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fft3d_wrap_cuda.cpp
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Tue, Oct 8, 02:44
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rLAMMPS lammps
fft3d_wrap_cuda.cpp
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/* ----------------------------------------------------------------------
LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
Original Version:
http://lammps.sandia.gov, Sandia National Laboratories
Steve Plimpton, sjplimp@sandia.gov
See the README file in the top-level LAMMPS directory.
-----------------------------------------------------------------------
USER-CUDA Package and associated modifications:
https://sourceforge.net/projects/lammpscuda/
Christian Trott, christian.trott@tu-ilmenau.de
Lars Winterfeld, lars.winterfeld@tu-ilmenau.de
Theoretical Physics II, University of Technology Ilmenau, Germany
See the README file in the USER-CUDA directory.
This software is distributed under the GNU General Public License.
------------------------------------------------------------------------- */
/* ----------------------------------------------------------------------
LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
http://lammps.sandia.gov, Sandia National Laboratories
Steve Plimpton, sjplimp@sandia.gov
Copyright (2003) Sandia Corporation. Under the terms of Contract
DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
certain rights in this software. This software is distributed under
the GNU General Public License.
See the README file in the top-level LAMMPS directory.
------------------------------------------------------------------------- */
#include "mpi.h"
#include "fft3d_wrap_cuda.h"
#include "error.h"
using
namespace
LAMMPS_NS
;
/* ---------------------------------------------------------------------- */
FFT3dCuda
::
FFT3dCuda
(
LAMMPS
*
lmp
,
MPI_Comm
comm
,
int
nfast
,
int
nmid
,
int
nslow
,
int
in_ilo
,
int
in_ihi
,
int
in_jlo
,
int
in_jhi
,
int
in_klo
,
int
in_khi
,
int
out_ilo
,
int
out_ihi
,
int
out_jlo
,
int
out_jhi
,
int
out_klo
,
int
out_khi
,
int
scaled
,
int
permute
,
int
*
nbuf
,
bool
init
)
:
Pointers
(
lmp
)
{
#ifdef FFT_CUFFT
plan
=
fft_3d_create_plan_cuda
(
comm
,
nfast
,
nmid
,
nslow
,
in_ilo
,
in_ihi
,
in_jlo
,
in_jhi
,
in_klo
,
in_khi
,
out_ilo
,
out_ihi
,
out_jlo
,
out_jhi
,
out_klo
,
out_khi
,
scaled
,
permute
,
nbuf
,
init
);
#endif
#ifndef FFT_CUFFT
plan
=
fft_3d_create_plan
(
comm
,
nfast
,
nmid
,
nslow
,
in_ilo
,
in_ihi
,
in_jlo
,
in_jhi
,
in_klo
,
in_khi
,
out_ilo
,
out_ihi
,
out_jlo
,
out_jhi
,
out_klo
,
out_khi
,
scaled
,
permute
,
nbuf
,
0
);
#endif
if
(
plan
==
NULL
)
error
->
one
(
FLERR
,
"Could not create 3d FFT plan"
);
}
/* ---------------------------------------------------------------------- */
FFT3dCuda
::~
FFT3dCuda
()
{
#ifdef FFT_CUFFT
fft_3d_destroy_plan_cuda
(
plan
);
#endif
#ifndef FFT_CUFFT
fft_3d_destroy_plan
(
plan
);
#endif
}
/* ---------------------------------------------------------------------- */
void
FFT3dCuda
::
compute
(
double
*
in
,
double
*
out
,
int
flag
)
{
#ifdef FFT_CUFFT
fft_3d_cuda
((
FFT_DATA
*
)
in
,(
FFT_DATA
*
)
out
,
flag
,
plan
);
#endif
#ifndef FFT_CUFFT
fft_3d
((
FFT_DATA
*
)
in
,(
FFT_DATA
*
)
out
,
flag
,
plan
);
#endif
}
/* ---------------------------------------------------------------------- */
void
FFT3dCuda
::
timing1d
(
double
*
in
,
int
nsize
,
int
flag
)
{
#ifdef FFT_CUFFT
fft_1d_only_cuda
((
FFT_DATA
*
)
in
,
nsize
,
flag
,
plan
);
#endif
#ifndef FFT_CUFFT
fft_1d_only
((
FFT_DATA
*
)
in
,
nsize
,
flag
,
plan
);
#endif
}
#ifdef FFT_CUFFT
void
FFT3dCuda
::
set_cudata
(
void
*
cudata
,
void
*
cudata2
)
{
plan
->
cudata
=
(
cufftData
*
)
cudata
;
plan
->
cudata2
=
(
cufftData
*
)
cudata2
;
}
#endif
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