Champ_Fonc_Tabule_P0_VEF.cpp

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#include <Champ_Fonc_Tabule_P0_VEF.h>
#include <TRUSTTrav.h>
#include <Domaine_VF.h>
#include <Table.h>
#include <ParserView.h>
 
Implemente_instanciable(Champ_Fonc_Tabule_P0_VEF, "Champ_Fonc_Tabule_P0_VEF", Champ_Fonc_P0_VEF);
 
Sortie& Champ_Fonc_Tabule_P0_VEF::printOn(Sortie& s) const { return s << que_suis_je() << " " << le_nom(); }
 
Entree& Champ_Fonc_Tabule_P0_VEF::readOn(Entree& s) { return s; }
 
void Champ_Fonc_Tabule_P0_VEF::associer_param(const VECT(OBS_PTR(Champ_base)) &les_champs, const Table& une_table)
{
  les_ch_param = les_champs;
  la_table = une_table;
}
 
void Champ_Fonc_Tabule_P0_VEF::mettre_a_jour(double t)
{
  const Domaine_VF& domaine_VF = le_dom_VF.valeur();
  const Table& table = la_table.valeur();
  DoubleTab& mes_valeurs = valeurs();
  const int nb_elem = domaine_VF.nb_elem(), nb_elem_tot = domaine_VF.nb_elem_tot(), nb_param = les_ch_param.size();
  const int nbcomp = mes_valeurs.dimension(1);
  const DoubleTab& centres_de_gravites = domaine_VF.xp();
 
  // ToDo Kokkos: factorize somewhere this array or rewrite valeur_aux_elems !
  IntTrav les_polys(nb_elem_tot);
  IntArrView les_polys_v = static_cast<IntVect&>(les_polys).view_wo();
  Kokkos::parallel_for(start_gpu_timer(__KERNEL_NAME__), nb_elem_tot, KOKKOS_LAMBDA(const int num_elem)
  {
    les_polys_v(num_elem) = num_elem;
  });
  end_gpu_timer(__KERNEL_NAME__);
 
  if (nb_param==1 && nbcomp==1 && table.isfonction()==1)
    {
      // Ported on GPU. ToDo Kokkos, extend to more than one param or more than one nbcomp
      DoubleTrav val_param_aux_elems(nb_elem_tot, nbcomp);
      les_ch_param[0]->valeur_aux_elems(centres_de_gravites, les_polys, val_param_aux_elems);
      // Cree un parser specifique ParserView pour Kokkos:
      ParserView parser(table.parser(0));
      parser.parseString();
      CDoubleTabView val_params_aux_elems_v = val_param_aux_elems.view_ro();
      DoubleTabView mes_valeurs_v = mes_valeurs.view_wo();
      Kokkos::parallel_for(start_gpu_timer(__KERNEL_NAME__), nb_elem, KOKKOS_LAMBDA(
                             const int num_elem)
      {
        int threadId = parser.acquire();
        for (int ncomp = 0; ncomp < nbcomp; ncomp++)
          {
            double val = val_params_aux_elems_v(num_elem, ncomp);
 
            parser.setVar(0, val, threadId);
            mes_valeurs_v(num_elem, ncomp) = parser.eval(threadId);
          }
        parser.release(threadId);
      });
      end_gpu_timer(__KERNEL_NAME__);
    }
  else
    {
      ToDo_Kokkos("critical");
      DoubleTabs val_params_aux_elems;
      for (int i = 0; i < nb_param; i++)
        {
          DoubleTab vp(nb_elem_tot, mes_valeurs.dimension(1));
          val_params_aux_elems.add(vp);
        }
      for (int i = 0; i < nb_param; i++)
        les_ch_param[i]->valeur_aux_elems(centres_de_gravites, les_polys, val_params_aux_elems[i]);
 
      if (table.isfonction() != 2)
        {
          std::vector<double> vals;
          vals.reserve(nb_param); // Pre-allocate space once
          for (int num_elem = 0; num_elem < nb_elem; num_elem++)
            for (int ncomp = 0; ncomp < nbcomp; ncomp++)
              {
                vals.clear();
                for (int n = 0; n < nb_param; n++)
                  vals.push_back(val_params_aux_elems[n](num_elem, ncomp));
                mes_valeurs(num_elem, ncomp) = table.val(vals, ncomp);
              }
        }
      else
        {
          table.valeurs(val_params_aux_elems[0], centres_de_gravites, t, mes_valeurs);
        }
    }
  Champ_Fonc_base::mettre_a_jour(t);
}
 
int Champ_Fonc_Tabule_P0_VEF::initialiser(const double un_temps)
{
  Champ_Fonc_Tabule_P0_VEF::mettre_a_jour(un_temps);
  return 1;
}