1 | !> @file init_pegrid.f90 |
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2 | !------------------------------------------------------------------------------! |
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3 | ! This file is part of PALM. |
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4 | ! |
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5 | ! PALM is free software: you can redistribute it and/or modify it under the |
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6 | ! terms of the GNU General Public License as published by the Free Software |
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7 | ! Foundation, either version 3 of the License, or (at your option) any later |
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8 | ! 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 1997-2017 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: init_pegrid.f90 2516 2017-10-04 11:03:04Z suehring $ |
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27 | ! Remove tabs |
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28 | ! |
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29 | ! 2514 2017-10-04 09:52:37Z suehring |
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30 | ! Redundant preprocessor directives removed |
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31 | ! |
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32 | ! 2372 2017-08-25 12:37:32Z sward |
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33 | ! Shifted cyclic boundary conditions implemented |
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34 | ! |
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35 | ! 2365 2017-08-21 14:59:59Z kanani |
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36 | ! Vertical nesting implemented (SadiqHuq) |
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37 | ! |
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38 | ! 2300 2017-06-29 13:31:14Z raasch |
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39 | ! host-specific settings removed |
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40 | ! |
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41 | ! 2298 2017-06-29 09:28:18Z raasch |
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42 | ! MPI2 related parts removed |
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43 | ! |
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44 | ! 2271 2017-06-09 12:34:55Z sward |
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45 | ! Error message changed |
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46 | ! |
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47 | ! 2259 2017-06-08 09:09:11Z gronemeier |
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48 | ! Implemented synthetic turbulence generator |
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49 | ! |
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50 | ! 2238 2017-05-31 16:49:16Z suehring |
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51 | ! Remove unnecessary module load of pmc_interface |
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52 | ! |
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53 | ! 2231 2017-05-30 16:44:33Z suehring |
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54 | ! |
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55 | ! 2200 2017-04-11 11:37:51Z suehring |
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56 | ! monotonic_adjustment removed |
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57 | ! |
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58 | ! 2197 2017-03-24 02:25:00Z raasch |
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59 | ! bugfix: do not allow odd values for nz at the coarsest grid level in case of |
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60 | ! optimized multigrid solver |
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61 | ! |
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62 | ! 2180 2017-03-17 13:33:05Z hellstea |
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63 | ! Checks to ensure (2178) that pdims match the grid dimensions in the |
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64 | ! automatic determination of pdims are canceled as unnecessary |
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65 | ! |
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66 | ! 2178 2017-03-17 11:07:39Z hellstea |
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67 | ! Checks to ensure that pdims match the grid dimensions are added in the |
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68 | ! automatic determination of pdims |
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69 | ! |
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70 | ! 2050 2016-11-08 15:00:55Z gronemeier |
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71 | ! Implement turbulent outflow condition |
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72 | ! |
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73 | ! 2000 2016-08-20 18:09:15Z knoop |
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74 | ! Forced header and separation lines into 80 columns |
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75 | ! |
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76 | ! 1968 2016-07-18 12:01:49Z suehring |
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77 | ! Extent MPI-datatypes for exchange of 2D-INTEGER arrays on coarser multigrid |
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78 | ! level |
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79 | ! |
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80 | ! 1964 2016-07-14 15:35:18Z hellstea |
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81 | ! Bugfix: erroneous setting of nest_bound_l/r/s/n = .TRUE. for vertical nesting mode removed. |
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82 | ! |
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83 | ! 1923 2016-05-31 16:37:07Z boeske |
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84 | ! Initial version of purely vertical nesting introduced. |
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85 | ! |
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86 | ! 1922 2016-05-31 16:36:08Z boeske |
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87 | ! Bugfix: array transposition checks restricted to cases if a fourier |
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88 | ! transform is used , removed unused variable nnx_z |
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89 | ! |
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90 | ! 1833 2016-04-07 14:23:03Z raasch |
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91 | ! spectra related variables moved to spectra_mod |
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92 | ! |
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93 | ! 1815 2016-04-06 13:49:59Z raasch |
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94 | ! cpp-directives for intel openmp bug removed |
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95 | ! |
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96 | ! 1804 2016-04-05 16:30:18Z maronga |
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97 | ! Removed code for parameter file check (__check) |
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98 | ! |
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99 | ! 1779 2016-03-03 08:01:28Z raasch |
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100 | ! changes regarding nested domain removed: virtual PE grid will be automatically |
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101 | ! calculated for nested runs too |
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102 | ! |
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103 | ! 1764 2016-02-28 12:45:19Z raasch |
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104 | ! cpp-statements for nesting removed |
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105 | ! |
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106 | ! 1762 2016-02-25 12:31:13Z hellstea |
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107 | ! Introduction of nested domain feature |
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108 | ! |
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109 | ! 1682 2015-10-07 23:56:08Z knoop |
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110 | ! Code annotations made doxygen readable |
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111 | ! |
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112 | ! 1677 2015-10-02 13:25:23Z boeske |
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113 | ! New MPI-data types for exchange of 3D integer arrays. |
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114 | ! |
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115 | ! 1575 2015-03-27 09:56:27Z raasch |
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116 | ! adjustments for psolver-queries, calculation of ngp_xz added |
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117 | ! |
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118 | ! 1565 2015-03-09 20:59:31Z suehring |
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119 | ! Refine if-clause for setting nbgp. |
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120 | ! |
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121 | ! 1557 2015-03-05 16:43:04Z suehring |
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122 | ! Adjustment for monotonic limiter |
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123 | ! |
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124 | ! 1468 2014-09-24 14:06:57Z maronga |
