1 | !> @file poismg.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 1997-2016 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 | ! Forced header and separation lines into 80 columns |
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23 | ! |
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24 | ! Former revisions: |
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25 | ! ----------------- |
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26 | ! $Id: poismg_mod.f90 2000 2016-08-20 18:09:15Z knoop $ |
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27 | ! |
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28 | ! 1934 2016-06-13 09:46:57Z hellstea |
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29 | ! Rename subroutines and cpu-measure log points to indicate default version |
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30 | ! |
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31 | ! 1904 2016-05-11 13:06:12Z suehring |
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32 | ! Bugfix: enable special_exchange_horiz only for finer grid levels. |
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33 | ! Some formatting adjustments and variable descriptions. |
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34 | ! |
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35 | ! 1898 2016-05-03 11:27:17Z suehring |
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36 | ! Bugfix: bottom and top boundary condition in resid_fast |
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37 | ! Bugfix: restriction at nzb+1 |
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38 | ! formatting adjustments, variable descriptions added in some declaration blocks |
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39 | ! |
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40 | ! 1850 2016-04-08 13:29:27Z maronga |
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41 | ! Module renamed |
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42 | ! |
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43 | ! |
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44 | ! 1762 2016-02-25 12:31:13Z hellstea |
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45 | ! Introduction of nested domain feature |
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46 | ! |
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47 | ! 1682 2015-10-07 23:56:08Z knoop |
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48 | ! Code annotations made doxygen readable |
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49 | ! |
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50 | ! 1609 2015-07-03 15:37:58Z maronga |
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51 | ! Bugfix: allow compilation without __parallel. |
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52 | ! |
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53 | ! 1575 2015-03-27 09:56:27Z raasch |
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54 | ! Initial revision. |
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55 | ! Routine re-written and optimised based on poismg. |
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56 | ! |
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57 | ! Following optimisations have been made: |
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58 | ! - vectorisation (for Intel-CPUs) of the red-black algorithm by resorting |
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59 | ! array elements with even and odd indices |
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60 | ! - explicit boundary conditions for building walls removed (solver is |
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61 | ! running through the buildings |
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62 | ! - reduced data transfer in case of ghost point exchange, because only |
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63 | ! "red" or "black" data points need to be exchanged. This is not applied |
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64 | ! for coarser grid levels, since for then the transfer time is latency bound |
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65 | ! |
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66 | ! |
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67 | ! Description: |
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68 | ! ------------ |
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69 | !> Solves the Poisson equation for the perturbation pressure with a multigrid |
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70 | !> V- or W-Cycle scheme. |
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71 | !> |
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72 | !> This multigrid method was originally developed for PALM by Joerg Uhlenbrock, |
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73 | !> September 2000 - July 2001. It has been optimised for speed by Klaus |
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74 | !> Ketelsen in November 2014. |
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75 | !> |
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76 | !> @attention Loop unrolling and cache optimization in SOR-Red/Black method |
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77 | !> still does not give the expected speedup! |
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78 | !> |
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79 | !> @todo Further work required. |
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80 | !------------------------------------------------------------------------------! |
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81 | MODULE poismg_mod |
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82 | |
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83 | |
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84 | USE cpulog, & |
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85 | ONLY: cpu_log, log_point_s |
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86 | |
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87 | USE kinds |
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88 | |
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89 | USE pegrid |
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90 | |
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91 | PRIVATE |
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92 | |
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93 | INTEGER, SAVE :: ind_even_odd !< border index between even and odd k index |
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94 | INTEGER, DIMENSION(:), SAVE, ALLOCATABLE :: even_odd_level !< stores ind_even_odd for all MG levels |
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95 | |
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96 | REAL(wp), DIMENSION(:,:), SAVE, ALLOCATABLE :: f1_mg_b, f2_mg_b, f3_mg_b !< blocked version of f1_mg ... |
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97 | |
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98 | INTERFACE poismg |
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99 | MODULE PROCEDURE poismg |
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100 | END INTERFACE poismg |
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101 | |
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102 | INTERFACE sort_k_to_even_odd_blocks |
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103 | MODULE PROCEDURE sort_k_to_even_odd_blocks |
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104 | MODULE PROCEDURE sort_k_to_even_odd_blocks_int |
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105 | MODULE PROCEDURE sort_k_to_even_odd_blocks_1d |
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106 | END INTERFACE sort_k_to_even_odd_blocks |
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107 | |
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108 | PUBLIC poismg |
