[3634] | 1 | !> @file cuda_fft_interfaces.f90 |
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[4559] | 2 | !--------------------------------------------------------------------------------------------------! |
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| 3 | ! This file is part of the PALM model system. |
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[3634] | 4 | ! |
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[4559] | 5 | ! PALM is free software: you can redistribute it and/or modify it under the terms of the GNU General |
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| 6 | ! Public License as published by the Free Software Foundation, either version 3 of the License, or |
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| 7 | ! (at your option) any later version. |
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[3634] | 8 | ! |
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[4559] | 9 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the |
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| 10 | ! implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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| 11 | ! Public License for more details. |
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[3634] | 12 | ! |
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[4559] | 13 | ! You should have received a copy of the GNU General Public License along with PALM. If not, see |
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| 14 | ! <http://www.gnu.org/licenses/>. |
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[3634] | 15 | ! |
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[4828] | 16 | ! Copyright 1997-2021 Leibniz Universitaet Hannover |
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[4559] | 17 | !--------------------------------------------------------------------------------------------------! |
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[3634] | 18 | ! |
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| 19 | ! Current revisions: |
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| 20 | ! ----------------- |
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| 21 | ! |
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| 22 | ! |
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| 23 | ! Former revisions: |
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| 24 | ! ----------------- |
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| 25 | ! $Id: cuda_fft_interfaces.f90 4828 2021-01-05 11:21:41Z scharf $ |
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[4559] | 26 | ! file re-formatted to follow the PALM coding standard |
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| 27 | ! |
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| 28 | ! 4360 2020-01-07 11:25:50Z suehring |
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[4182] | 29 | ! Corrected "Former revisions" section |
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[4559] | 30 | ! |
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[4182] | 31 | ! 3655 2019-01-07 16:51:22Z knoop |
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| 32 | ! 1683 2015-10-07 23:57:51Z knoop |
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[3634] | 33 | ! |
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[4182] | 34 | ! |
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[3634] | 35 | ! Description: |
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| 36 | ! ------------ |
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| 37 | !> FORTRAN interfaces for the CUDA fft |
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| 38 | !> Routines for the fft along x and y (forward/backward) using the CUDA fft |
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[4559] | 39 | !--------------------------------------------------------------------------------------------------! |
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[3634] | 40 | MODULE cuda_fft_interfaces |
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| 41 | |
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[4559] | 42 | |
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[3634] | 43 | #if defined ( __cuda_fft ) |
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| 44 | |
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| 45 | USE kinds |
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| 46 | |
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[4559] | 47 | INTEGER(iwp) :: CUFFT_C2C = Z'29' !< Complex to Complex, interleaved |
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| 48 | INTEGER(iwp) :: CUFFT_C2R = Z'2c' !< Complex (interleaved) to Real |
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| 49 | INTEGER(iwp) :: CUFFT_D2Z = Z'6a' !< Double to Double-Complex |
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[3634] | 50 | INTEGER(iwp) :: CUFFT_FORWARD = -1 !< |
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| 51 | INTEGER(iwp) :: CUFFT_INVERSE = 1 !< |
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| 52 | INTEGER(iwp) :: CUFFT_R2C = Z'2a' !< Real to Complex (interleaved) |
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| 53 | INTEGER(iwp) :: CUFFT_Z2D = Z'6c' !< Double-Complex to Double |
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| 54 | INTEGER(iwp) :: CUFFT_Z2Z = Z'69' !< Double-Complex to Double-Complex |
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| 55 | |
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| 56 | PUBLIC |
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| 57 | |
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| 58 | |
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| 59 | ! |
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| 60 | !-- cufftPlan1d( cufftHandle *plan, int nx, cufftType type, int batch ) |
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| 61 | INTERFACE CUFFTPLAN1D |
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| 62 | |
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[4559] | 63 | !--------------------------------------------------------------------------------------------------! |
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[3634] | 64 | ! Description: |
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| 65 | ! ------------ |
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| 66 | !> @todo Missing subroutine description. |
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[4559] | 67 | !--------------------------------------------------------------------------------------------------! |
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| 68 | SUBROUTINE CUFFTPLAN1D( plan, nx, type, batch ) BIND( C, name='cufftPlan1d' ) |
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[3634] | 69 | |
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| 70 | USE ISO_C_BINDING |
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| 71 | |
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[4559] | 72 | INTEGER(C_INT) :: plan !< |
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| 73 | INTEGER(C_INT), VALUE :: batch !< |
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| 74 | INTEGER(C_INT), VALUE :: nx !< |
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| 75 | INTEGER(C_INT), VALUE :: type !< |
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[3634] | 76 | END SUBROUTINE CUFFTPLAN1D |
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| 77 | |
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| 78 | END INTERFACE CUFFTPLAN1D |
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| 79 | |
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| 80 | ! |