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125 | ! Adapted for use on up to 6-digit processor cores |
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126 | ! |
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127 | ! 1435 2014-07-21 10:37:02Z keck |
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128 | ! bugfix: added missing parameter coupling_mode_remote to ONLY-attribute |
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129 | ! |
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130 | ! 1402 2014-05-09 14:25:13Z raasch |
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131 | ! location messages modified |
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132 | ! |
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133 | ! 1384 2014-05-02 14:31:06Z raasch |
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134 | ! location messages added |
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135 | ! |
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136 | ! 1353 2014-04-08 15:21:23Z heinze |
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137 | ! REAL constants provided with KIND-attribute |
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138 | ! |
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139 | ! 1322 2014-03-20 16:38:49Z raasch |
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140 | ! REAL functions provided with KIND-attribute |
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141 | ! |
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142 | ! 1320 2014-03-20 08:40:49Z raasch |
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143 | ! ONLY-attribute added to USE-statements, |
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144 | ! kind-parameters added to all INTEGER and REAL declaration statements, |
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145 | ! kinds are defined in new module kinds, |
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146 | ! revision history before 2012 removed, |
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147 | ! comment fields (!:) to be used for variable explanations added to |
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148 | ! all variable declaration statements |
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149 | ! |
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150 | ! 1304 2014-03-12 10:29:42Z raasch |
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151 | ! bugfix: single core MPI runs missed some settings of transpose indices |
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152 | ! |
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153 | ! 1212 2013-08-15 08:46:27Z raasch |
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154 | ! error message for poisfft_hybrid removed |
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155 | ! |
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156 | ! 1159 2013-05-21 11:58:22Z fricke |
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157 | ! dirichlet/neumann and neumann/dirichlet removed |
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158 | ! |
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159 | ! 1139 2013-04-18 07:25:03Z raasch |
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160 | ! bugfix for calculating the id of the PE carrying the recycling plane |
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161 | ! |
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162 | ! 1111 2013-03-08 23:54:10Z raasch |
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163 | ! initialization of poisfft moved to module poisfft |
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164 | ! |
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165 | ! 1092 2013-02-02 11:24:22Z raasch |
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166 | ! unused variables removed |
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167 | ! |
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168 | ! 1056 2012-11-16 15:28:04Z raasch |
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169 | ! Indices for arrays n.._mg start from zero due to definition of arrays f2 and |
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170 | ! p2 as automatic arrays in recursive subroutine next_mg_level |
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171 | ! |
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172 | ! 1041 2012-11-06 02:36:29Z raasch |
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173 | ! a 2d virtual processor topology is used by default for all machines |
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174 | ! |
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175 | ! 1036 2012-10-22 13:43:42Z raasch |
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176 | ! code put under GPL (PALM 3.9) |
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177 | ! |
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178 | ! 1003 2012-09-14 14:35:53Z raasch |
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179 | ! subdomains must have identical size (grid matching = "match" removed) |
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180 | ! |
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181 | ! 1001 2012-09-13 14:08:46Z raasch |
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182 | ! all actions concerning upstream-spline-method removed |
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183 | ! |
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184 | ! 978 2012-08-09 08:28:32Z fricke |
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185 | ! dirichlet/neumann and neumann/dirichlet added |
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186 | ! nxlu and nysv are also calculated for inflow boundary |
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187 | ! |
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188 | ! 809 2012-01-30 13:32:58Z maronga |
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189 | ! Bugfix: replaced .AND. and .NOT. with && and ! in the preprocessor directives |
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190 | ! |
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191 | ! 807 2012-01-25 11:53:51Z maronga |
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192 | ! New cpp directive "__check" implemented which is used by check_namelist_files |
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193 | ! |
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194 | ! Revision 1.1 1997/07/24 11:15:09 raasch |
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195 | ! Initial revision |
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196 | ! |
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197 | ! |
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198 | ! Description: |
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199 | ! ------------ |
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200 | !> Determination of the virtual processor topology (if not prescribed by the |
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201 | !> user)and computation of the grid point number and array bounds of the local |
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202 | !> domains. |
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203 | !------------------------------------------------------------------------------! |
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204 | SUBROUTINE init_pegrid |
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205 | |
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206 | |
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207 | USE control_parameters, & |
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208 | ONLY: bc_lr, bc_ns, coupling_mode, coupling_mode_remote, & |
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209 | coupling_topology, gathered_size, grid_level, & |
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210 | grid_level_count, inflow_l, inflow_n, inflow_r, inflow_s, & |
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211 | io_blocks, io_group, maximum_grid_level, & |
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212 | maximum_parallel_io_streams, message_string, & |
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213 | mg_switch_to_pe0_level, momentum_advec, nest_bound_l, & |
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214 | nest_bound_n, nest_bound_r, nest_bound_s, nest_domain, neutral, & |
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215 | psolver, outflow_l, outflow_n, outflow_r, outflow_s, & |
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216 | outflow_source_plane, recycling_width, scalar_advec, & |
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217 | subdomain_size, turbulent_outflow, y_shift |
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218 | |
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219 | USE grid_variables, & |
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220 | ONLY: dx |
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221 | |
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222 | USE indices, & |
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223 | ONLY: mg_loc_ind, nbgp, nnx, nny, nnz, nx, nx_a, nx_o, nxl, nxl_mg, & |
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224 | nxlu, nxr, nxr_mg, ny, ny_a, ny_o, nyn, nyn_mg, nys, nys_mg, & |
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225 | nysv, nz, nzb, nzt, nzt_mg, wall_flags_1, wall_flags_2, & |
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226 | wall_flags_3, wall_flags_4, wall_flags_5, wall_flags_6, & |
