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rAKA akantu
test_node_synchronizer.cc
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/**
* @file test_node_synchronizer.cc
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Thu May 11 2017
* @date last modification: Fri Jan 26 2018
*
* @brief test the default node synchronizer present in the mesh
*
* @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 "test_synchronizers_fixture.hh"
/* -------------------------------------------------------------------------- */
#include "communicator.hh"
#include "data_accessor.hh"
#include "mesh.hh"
#include "node_synchronizer.hh"
/* -------------------------------------------------------------------------- */
#include <chrono>
#include <limits>
#include <random>
#include <thread>
/* -------------------------------------------------------------------------- */
using
namespace
akantu
;
class
DataAccessorTest
:
public
DataAccessor
<
UInt
>
{
public
:
explicit
DataAccessorTest
(
Array
<
int
>
&
data
)
:
data
(
data
)
{}
UInt
getNbData
(
const
Array
<
UInt
>
&
nodes
,
const
SynchronizationTag
&
)
const
{
return
nodes
.
size
()
*
sizeof
(
int
);
}
void
packData
(
CommunicationBuffer
&
buffer
,
const
Array
<
UInt
>
&
nodes
,
const
SynchronizationTag
&
)
const
{
for
(
auto
node
:
nodes
)
{
buffer
<<
data
(
node
);
}
}
void
unpackData
(
CommunicationBuffer
&
buffer
,
const
Array
<
UInt
>
&
nodes
,
const
SynchronizationTag
&
)
{
for
(
auto
node
:
nodes
)
{
buffer
>>
data
(
node
);
}
}
protected
:
Array
<
int
>
&
data
;
};
class
TestNodeSynchronizerFixture
:
public
TestSynchronizerFixture
{
public
:
static
constexpr
int
max_int
=
std
::
numeric_limits
<
int
>::
max
();
void
SetUp
()
override
{
TestSynchronizerFixture
::
SetUp
();
this
->
distribute
();
UInt
nb_nodes
=
this
->
mesh
->
getNbNodes
();
node_data
=
std
::
make_unique
<
Array
<
int
>>
(
nb_nodes
);
for
(
auto
&&
data
:
enumerate
(
*
node_data
))
{
auto
n
=
std
::
get
<
0
>
(
data
);
auto
&
d
=
std
::
get
<
1
>
(
data
);
UInt
gn
=
this
->
mesh
->
getNodeGlobalId
(
n
);
if
(
this
->
mesh
->
isMasterNode
(
n
))
d
=
gn
;
else
if
(
this
->
mesh
->
isLocalNode
(
n
))
d
=
-
gn
;
else
if
(
this
->
mesh
->
isSlaveNode
(
n
))
d
=
max_int
;
else
d
=
-
max_int
;
}
data_accessor
=
std
::
make_unique
<
DataAccessorTest
>
(
*
node_data
);
}
void
TearDown
()
override
{
data_accessor
.
reset
(
nullptr
);
node_data
.
reset
(
nullptr
);
}
void
checkData
()
{
for
(
auto
&&
data
:
enumerate
(
*
this
->
node_data
))
{
auto
n
=
std
::
get
<
0
>
(
data
);
auto
&
d
=
std
::
get
<
1
>
(
data
);
UInt
gn
=
this
->
mesh
->
getNodeGlobalId
(
n
);
if
(
this
->
mesh
->
isMasterNode
(
n
))
EXPECT_EQ
(
d
,
gn
);
else
if
(
this
->
mesh
->
isLocalNode
(
n
))
EXPECT_EQ
(
d
,
-
gn
);
else
if
(
this
->
mesh
->
isSlaveNode
(
n
))
EXPECT_EQ
(
d
,
gn
);
else
EXPECT_EQ
(
d
,
-
max_int
);
}
}
protected
:
std
::
unique_ptr
<
Array
<
int
>>
node_data
;
std
::
unique_ptr
<
DataAccessorTest
>
data_accessor
;
};
/* -------------------------------------------------------------------------- */
constexpr
int
TestNodeSynchronizerFixture
::
max_int
;
/* -------------------------------------------------------------------------- */
TEST_F
(
TestNodeSynchronizerFixture
,
SynchroneOnce
)
{
auto
&
synchronizer
=
this
->
mesh
->
getNodeSynchronizer
();
synchronizer
.
