[1106] | 1 | MODULE cuda_fft_interfaces |
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| 2 | |
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| 3 | !--------------------------------------------------------------------------------! |
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| 4 | ! This file is part of PALM. |
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| 5 | ! |
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| 6 | ! PALM is free software: you can redistribute it and/or modify it under the terms |
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| 7 | ! of the GNU General Public License as published by the Free Software Foundation, |
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| 8 | ! either version 3 of the License, or (at your option) any later version. |
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| 9 | ! |
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| 10 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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| 11 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
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| 12 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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| 13 | ! |
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| 14 | ! You should have received a copy of the GNU General Public License along with |
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| 15 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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| 16 | ! |
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[1310] | 17 | ! Copyright 1997-2014 Leibniz Universitaet Hannover |
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[1106] | 18 | !--------------------------------------------------------------------------------! |
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| 19 | ! |
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| 20 | ! Current revisions: |
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| 21 | ! ----------------- |
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[1375] | 22 | ! |
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| 23 | ! |
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[1321] | 24 | ! Former revisions: |
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| 25 | ! ----------------- |
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| 26 | ! $Id: cuda_fft_interfaces.f90 1375 2014-04-25 13:07:08Z witha $ |
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| 27 | ! |
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[1375] | 28 | ! 1374 2014-04-25 12:55:07Z raasch |
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| 29 | ! bugfix: missing module kinds added |
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| 30 | ! |
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[1321] | 31 | ! 1320 2014-03-20 08:40:49Z raasch |
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| 32 | ! Kind-parameters added to all INTEGER and REAL declaration statements, |
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[1320] | 33 | ! kinds are defined in new module kinds, |
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| 34 | ! old module precision_kind is removed, |
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| 35 | ! revision history before 2012 removed, |
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| 36 | ! comment fields (!:) to be used for variable explanations added to |
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| 37 | ! all variable declaration statements |
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[1106] | 38 | ! |
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[1225] | 39 | ! 1224 2013-09-16 07:27:23Z raasch |
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| 40 | ! dummy interface added to avoid compiler warnings |
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| 41 | ! |
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[1167] | 42 | ! 1166 2013-05-24 13:55:44Z raasch |
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| 43 | ! C_DOUBLE/COMPLEX reset to dpk, |
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| 44 | ! DEVICE attribut added to idata/odata arguments |
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| 45 | ! |
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[1154] | 46 | ! 1153 2013-05-10 14:33:08Z raasch |
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| 47 | ! code adjustment of data types for CUDA fft required by PGI 12.3 / CUDA 5.0 |
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| 48 | ! |
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[1112] | 49 | ! 1111 2013-03-08 23:54:10Z raasch |
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| 50 | ! idata and odata changed from 1d- to 3d-arrays |
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| 51 | ! |
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[1107] | 52 | ! 1106 2013-03-04 05:31:38Z raasch |
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| 53 | ! Initial revision |
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[1106] | 54 | ! |
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| 55 | ! Description: |
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| 56 | ! ------------ |
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| 57 | ! FORTRAN interfaces for the CUDA fft |
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| 58 | ! Routines for the fft along x and y (forward/backward) using the CUDA fft |
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| 59 | !--------------------------------------------------------------------------------! |
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| 60 | |
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| 61 | #if defined ( __cuda_fft ) |
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| 62 | |
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[1374] | 63 | USE kinds |
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| 64 | |
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[1320] | 65 | INTEGER(iwp) :: CUFFT_FORWARD = -1 !: |
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| 66 | INTEGER(iwp) :: CUFFT_INVERSE = 1 !: |
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| 67 | INTEGER(iwp) :: CUFFT_R2C = Z'2a' !: Real to Complex (interleaved) |
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| 68 | INTEGER(iwp) :: CUFFT_C2R = Z'2c' !: Complex (interleaved) to Real |
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| 69 | INTEGER(iwp) :: CUFFT_C2C = Z'29' !: Complex to Complex, interleaved |
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| 70 | INTEGER(iwp) :: CUFFT_D2Z = Z'6a' !: Double to Double-Complex |
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| 71 | INTEGER(iwp) :: CUFFT_Z2D = Z'6c' !: Double-Complex to Double |
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| 72 | INTEGER(iwp) :: CUFFT_Z2Z = Z'69' !: Double-Complex to Double-Complex |
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[1106] | 73 | |