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227 | wall_flags_7, wall_flags_8, wall_flags_9, wall_flags_10 |
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228 | |
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229 | USE kinds |
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230 | |
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231 | USE pegrid |
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232 | |
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233 | USE spectra_mod, & |
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234 | ONLY: calculate_spectra, dt_dosp |
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235 | |
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236 | USE synthetic_turbulence_generator_mod, & |
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237 | ONLY: use_synthetic_turbulence_generator |
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238 | |
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239 | USE transpose_indices, & |
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240 | ONLY: nxl_y, nxl_yd, nxl_z, nxr_y, nxr_yd, nxr_z, nyn_x, nyn_z, nys_x,& |
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241 | nys_z, nzb_x, nzb_y, nzb_yd, nzt_x, nzt_yd, nzt_y |
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242 | |
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243 | USE vertical_nesting_mod, & |
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244 | ONLY: vnested, vnest_init_pegrid_domain, vnest_init_pegrid_rank |
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245 | |
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246 | IMPLICIT NONE |
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247 | |
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248 | INTEGER(iwp) :: i !< |
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249 | INTEGER(iwp) :: id_inflow_l !< |
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250 | INTEGER(iwp) :: id_outflow_l !< local value of id_outflow |
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251 | INTEGER(iwp) :: id_outflow_source_l !< local value of id_outflow_source |
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252 | INTEGER(iwp) :: id_recycling_l !< |
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253 | INTEGER(iwp) :: ind(5) !< |
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254 | INTEGER(iwp) :: j !< |
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255 | INTEGER(iwp) :: k !< |
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256 | INTEGER(iwp) :: maximum_grid_level_l !< |
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257 | INTEGER(iwp) :: mg_levels_x !< |
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258 | INTEGER(iwp) :: mg_levels_y !< |
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259 | INTEGER(iwp) :: mg_levels_z !< |
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260 | INTEGER(iwp) :: mg_switch_to_pe0_level_l !< |
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261 | INTEGER(iwp) :: nnx_y !< |
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262 | INTEGER(iwp) :: nnx_z !< |
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263 | INTEGER(iwp) :: nny_x !< |
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264 | INTEGER(iwp) :: nny_z !< |
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265 | INTEGER(iwp) :: nnz_x !< |
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266 | INTEGER(iwp) :: nnz_y !< |
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267 | INTEGER(iwp) :: numproc_sqr !< |
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268 | INTEGER(iwp) :: nxl_l !< |
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269 | INTEGER(iwp) :: nxr_l !< |
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270 | INTEGER(iwp) :: nyn_l !< |
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271 | INTEGER(iwp) :: nys_l !< |
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272 | INTEGER(iwp) :: nzb_l !< |
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273 | INTEGER(iwp) :: nzt_l !< |
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274 | INTEGER(iwp) :: omp_get_num_threads !< |
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275 | |
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276 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ind_all !< |
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277 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: nxlf !< |
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278 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: nxrf !< |
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279 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: nynf !< |
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280 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: nysf !< |
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281 | |
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282 | INTEGER(iwp), DIMENSION(2) :: pdims_remote !< |
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283 | INTEGER(iwp) :: lcoord(2) !< PE coordinates of left neighbor along x and y |
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284 | INTEGER(iwp) :: rcoord(2) !< PE coordinates of right neighbor along x and y |
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285 | |
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286 | ! |
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287 | !-- Get the number of OpenMP threads |
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288 | !$OMP PARALLEL |
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289 | !$ threads_per_task = omp_get_num_threads() |
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290 | !$OMP END PARALLEL |
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291 | |
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292 | |
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293 | #if defined( __parallel ) |
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294 | |
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295 | CALL location_message( 'creating virtual PE grids + MPI derived data types', & |
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296 | .FALSE. ) |
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297 | |
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298 | ! |
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299 | !-- Determine the processor topology or check it, if prescribed by the user |
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300 | IF ( npex == -1 .AND. npey == -1 ) THEN |
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301 | |
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302 | ! |
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303 | !-- Automatic determination of the topology |
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304 | numproc_sqr = SQRT( REAL( numprocs, KIND=wp ) ) |
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305 | pdims(1) = MAX( numproc_sqr , 1 ) |
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306 | DO WHILE ( MOD( numprocs , pdims(1) ) /= 0 ) |
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307 | pdims(1) = pdims(1) - 1 |
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308 | ENDDO |
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309 | pdims(2) = numprocs / pdims(1) |
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310 | |
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311 | ELSEIF ( npex /= -1 .AND. npey /= -1 ) THEN |
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312 | |
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313 | ! |
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314 | !-- Prescribed by user. Number of processors on the prescribed topology |
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315 | !-- must be equal to the number of PEs available to the job |
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316 | IF ( ( npex * npey ) /= numprocs ) THEN |
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317 | WRITE( message_string, * ) 'number of PEs of the prescribed ', & |
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318 | 'topology (', npex*npey,') does not match & the number of ', & |
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319 | 'PEs available to the job (', numprocs, ')' |
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320 | CALL message( 'init_pegrid', 'PA0221', 1, 2, 0, 6, 0 ) |
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321 | ENDIF |
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322 | pdims(1) = npex |
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323 | pdims(2) = npey |
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324 | |
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325 | ELSE |
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326 | ! |
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327 | !-- If the processor topology is prescribed by the user, the number of |
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328 | !-- PEs must be given in both directions |
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329 | message_string = 'if the processor topology is prescribed by th' // & |
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330 | 'e user& both values of "npex" and "npey" must be given' // & |
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331 | ' in the &NAMELIST-parameter file' |
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332 | CALL message( 'init_pegrid', 'PA0222', 1, 2, 0, 6, 0 ) |