synchronizeOnce
(
*
this
->
data_accessor
,
SynchronizationTag
::
_test
);
this
->
checkData
();
}
/* -------------------------------------------------------------------------- */
TEST_F
(
TestNodeSynchronizerFixture
,
Synchrone
)
{
auto
&
node_synchronizer
=
this
->
mesh
->
getNodeSynchronizer
();
node_synchronizer
.
synchronize
(
*
this
->
data_accessor
,
SynchronizationTag
::
_test
);
this
->
checkData
();
}
/* -------------------------------------------------------------------------- */
TEST_F
(
TestNodeSynchronizerFixture
,
Asynchrone
)
{
auto
&
synchronizer
=
this
->
mesh
->
getNodeSynchronizer
();
synchronizer
.
asynchronousSynchronize
(
*
this
->
data_accessor
,
SynchronizationTag
::
_test
);
std
::
random_device
r
;
std
::
default_random_engine
engine
(
r
());
std
::
uniform_int_distribution
<
int
>
uniform_dist
(
10
,
100
);
std
::
chrono
::
microseconds
delay
(
uniform_dist
(
engine
));
std
::
this_thread
::
sleep_for
(
delay
);
synchronizer
.
waitEndSynchronize
(
*
this
->
data_accessor
,
SynchronizationTag
::
_test
);
this
->
checkData
();
}
/* -------------------------------------------------------------------------- */
TEST_F
(
TestNodeSynchronizerFixture
,
Gather
)
{
auto
&
synchronizer
=
this
->
mesh
->
getNodeSynchronizer
();
const
auto
&
comm
=
akantu
::
Communicator
::
getStaticCommunicator
();
Int
prank
=
comm
.
whoAmI
();
if
(
prank
==
0
)
{
Array
<
int
>
all_data
(
this
->
mesh
->
getNbGlobalNodes
());
synchronizer
.
gather
(
*
(
this
->
node_data
),
all_data
);
for
(
auto
&&
data
:
enumerate
(
all_data
))
{
EXPECT_EQ
(
std
::
get
<
0
>
(
data
),
std
::
abs
(
std
::
get
<
1
>
(
data
)));
}
}
else
{
synchronizer
.
gather
(
*
(
this
->
node_data
));
}
}
/* -------------------------------------------------------------------------- */
TEST_F
(
TestNodeSynchronizerFixture
,
Scatter
)
{
Array
<
int
>
local_data
(
this
->
mesh
->
getNbNodes
(),
1
,
this
->
max_int
);
auto
&
synchronizer
=
this
->
mesh
->
getNodeSynchronizer
();
if
(
prank
==
0
)
{
Array
<
int
>
all_data
(
this
->
mesh
->
getNbGlobalNodes
());
for
(
auto
&&
data
:
enumerate
(
all_data
))
{
std
::
get
<
1
>
(
data
)
=
std
::
get
<
0
>
(
data
);
}
synchronizer
.
scatter
(
local_data
,
all_data
);
}
else
{
synchronizer
.
scatter
(
local_data
);
}
for
(
auto
&&
data
:
enumerate
(
local_data
))
{
auto
&&
n
=
std
::
get
<
0
>
(
data
);
auto
&&
d
=
std
::
get
<
1
>
(
data
);
UInt
gn
=
this
->
mesh
->
getNodeGlobalId
(
n
);
if
(
this
->
mesh
->
isPureGhostNode
(
n
))
{
EXPECT_EQ
(
d
,
this
->
max_int
);
}
else
{
EXPECT_EQ
(
d
,
gn
);
}
}
}
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