Solv_tools.cpp

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#include <Solv_tools.h>
#include <Objet_U.h>
 
void Solv_tools::construit_renum(const DoubleVect& b)
{
  // Initialize the items_to_keep_ array if not already done
  nb_items_to_keep_ = b.get_md_vector()->get_sequential_items_flags(items_to_keep_, b.line_size());
 
  // Compute important value:
  secmem_sz_ = b.size_totale();
  nb_rows_ = nb_items_to_keep_;
  nb_rows_tot_ = Process::mp_sum(nb_rows_);
  decalage_local_global_ = Process::mppartial_sum(nb_rows_);
  //Journal()<<"nb_rows_=" << nb_rows_ << " nb_rows_tot_=" << nb_rows_tot_ << " decalage_local_global_=" << decalage_local_global_ << finl;
 
  /**********************/
  /* Build renum_ array */
  /**********************/
  //if (MatricePetsc_==nullptr)
  {
    const MD_Vector& md = b.get_md_vector();
    renum_.reset();
    renum_.resize(0, b.line_size());
    MD_Vector_tools::creer_tableau_distribue(md, renum_, RESIZE_OPTIONS::NOCOPY_NOINIT);
  }
  int cpt=0;
  int size=items_to_keep_.size_array();
  renum_ = INT_MAX; //to crash if the MD_Vector is inconsistent
  ArrOfTID& renum_array = renum_;  // array viewed as linear
  for(int i=0; i<size; i++)
    if(items_to_keep_[i])
      {
        renum_array[i]=cpt+decalage_local_global_;
        cpt++;
      }
 
  renum_.echange_espace_virtuel();
  // Build index_
  index_.resize(size);
  int index = 0;
  // ToDo OpenMP: factorize with ix since index_=ix-decalage_local_global_
  for (int i=0; i<size; i++)
    {
      if (items_to_keep_[i])
        {
          index_[i] = index;
          index++;
        }
      else
        index_[i] = -1;
    }
  // Build ix
  size=b.size_array();
  auto colonne_globale=decalage_local_global_;
  ix.resize(size);
  for (int i=0; i<size; i++)
    if (items_to_keep_[i])
      {
        ix[i] = colonne_globale;
        colonne_globale++;
      }
    else
      ix[i] = -1;
}