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333 | |
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334 | ENDIF |
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335 | |
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336 | ! |
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337 | !-- If necessary, set horizontal boundary conditions to non-cyclic |
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338 | IF ( bc_lr /= 'cyclic' ) cyclic(1) = .FALSE. |
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339 | IF ( bc_ns /= 'cyclic' ) cyclic(2) = .FALSE. |
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340 | |
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341 | |
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342 | ! |
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343 | !-- Create the virtual processor grid |
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344 | CALL MPI_CART_CREATE( comm_palm, ndim, pdims, cyclic, reorder, & |
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345 | comm2d, ierr ) |
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346 | CALL MPI_COMM_RANK( comm2d, myid, ierr ) |
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347 | WRITE (myid_char,'(''_'',I6.6)') myid |
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348 | |
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349 | CALL MPI_CART_COORDS( comm2d, myid, ndim, pcoord, ierr ) |
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350 | CALL MPI_CART_SHIFT( comm2d, 0, 1, pleft, pright, ierr ) |
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351 | CALL MPI_CART_SHIFT( comm2d, 1, 1, psouth, pnorth, ierr ) |
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352 | |
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353 | ! |
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354 | !-- In case of cyclic boundary conditions, a y-shift at the boundaries in |
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355 | !-- x-direction can be introduced via parameter y_shift. The shift is done |
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356 | !-- by modifying the processor grid in such a way that processors located |
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357 | !-- at the x-boundary communicate across it to processors with y-coordinate |
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358 | !-- shifted by y_shift relative to their own. This feature can not be used |
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359 | !-- in combination with an fft pressure solver. It has been implemented to |
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360 | !-- counter the effect of streak structures in case of cyclic boundary |
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361 | !-- conditions. For a description of these see Munters |
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362 | !-- (2016; dx.doi.org/10.1063/1.4941912) |
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363 | !-- |
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364 | !-- Get coordinates of left and right neighbor on PE grid |
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365 | IF ( y_shift /= 0 ) THEN |
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366 | |
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367 | IF ( bc_lr /= 'cyclic' .OR. bc_ns /= 'cyclic' ) THEN |
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368 | message_string = 'y_shift /= 0 is only allowed for cyclic ' // & |
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369 | 'boundary conditions in both directions ' |
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370 | CALL message( 'check_parameters', 'PA0467', 1, 2, 0, 6, 0 ) |
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371 | ENDIF |
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372 | IF ( TRIM( psolver ) /= 'multigrid' .AND. & |
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373 | TRIM( psolver ) /= 'multigrid_noopt') & |
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374 | THEN |
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375 | message_string = 'y_shift /= 0 requires a multigrid pressure solver ' |
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376 | CALL message( 'check_parameters', 'PA0468', 1, 2, 0, 6, 0 ) |
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377 | ENDIF |
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378 | |
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379 | CALL MPI_CART_COORDS( comm2d, pright, ndim, rcoord, ierr ) |
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380 | CALL MPI_CART_COORDS( comm2d, pleft, ndim, lcoord, ierr ) |
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381 | |
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382 | ! |
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383 | !-- If the x(y)-coordinate of the right (left) neighbor is smaller (greater) |
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384 | !-- than that of the calling process, then the calling process is located on |
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385 | !-- the right (left) boundary of the processor grid. In that case, |
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386 | !-- the y-coordinate of that neighbor is increased (decreased) by y_shift. |
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387 | !-- The rank of the process with that coordinate is then inquired and the |
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388 | !-- neighbor rank for MPI_SENDRECV, pright (pleft) is set to it. |
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389 | !-- In this way, the calling process receives a new right (left) neighbor |
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390 | !-- for all future MPI_SENDRECV calls. That neighbor has a y-coordinate |
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391 | !-- of y+(-)y_shift, where y is the original right (left) neighbor's |
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392 | !-- y-coordinate. The modulo-operation ensures that if the neighbor's |
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393 | !-- y-coordinate exceeds the grid-boundary, it will be relocated to |
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394 | !-- the opposite part of the grid cyclicly. |
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395 | IF ( rcoord(1) < pcoord(1) ) THEN |
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396 | rcoord(2) = MODULO( rcoord(2) + y_shift, pdims(2) ) |
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397 | CALL MPI_CART_RANK( comm2d, rcoord, pright, ierr ) |
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398 | ENDIF |
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399 | |
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400 | IF ( lcoord(1) > pcoord(1) ) THEN |
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401 | lcoord(2) = MODULO( lcoord(2) - y_shift, pdims(2) ) |
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402 | CALL MPI_CART_RANK( comm2d, lcoord, pleft, ierr ) |
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403 | ENDIF |
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404 | ENDIF |
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405 | |
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406 | ! |
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407 | !-- Vertical nesting: store four lists that identify partner ranks to exchange |
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408 | !-- data |
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409 | IF ( vnested ) CALL vnest_init_pegrid_rank |
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410 | |
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411 | ! |
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412 | !-- Determine sub-topologies for transpositions |
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413 | !-- Transposition from z to x: |
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414 | remain_dims(1) = .TRUE. |
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415 | remain_dims(2) = .FALSE. |
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416 | CALL MPI_CART_SUB( comm2d, remain_dims, comm1dx, ierr ) |
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417 | CALL MPI_COMM_RANK( comm1dx, myidx, ierr ) |
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418 | ! |
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419 | !-- Transposition from x to y |
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420 | remain_dims(1) = .FALSE. |
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421 | remain_dims(2) = .TRUE. |
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422 | CALL MPI_CART_SUB( comm2d, remain_dims, comm1dy, ierr ) |
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423 | CALL MPI_COMM_RANK( comm1dy, myidy, ierr ) |
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424 | |
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425 | |
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426 | ! |
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427 | !-- Calculate array bounds along x-direction for every PE. |
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428 | ALLOCATE( nxlf(0:pdims(1)-1), nxrf(0:pdims(1)-1), nynf(0:pdims(2)-1), & |
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429 | nysf(0:pdims(2)-1) ) |
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430 | |
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431 | IF ( MOD( nx+1 , pdims(1) ) /= 0 ) THEN |
