Page Menu
Home
c4science
Search
Configure Global Search
Log In
Files
F60814975
interface.hh
No One
Temporary
Actions
Download File
Edit File
Delete File
View Transforms
Subscribe
Mute Notifications
Award Token
Subscribers
None
File Metadata
Details
File Info
Storage
Attached
Created
Thu, May 2, 18:01
Size
2 KB
Mime Type
text/x-c
Expires
Sat, May 4, 18:01 (2 d)
Engine
blob
Format
Raw Data
Handle
17422000
Attached To
rTAMAAS tamaas
interface.hh
View Options
/*
* 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/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef FFTW_MPI_INTERFACE_HH
#define FFTW_MPI_INTERFACE_HH
/* -------------------------------------------------------------------------- */
#include "mpi_interface.hh"
#include <cstdlib>
#include <numeric>
#include <stdexcept>
#include <tuple>
#ifdef TAMAAS_USE_MPI
#include <fftw3-mpi.h>
#endif
/* -------------------------------------------------------------------------- */
namespace
fftw_impl
{
namespace
mpi_dummy
{
inline
void
init
()
{}
inline
void
cleanup
()
{}
inline
auto
local_size_many
(
int
rank
,
const
std
::
ptrdiff_t
*
size
,
std
::
ptrdiff_t
howmany
)
{
return
std
::
make_tuple
(
howmany
*
std
::
accumulate
(
size
,
size
+
rank
,
std
::
ptrdiff_t
{
1
},
std
::
multiplies
<
void
>
()),
size
[
0
],
0
);
}
}
// namespace mpi_dummy
#ifdef TAMAAS_USE_MPI
namespace
mpi_impl
{
inline
void
init
()
{
fftw_mpi_init
();
}
inline
void
cleanup
()
{
fftw_mpi_cleanup
();
}
inline
auto
local_size_many
(
int
rank
,
const
std
::
ptrdiff_t
*
size
,
std
::
ptrdiff_t
howmany
)
{
if
(
rank
<
2
)
throw
std
::
domain_error
(
"FFTW-MPI cannot be used for 1D transforms"
);
std
::
ptrdiff_t
local_n0
,
local_n0_offset
;
auto
res
=
fftw_mpi_local_size_many
(
rank
,
size
,
howmany
,
FFTW_MPI_DEFAULT_BLOCK
,
::
tamaas
::
mpi
::
comm
::
world
(),
&
local_n0
,
&
local_n0_offset
);
return
std
::
make_tuple
(
res
,
local_n0
,
local_n0_offset
);
}
}
// namespace mpi_impl
namespace
mpi
=
mpi_impl
;
#else
namespace
mpi
=
mpi_dummy
;
#endif
}
// namespace fftw
#endif
Event Timeline
Log In to Comment