source: palm/trunk/SOURCE/cuda_fft_interfaces.f90 @ 1167

Last change on this file since 1167 was 1167, checked in by raasch, 8 years ago

last commit documented

  • Property svn:keywords set to Id
File size: 3.5 KB
Line 
1 MODULE cuda_fft_interfaces
2
3!--------------------------------------------------------------------------------!
4! This file is part of PALM.
5!
6! PALM is free software: you can redistribute it and/or modify it under the terms
7! of the GNU General Public License as published by the Free Software Foundation,
8! either version 3 of the License, or (at your option) any later version.
9!
10! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
11! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12! A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
13!
14! You should have received a copy of the GNU General Public License along with
15! PALM. If not, see <http://www.gnu.org/licenses/>.
16!
17! Copyright 1997-2012  Leibniz University Hannover
18!--------------------------------------------------------------------------------!
19!
20! Current revisions:
21! -----------------
22!
23!
24! Former revisions:
25! -----------------
26! $Id: cuda_fft_interfaces.f90 1167 2013-05-24 14:03:34Z raasch $
27!
28! 1166 2013-05-24 13:55:44Z raasch
29! C_DOUBLE/COMPLEX reset to dpk,
30! DEVICE attribut added to idata/odata arguments
31!
32! 1153 2013-05-10 14:33:08Z raasch
33! code adjustment of data types for CUDA fft required by PGI 12.3 / CUDA 5.0
34!
35! 1111 2013-03-08 23:54:10Z raasch
36! idata and odata changed from 1d- to 3d-arrays
37!
38! 1106 2013-03-04 05:31:38Z raasch
39! Initial revision
40!
41! Description:
42! ------------
43! FORTRAN interfaces for the CUDA fft
44! Routines for the fft along x and y (forward/backward) using the CUDA fft
45!--------------------------------------------------------------------------------!
46
47#if defined ( __cuda_fft )
48
49    INTEGER :: CUFFT_FORWARD = -1,  &
50               CUFFT_INVERSE =  1,  &
51               CUFFT_R2C = Z'2a',   &    ! Real to Complex (interleaved)
52               CUFFT_C2R = Z'2c',   &    ! Complex (interleaved) to Real
53               CUFFT_C2C = Z'29',   &    ! Complex to Complex, interleaved
54               CUFFT_D2Z = Z'6a',   &    ! Double to Double-Complex
55               CUFFT_Z2D = Z'6c',   &    ! Double-Complex to Double
56               CUFFT_Z2Z = Z'69'         ! Double-Complex to Double-Complex
57
58    PUBLIC
59
60
61!
62!-- cufftPlan1d( cufftHandle *plan, int nx, cufftType type, int batch )
63    INTERFACE CUFFTPLAN1D
64
65       SUBROUTINE CUFFTPLAN1D( plan, nx, type, batch ) bind( C, name='cufftPlan1d' )
66
67          USE ISO_C_BINDING
68
69          INTEGER(C_INT) ::  plan
70          INTEGER(C_INT), value ::  batch, nx, type
71
72       END SUBROUTINE CUFFTPLAN1D
73
74    END INTERFACE CUFFTPLAN1D
75
76!
77!-- cufftDestroy( cufftHandle plan )  !!! remove later if not really needed !!!
78    INTERFACE CUFFTDESTROY
79
80       SUBROUTINE CUFFTDESTROY( plan ) bind( C, name='cufftDestroy' )
81
82          USE ISO_C_BINDING
83
84          INTEGER(C_INT), VALUE ::  plan
85
86       END SUBROUTINE CUFFTDESTROY
87
88    END INTERFACE CUFFTDESTROY
89
90
91    INTERFACE CUFFTEXECZ2D
92
93       SUBROUTINE CUFFTEXECZ2D( plan, idata, odata ) bind( C, name='cufftExecZ2D' )
94
95          USE ISO_C_BINDING
96          USE precision_kind
97
98          INTEGER(C_INT), VALUE ::  plan
99          COMPLEX(dpk), DEVICE  ::  idata(:,:,:)
100          REAL(dpk), DEVICE     ::  odata(:,:,:)
101
102       END SUBROUTINE CUFFTEXECZ2D
103
104    END INTERFACE CUFFTEXECZ2D
105
106
107    INTERFACE CUFFTEXECD2Z
108
109       SUBROUTINE CUFFTEXECD2Z( plan, idata, odata ) bind( C, name='cufftExecD2Z' )
110
111          USE ISO_C_BINDING
112          USE precision_kind
113
114          INTEGER(C_INT), VALUE ::  plan
115          REAL(dpk), DEVICE     ::  idata(:,:,:)
116          COMPLEX(dpk), DEVICE  ::  odata(:,:,:)
117
118       END SUBROUTINE CUFFTEXECD2Z
119
120    END INTERFACE CUFFTEXECD2Z
121
122#endif
123 END MODULE cuda_fft_interfaces
Note: See TracBrowser for help on using the repository browser.