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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17 | ! Copyright 1997-2014 Leibniz Universitaet Hannover |
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18 | !--------------------------------------------------------------------------------! |
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19 | ! |
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20 | ! Current revisions: |
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21 | ! ----------------- |
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22 | ! |
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23 | ! |
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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 letzel $ |
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27 | ! |
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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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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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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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38 | ! |
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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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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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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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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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52 | ! 1106 2013-03-04 05:31:38Z raasch |
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53 | ! Initial revision |
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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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63 | USE kinds |
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64 | |
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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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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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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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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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101 | INTEGER(C_INT), VALUE :: plan |
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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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113 | USE kinds |
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114 | |
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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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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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129 | |
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130 | USE kinds |
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131 | |
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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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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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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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148 | |
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149 | USE kinds |
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150 | |
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151 | REAL(wp) :: dummy !: |
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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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157 | #endif |
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158 | |
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159 | END MODULE cuda_fft_interfaces |
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