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432 | WRITE( message_string, * ) 'x-direction: gridpoint number (',nx+1,') ',& |
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433 | 'is not an& integral divisor of the number ', & |
---|
434 | 'processors (', pdims(1),')' |
---|
435 | CALL message( 'init_pegrid', 'PA0225', 1, 2, 0, 6, 0 ) |
---|
436 | ELSE |
---|
437 | nnx = ( nx + 1 ) / pdims(1) |
---|
438 | IF ( nnx*pdims(1) - ( nx + 1) > nnx ) THEN |
---|
439 | WRITE( message_string, * ) 'x-direction: nx does not match the', & |
---|
440 | 'requirements given by the number of PEs &used', & |
---|
441 | '& please use nx = ', nx - ( pdims(1) - ( nnx*pdims(1) & |
---|
442 | - ( nx + 1 ) ) ), ' instead of nx =', nx |
---|
443 | CALL message( 'init_pegrid', 'PA0226', 1, 2, 0, 6, 0 ) |
---|
444 | ENDIF |
---|
445 | ENDIF |
---|
446 | |
---|
447 | ! |
---|
448 | !-- Left and right array bounds, number of gridpoints |
---|
449 | DO i = 0, pdims(1)-1 |
---|
450 | nxlf(i) = i * nnx |
---|
451 | nxrf(i) = ( i + 1 ) * nnx - 1 |
---|
452 | ENDDO |
---|
453 | |
---|
454 | ! |
---|
455 | !-- Calculate array bounds in y-direction for every PE. |
---|
456 | IF ( MOD( ny+1 , pdims(2) ) /= 0 ) THEN |
---|
457 | WRITE( message_string, * ) 'y-direction: gridpoint number (',ny+1,') ', & |
---|
458 | 'is not an& integral divisor of the number of', & |
---|
459 | 'processors (', pdims(2),')' |
---|
460 | CALL message( 'init_pegrid', 'PA0227', 1, 2, 0, 6, 0 ) |
---|
461 | ELSE |
---|
462 | nny = ( ny + 1 ) / pdims(2) |
---|
463 | IF ( nny*pdims(2) - ( ny + 1) > nny ) THEN |
---|
464 | WRITE( message_string, * ) 'y-direction: ny does not match the', & |
---|
465 | 'requirements given by the number of PEs &used ', & |
---|
466 | '& please use ny = ', ny - ( pdims(2) - ( nnx*pdims(2) & |
---|
467 | - ( ny + 1 ) ) ), ' instead of ny =', ny |
---|
468 | CALL message( 'init_pegrid', 'PA0228', 1, 2, 0, 6, 0 ) |
---|
469 | ENDIF |
---|
470 | ENDIF |
---|
471 | |
---|
472 | ! |
---|
473 | !-- South and north array bounds |
---|
474 | DO j = 0, pdims(2)-1 |
---|
475 | nysf(j) = j * nny |
---|
476 | nynf(j) = ( j + 1 ) * nny - 1 |
---|
477 | ENDDO |
---|
478 | |
---|
479 | ! |
---|
480 | !-- Local array bounds of the respective PEs |
---|
481 | nxl = nxlf(pcoord(1)) |
---|
482 | nxr = nxrf(pcoord(1)) |
---|
483 | nys = nysf(pcoord(2)) |
---|
484 | nyn = nynf(pcoord(2)) |
---|
485 | nzb = 0 |
---|
486 | nzt = nz |
---|
487 | nnz = nz |
---|
488 | |
---|
489 | ! |
---|
490 | !-- Set switches to define if the PE is situated at the border of the virtual |
---|
491 | !-- processor grid |
---|
492 | IF ( nxl == 0 ) left_border_pe = .TRUE. |
---|
493 | IF ( nxr == nx ) right_border_pe = .TRUE. |
---|
494 | IF ( nys == 0 ) south_border_pe = .TRUE. |
---|
495 | IF ( nyn == ny ) north_border_pe = .TRUE. |
---|
496 | |
---|
497 | ! |
---|
498 | !-- Calculate array bounds and gridpoint numbers for the transposed arrays |
---|
499 | !-- (needed in the pressure solver) |
---|
500 | !-- For the transposed arrays, cyclic boundaries as well as top and bottom |
---|
501 | !-- boundaries are omitted, because they are obstructive to the transposition |
---|
502 | |
---|
503 | ! |
---|
504 | !-- 1. transposition z --> x |
---|
505 | !-- This transposition is not neccessary in case of a 1d-decomposition along x |
---|
506 | IF ( psolver == 'poisfft' .OR. calculate_spectra .OR. & |
---|
507 | use_synthetic_turbulence_generator ) THEN |
---|
508 | |
---|
509 | IF ( pdims(2) /= 1 ) THEN |
---|
510 | IF ( MOD( nz , pdims(1) ) /= 0 ) THEN |
---|
511 | WRITE( message_string, * ) 'transposition z --> x:', & |
---|
512 | '&nz=',nz,' is not an integral divisior of pdims(1)=', & |
---|
513 | pdims(1) |
---|
514 | CALL message( 'init_pegrid', 'PA0230', 1, 2, 0, 6, 0 ) |
---|
515 | ENDIF |
---|
516 | ENDIF |
---|
517 | |
---|
518 | nys_x = nys |
---|
519 | nyn_x = nyn |
---|
520 | nny_x = nny |
---|
521 | nnz_x = nz / pdims(1) |
---|
522 | nzb_x = 1 + myidx * nnz_x |
---|
523 | nzt_x = ( myidx + 1 ) * nnz_x |
---|
524 | sendrecvcount_zx = nnx * nny * nnz_x |
---|
525 | |
---|
526 | ENDIF |
---|
527 | |
---|
528 | |
---|
529 | IF ( psolver == 'poisfft' ) THEN |
---|
530 | ! |
---|
531 | !-- 2. transposition x --> y |
---|
532 | IF ( MOD( nx+1 , pdims(2) ) /= 0 ) THEN |
---|
533 | WRITE( message_string, * ) 'transposition x --> y:', & |
---|
534 | '&nx+1=',nx+1,' is not an integral divisor of ', & |
---|
535 | 'pdims(2)=',pdims(2) |
---|
536 | CALL message( 'init_pegrid', 'PA0231', 1, 2, 0, 6, 0 ) |
---|
537 | ENDIF |
---|
538 | |
---|
539 | nnz_y = nnz_x |
---|
540 | nzb_y = nzb_x |
---|
541 | nzt_y = nzt_x |
---|
542 | nnx_y = (nx+1) / pdims(2) |
---|
543 | nxl_y = myidy * nnx_y |
---|
544 | nxr_y = ( myidy + 1 ) * nnx_y - 1 |
---|
545 | sendrecvcount_xy = nnx_y * nny_x * nnz_y |
---|
546 | ! |
---|
547 | !-- 3. transposition y --> z |
---|
548 | !-- (ELSE: x --> y in case of 1D-decomposition along x) |
---|
549 | nxl_z = nxl_y |
---|
550 | nxr_z = nxr_y |
---|
551 | nny_z = (ny+1) / pdims(1) |
---|
552 | nys_z = myidx * nny_z |
---|
553 | nyn_z = ( myidx + 1 ) * nny_z - 1 |
---|
554 | sendrecvcount_yz = nnx_y * nny_z * nnz_y |
---|
555 | |
---|
556 | IF ( pdims(2) /= 1 ) THEN |
---|
557 | ! |
---|
558 | !-- y --> z |
---|
559 | !-- This transposition is not neccessary in case of a 1d-decomposition |
---|
560 | !-- along x, except that the uptream-spline method is switched on |
---|
561 | IF ( MOD( ny+1 , pdims(1) ) /= 0 ) THEN |
---|
562 | WRITE( message_string, * ) 'transposition y --> z:', & |
---|
563 | '& ny+1=',ny+1,' is not an integral divisor of',& |
---|
564 | ' pdims(1)=',pdims(1) |
---|
565 | CALL message( 'init_pegrid', 'PA0232', 1, 2, 0, 6, 0 ) |
---|
566 | ENDIF |
---|
567 | |
---|
568 | ELSE |
---|
569 | ! |
---|
570 | !-- x --> y |
---|
571 | !-- This condition must be fulfilled for a 1D-decomposition along x |
---|
572 | IF ( MOD( ny+1 , pdims(1) ) /= 0 ) THEN |
---|
573 | WRITE( message_string, * ) 'transposition x --> y:', & |
---|
574 | '& ny+1=',ny+1,' is not an integral divisor of',& |
---|
575 | ' pdims(1)=',pdims(1) |
---|
576 | CALL message( 'init_pegrid', 'PA0233', 1, 2, 0, 6, 0 ) |
---|
577 | ENDIF |
---|
578 | |
---|
579 | ENDIF |
---|
580 | |
---|
581 | ENDIF |
---|
582 | |
---|
583 | ! |
---|
584 | !-- Indices for direct transpositions z --> y (used for calculating spectra) |
---|
585 | IF ( calculate_spectra ) THEN |
---|
586 | IF ( MOD( nz, pdims(2) ) /= 0 ) THEN |
---|
587 | WRITE( message_string, * ) 'direct transposition z --> y (needed ', & |
---|
588 | 'for spectra):& nz=',nz,' is not an integral divisor of ', & |
---|
589 | 'pdims(2)=',pdims(2) |
---|
590 | CALL message( 'init_pegrid', 'PA0234', 1, 2, 0, 6, 0 ) |
---|
591 | ELSE |
---|
592 | nxl_yd = nxl |
---|
593 | nxr_yd = nxr |
---|
594 | nzb_yd = 1 + myidy * ( nz / pdims(2) ) |
---|
595 | nzt_yd = ( myidy + 1 ) * ( nz / pdims(2) ) |
---|
596 | sendrecvcount_zyd = nnx * nny * ( nz / pdims(2) ) |
---|
597 | ENDIF |
---|
598 | ENDIF |
---|
599 | |
---|
600 | IF ( psolver == 'poisfft' .OR. calculate_spectra ) THEN |
---|
601 | ! |
---|
602 | !-- Indices for direct transpositions y --> x |
---|
603 | !-- (they are only possible in case of a 1d-decomposition along x) |
---|
604 | IF ( pdims(2) == 1 ) THEN |
---|
605 | nny_x = nny / pdims(1) |
---|
606 | nys_x = myid * nny_x |
---|
607 | nyn_x = ( myid + 1 ) * nny_x - 1 |
---|
608 | nzb_x = 1 |
---|
609 | nzt_x = nz |
---|
610 | sendrecvcount_xy = nnx * nny_x * nz |
---|
611 | ENDIF |
---|
612 | |
---|
613 | ENDIF |
---|
614 | |
---|
615 | IF ( psolver == 'poisfft' ) THEN |
---|
616 | ! |
---|
617 | !-- Indices for direct transpositions x --> y |
---|
618 | !-- (they are only possible in case of a 1d-decomposition along y) |
---|
619 | IF ( pdims(1) == 1 ) THEN |
---|
620 | nnx_y = nnx / pdims(2) |
---|
621 | nxl_y = myid * nnx_y |
---|
622 | nxr_y = ( myid + 1 ) * nnx_y - 1 |
---|
623 | nzb_y = 1 |
---|
624 | nzt_y = nz |
---|
625 | sendrecvcount_xy = nnx_y * nny * nz |
---|
626 | ENDIF |
---|
627 | |
---|
628 | ENDIF |
---|
629 | |
---|
630 | ! |
---|
631 | !-- Arrays for storing the array bounds are needed any more |
---|
632 | DEALLOCATE( nxlf , nxrf , nynf , nysf ) |
---|
633 | |
---|
634 | |
---|
635 | ! |
---|
636 | !-- Collect index bounds from other PEs (to be written to restart file later) |
---|
637 | ALLOCATE( hor_index_bounds(4,0:numprocs-1) ) |
---|
638 | |
---|
639 | IF ( myid == 0 ) THEN |
---|
640 | |
---|
641 | hor_index_bounds(1,0) = nxl |
---|
642 | hor_index_bounds(2,0) = nxr |
---|
643 | hor_index_bounds(3,0) = nys |
---|
644 | hor_index_bounds(4,0) = nyn |
---|
645 | |
---|
646 | ! |
---|
647 | !-- Receive data from all other PEs |
---|
648 | DO i = 1, numprocs-1 |
---|
649 | CALL MPI_RECV( ibuf, 4, MPI_INTEGER, i, MPI_ANY_TAG, comm2d, status, & |
---|
650 | ierr ) |
---|
651 | hor_index_bounds(:,i) = ibuf(1:4) |
---|
652 | ENDDO |
---|
653 | |
---|
654 | ELSE |
---|
655 | ! |
---|
656 | !-- Send index bounds to PE0 |
---|
657 | ibuf(1) = nxl |
---|
658 | ibuf(2) = nxr |
---|
659 | ibuf(3) = nys |
---|
660 | ibuf(4) = nyn |
---|
661 | CALL MPI_SEND( ibuf, 4, MPI_INTEGER, 0, myid, comm2d, ierr ) |
---|
662 | |
---|
663 | ENDIF |
---|
664 | |
---|
665 | |
---|
666 | #if defined( __print ) |
---|
667 | ! |
---|
668 | !-- Control output |
---|
669 | IF ( myid == 0 ) THEN |
---|
670 | PRINT*, '*** processor topology ***' |
---|
671 | PRINT*, ' ' |
---|
672 | PRINT*, 'myid pcoord left right south north idx idy nxl: nxr',& |
---|
673 | &' nys: nyn' |
---|
674 | PRINT*, '------------------------------------------------------------',& |
---|
675 | &'-----------' |
---|
676 | WRITE (*,1000) 0, pcoord(1), pcoord(2), pleft, pright, psouth, pnorth, & |
---|
