++)
              {
                int i_col = tab2_tot(jj-1);
                if( (i_col<=nb_elem) ||
                    ((i_col>=nb_elem_tot+1) && (i_col<=(nb_elem_tot+nb_som))) )
                  cpt++;
              }
            tab1_reel(ii+1)=cpt+1;
          }
        for(ii=nb_elem_tot; ii<(nb_elem_tot+nb_som); ii++)
          {
            int dl = tab1_tot(ii);
            int fl = tab1_tot(ii+1);
            for(jj=dl; jj<fl; jj++)
              {
                if(tab2_tot(jj-1)<=(nb_elem_tot+nb_som))
                  cpt++;
              }
            tab1_reel((ii-nb_elem_tot)+nb_elem+1)=cpt+1;
          }
        la_matrice_locale_.dimensionner(nb_elem+nb_som,tab1_reel(nb_elem+nb_som)-1);
        cpt=0;
        for(ii=0; ii<nb_elem; ii++)
          {
            int dl = tab1_tot(ii);
            int fl = tab1_tot(ii+1);
            for(jj=dl; jj<fl; jj++)
              {
                int i_col = tab2_tot(jj-1);
                if(i_col<=nb_elem)
                  {
                    tab2_reel(cpt)=tab2_tot(jj-1);
                    coeff_reel(cpt++)=coeff_tot(jj-1);
                  }
                if( (i_col>=nb_elem_tot+1) &&
                    (i_col<=(nb_elem_tot+nb_som)) )
                  {
                    tab2_reel(cpt)=tab2_tot(jj-1)-nb_elem_tot+nb_elem;
                    coeff_reel(cpt++)=coeff_tot(jj-1);
                  }
              }
          }
        for(ii=nb_elem_tot; ii<(nb_elem_tot+nb_som); ii++)
          {
            int dl = tab1_tot(ii);
            int fl = tab1_tot(ii+1);
            for(jj=dl; jj<fl; jj++)
              {
                if(tab2_tot(jj-1)<=(nb_elem_tot+nb_som))
                  {
                    tab2_reel(cpt)=tab2_tot(jj-1)-nb_elem_tot+nb_elem;
                    coeff_reel(cpt++)=coeff_tot(jj-1);
                  }
              }
          }
        la_matrice_locale_.set_est_definie(mat.get_est_definie());
        {
          int i,j,k,l;
 
          const ArrOfInt& items_tot = solution.get_items_communs_tot();
          for(i=0; i<items_tot.size_array(); i++)
            {
              k = items_tot[i]-nb_elem_tot+nb_elem;
              for(j=tab1_reel[k]+1; j<tab1_reel[k+1]; j++)
                {
                  coeff_reel(j-1) = 0. ;
                }
              // On parcourt les lignes au-dessus pour annuler la colonne k
              for(j=0; j<k; j++)
                {
                  for(l=tab1_reel[j]+1; l<tab1_reel[j+1]; l++)
                    {
                      if((tab2_reel[l-1]-1)==k)
                        {
                          coeff_reel(l-1) = 0. ;
                        }
                    }
                }
            }
        }
      }
    }
  VECT(Descripteur)& desc = solution.structure().descripteur();
  int nb_struct = desc.size();
  int ind_struct;
  int taille=0;
  for(ind_struct=0; ind_struct<nb_struct; ind_struct++)
    {
      Descripteur& desci=desc[ind_struct];
      taille+=desci.nb();
    }
  DoubleTab sol_loc(taille);
  DoubleTab sec_loc(taille);
  int cpt=0;
  for(ind_struct=0; ind_struct<nb_struct; ind_struct++)
    {
      Descripteur& desci=desc[ind_struct];
      int i;
      int deb=desci.deb();
      int fin=deb+desci.nb();
      for(i=deb; i<fin; i++)
        {
          sol_loc[cpt] = solution[i];
          sec_loc[cpt] = secmem[i];
          cpt++;
        }
    }
  le_precond_local_.resoudre_systeme(la_matrice_locale_,
                                     sec_loc,sol_loc,champ);
  cpt=0;
  for(ind_struct=0; ind_struct<nb_struct; ind_struct++)
    {
      Descripteur& desci=desc[ind_struct];
      int i;
      int deb=desci.deb();
      int fin=deb+desci.nb();
      for(i=deb; i<fin; i++)
        solution[i]=sol_loc[cpt++];
    }
  solution.echange_espace_virtuel();
#endif
}