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distributed_synchronizer.hh
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distributed_synchronizer.hh
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/**
* @file distributed_synchronizer.hh
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
* @author Dana Christen <dana.christen@epfl.ch>
* @author Marco Vocialta <marco.vocialta@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Thu Jun 16 2011
* @date last modification: Fri Sep 05 2014
*
* @brief wrapper to the static communicator
*
* @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/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_DISTRIBUTED_SYNCHRONIZER_HH__
#define __AKANTU_DISTRIBUTED_SYNCHRONIZER_HH__
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "aka_array.hh"
#include "synchronizer.hh"
#include "mesh.hh"
#include "mesh_partition.hh"
#include "communication_buffer.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_AKANTU__
class DistributedSynchronizer : public Synchronizer, public MeshEventHandler {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
DistributedSynchronizer(Mesh & mesh,
SynchronizerID id = "distributed_synchronizer",
MemoryID memory_id = 0);
public:
virtual ~DistributedSynchronizer();
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// get a mesh and a partition and create the local mesh and the associated
/// DistributedSynchronizer
static DistributedSynchronizer *
createDistributedSynchronizerMesh(Mesh & mesh,
const MeshPartition * partition,
UInt root = 0,
SynchronizerID id = "distributed_synchronizer",
MemoryID memory_id = 0);
/* ------------------------------------------------------------------------ */
/* Inherited from Synchronizer */
/* ------------------------------------------------------------------------ */
/// asynchronous synchronization of ghosts
void asynchronousSynchronize(DataAccessor & data_accessor,SynchronizationTag tag);
/// wait end of asynchronous synchronization of ghosts
void waitEndSynchronize(DataAccessor & data_accessor,SynchronizationTag tag);
/// build processor to element corrispondance
void buildPrankToElement();
virtual void printself(std::ostream & stream, int indent = 0) const;
/// mesh event handler onRemovedElement
virtual void onElementsRemoved(const Array<Element> & element_list,
const ElementTypeMapArray<UInt> & new_numbering,
const RemovedElementsEvent & event);
/// filter elements of a certain kind and copy them into a new synchronizer
void filterElementsByKind(DistributedSynchronizer * new_synchronizer,
ElementKind kind);
/// reset send and recv element lists
void reset();
/// compute buffer size for a given tag and data accessor
void computeBufferSize(DataAccessor & data_accessor, SynchronizationTag tag);
/// recalculate buffer sizes for all tags
void computeAllBufferSizes(DataAccessor & data_accessor);
protected:
/// fill the nodes type vector
void fillNodesType(Mesh & mesh);
void fillNodesType(const MeshData & mesh_data,
DynamicCommunicationBuffer * buffers,
const std::string & tag_name,
const ElementType & el_type,
const Array<UInt> & partition_num);
template<typename T>
void fillTagBufferTemplated(const MeshData & mesh_data,
DynamicCommunicationBuffer * buffers,
const std::string & tag_name,
const ElementType & el_type,
const Array<UInt> & partition_num,
const CSR<UInt> & ghost_partition);
void fillTagBuffer(const MeshData & mesh_data,
DynamicCommunicationBuffer * buffers,
const std::string & tag_name,
const ElementType & el_type,
const Array<UInt> & partition_num,
const CSR<UInt> & ghost_partition);
template<typename T, typename BufferType>
void populateMeshDataTemplated(MeshData & mesh_data,
BufferType & buffer,
const std::string & tag_name,
const ElementType & el_type,
UInt nb_component,
UInt nb_local_element,
UInt nb_ghost_element);
template <typename BufferType>
void populateMeshData(MeshData & mesh_data,
BufferType & buffer,
const std::string & tag_name,
const ElementType & el_type,
const MeshDataTypeCode & type_code,
UInt nb_component,
UInt nb_local_element,
UInt nb_ghost_element);
/// fill the communications array of a distributedSynchronizer based on a partition array
void fillCommunicationScheme(const UInt * partition,
UInt nb_local_element,
UInt nb_ghost_element,
ElementType type);
/// function that handels the MeshData to be split (root side)
static void synchronizeTagsSend(DistributedSynchronizer & communicator,
UInt root,
Mesh & mesh,
UInt nb_tags,
const ElementType & type,
const Array<UInt> & partition_num,
const CSR<UInt> & ghost_partition,
UInt nb_local_element,
UInt nb_ghost_element);
/// function that handles the MeshData to be split (other nodes)
static void synchronizeTagsRecv(DistributedSynchronizer & communicator,
UInt root,
Mesh & mesh,
UInt nb_tags,
const ElementType & type,
UInt nb_local_element,
UInt nb_ghost_element);
/// function that handles the preexisting groups in the mesh
static void synchronizeElementGroups(DistributedSynchronizer & communicator,
UInt root,
Mesh & mesh,
const ElementType & type,
const Array<UInt> & partition_num,
const CSR<UInt> & ghost_partition,
UInt nb_element);
/// function that handles the preexisting groups in the mesh
static void synchronizeElementGroups(DistributedSynchronizer & communicator,
UInt root,
Mesh & mesh,
const ElementType & type);
template<class CommunicationBuffer>
static void fillElementGroupsFromBuffer(DistributedSynchronizer & communicator,
Mesh & mesh,
const ElementType & type,
CommunicationBuffer & buffer);
/// function that handles the preexisting groups in the mesh
static void synchronizeNodeGroupsMaster(DistributedSynchronizer & communicator,
UInt root,
Mesh & mesh);
/// function that handles the preexisting groups in the mesh
static void synchronizeNodeGroupsSlaves(DistributedSynchronizer & communicator,
UInt root,
Mesh & mesh);
template<class CommunicationBuffer>
static void fillNodeGroupsFromBuffer(DistributedSynchronizer & communicator,
Mesh & mesh,
CommunicationBuffer & buffer);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
AKANTU_GET_MACRO(PrankToElement, prank_to_element, const ElementTypeMapArray<UInt> &);
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
private:
enum CommTags {
TAG_SIZES = 0,
TAG_CONNECTIVITY = 1,
TAG_DATA = 2,
TAG_PARTITIONS = 3,
TAG_NB_NODES = 4,
TAG_NODES = 5,
TAG_COORDINATES = 6,
TAG_NODES_TYPE = 7,
TAG_MESH_DATA = 8,
TAG_ELEMENT_GROUP = 9,
TAG_NODE_GROUP = 10,
};
protected:
/// reference to the underlying mesh
Mesh & mesh;
std::map<SynchronizationTag, Communication> communications;
/// list of element to send to proc p
Array<Element> * send_element;
/// list of element to receive from proc p
Array<Element> * recv_element;
UInt nb_proc;
UInt rank;
friend class FilteredSynchronizer;
friend class FacetSynchronizer;
ElementTypeMapArray<UInt> prank_to_element;
};
__END_AKANTU__
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
#include "distributed_synchronizer_tmpl.hh"
#endif /* __AKANTU_DISTRIBUTED_SYNCHRONIZER_HH__ */

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