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| 81 | !-- cufftDestroy( cufftHandle plan ) !!! remove later if not really needed !!! |
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| 82 | INTERFACE CUFFTDESTROY |
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| 83 | |
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[4559] | 84 | !--------------------------------------------------------------------------------------------------! |
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[3634] | 85 | ! Description: |
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| 86 | ! ------------ |
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| 87 | !> @todo Missing subroutine description. |
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[4559] | 88 | !--------------------------------------------------------------------------------------------------! |
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| 89 | SUBROUTINE CUFFTDESTROY( plan ) BIND( C, name='cufftDestroy' ) |
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[3634] | 90 | |
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| 91 | USE ISO_C_BINDING |
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| 92 | |
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| 93 | INTEGER(C_INT), VALUE :: plan |
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| 94 | |
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| 95 | END SUBROUTINE CUFFTDESTROY |
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| 96 | |
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| 97 | END INTERFACE CUFFTDESTROY |
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| 98 | |
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| 99 | |
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| 100 | INTERFACE CUFFTEXECZ2D |
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| 101 | |
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[4559] | 102 | !--------------------------------------------------------------------------------------------------! |
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[3634] | 103 | ! Description: |
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| 104 | ! ------------ |
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| 105 | !> @todo Missing subroutine description. |
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[4559] | 106 | !--------------------------------------------------------------------------------------------------! |
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| 107 | SUBROUTINE CUFFTEXECZ2D( plan, idata, odata ) BIND( C, name='cufftExecZ2D' ) |
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[3634] | 108 | |
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| 109 | USE ISO_C_BINDING |
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| 110 | USE kinds |
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| 111 | |
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[4559] | 112 | COMPLEX(dp), DEVICE :: idata(:,:,:) !< |
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| 113 | |
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[3634] | 114 | INTEGER(C_INT), VALUE :: plan !< |
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[4559] | 115 | |
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[3634] | 116 | REAL(dp), DEVICE :: odata(:,:,:) !< |
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| 117 | |
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| 118 | END SUBROUTINE CUFFTEXECZ2D |
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| 119 | |
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| 120 | END INTERFACE CUFFTEXECZ2D |
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| 121 | |
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| 122 | |
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| 123 | INTERFACE CUFFTEXECD2Z |
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| 124 | |
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[4559] | 125 | !--------------------------------------------------------------------------------------------------! |
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[3634] | 126 | ! Description: |
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| 127 | ! ------------ |
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| 128 | !> @todo Missing subroutine description. |
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[4559] | 129 | !--------------------------------------------------------------------------------------------------! |
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[3634] | 130 | SUBROUTINE CUFFTEXECD2Z( plan, idata, odata ) bind( C, name='cufftExecD2Z' ) |
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| 131 | |
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| 132 | USE ISO_C_BINDING |
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[4559] | 133 | |
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[3634] | 134 | USE kinds |
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| 135 | |
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[4559] | 136 | COMPLEX(dp), DEVICE :: odata(:,:,:) !< |
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| 137 | |
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[3634] | 138 | INTEGER(C_INT), VALUE :: plan !< |
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[4559] | 139 | |
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[3634] | 140 | REAL(dp), DEVICE :: idata(:,:,:) !< |
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| 141 | |
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| 142 | END SUBROUTINE CUFFTEXECD2Z |
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| 143 | |
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| 144 | END INTERFACE CUFFTEXECD2Z |
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| 145 | |
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| 146 | #else |
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| 147 | |
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| 148 | INTERFACE CUFFTdummy |
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| 149 | |
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[4559] | 150 | !--------------------------------------------------------------------------------------------------! |
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[3634] | 151 | ! Description: |
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| 152 | ! ------------ |
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[4559] | 153 | !> Dummy interface to avoid compiler warnings in case of no bublic objects declared. |
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| 154 | !--------------------------------------------------------------------------------------------------! |
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[3634] | 155 | SUBROUTINE CUFFTdummy( dummy ) |
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[4559] | 156 | |
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[3634] | 157 | USE kinds |
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| 158 | |
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| 159 | REAL(wp) :: dummy !< |
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| 160 | |
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| 161 | END SUBROUTINE CUFFTdummy |
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| 162 | |
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| 163 | END INTERFACE CUFFTdummy |
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| 164 | |
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| 165 | #endif |
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| 166 | |
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| 167 | END MODULE cuda_fft_interfaces |
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