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| 74 | PUBLIC |
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| 75 | |
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| 76 | |
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| 77 | ! |
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| 78 | !-- cufftPlan1d( cufftHandle *plan, int nx, cufftType type, int batch ) |
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| 79 | INTERFACE CUFFTPLAN1D |
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| 80 | |
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| 81 | SUBROUTINE CUFFTPLAN1D( plan, nx, type, batch ) bind( C, name='cufftPlan1d' ) |
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| 82 | |
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| 83 | USE ISO_C_BINDING |
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| 84 | |
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[1320] | 85 | INTEGER(C_INT) :: plan !: |
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| 86 | INTEGER(C_INT), value :: batch !: |
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| 87 | INTEGER(C_INT), value :: nx !: |
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| 88 | INTEGER(C_INT), value :: type !: |
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[1106] | 89 | END SUBROUTINE CUFFTPLAN1D |
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| 90 | |
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| 91 | END INTERFACE CUFFTPLAN1D |
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| 92 | |
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| 93 | ! |
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| 94 | !-- cufftDestroy( cufftHandle plan ) !!! remove later if not really needed !!! |
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| 95 | INTERFACE CUFFTDESTROY |
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| 96 | |
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| 97 | SUBROUTINE CUFFTDESTROY( plan ) bind( C, name='cufftDestroy' ) |
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| 98 | |
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| 99 | USE ISO_C_BINDING |
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| 100 | |
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[1166] | 101 | INTEGER(C_INT), VALUE :: plan |
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[1106] | 102 | |
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| 103 | END SUBROUTINE CUFFTDESTROY |
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| 104 | |
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| 105 | END INTERFACE CUFFTDESTROY |
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| 106 | |
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| 107 | |
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| 108 | INTERFACE CUFFTEXECZ2D |
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| 109 | |
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| 110 | SUBROUTINE CUFFTEXECZ2D( plan, idata, odata ) bind( C, name='cufftExecZ2D' ) |
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| 111 | |
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| 112 | USE ISO_C_BINDING |
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[1320] | 113 | USE kinds |
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[1106] | 114 | |
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[1320] | 115 | INTEGER(C_INT), VALUE :: plan !: |
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| 116 | COMPLEX(dp), DEVICE :: idata(:,:,:) !: |
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| 117 | REAL(dp), DEVICE :: odata(:,:,:) !: |
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[1106] | 118 | |
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| 119 | END SUBROUTINE CUFFTEXECZ2D |
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| 120 | |
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| 121 | END INTERFACE CUFFTEXECZ2D |
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| 122 | |
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| 123 | |
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| 124 | INTERFACE CUFFTEXECD2Z |
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| 125 | |
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| 126 | SUBROUTINE CUFFTEXECD2Z( plan, idata, odata ) bind( C, name='cufftExecD2Z' ) |
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| 127 | |
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| 128 | USE ISO_C_BINDING |
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[1320] | 129 | |
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| 130 | USE kinds |
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[1106] | 131 | |
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[1320] | 132 | INTEGER(C_INT), VALUE :: plan !: |
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| 133 | REAL(dp), DEVICE :: idata(:,:,:) !: |
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| 134 | COMPLEX(dp), DEVICE :: odata(:,:,:) !: |
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[1106] | 135 | |
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| 136 | END SUBROUTINE CUFFTEXECD2Z |
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| 137 | |
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| 138 | END INTERFACE CUFFTEXECD2Z |
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| 139 | |
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[1224] | 140 | #else |
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| 141 | |
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| 142 | ! |
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| 143 | !-- Dummy interface to avoid compiler warnings in case of no bublic objects |
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| 144 | !-- declared |
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| 145 | INTERFACE CUFFTdummy |
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| 146 | |
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| 147 | SUBROUTINE CUFFTdummy( dummy ) |
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[1320] | 148 | |
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| 149 | USE kinds |
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[1224] | 150 | |
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[1320] | 151 | REAL(wp) :: dummy !: |
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[1224] | 152 | |
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| 153 | END SUBROUTINE CUFFTdummy |
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| 154 | |
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| 155 | END INTERFACE CUFFTdummy |
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| 156 | |
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[1106] | 157 | #endif |
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[1224] | 158 | |
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[1106] | 159 | END MODULE cuda_fft_interfaces |
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