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element_info_per_processor.cc
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rAKA akantu
element_info_per_processor.cc
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/**
* @file element_info_per_processor.cc
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Wed Mar 16 2016
* @date last modification: Fri Jul 24 2020
*
* @brief Helper class to distribute a mesh
*
*
* @section LICENSE
*
* Copyright (©) 2016-2021 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 "element_info_per_processor.hh"
#include "communicator.hh"
#include "element_synchronizer.hh"
/* -------------------------------------------------------------------------- */
#include <algorithm>
#include <iostream>
#include <map>
/* -------------------------------------------------------------------------- */
namespace
akantu
{
/* -------------------------------------------------------------------------- */
ElementInfoPerProc
::
ElementInfoPerProc
(
ElementSynchronizer
&
synchronizer
,
UInt
message_cnt
,
UInt
root
,
ElementType
type
)
:
MeshAccessor
(
synchronizer
.
getMesh
()),
synchronizer
(
synchronizer
),
rank
(
synchronizer
.
getCommunicator
().
whoAmI
()),
nb_proc
(
synchronizer
.
getCommunicator
().
getNbProc
()),
root
(
root
),
type
(
type
),
message_count
(
message_cnt
),
mesh
(
synchronizer
.
getMesh
()),
comm
(
synchronizer
.
getCommunicator
())
{}
/* -------------------------------------------------------------------------- */
bool
ElementInfoPerProc
::
synchronize
()
{
auto
need_synchronize
=
needSynchronize
();
if
(
need_synchronize
)
{
synchronizeConnectivities
();
synchronizePartitions
();
synchronizeTags
();
synchronizeGroups
();
}
return
need_synchronize
;
}
/* -------------------------------------------------------------------------- */
void
ElementInfoPerProc
::
fillCommunicationScheme
(
const
Array
<
UInt
>
&
partition
)
{
AKANTU_DEBUG_IN
();
Element
element
;
element
.
type
=
this
->
type
;
auto
&
communications
=
this
->
synchronizer
.
getCommunications
();
auto
part
=
partition
.
begin
();
std
::
map
<
UInt
,
Array
<
Element
>>
send_array_per_proc
;
for
(
UInt
lel
=
0
;
lel
<
nb_local_element
;
++
lel
)
{
UInt
nb_send
=
*
part
;
++
part
;
element
.
element
=
lel
;
element
.
ghost_type
=
_not_ghost
;
for
(
UInt
p
=
0
;
p
<
nb_send
;
++
p
,
++
part
)
{
UInt
proc
=
*
part
;
AKANTU_DEBUG
(
dblAccessory
,
"Must send : "
<<
element
<<
" to proc "
<<
proc
);
send_array_per_proc
[
proc
].
push_back
(
element
);
}
}
for
(
auto
&
send_schemes
:
send_array_per_proc
)
{
if
(
send_schemes
.
second
.
empty
())
{
continue
;
}
auto
&
scheme
=
communications
.
createSendScheme
(
send_schemes
.
first
);
scheme
.
append
(
send_schemes
.
second
);
}
std
::
map
<
UInt
,
Array
<
Element
>>
recv_array_per_proc
;
for
(
UInt
gel
=
0
;
gel
<
nb_ghost_element
;
++
gel
,
++
part
)
{
UInt
proc
=
*
part
;
element
.
element
=
gel
;
element
.
ghost_type
=
_ghost
;
AKANTU_DEBUG
(
dblAccessory
,
"Must recv : "
<<
element
<<
" from proc "
<<
proc
);
recv_array_per_proc
[
proc
].
push_back
(
element
);
}
for
(
auto
&
recv_schemes
:
recv_array_per_proc
)
{
if
(
recv_schemes
.
second
.
empty
())
{
continue
;
}
auto
&
scheme
=
communications
.
createRecvScheme
(
recv_schemes
.
first
);
scheme
.
append
(
recv_schemes
.
second
);
}
AKANTU_DEBUG_OUT
();
}
/* -------------------------------------------------------------------------- */
}
// namespace akantu
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