677 | myidx, myidy, nxl, nxr, nys, nyn |
---|
678 | 1000 FORMAT (I4,2X,'(',I3,',',I3,')',3X,I4,2X,I4,3X,I4,2X,I4,2X,I3,1X,I3, & |
---|
679 | 2(2X,I4,':',I4)) |
---|
680 | |
---|
681 | ! |
---|
682 | !-- Receive data from the other PEs |
---|
683 | DO i = 1,numprocs-1 |
---|
684 | CALL MPI_RECV( ibuf, 12, MPI_INTEGER, i, MPI_ANY_TAG, comm2d, status, & |
---|
685 | ierr ) |
---|
686 | WRITE (*,1000) i, ( ibuf(j) , j = 1,12 ) |
---|
687 | ENDDO |
---|
688 | ELSE |
---|
689 | |
---|
690 | ! |
---|
691 | !-- Send data to PE0 |
---|
692 | ibuf(1) = pcoord(1); ibuf(2) = pcoord(2); ibuf(3) = pleft |
---|
693 | ibuf(4) = pright; ibuf(5) = psouth; ibuf(6) = pnorth; ibuf(7) = myidx |
---|
694 | ibuf(8) = myidy; ibuf(9) = nxl; ibuf(10) = nxr; ibuf(11) = nys |
---|
695 | ibuf(12) = nyn |
---|
696 | CALL MPI_SEND( ibuf, 12, MPI_INTEGER, 0, myid, comm2d, ierr ) |
---|
697 | ENDIF |
---|
698 | #endif |
---|
699 | |
---|
700 | |
---|
701 | ! |
---|
702 | !-- Determine the number of ghost point layers |
---|
703 | IF ( ( scalar_advec == 'ws-scheme' .AND. .NOT. neutral ) .OR. & |
---|
704 | momentum_advec == 'ws-scheme' ) THEN |
---|
705 | nbgp = 3 |
---|
706 | ELSE |
---|
707 | nbgp = 1 |
---|
708 | ENDIF |
---|
709 | |
---|
710 | ! |
---|
711 | !-- Create a new MPI derived datatype for the exchange of surface (xy) data, |
---|
712 | !-- which is needed for coupled atmosphere-ocean runs. |
---|
713 | !-- First, calculate number of grid points of an xy-plane. |
---|
714 | ngp_xy = ( nxr - nxl + 1 + 2 * nbgp ) * ( nyn - nys + 1 + 2 * nbgp ) |
---|
715 | CALL MPI_TYPE_VECTOR( ngp_xy, 1, nzt-nzb+2, MPI_REAL, type_xy, ierr ) |
---|
716 | CALL MPI_TYPE_COMMIT( type_xy, ierr ) |
---|
717 | |
---|
718 | IF ( TRIM( coupling_mode ) /= 'uncoupled' .AND. .NOT. vnested ) THEN |
---|
719 | |
---|
720 | ! |
---|
721 | !-- Pass the number of grid points of the atmosphere model to |
---|
722 | !-- the ocean model and vice versa |
---|
723 | IF ( coupling_mode == 'atmosphere_to_ocean' ) THEN |
---|
724 | |
---|
725 | nx_a = nx |
---|
726 | ny_a = ny |
---|
727 | |
---|
728 | IF ( myid == 0 ) THEN |
---|
729 | |
---|
730 | CALL MPI_SEND( nx_a, 1, MPI_INTEGER, numprocs, 1, comm_inter, & |
---|
731 | ierr ) |
---|
732 | CALL MPI_SEND( ny_a, 1, MPI_INTEGER, numprocs, 2, comm_inter, & |
---|
733 | ierr ) |
---|
734 | CALL MPI_SEND( pdims, 2, MPI_INTEGER, numprocs, 3, comm_inter, & |
---|
735 | ierr ) |
---|
736 | CALL MPI_RECV( nx_o, 1, MPI_INTEGER, numprocs, 4, comm_inter, & |
---|
737 | status, ierr ) |
---|
738 | CALL MPI_RECV( ny_o, 1, MPI_INTEGER, numprocs, 5, comm_inter, & |
---|
739 | status, ierr ) |
---|
740 | CALL MPI_RECV( pdims_remote, 2, MPI_INTEGER, numprocs, 6, & |
---|
741 | comm_inter, status, ierr ) |
---|
742 | ENDIF |
---|
743 | |
---|
744 | CALL MPI_BCAST( nx_o, 1, MPI_INTEGER, 0, comm2d, ierr ) |
---|
745 | CALL MPI_BCAST( ny_o, 1, MPI_INTEGER, 0, comm2d, ierr ) |
---|
746 | CALL MPI_BCAST( pdims_remote, 2, MPI_INTEGER, 0, comm2d, ierr ) |
---|
747 | |
---|
748 | ELSEIF ( coupling_mode == 'ocean_to_atmosphere' ) THEN |
---|
749 | |
---|
750 | nx_o = nx |
---|
751 | ny_o = ny |
---|
752 | |
---|
753 | IF ( myid == 0 ) THEN |
---|
754 | |
---|
755 | CALL MPI_RECV( nx_a, 1, MPI_INTEGER, 0, 1, comm_inter, status, & |
---|
756 | ierr ) |
---|
757 | CALL MPI_RECV( ny_a, 1, MPI_INTEGER, 0, 2, comm_inter, status, & |
---|
758 | ierr ) |
---|
759 | CALL MPI_RECV( pdims_remote, 2, MPI_INTEGER, 0, 3, comm_inter, & |
---|
760 | status, ierr ) |
---|
761 | CALL MPI_SEND( nx_o, 1, MPI_INTEGER, 0, 4, comm_inter, ierr ) |
---|
762 | CALL MPI_SEND( ny_o, 1, MPI_INTEGER, 0, 5, comm_inter, ierr ) |
---|
763 | CALL MPI_SEND( pdims, 2, MPI_INTEGER, 0, 6, comm_inter, ierr ) |
---|
764 | ENDIF |
---|
765 | |
---|
766 | CALL MPI_BCAST( nx_a, 1, MPI_INTEGER, 0, comm2d, ierr) |
---|
767 | CALL MPI_BCAST( ny_a, 1, MPI_INTEGER, 0, comm2d, ierr) |
---|
768 | CALL MPI_BCAST( pdims_remote, 2, MPI_INTEGER, 0, comm2d, ierr) |
---|
769 | |
---|
770 | ENDIF |
---|
771 | |
---|
772 | ngp_a = ( nx_a+1 + 2 * nbgp ) * ( ny_a+1 + 2 * nbgp ) |
---|
773 | ngp_o = ( nx_o+1 + 2 * nbgp ) * ( ny_o+1 + 2 * nbgp ) |
---|
774 | |
---|
775 | ! |
---|
776 | !-- Determine if the horizontal grid and the number of PEs in ocean and |
---|
777 | !-- atmosphere is same or not |
---|
778 | IF ( nx_o == nx_a .AND. ny_o == ny_a .AND. & |
---|
779 | pdims(1) == pdims_remote(1) .AND. pdims(2) == pdims_remote(2) ) & |
---|
780 | THEN |
---|
781 | coupling_topology = 0 |
---|
782 | ELSE |
---|
783 | coupling_topology = 1 |
---|
784 | ENDIF |
---|
785 | |
---|
786 | ! |
---|
787 | !-- Determine the target PEs for the exchange between ocean and |
---|
788 | !-- atmosphere (comm2d) |
---|
789 | IF ( coupling_topology == 0 ) THEN |
---|
790 | ! |
---|
791 | !-- In case of identical topologies, every atmosphere PE has exactly one |
---|
792 | !-- ocean PE counterpart and vice versa |
---|
793 | IF ( TRIM( coupling_mode ) == 'atmosphere_to_ocean' ) THEN |
---|
794 | target_id = myid + numprocs |
---|
795 | ELSE |
---|
796 | target_id = myid |
---|
797 | ENDIF |
---|
798 | |
---|
799 | ELSE |
---|
800 | ! |
---|
801 | !-- In case of nonequivalent topology in ocean and atmosphere only for |
---|
802 | !-- PE0 in ocean and PE0 in atmosphere a target_id is needed, since |
---|
803 | !-- data echxchange between ocean and atmosphere will be done only |
---|
804 | !-- between these PEs. |
---|
805 | IF ( myid == 0 ) THEN |
---|
806 | |
---|
807 | IF ( TRIM( coupling_mode ) == 'atmosphere_to_ocean' ) THEN |
---|
808 | target_id = numprocs |
---|
809 | ELSE |
---|
810 | target_id = 0 |
---|
811 | ENDIF |
---|
812 | |
---|
813 | ENDIF |
---|
814 | |
---|
815 | ENDIF |
---|
816 | |
---|
817 | ENDIF |
---|
818 | |
---|
819 | ! |
---|
820 | !-- Store partner grid point co-ordinates as lists. |
---|
821 | !-- Create custom MPI vector datatypes for contiguous data transfer |
---|
822 | IF ( vnested ) CALL vnest_init_pegrid_domain |
---|
823 | |
---|
824 | |
---|
825 | #else |
---|
826 | |
---|
827 | ! |
---|
828 | !-- Array bounds when running on a single PE (respectively a non-parallel |
---|
829 | !-- machine) |
---|
830 | nxl = 0 |
---|
831 | nxr = nx |
---|
832 | nnx = nxr - nxl + 1 |
---|
833 | nys = 0 |
---|
834 | nyn = ny |
---|
835 | nny = nyn - nys + 1 |
---|
836 | nzb = 0 |
---|
837 | nzt = nz |
---|
838 | nnz = nz |
---|
839 | |
---|
840 | ALLOCATE( hor_index_bounds(4,0:0) ) |
---|
841 | hor_index_bounds(1,0) = nxl |
---|
842 | hor_index_bounds(2,0) = nxr |
---|
843 | hor_index_bounds(3,0) = nys |
---|
844 | hor_index_bounds(4,0) = nyn |
---|
845 | |
---|
846 | ! |
---|
847 | !-- Array bounds for the pressure solver (in the parallel code, these bounds |
---|
848 | !-- are the ones for the transposed arrays) |
---|
849 | nys_x = nys |
---|
850 | nyn_x = nyn |
---|
851 | nzb_x = nzb + 1 |
---|
852 | nzt_x = nzt |
---|
853 | |
---|
854 | nxl_y = nxl |
---|
855 | nxr_y = nxr |
---|
856 | nzb_y = nzb + 1 |
---|
857 | nzt_y = nzt |
---|
858 | |
---|
859 | nxl_z = nxl |
---|
860 | nxr_z = nxr |
---|
861 | nys_z = nys |
---|
862 | nyn_z = nyn |
---|
863 | |
---|
864 | #endif |
---|
865 | |
---|
866 | ! |
---|
867 | !-- Calculate number of grid levels necessary for the multigrid poisson solver |
---|
868 | !-- as well as the gridpoint indices on each level |
---|
869 | IF ( psolver(1:9) == 'multigrid' ) THEN |
---|
870 | |
---|
871 | ! |
---|
872 | !-- First calculate number of possible grid levels for the subdomains |
---|
873 | mg_levels_x = 1 |
---|
874 | mg_levels_y = 1 |
---|
875 | mg_levels_z = 1 |
---|
876 | |
---|
877 | i = nnx |
---|
878 | DO WHILE ( MOD( i, 2 ) == 0 .AND. i /= 2 ) |
---|
879 | i = i / 2 |
---|
880 | mg_levels_x = mg_levels_x + 1 |
---|
881 | ENDDO |
---|
882 | |
---|
883 | j = nny |
---|
884 | DO WHILE ( MOD( j, 2 ) == 0 .AND. j /= 2 ) |
---|
885 | j = j / 2 |
---|
886 | mg_levels_y = mg_levels_y + 1 |
---|
887 | ENDDO |
---|
888 | |
---|
889 | k = nz ! do not use nnz because it might be > nz due to transposition |
---|
890 | ! requirements |
---|
891 | DO WHILE ( MOD( k, 2 ) == 0 .AND. k /= 2 ) |
---|
892 | k = k / 2 |
---|
893 | mg_levels_z = mg_levels_z + 1 |
---|
894 | ENDDO |
---|
895 | ! |
---|
896 | !-- The optimized MG-solver does not allow odd values for nz at the coarsest |
---|
897 | !-- grid level |
---|
898 | IF ( TRIM( psolver ) /= 'multigrid_noopt' ) THEN |
---|
899 | IF ( MOD( k, 2 ) /= 0 ) mg_levels_z = mg_levels_z - 1 |
---|
900 | ENDIF |
---|
901 | |
---|
902 | maximum_grid_level = MIN( mg_levels_x, mg_levels_y, mg_levels_z ) |
---|
903 | |
---|
904 | ! |
---|
905 | !-- Find out, if the total domain allows more levels. These additional |
---|
906 | !-- levels are identically processed on all PEs. |
---|
907 | IF ( numprocs > 1 .AND. mg_switch_to_pe0_level /= -1 ) THEN |
---|
908 | |
---|
909 | IF ( mg_levels_z > MIN( mg_levels_x, mg_levels_y ) ) THEN |
---|
910 | |
---|
911 | mg_switch_to_pe0_level_l = maximum_grid_level |
---|
912 | |
---|
913 | mg_levels_x = 1 |
---|
914 | mg_levels_y = 1 |
---|
915 | |
---|
916 | i = nx+1 |
---|
917 | DO WHILE ( MOD( i, 2 ) == 0 .AND. i /= 2 ) |
---|
918 | i = i / 2 |
---|
919 | mg_levels_x = mg_levels_x + 1 |
---|
920 | ENDDO |
---|
921 | |
---|
922 | j = ny+1 |
---|
923 | DO WHILE ( MOD( j, 2 ) == 0 .AND. j /= 2 ) |
---|
924 | j = j / 2 |
---|
925 | mg_levels_y = mg_levels_y + 1 |
---|
926 | ENDDO |
---|
927 | |
---|
928 | maximum_grid_level_l = MIN( mg_levels_x, mg_levels_y, mg_levels_z ) |
---|
929 | |
---|
930 | IF ( maximum_grid_level_l > mg_switch_to_pe0_level_l ) THEN |
---|
931 | mg_switch_to_pe0_level_l = maximum_grid_level_l - & |
---|
932 | mg_switch_to_pe0_level_l + 1 |
---|
933 | ELSE |
---|
934 | mg_switch_to_pe0_level_l = 0 |
---|
935 | ENDIF |
---|
