namespace ParaMEDMEM
{
-
- //!converts a pair <subdomainid,local> to a global number
- std::pair<int,int> BlockTopology::globalToLocal(const int global) const
- {
- int subdomain_id=0;
- int position=global;
- int size=_nb_elems;
- int size_procs=_proc_group->size();
- int increment=size;
- vector<int>axis_position(_dimension);
- vector<int>axis_offset(_dimension);
- for (int idim=0; idim<_dimension; idim++)
- {
- int axis_size=_local_array_indices[idim].size()-1;
- int axis_nb_elem=_local_array_indices[idim][axis_size];
- increment=increment/axis_nb_elem;
- int proc_increment = size_procs/(axis_size);
- int axis_pos=position/increment;
- position=position%increment;
- int iaxis=1;
- while (_local_array_indices[idim][iaxis]<=axis_pos)
- {
- subdomain_id+=proc_increment;
- iaxis++;
- }
- axis_position[idim]=axis_pos-_local_array_indices[idim][iaxis-1];
- axis_offset[idim]=iaxis;
- }
- int local=0;
- int local_increment=1;
- for (int idim=_dimension-1; idim>=0; idim--)
- {
- local+=axis_position[idim]*local_increment;
- local_increment*=_local_array_indices[idim][axis_offset[idim]]-_local_array_indices[idim][axis_offset[idim]-1];
- }
- return make_pair(subdomain_id,local);
- }
-
- //!converts local number to a global number
- int BlockTopology::localToGlobal(const pair<int,int> local) const
- {
-
- int subdomain_id=local.first;
- int global=0;
- int loc=local.second;
- int increment=_nb_elems;
- int proc_increment=_proc_group->size();
- int local_increment=getNbLocalElements();
- for (int idim=0; idim < _dimension; idim++)
- {
- int axis_size=_local_array_indices[idim].size()-1;
- int axis_nb_elem=_local_array_indices[idim][axis_size];
- increment=axis_nb_elem==0?0:increment/axis_nb_elem;
- proc_increment = proc_increment/(axis_size);
- int proc_axis=subdomain_id/proc_increment;
- subdomain_id=subdomain_id%proc_increment;
- int local_axis_nb_elem=_local_array_indices[idim][proc_axis+1]-_local_array_indices[idim][proc_axis];
- local_increment = (local_axis_nb_elem==0)?0:(local_increment/local_axis_nb_elem);
- int iaxis=((local_increment==0)?0:(loc/local_increment))+_local_array_indices[idim][proc_axis];
- global+=increment*iaxis;
- loc = (local_increment==0)?0:(loc%local_increment);
- }
- return global;
- }
-
- //Retrieves the local number of elements
- int BlockTopology::getNbLocalElements()const
- {
- int position=_proc_group->myRank();
- int nb_elem = 1;
- int increment=1;
- for (int i=_dimension-1; i>=0; i--)
- {
- increment *=_nb_procs_per_dim[i];
- int idim=position%increment;
- position=position/increment;
- int imin=_local_array_indices[i][idim];
- int imax=_local_array_indices[i][idim+1];
- nb_elem*=(imax-imin);
- }
- return nb_elem;
- }
+ /*!
+ * Default ctor.
+ */
+ BlockTopology::BlockTopology() :
+ _dimension(0), _nb_procs_per_dim(0),
+ _local_array_indices(0), _cycle_type(0),
+ _proc_group(NULL),_nb_elems(0),
+ _owns_processor_group(false)
+ {}
/*!
* Constructor of a block topology from a grid.
delete _proc_group;
}
+ //!converts a pair <subdomainid,local> to a global number
+ std::pair<int,int> BlockTopology::globalToLocal(const int global) const
+ {
+ int subdomain_id=0;
+ int position=global;
+ int size=_nb_elems;
+ int size_procs=_proc_group->size();
+ int increment=size;
+ vector<int>axis_position(_dimension);
+ vector<int>axis_offset(_dimension);
+ for (int idim=0; idim<_dimension; idim++)
+ {
+ int axis_size=_local_array_indices[idim].size()-1;
+ int axis_nb_elem=_local_array_indices[idim][axis_size];
+ increment=increment/axis_nb_elem;
+ int proc_increment = size_procs/(axis_size);
+ int axis_pos=position/increment;
+ position=position%increment;
+ int iaxis=1;
+ while (_local_array_indices[idim][iaxis]<=axis_pos)
+ {
+ subdomain_id+=proc_increment;
+ iaxis++;
+ }
+ axis_position[idim]=axis_pos-_local_array_indices[idim][iaxis-1];
+ axis_offset[idim]=iaxis;
+ }
+ int local=0;
+ int local_increment=1;
+ for (int idim=_dimension-1; idim>=0; idim--)
+ {
+ local+=axis_position[idim]*local_increment;
+ local_increment*=_local_array_indices[idim][axis_offset[idim]]-_local_array_indices[idim][axis_offset[idim]-1];
+ }
+ return make_pair(subdomain_id,local);
+ }
+
+ //!converts local number to a global number
+ int BlockTopology::localToGlobal(const pair<int,int> local) const
+ {
+
+ int subdomain_id=local.first;
+ int global=0;
+ int loc=local.second;
+ int increment=_nb_elems;
+ int proc_increment=_proc_group->size();
+ int local_increment=getNbLocalElements();
+ for (int idim=0; idim < _dimension; idim++)
+ {
+ int axis_size=_local_array_indices[idim].size()-1;
+ int axis_nb_elem=_local_array_indices[idim][axis_size];
+ increment=axis_nb_elem==0?0:increment/axis_nb_elem;
+ proc_increment = proc_increment/(axis_size);
+ int proc_axis=subdomain_id/proc_increment;
+ subdomain_id=subdomain_id%proc_increment;
+ int local_axis_nb_elem=_local_array_indices[idim][proc_axis+1]-_local_array_indices[idim][proc_axis];
+ local_increment = (local_axis_nb_elem==0)?0:(local_increment/local_axis_nb_elem);
+ int iaxis=((local_increment==0)?0:(loc/local_increment))+_local_array_indices[idim][proc_axis];
+ global+=increment*iaxis;
+ loc = (local_increment==0)?0:(loc%local_increment);
+ }
+ return global;
+ }
+
+ //Retrieves the local number of elements
+ int BlockTopology::getNbLocalElements()const
+ {
+ int position=_proc_group->myRank();
+ int nb_elem = 1;
+ int increment=1;
+ for (int i=_dimension-1; i>=0; i--)
+ {
+ increment *=_nb_procs_per_dim[i];
+ int idim=position%increment;
+ position=position/increment;
+ int imin=_local_array_indices[i][idim];
+ int imax=_local_array_indices[i][idim+1];
+ nb_elem*=(imax-imin);
+ }
+ return nb_elem;
+ }
+
/*! Retrieves the min and max indices of the domain stored locally
* for each dimension. The output vector has the topology dimension
* as a size and each pair <int,int> contains min and max. Indices
