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mesh_utils_distribution.cc
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rAKA akantu
mesh_utils_distribution.cc
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/**
* @file mesh_utils_distribution.cc
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Tue Nov 08 2016
* @date last modification: Tue Nov 07 2017
*
* @brief Implementation of the methods of mesh utils distribute
*
* @section LICENSE
*
* Copyright (©) 2016-2018 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 "mesh_utils_distribution.hh"
#include "element_info_per_processor.hh"
#include "element_synchronizer.hh"
#include "mesh.hh"
#include "mesh_accessor.hh"
#include "mesh_partition.hh"
#include "mesh_utils.hh"
#include "node_info_per_processor.hh"
#include "node_synchronizer.hh"
/* -------------------------------------------------------------------------- */
namespace
akantu
{
namespace
MeshUtilsDistribution
{
/* ------------------------------------------------------------------------ */
void
distributeMeshCentralized
(
Mesh
&
mesh
,
UInt
,
const
MeshPartition
&
partition
)
{
MeshAccessor
mesh_accessor
(
mesh
);
ElementSynchronizer
&
element_synchronizer
=
mesh_accessor
.
getElementSynchronizer
();
NodeSynchronizer
&
node_synchronizer
=
mesh_accessor
.
getNodeSynchronizer
();
const
Communicator
&
comm
=
element_synchronizer
.
getCommunicator
();
UInt
nb_proc
=
comm
.
getNbProc
();
UInt
my_rank
=
comm
.
whoAmI
();
mesh_accessor
.
setNbGlobalNodes
(
mesh
.
getNbNodes
());
auto
&
gids
=
mesh_accessor
.
getNodesGlobalIds
();
if
(
nb_proc
==
1
)
return
;
gids
.
resize
(
0
);
mesh
.
synchronizeGroupNames
();
AKANTU_DEBUG_ASSERT
(
partition
.
getNbPartition
()
==
nb_proc
,
"The number of partition does not match the number of processors: "
<<
partition
.
getNbPartition
()
<<
" != "
<<
nb_proc
);
/**
* connectivity and communications scheme construction
*/
UInt
count
=
0
;
/* --- MAIN LOOP ON TYPES --- */
for
(
auto
&&
type
:
mesh
.
elementTypes
(
_all_dimensions
,
_not_ghost
,
_ek_not_defined
))
{
/// \todo change this ugly way to avoid a problem if an element
/// type is present in the mesh but not in the partitions
try
{
partition
.
getPartition
(
type
,
_not_ghost
);
}
catch
(...)
{
continue
;
}
MasterElementInfoPerProc
proc_infos
(
element_synchronizer
,
count
,
my_rank
,
type
,
partition
);
proc_infos
.
synchronize
();
++
count
;
}
{
/// Ending the synchronization of elements by sending a stop message
MasterElementInfoPerProc
proc_infos
(
element_synchronizer
,
count
,
my_rank
,
_not_defined
,
partition
);
proc_infos
.
synchronize
();
++
count
;
}
/**
* Nodes synchronization
*/
MasterNodeInfoPerProc
node_proc_infos
(
node_synchronizer
,
count
,
my_rank
);
node_proc_infos
.
synchronize
();
MeshUtils
::
fillElementToSubElementsData
(
mesh
);
mesh_accessor
.
setDistributed
();
AKANTU_DEBUG_OUT
();
}
/* ------------------------------------------------------------------------ */
void
distributeMeshCentralized
(
Mesh
&
mesh
,
UInt
root
)
{
MeshAccessor
mesh_accessor
(
mesh
);
ElementSynchronizer
&
element_synchronizer
=
mesh_accessor
.
getElementSynchronizer
();
NodeSynchronizer
&
node_synchronizer
=
mesh_accessor
.
getNodeSynchronizer
();
const
Communicator
&
comm
=
element_synchronizer
.
getCommunicator
();
UInt
nb_proc
=
comm
.
getNbProc
();
mesh_accessor
.
getNodesGlobalIds
().
resize
(
0
);
if
(
nb_proc
==
1
)
return
;
mesh
.
synchronizeGroupNames
();
/**
* connectivity and communications scheme construction on distant
* processors
*/
UInt
count
=
0
;
bool
need_synchronize
=
true
;
do
{
/* --------<<<<-SIZE--------------------------------------------------- */
SlaveElementInfoPerProc
proc_infos
(
element_synchronizer
,
count
,
root
);
need_synchronize
=
proc_infos
.
synchronize
();
++
count
;
}
while
(
need_synchronize
);
/**
* Nodes synchronization
*/
SlaveNodeInfoPerProc
node_proc_infos
(
node_synchronizer
,
count
,
root
);
node_proc_infos
.
synchronize
();
MeshUtils
::
fillElementToSubElementsData
(
mesh
);
mesh_accessor
.
setDistributed
();
}
}
// namespace MeshUtilsDistribution
}
// namespace akantu
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