936 | |
---|
937 | ELSE |
---|
938 | mg_switch_to_pe0_level_l = 0 |
---|
939 | maximum_grid_level_l = maximum_grid_level |
---|
940 | |
---|
941 | ENDIF |
---|
942 | |
---|
943 | ! |
---|
944 | !-- Use switch level calculated above only if it is not pre-defined |
---|
945 | !-- by user |
---|
946 | IF ( mg_switch_to_pe0_level == 0 ) THEN |
---|
947 | IF ( mg_switch_to_pe0_level_l /= 0 ) THEN |
---|
948 | mg_switch_to_pe0_level = mg_switch_to_pe0_level_l |
---|
949 | maximum_grid_level = maximum_grid_level_l |
---|
950 | ENDIF |
---|
951 | |
---|
952 | ELSE |
---|
953 | ! |
---|
954 | !-- Check pre-defined value and reset to default, if neccessary |
---|
955 | IF ( mg_switch_to_pe0_level < mg_switch_to_pe0_level_l .OR. & |
---|
956 | mg_switch_to_pe0_level >= maximum_grid_level_l ) THEN |
---|
957 | message_string = 'mg_switch_to_pe0_level ' // & |
---|
958 | 'out of range and reset to 0' |
---|
959 | CALL message( 'init_pegrid', 'PA0235', 0, 1, 0, 6, 0 ) |
---|
960 | mg_switch_to_pe0_level = 0 |
---|
961 | ELSE |
---|
962 | ! |
---|
963 | !-- Use the largest number of possible levels anyway and recalculate |
---|
964 | !-- the switch level to this largest number of possible values |
---|
965 | maximum_grid_level = maximum_grid_level_l |
---|
966 | |
---|
967 | ENDIF |
---|
968 | |
---|
969 | ENDIF |
---|
970 | |
---|
971 | ENDIF |
---|
972 | |
---|
973 | ALLOCATE( grid_level_count(maximum_grid_level), & |
---|
974 | nxl_mg(0:maximum_grid_level), nxr_mg(0:maximum_grid_level), & |
---|
975 | nyn_mg(0:maximum_grid_level), nys_mg(0:maximum_grid_level), & |
---|
976 | nzt_mg(0:maximum_grid_level) ) |
---|
977 | |
---|
978 | grid_level_count = 0 |
---|
979 | ! |
---|
980 | !-- Index zero required as dummy due to definition of arrays f2 and p2 in |
---|
981 | !-- recursive subroutine next_mg_level |
---|
982 | nxl_mg(0) = 0; nxr_mg(0) = 0; nyn_mg(0) = 0; nys_mg(0) = 0; nzt_mg(0) = 0 |
---|
983 | |
---|
984 | nxl_l = nxl; nxr_l = nxr; nys_l = nys; nyn_l = nyn; nzt_l = nzt |
---|
985 | |
---|
986 | DO i = maximum_grid_level, 1 , -1 |
---|
987 | |
---|
988 | IF ( i == mg_switch_to_pe0_level ) THEN |
---|
989 | #if defined( __parallel ) |
---|
990 | ! |
---|
991 | !-- Save the grid size of the subdomain at the switch level, because |
---|
992 | !-- it is needed in poismg. |
---|
993 | ind(1) = nxl_l; ind(2) = nxr_l |
---|
994 | ind(3) = nys_l; ind(4) = nyn_l |
---|
995 | ind(5) = nzt_l |
---|
996 | ALLOCATE( ind_all(5*numprocs), mg_loc_ind(5,0:numprocs-1) ) |
---|
997 | CALL MPI_ALLGATHER( ind, 5, MPI_INTEGER, ind_all, 5, & |
---|
998 | MPI_INTEGER, comm2d, ierr ) |
---|
999 | DO j = 0, numprocs-1 |
---|
1000 | DO k = 1, 5 |
---|
1001 | mg_loc_ind(k,j) = ind_all(k+j*5) |
---|
1002 | ENDDO |
---|
1003 | ENDDO |
---|
1004 | DEALLOCATE( ind_all ) |
---|
1005 | ! |
---|
1006 | !-- Calculate the grid size of the total domain |
---|
1007 | nxr_l = ( nxr_l-nxl_l+1 ) * pdims(1) - 1 |
---|
1008 | nxl_l = 0 |
---|
1009 | nyn_l = ( nyn_l-nys_l+1 ) * pdims(2) - 1 |
---|
1010 | nys_l = 0 |
---|
1011 | ! |
---|
1012 | !-- The size of this gathered array must not be larger than the |
---|
1013 | !-- array tend, which is used in the multigrid scheme as a temporary |
---|
1014 | !-- array. Therefore the subdomain size of an PE is calculated and |
---|
1015 | !-- the size of the gathered grid. These values are used in |
---|
1016 | !-- routines pres and poismg |
---|
1017 | subdomain_size = ( nxr - nxl + 2 * nbgp + 1 ) * & |
---|
1018 | ( nyn - nys + 2 * nbgp + 1 ) * ( nzt - nzb + 2 ) |
---|
1019 | gathered_size = ( nxr_l - nxl_l + 3 ) * ( nyn_l - nys_l + 3 ) * & |
---|
1020 | ( nzt_l - nzb + 2 ) |
---|
1021 | |
---|
1022 | #else |
---|
1023 | message_string = 'multigrid gather/scatter impossible ' // & |
---|
1024 | 'in non parallel mode' |
---|
1025 | CALL message( 'init_pegrid', 'PA0237', 1, 2, 0, 6, 0 ) |
---|
1026 | #endif |
---|
1027 | ENDIF |
---|
1028 | |
---|
1029 | nxl_mg(i) = nxl_l |
---|
1030 | nxr_mg(i) = nxr_l |
---|
1031 | nys_mg(i) = nys_l |
---|
1032 | nyn_mg(i) = nyn_l |
---|
1033 | nzt_mg(i) = nzt_l |
---|
1034 | |
---|
1035 | nxl_l = nxl_l / 2 |
---|
1036 | nxr_l = nxr_l / 2 |
---|
1037 | nys_l = nys_l / 2 |
---|
1038 | nyn_l = nyn_l / 2 |
---|
1039 | nzt_l = nzt_l / 2 |
---|
1040 | |
---|
1041 | ENDDO |
---|
1042 | |
---|
1043 | ! |
---|
1044 | !-- Temporary problem: Currently calculation of maxerror iin routine poismg crashes |
---|
1045 | !-- if grid data are collected on PE0 already on the finest grid level. |
---|
1046 | !-- To be solved later. |
---|
1047 | IF ( maximum_grid_level == mg_switch_to_pe0_level ) THEN |
---|
1048 | message_string = 'grid coarsening on subdomain level cannot be performed' |
---|
1049 | CALL message( 'poismg', 'PA0236', 1, 2, 0, 6, 0 ) |
---|
1050 | ENDIF |
---|
1051 | |
---|
1052 | ELSE |
---|
1053 | |
---|
1054 | maximum_grid_level = 0 |
---|
1055 | |
---|
1056 | ENDIF |
---|
1057 | |
---|
1058 | ! |
---|
1059 | !-- Default level 0 tells exchange_horiz that all ghost planes have to be |
---|
1060 | !-- exchanged. grid_level is adjusted in poismg, where only one ghost plane |
---|
1061 | !-- is required. |
---|
1062 | grid_level = 0 |
---|
1063 | |
---|
1064 | #if defined( __parallel ) |
---|
1065 | ! |
---|
1066 | !-- Gridpoint number for the exchange of ghost points (y-line for 2D-arrays) |
---|
1067 | ngp_y = nyn - nys + 1 + 2 * nbgp |
---|
1068 | |
---|
1069 | ! |
---|
1070 | !-- Define new MPI derived datatypes for the exchange of ghost points in |
---|
1071 | !-- x- and y-direction for 2D-arrays (line) |
---|
1072 | CALL MPI_TYPE_VECTOR( nxr-nxl+1+2*nbgp, nbgp, ngp_y, MPI_REAL, type_x, & |
---|
1073 | ierr ) |
---|
1074 | CALL MPI_TYPE_COMMIT( type_x, ierr ) |
---|
1075 | |
---|
1076 | CALL MPI_TYPE_VECTOR( nbgp, ngp_y, ngp_y, MPI_REAL, type_y, ierr ) |
---|
1077 | CALL MPI_TYPE_COMMIT( type_y, ierr ) |
---|
1078 | ! |
---|
1079 | !-- Define new MPI derived datatypes for the exchange of ghost points in |
---|
1080 | !-- x- and y-direction for 2D-INTEGER arrays (line) - on normal grid |
---|
1081 | ALLOCATE( type_x_int(0:maximum_grid_level), & |
---|
1082 | type_y_int(0:maximum_grid_level) ) |
---|
1083 | |
---|
1084 | CALL MPI_TYPE_VECTOR( nxr-nxl+1+2*nbgp, nbgp, ngp_y, MPI_INTEGER, & |
---|
1085 | type_x_int(0), ierr ) |
---|
1086 | CALL MPI_TYPE_COMMIT( type_x_int(0), ierr ) |
---|
1087 | |
---|
1088 | CALL MPI_TYPE_VECTOR( nbgp, ngp_y, ngp_y, MPI_INTEGER, type_y_int(0), ierr ) |
---|
1089 | CALL MPI_TYPE_COMMIT( type_y_int(0), ierr ) |
---|
1090 | ! |
---|
1091 | !-- Calculate gridpoint numbers for the exchange of ghost points along x |
---|
1092 | !-- (yz-plane for 3D-arrays) and define MPI derived data type(s) for the |
---|
1093 | !-- exchange of ghost points in y-direction (xz-plane). |
---|
1094 | !-- Do these calculations for the model grid and (if necessary) also |
---|
1095 | !-- for the coarser grid levels used in the multigrid method |
---|
1096 | ALLOCATE ( ngp_xz(0:maximum_grid_level), ngp_yz(0:maximum_grid_level), & |
---|
1097 | type_xz(0:maximum_grid_level), type_yz(0:maximum_grid_level) ) |
---|
1098 | |
---|
1099 | nxl_l = nxl; nxr_l = nxr; nys_l = nys; nyn_l = nyn; nzb_l = nzb; nzt_l = nzt |
---|
1100 | |
---|
1101 | ! |
---|
1102 | !-- Discern between the model grid, which needs nbgp ghost points and |
---|
1103 | !-- grid levels for the multigrid scheme. In the latter case only one |
---|
1104 | !-- ghost point is necessary. |
---|
1105 | !-- First definition of MPI-datatypes for exchange of ghost layers on normal |
---|
1106 | !-- grid. The following loop is needed for data exchange in poismg.f90. |
---|
1107 | ! |
---|
1108 | !-- Determine number of grid points of yz-layer for exchange |
---|
1109 | ngp_yz(0) = (nzt - nzb + 2) * (nyn - nys + 1 + 2 * nbgp) |
---|
1110 | |
---|
1111 | ! |
---|
1112 | !-- Define an MPI-datatype for the exchange of left/right boundaries. |
---|
1113 | !-- Although data are contiguous in physical memory (which does not |
---|
1114 | !-- necessarily require an MPI-derived datatype), the data exchange between |
---|
1115 | !-- left and right PE's using the MPI-derived type is 10% faster than without. |
---|
1116 | CALL MPI_TYPE_VECTOR( nxr-nxl+1+2*nbgp, nbgp*(nzt-nzb+2), ngp_yz(0), & |
---|
1117 | MPI_REAL, type_xz(0), ierr ) |
---|
1118 | CALL MPI_TYPE_COMMIT( type_xz(0), ierr ) |
---|
1119 | |
---|
1120 | CALL MPI_TYPE_VECTOR( nbgp, ngp_yz(0), ngp_yz(0), MPI_REAL, type_yz(0), & |
---|
1121 | ierr ) |
---|
1122 | CALL MPI_TYPE_COMMIT( type_yz(0), ierr ) |
---|
1123 | |
---|
1124 | ! |
---|
1125 | !-- Definition of MPI-datatypes for multigrid method (coarser level grids) |
---|
1126 | IF ( psolver(1:9) == 'multigrid' ) THEN |
---|
1127 | ! |
---|
1128 | !-- Definition of MPI-datatyoe as above, but only 1 ghost level is used |
---|
1129 | DO i = maximum_grid_level, 1 , -1 |
---|
1130 | ! |
---|
1131 | !-- For 3D-exchange |
---|
1132 | ngp_xz(i) = (nzt_l - nzb_l + 2) * (nxr_l - nxl_l + 3) |
---|
1133 | ngp_yz(i) = (nzt_l - nzb_l + 2) * (nyn_l - nys_l + 3) |
---|
1134 | |
---|
1135 | CALL MPI_TYPE_VECTOR( nxr_l-nxl_l+3, nzt_l-nzb_l+2, ngp_yz(i), & |
---|
1136 | MPI_REAL, type_xz(i), ierr ) |
---|
1137 | CALL MPI_TYPE_COMMIT( type_xz(i), ierr ) |
---|
1138 | |
---|
1139 | CALL MPI_TYPE_VECTOR( 1, ngp_yz(i), ngp_yz(i), MPI_REAL, type_yz(i), & |
---|
1140 | ierr ) |
---|
1141 | CALL MPI_TYPE_COMMIT( type_yz(i), ierr ) |
---|
1142 | |
---|
1143 | |
---|
1144 | !-- For 2D-exchange of INTEGER arrays on coarser grid level, where 2 ghost |
---|
1145 | !-- points need to be exchanged. |
---|
1146 | CALL MPI_TYPE_VECTOR( nxr_l-nxl_l+5, 2, nyn_l-nys_l+5, MPI_INTEGER, & |
---|
1147 | type_x_int(i), ierr ) |
---|
1148 | CALL MPI_TYPE_COMMIT( type_x_int(i), ierr ) |
---|