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109 | |
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110 | CONTAINS |
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111 | |
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112 | !------------------------------------------------------------------------------! |
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113 | ! Description: |
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114 | ! ------------ |
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115 | !> Solves the Poisson equation for the perturbation pressure with a multigrid |
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116 | !> V- or W-Cycle scheme. |
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117 | !------------------------------------------------------------------------------! |
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118 | SUBROUTINE poismg( r ) |
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119 | |
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120 | USE arrays_3d, & |
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121 | ONLY: d, p_loc |
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122 | |
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123 | USE control_parameters, & |
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124 | ONLY: gathered_size, grid_level, grid_level_count, & |
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125 | maximum_grid_level, message_string, mgcycles, mg_cycles, & |
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126 | mg_switch_to_pe0_level, residual_limit, subdomain_size |
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127 | |
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128 | USE cpulog, & |
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129 | ONLY: cpu_log, log_point_s |
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130 | |
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131 | USE indices, & |
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132 | ONLY: nxl, nxlg, nxl_mg, nxr, nxrg, nxr_mg, nys, nysg, nys_mg, nyn,& |
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133 | nyng, nyn_mg, nzb, nzt, nzt_mg |
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134 | |
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135 | IMPLICIT NONE |
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136 | |
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137 | REAL(wp) :: maxerror !< |
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138 | REAL(wp) :: maximum_mgcycles !< |
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139 | REAL(wp) :: residual_norm !< |
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140 | |
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141 | REAL(wp), DIMENSION(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) :: r !< |
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142 | |
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143 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: p3 !< |
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144 | |
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145 | |
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146 | CALL cpu_log( log_point_s(29), 'poismg', 'start' ) |
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147 | ! |
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148 | !-- Initialize arrays and variables used in this subroutine |
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149 | |
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150 | !-- If the number of grid points of the gathered grid, which is collected |
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151 | !-- on PE0, is larger than the number of grid points of an PE, than array |
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152 | !-- p3 will be enlarged. |
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153 | IF ( gathered_size > subdomain_size ) THEN |
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154 | ALLOCATE( p3(nzb:nzt_mg(mg_switch_to_pe0_level)+1,nys_mg( & |
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155 | mg_switch_to_pe0_level)-1:nyn_mg(mg_switch_to_pe0_level)+1,& |
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156 | nxl_mg(mg_switch_to_pe0_level)-1:nxr_mg( & |
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157 | mg_switch_to_pe0_level)+1) ) |
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158 | ELSE |
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159 | ALLOCATE ( p3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
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160 | ENDIF |
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161 | |
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162 | p3 = 0.0_wp |
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163 | |
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164 | |
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165 | ! |
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166 | !-- Ghost boundaries have to be added to divergence array. |
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167 | !-- Exchange routine needs to know the grid level! |
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168 | grid_level = maximum_grid_level |
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169 | CALL exchange_horiz( d, 1) |
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170 | d(nzb,:,:) = d(nzb+1,:,:) |
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171 | |
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172 | ! |
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173 | !-- Initiation of the multigrid scheme. Does n cycles until the |
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174 | !-- residual is smaller than the given limit. The accuracy of the solution |
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175 | !-- of the poisson equation will increase with the number of cycles. |
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176 | !-- If the number of cycles is preset by the user, this number will be |
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177 | !-- carried out regardless of the accuracy. |
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178 | grid_level_count = 0 |
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179 | mgcycles = 0 |
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180 | IF ( mg_cycles == -1 ) THEN |
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181 | maximum_mgcycles = 0 |
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182 | residual_norm = 1.0_wp |
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183 | ELSE |
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184 | maximum_mgcycles = mg_cycles |
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185 | residual_norm = 0.0_wp |
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186 | ENDIF |
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187 | |
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188 | ! |
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189 | !-- Initial settings for sorting k-dimension from sequential order (alternate |
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190 | !-- even/odd) into blocks of even and odd or vice versa |
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191 | CALL init_even_odd_blocks |
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192 | |
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193 | ! |
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194 | !-- Sort input arrays in even/odd blocks along k-dimension |
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195 | CALL sort_k_to_even_odd_blocks( d, grid_level ) |
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196 | CALL sort_k_to_even_odd_blocks( p_loc, grid_level ) |
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197 | |
