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mpi.cpp
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Sat, Oct 19, 17:12
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Mon, Oct 21, 17:12 (2 d)
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rTAMAAS tamaas
mpi.cpp
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/*
* SPDX-License-Indentifier: AGPL-3.0-or-later
*
* Copyright (©) 2016-2023 EPFL (École Polytechnique Fédérale de Lausanne),
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
* Copyright (©) 2020-2023 Lucas Frérot
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "mpi_interface.hh"
#include "partitioner.hh"
#include "wrap.hh"
#include <pybind11/stl.h>
/* -------------------------------------------------------------------------- */
namespace
tamaas
{
/* -------------------------------------------------------------------------- */
namespace
wrap
{
using
namespace
py
::
literals
;
/* -------------------------------------------------------------------------- */
void
wrapMPI
(
py
::
module
&
mod
)
{
auto
mpi_mod
=
mod
.
def_submodule
(
"mpi"
);
mpi_mod
.
doc
()
=
"Module defining convenience MPI routines."
;
py
::
class_
<
mpi
::
sequential
>
(
mpi_mod
,
"sequential"
)
.
def
(
py
::
init
<>
())
.
def
(
"__enter__"
,
[](
mpi
::
sequential
&
/*obj*/
)
{
mpi
::
sequential
::
enter
();
})
.
def
(
"__exit__"
,
[](
mpi
::
sequential
&
/*obj*/
,
py
::
object
/*unused*/
,
py
::
object
/*unused*/
,
py
::
object
/*unused*/
)
{
mpi
::
sequential
::
exit
();
});
mpi_mod
.
def
(
"local_shape"
,
[](
std
::
vector
<
UInt
>
global
)
{
switch
(
global
.
size
())
{
case
1
:
return
Partitioner
<
1
>::
local_size
(
global
);
case
2
:
return
Partitioner
<
2
>::
local_size
(
global
);
default
:
TAMAAS_EXCEPTION
(
"Please provide a 1D/2D shape"
);
}
},
"global_shape"
_a
,
"Gives the local size of a 1D/2D global shape"
);
mpi_mod
.
def
(
"global_shape"
,
[](
std
::
vector
<
UInt
>
local
)
{
switch
(
local
.
size
())
{
case
1
:
return
Partitioner
<
1
>::
global_size
(
local
);
case
2
:
return
Partitioner
<
2
>::
global_size
(
local
);
default
:
TAMAAS_EXCEPTION
(
"Please provide a 1D/2D shape"
);
}
},
"local_shape"
_a
,
"Gives the global shape of a 1D/2D local shape"
);
mpi_mod
.
def
(
"local_offset"
,
[](
std
::
vector
<
UInt
>
global
)
{
switch
(
global
.
size
())
{
case
1
:
return
Partitioner
<
1
>::
local_offset
(
global
);
case
2
:
return
Partitioner
<
2
>::
local_offset
(
global
);
default
:
TAMAAS_EXCEPTION
(
"Please provide a 1D/2D shape"
);
}
},
"global_shape"
_a
,
"Gives the local offset of a 1D/2D global shape"
);
mpi_mod
.
def
(
"gather"
,
&
Partitioner
<
2
>::
gather
<
Real
>
,
py
::
return_value_policy
::
move
,
"Gather 2D surfaces"
);
mpi_mod
.
def
(
"scatter"
,
&
Partitioner
<
2
>::
scatter
<
Real
>
,
py
::
return_value_policy
::
move
,
"Scatter 2D surfaces"
);
mpi_mod
.
def
(
"size"
,
[]()
{
return
mpi
::
size
();
},
"Returns the number of MPI processes"
);
mpi_mod
.
def
(
"rank"
,
[]()
{
return
mpi
::
rank
();
},
"Returns the rank of the local process"
);
}
}
// namespace wrap
/* -------------------------------------------------------------------------- */
}
// namespace tamaas
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