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dof_synchronizer.hh
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/**
* @file dof_synchronizer.hh
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Fri Jun 17 2011
* @date last modification: Fri Mar 21 2014
*
* @brief Synchronize Array of DOFs
*
* @section LICENSE
*
* Copyright (©) 2010-2012, 2014 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "aka_array.hh"
#include "static_communicator.hh"
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_DOF_SYNCHRONIZER_HH__
#define __AKANTU_DOF_SYNCHRONIZER_HH__
__BEGIN_AKANTU__
class Mesh;
template<typename T>
class AddOperation {
public:
inline T operator()(T & b, T & a) { return a + b; };
};
class DOFSynchronizer {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
DOFSynchronizer(const Mesh & mesh, UInt nb_degree_of_freedom);
virtual ~DOFSynchronizer();
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// init the scheme for scatter and gather operation, need extra memory
void initScatterGatherCommunicationScheme();
/// initialize the equation number with local ids
void initLocalDOFEquationNumbers();
/// initialize the equation number with local ids
void initGlobalDOFEquationNumbers();
/**
* Gather the DOF value on the root proccessor
*
* @param to_gather data to gather
* @param root processor on which data are gathered
* @param gathered Array containing the gathered data, only valid on root processor
*/
template<typename T>
void gather(const Array<T> & to_gather, UInt root,
Array<T> * gathered = NULL) const;
/**
* Scatter a DOF Array form root to all processors
*
* @param scattered data to scatter, only valid on root processor
* @param root processor scattering data
* @param to_scatter result of scattered data
*/
template<typename T>
void scatter(Array<T> & scattered, UInt root,
const Array<T> * to_scatter = NULL) const;
template<typename T> void synchronize(Array<T> & vector) const ;
template<template <class> class Op, typename T> void reduceSynchronize(Array<T> & vector) const;
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
/// get the equation_number Array
AKANTU_GET_MACRO(LocalDOFEquationNumbers, local_dof_equation_numbers, const Array<Int> &);
AKANTU_GET_MACRO(GlobalDOFEquationNumbers, global_dof_equation_numbers, const Array<Int> &);
Array<Int> * getLocalDOFEquationNumbersPointer(){return &local_dof_equation_numbers;};
Array<Int> * getGlobalDOFEquationNumbersPointer(){return &global_dof_equation_numbers;};
typedef unordered_map<Int, UInt>::type GlobalEquationNumberMap;
AKANTU_GET_MACRO(GlobalEquationNumberToLocal, global_dof_equation_number_to_local, const GlobalEquationNumberMap &)
/// get the Array of global ids of the dofs
AKANTU_GET_MACRO(DOFGlobalIDs, dof_global_ids, const Array<UInt> &);
/// get the global id of a dof
inline UInt getDOFGlobalID(UInt local_id) const {
return dof_global_ids(local_id);
}
/// get the local id of a global dof
inline UInt getDOFLocalID(UInt global_id) const {
return global_dof_to_local.find(global_id)->second;
}
/// get the DOF type Array
AKANTU_GET_MACRO(DOFTypes, dof_types, const Array<Int> &);
AKANTU_GET_MACRO(NbDOFs, nb_dofs, UInt);
AKANTU_GET_MACRO(NbGlobalDOFs, nb_global_dofs, UInt);
/// say if a node is a pure ghost node
inline bool isPureGhostDOF(UInt n) const;
/// say if a node is pure local or master node
inline bool isLocalOrMasterDOF(UInt n) const;
inline bool isLocalDOF(UInt n) const;
inline bool isMasterDOF(UInt n) const;
inline bool isSlaveDOF(UInt n) const;
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
private:
/// equation number position where a dof is synchronized in the matrix (by default = global id)
Array<Int> global_dof_equation_numbers;
Array<Int> local_dof_equation_numbers;
GlobalEquationNumberMap global_dof_equation_number_to_local;
/// DOF global id
Array<UInt> dof_global_ids;
/*
* DOF type -3 pure ghost, -2 master for the dof, -1 normal dof, i in
* [0-N] slave dof and master is proc i
*/
Array<Int> dof_types;
/// number of dofs
UInt nb_dofs;
UInt nb_global_dofs;
unordered_map<UInt, UInt>::type global_dof_to_local;
UInt prank;
UInt psize;
StaticCommunicator * communicator;
struct PerProcInformations {
/// dofs to send to the proc
Array<UInt> slave_dofs;
/// dofs to recvs from the proc
Array<UInt> master_dofs;
/* ---------------------------------------------------------------------- */
/* Data for gather/scatter */
/* ---------------------------------------------------------------------- */
/// the dof that the node handle
Array<UInt> dofs;
/// the dof that the proc need
Array<UInt> needed_dofs;
};
std::vector<PerProcInformations> proc_informations;
/// nb dofs with type -1 or -2
UInt nb_local_dofs;
/// nb dof with type >= 0
UInt nb_needed_dofs;
bool gather_scatter_scheme_initialized;
};
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
#if defined (AKANTU_INCLUDE_INLINE_IMPL)
# include "dof_synchronizer_inline_impl.cc"
#endif
/// standard output stream operator
// inline std::ostream & operator <<(std::ostream & stream, const DOFSynchronizer & _this)
// {
// _this.printself(stream);
// return stream;
// }
__END_AKANTU__
#endif /* __AKANTU_DOF_SYNCHRONIZER_HH__ */

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