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synchronizer.hh
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Wed, Sep 25, 11:08
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rAKA akantu
synchronizer.hh
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/**
* @file synchronizer.hh
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @author Aurelia Cuba Ramos <aurelia.cubaramos@epfl.ch>
*
* @date creation: Wed Sep 01 2010
* @date last modification: Tue Apr 30 2013
*
* @brief interface for communicator and pbc synchronizers
*
* @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_SYNCHRONIZER_HH__
#define __AKANTU_SYNCHRONIZER_HH__
/* -------------------------------------------------------------------------- */
#include "aka_memory.hh"
#include "data_accessor.hh"
#include "real_static_communicator.hh"
#include "static_communicator.hh"
/* -------------------------------------------------------------------------- */
#include <map>
/* -------------------------------------------------------------------------- */
__BEGIN_AKANTU__
class
Synchronizer
:
protected
Memory
{
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public
:
Synchronizer
(
SynchronizerID
id
=
"synchronizer"
,
MemoryID
memory_id
=
0
);
virtual
~
Synchronizer
(){};
virtual
void
printself
(
__attribute__
((
unused
))
std
::
ostream
&
stream
,
__attribute__
((
unused
))
int
indent
=
0
)
const
{};
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public
:
/// synchronize ghosts
void
synchronize
(
DataAccessor
&
data_accessor
,
SynchronizationTag
tag
);
/// asynchronous synchronization of ghosts
virtual
void
asynchronousSynchronize
(
DataAccessor
&
data_accessor
,
SynchronizationTag
tag
)
=
0
;
/// wait end of asynchronous synchronization of ghosts
virtual
void
waitEndSynchronize
(
DataAccessor
&
data_accessor
,
SynchronizationTag
tag
)
=
0
;
/// compute buffer size for a given tag and data accessor
virtual
void
computeBufferSize
(
DataAccessor
&
data_accessor
,
SynchronizationTag
tag
)
=
0
;
/**
* tag = |__________20_________|___8____|_4_|
* | proc | num mes| ct|
*/
class
Tag
{
public
:
Tag
()
:
tag
(
0
)
{}
Tag
(
int
val
)
:
tag
(
val
)
{}
operator
int
()
{
return
int
(
tag
);
}
// remove the sign bit
template
<
typename
CommTag
>
static
inline
Tag
genTag
(
int
proc
,
UInt
msg_count
,
CommTag
tag
)
{
Tag
t
;
int
max_tag
=
StaticCommunicator
::
getStaticCommunicator
().
getMaxTag
();
t
.
tag
=
((((
proc
&
0xFFFFF
)
<<
12
)
+
((
msg_count
&
0xFF
)
<<
4
)
+
((
Int
)
tag
&
0xF
)))
%
max_tag
;
return
t
;
}
virtual
void
printself
(
std
::
ostream
&
stream
,
__attribute__
((
unused
))
int
indent
=
0
)
const
{
stream
<<
(
tag
>>
12
)
<<
":"
<<
(
tag
>>
4
&
0xFF
)
<<
":"
<<
(
tag
&
0xF
);
}
private
:
int
tag
;
};
<<<<<<<
HEAD
template
<
typename
CommTag
>
/// generate the tag from the ID
inline
Tag
genTagFromID
(
CommTag
tag
)
{
Tag
t
(
std
::
abs
((
int
(
hash
<
std
::
string
>
(
this
->
getID
()))
<<
4
)
+
(
tag
&
0xF
)));
=======
template
<
typename
CommTag
>
inline
Tag
genTagFromID
(
CommTag
tag
)
{
int
max_tag
=
StaticCommunicator
::
getStaticCommunicator
().
getMaxTag
();
Tag
t
(
(
std
::
abs
((
int
(
hash
<
std
::
string
>
(
this
->
getID
()))
<<
4
)
+
(
tag
&
0xF
)))
%
max_tag
);
>>>>>>>
686
ac09f1c085eb03110a75ead1a11087964f10c
return
t
;
}
protected
:
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public
:
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected
:
class
Communication
{
public
:
void
resize
(
UInt
size
)
{
send_buffer
.
resize
(
size
);
recv_buffer
.
resize
(
size
);
size_to_send
.
resize
(
size
);
size_to_receive
.
resize
(
size
);
}
public
:
/// size of data to send to each processor
std
::
vector
<
UInt
>
size_to_send
;
/// size of data to recv to each processor
std
::
vector
<
UInt
>
size_to_receive
;
std
::
vector
<
CommunicationBuffer
>
send_buffer
;
std
::
vector
<
CommunicationBuffer
>
recv_buffer
;
std
::
vector
<
CommunicationRequest
*>
send_requests
;
std
::
vector
<
CommunicationRequest
*>
recv_requests
;
};
/// id of the synchronizer
SynchronizerID
id
;
/// message counter per tag
std
::
map
<
SynchronizationTag
,
UInt
>
tag_counter
;
/// the static memory instance
StaticCommunicator
*
static_communicator
;
};
/// standard output stream operator
inline
std
::
ostream
&
operator
<<
(
std
::
ostream
&
stream
,
const
Synchronizer
&
_this
)
{
_this
.
printself
(
stream
);
return
stream
;
}
inline
std
::
ostream
&
operator
<<
(
std
::
ostream
&
stream
,
const
Synchronizer
::
Tag
&
_this
)
{
_this
.
printself
(
stream
);
return
stream
;
}
__END_AKANTU__
#endif
/* __AKANTU_SYNCHRONIZER_HH__ */
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