1149 | |
---|
1150 | |
---|
1151 | CALL MPI_TYPE_VECTOR( 2, nyn_l-nys_l+5, nyn_l-nys_l+5, MPI_INTEGER, & |
---|
1152 | type_y_int(i), ierr ) |
---|
1153 | CALL MPI_TYPE_COMMIT( type_y_int(i), ierr ) |
---|
1154 | |
---|
1155 | |
---|
1156 | |
---|
1157 | nxl_l = nxl_l / 2 |
---|
1158 | nxr_l = nxr_l / 2 |
---|
1159 | nys_l = nys_l / 2 |
---|
1160 | nyn_l = nyn_l / 2 |
---|
1161 | nzt_l = nzt_l / 2 |
---|
1162 | |
---|
1163 | ENDDO |
---|
1164 | |
---|
1165 | ENDIF |
---|
1166 | ! |
---|
1167 | !-- Define data types for exchange of 3D Integer arrays. |
---|
1168 | ngp_yz_int = (nzt - nzb + 2) * (nyn - nys + 1 + 2 * nbgp) |
---|
1169 | |
---|
1170 | CALL MPI_TYPE_VECTOR( nxr-nxl+1+2*nbgp, nbgp*(nzt-nzb+2), ngp_yz_int, & |
---|
1171 | MPI_INTEGER, type_xz_int, ierr ) |
---|
1172 | CALL MPI_TYPE_COMMIT( type_xz_int, ierr ) |
---|
1173 | |
---|
1174 | CALL MPI_TYPE_VECTOR( nbgp, ngp_yz_int, ngp_yz_int, MPI_INTEGER, type_yz_int, & |
---|
1175 | ierr ) |
---|
1176 | CALL MPI_TYPE_COMMIT( type_yz_int, ierr ) |
---|
1177 | |
---|
1178 | #endif |
---|
1179 | |
---|
1180 | #if defined( __parallel ) |
---|
1181 | ! |
---|
1182 | !-- Setting of flags for inflow/outflow/nesting conditions. |
---|
1183 | IF ( pleft == MPI_PROC_NULL ) THEN |
---|
1184 | IF ( bc_lr == 'dirichlet/radiation' ) THEN |
---|
1185 | inflow_l = .TRUE. |
---|
1186 | ELSEIF ( bc_lr == 'radiation/dirichlet' ) THEN |
---|
1187 | outflow_l = .TRUE. |
---|
1188 | ELSEIF ( bc_lr == 'nested' ) THEN |
---|
1189 | nest_bound_l = .TRUE. |
---|
1190 | ENDIF |
---|
1191 | ENDIF |
---|
1192 | |
---|
1193 | IF ( pright == MPI_PROC_NULL ) THEN |
---|
1194 | IF ( bc_lr == 'dirichlet/radiation' ) THEN |
---|
1195 | outflow_r = .TRUE. |
---|
1196 | ELSEIF ( bc_lr == 'radiation/dirichlet' ) THEN |
---|
1197 | inflow_r = .TRUE. |
---|
1198 | ELSEIF ( bc_lr == 'nested' ) THEN |
---|
1199 | nest_bound_r = .TRUE. |
---|
1200 | ENDIF |
---|
1201 | ENDIF |
---|
1202 | |
---|
1203 | IF ( psouth == MPI_PROC_NULL ) THEN |
---|
1204 | IF ( bc_ns == 'dirichlet/radiation' ) THEN |
---|
1205 | outflow_s = .TRUE. |
---|
1206 | ELSEIF ( bc_ns == 'radiation/dirichlet' ) THEN |
---|
1207 | inflow_s = .TRUE. |
---|
1208 | ELSEIF ( bc_ns == 'nested' ) THEN |
---|
1209 | nest_bound_s = .TRUE. |
---|
1210 | ENDIF |
---|
1211 | ENDIF |
---|
1212 | |
---|
1213 | IF ( pnorth == MPI_PROC_NULL ) THEN |
---|
1214 | IF ( bc_ns == 'dirichlet/radiation' ) THEN |
---|
1215 | inflow_n = .TRUE. |
---|
1216 | ELSEIF ( bc_ns == 'radiation/dirichlet' ) THEN |
---|
1217 | outflow_n = .TRUE. |
---|
1218 | ELSEIF ( bc_ns == 'nested' ) THEN |
---|
1219 | nest_bound_n = .TRUE. |
---|
1220 | ENDIF |
---|
1221 | ENDIF |
---|
1222 | |
---|
1223 | ! |
---|
1224 | !-- Broadcast the id of the inflow PE |
---|
1225 | IF ( inflow_l ) THEN |
---|
1226 | id_inflow_l = myidx |
---|
1227 | ELSE |
---|
1228 | id_inflow_l = 0 |
---|
1229 | ENDIF |
---|
1230 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
---|
1231 | CALL MPI_ALLREDUCE( id_inflow_l, id_inflow, 1, MPI_INTEGER, MPI_SUM, & |
---|
1232 | comm1dx, ierr ) |
---|
1233 | |
---|
1234 | ! |
---|
1235 | !-- Broadcast the id of the recycling plane |
---|
1236 | !-- WARNING: needs to be adjusted in case of inflows other than from left side! |
---|
1237 | IF ( NINT( recycling_width / dx ) >= nxl .AND. & |
---|
1238 | NINT( recycling_width / dx ) <= nxr ) THEN |
---|
1239 | id_recycling_l = myidx |
---|
1240 | ELSE |
---|
1241 | id_recycling_l = 0 |
---|
1242 | ENDIF |
---|
1243 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
---|
1244 | CALL MPI_ALLREDUCE( id_recycling_l, id_recycling, 1, MPI_INTEGER, MPI_SUM, & |
---|
1245 | comm1dx, ierr ) |
---|
1246 | |
---|
1247 | ! |
---|
1248 | !-- Broadcast the id of the outflow PE and outflow-source plane |
---|
1249 | IF ( turbulent_outflow ) THEN |
---|
1250 | |
---|
1251 | IF ( outflow_r ) THEN |
---|
1252 | id_outflow_l = myidx |
---|
1253 | ELSE |
---|
1254 | id_outflow_l = 0 |
---|
1255 | ENDIF |
---|
1256 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
---|
1257 | CALL MPI_ALLREDUCE( id_outflow_l, id_outflow, 1, MPI_INTEGER, MPI_SUM, & |
---|
1258 | comm1dx, ierr ) |
---|
1259 | |
---|
1260 | IF ( NINT( outflow_source_plane / dx ) >= nxl .AND. & |
---|
1261 | NINT( outflow_source_plane / dx ) <= nxr ) THEN |
---|
1262 | id_outflow_source_l = myidx |
---|
1263 | ELSE |
---|
1264 | id_outflow_source_l = 0 |
---|
1265 | ENDIF |
---|
1266 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
---|
1267 | CALL MPI_ALLREDUCE( id_outflow_source_l, id_outflow_source, 1, & |
---|
1268 | MPI_INTEGER, MPI_SUM, comm1dx, ierr ) |
---|
1269 | |
---|
1270 | ENDIF |
---|
1271 | |
---|
1272 | CALL location_message( 'finished', .TRUE. ) |
---|
1273 | |
---|
1274 | #else |
---|
1275 | IF ( bc_lr == 'dirichlet/radiation' ) THEN |
---|
1276 | inflow_l = .TRUE. |
---|
1277 | outflow_r = .TRUE. |
---|
1278 | ELSEIF ( bc_lr == 'radiation/dirichlet' ) THEN |
---|
1279 | outflow_l = .TRUE. |
---|
1280 | inflow_r = .TRUE. |
---|
1281 | ENDIF |
---|
1282 | |
---|
1283 | IF ( bc_ns == 'dirichlet/radiation' ) THEN |
---|
1284 | inflow_n = .TRUE. |
---|
1285 | outflow_s = .TRUE. |
---|
1286 | ELSEIF ( bc_ns == 'radiation/dirichlet' ) THEN |
---|
1287 | outflow_n = .TRUE. |
---|
1288 | inflow_s = .TRUE. |
---|
1289 | ENDIF |
---|
1290 | #endif |
---|
1291 | |
---|
1292 | ! |
---|
1293 | !-- At the inflow or outflow, u or v, respectively, have to be calculated for |
---|
1294 | !-- one more grid point. |
---|
1295 | IF ( inflow_l .OR. outflow_l .OR. nest_bound_l ) THEN |
---|
1296 | nxlu = nxl + 1 |
---|
1297 | ELSE |
---|
1298 | nxlu = nxl |
---|
1299 | ENDIF |
---|
1300 | IF ( inflow_s .OR. outflow_s .OR. nest_bound_s ) THEN |
---|
1301 | nysv = nys + 1 |
---|
1302 | ELSE |
---|
1303 | nysv = nys |
---|
1304 | ENDIF |
---|
1305 | |
---|
1306 | ! |
---|
1307 | !-- Allocate wall flag arrays used in the multigrid solver |
---|
1308 | IF ( psolver(1:9) == 'multigrid' ) THEN |
---|
1309 | |
---|
1310 | DO i = maximum_grid_level, 1, -1 |
---|
1311 | |
---|
1312 | SELECT CASE ( i ) |
---|
1313 | |
---|
1314 | CASE ( 1 ) |
---|
1315 | ALLOCATE( wall_flags_1(nzb:nzt_mg(i)+1, & |
---|
1316 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
1317 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
1318 | |
---|
1319 | CASE ( 2 ) |
---|
1320 | ALLOCATE( wall_flags_2(nzb:nzt_mg(i)+1, & |
---|
1321 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
1322 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
1323 | |
---|
1324 | CASE ( 3 ) |
---|
1325 | ALLOCATE( wall_flags_3(nzb:nzt_mg(i)+1, & |
---|
1326 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
1327 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
1328 | |
---|
1329 | CASE ( 4 ) |
---|
1330 | ALLOCATE( wall_flags_4(nzb:nzt_mg(i)+1, & |
---|
1331 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
1332 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
1333 | |
---|
1334 | CASE ( 5 ) |
---|
1335 | ALLOCATE( wall_flags_5(nzb:nzt_mg(i)+1, & |
---|
1336 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
1337 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
1338 | |
---|
1339 | CASE ( 6 ) |
---|
1340 | ALLOCATE( wall_flags_6(nzb:nzt_mg(i)+1, & |
---|
1341 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
1342 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
1343 | |
---|
1344 | CASE ( 7 ) |
---|
1345 | ALLOCATE( wall_flags_7(nzb:nzt_mg(i)+1, & |
---|
1346 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
1347 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
1348 | |
---|
1349 | CASE ( 8 ) |
---|
1350 | ALLOCATE( wall_flags_8(nzb:nzt_mg(i)+1, & |
---|
1351 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
1352 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
1353 | |
---|
1354 | CASE ( 9 ) |
---|
1355 | ALLOCATE( wall_flags_9(nzb:nzt_mg(i)+1, & |
---|
1356 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
1357 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
1358 | |
---|
1359 | CASE ( 10 ) |
---|
1360 | ALLOCATE( wall_flags_10(nzb:nzt_mg(i)+1, & |
---|
1361 | nys_mg(i)-1:nyn_mg(i)+1, & |
---|
1362 | nxl_mg(i)-1:nxr_mg(i)+1) ) |
---|
1363 | |
---|
1364 | CASE DEFAULT |
---|
1365 | message_string = 'more than 10 multigrid levels' |
---|
1366 | CALL message( 'init_pegrid', 'PA0238', 1, 2, 0, 6, 0 ) |
---|
1367 | |
---|
1368 | END SELECT |
---|
1369 | |
---|
1370 | ENDDO |
---|
1371 | |
---|
1372 | ENDIF |
---|
1373 | |
---|
1374 | ! |
---|
1375 | !-- Calculate the number of groups into which parallel I/O is split. |
---|
1376 | !-- The default for files which are opened by all PEs (or where each |
---|
1377 | !-- PE opens his own independent file) is, that all PEs are doing input/output |
---|
1378 | !-- in parallel at the same time. This might cause performance or even more |
---|
1379 | !-- severe problems depending on the configuration of the underlying file |
---|
1380 | !-- system. |
---|
1381 | !-- First, set the default: |
---|
1382 | IF ( maximum_parallel_io_streams == -1 .OR. & |
---|
1383 | maximum_parallel_io_streams > numprocs ) THEN |
---|
1384 | maximum_parallel_io_streams = numprocs |
---|
1385 | ENDIF |
---|
1386 | |
---|
1387 | ! |
---|
1388 | !-- Now calculate the number of io_blocks and the io_group to which the |
---|
1389 | !-- respective PE belongs. I/O of the groups is done in serial, but in parallel |
---|
1390 | !-- for all PEs belonging to the same group. A preliminary setting with myid |
---|
1391 | !-- based on MPI_COMM_WORLD has been done in parin. |
---|
1392 | io_blocks = numprocs / maximum_parallel_io_streams |
---|
1393 | io_group = MOD( myid+1, io_blocks ) |
---|
1394 | |
---|
1395 | |
---|
1396 | END SUBROUTINE init_pegrid |
---|