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198 | ! |
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199 | !-- The complete multigrid cycles are running in block mode, i.e. over |
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200 | !-- seperate data blocks of even and odd indices |
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201 | DO WHILE ( residual_norm > residual_limit .OR. & |
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202 | mgcycles < maximum_mgcycles ) |
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203 | |
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204 | CALL next_mg_level( d, p_loc, p3, r) |
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205 | |
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206 | ! |
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207 | !-- Calculate the residual if the user has not preset the number of |
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208 | !-- cycles to be performed |
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209 | IF ( maximum_mgcycles == 0 ) THEN |
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210 | CALL resid( d, p_loc, r ) |
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211 | maxerror = SUM( r(nzb+1:nzt,nys:nyn,nxl:nxr)**2 ) |
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212 | |
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213 | #if defined( __parallel ) |
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214 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
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215 | CALL MPI_ALLREDUCE( maxerror, residual_norm, 1, MPI_REAL, & |
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216 | MPI_SUM, comm2d, ierr) |
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217 | #else |
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218 | residual_norm = maxerror |
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219 | #endif |
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220 | residual_norm = SQRT( residual_norm ) |
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221 | ENDIF |
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222 | |
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223 | mgcycles = mgcycles + 1 |
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224 | |
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225 | ! |
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226 | !-- If the user has not limited the number of cycles, stop the run in case |
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227 | !-- of insufficient convergence |
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228 | IF ( mgcycles > 1000 .AND. mg_cycles == -1 ) THEN |
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229 | message_string = 'no sufficient convergence within 1000 cycles' |
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230 | CALL message( 'poismg', 'PA0283', 1, 2, 0, 6, 0 ) |
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231 | ENDIF |
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232 | |
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233 | ENDDO |
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234 | |
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235 | DEALLOCATE( p3 ) |
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236 | ! |
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237 | !-- Result has to be sorted back from even/odd blocks to sequential order |
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238 | CALL sort_k_to_sequential( p_loc ) |
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239 | ! |
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240 | !-- Unset the grid level. Variable is used to determine the MPI datatypes for |
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241 | !-- ghost point exchange |
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242 | grid_level = 0 |
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243 | |
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244 | CALL cpu_log( log_point_s(29), 'poismg', 'stop' ) |
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245 | |
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246 | END SUBROUTINE poismg |
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247 | |
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248 | |
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249 | !------------------------------------------------------------------------------! |
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250 | ! Description: |
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251 | ! ------------ |
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252 | !> Computes the residual of the perturbation pressure. |
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253 | !------------------------------------------------------------------------------! |
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254 | SUBROUTINE resid( f_mg, p_mg, r ) |
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255 | |
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256 | |
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257 | USE arrays_3d, & |
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258 | ONLY: f1_mg, f2_mg, f3_mg |
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259 | |
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260 | USE control_parameters, & |
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261 | ONLY: bc_lr_cyc, bc_ns_cyc, grid_level, ibc_p_b, ibc_p_t, inflow_l,& |
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262 | inflow_n, inflow_r, inflow_s, nest_bound_l, nest_bound_n, & |
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263 | nest_bound_r, nest_bound_s, outflow_l, outflow_n, outflow_r, & |
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264 | outflow_s |
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265 | |
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266 | USE grid_variables, & |
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267 | ONLY: ddx2_mg, ddy2_mg |
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268 | |
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269 | USE indices, & |
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270 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
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271 | |
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272 | IMPLICIT NONE |
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273 | |
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274 | INTEGER(iwp) :: i !< index variable along x |
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275 | INTEGER(iwp) :: j !< index variable along y |
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276 | INTEGER(iwp) :: k !< index variable along z |
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277 | INTEGER(iwp) :: l !< index indicating grid level |
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278 | INTEGER(iwp) :: km1 !< index variable along z dimension (k-1) |
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279 | INTEGER(iwp) :: kp1 !< index variable along z dimension (k+1) |
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280 | |
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281 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
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282 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
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283 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: f_mg !< velocity divergence |
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284 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
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285 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
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286 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: p_mg !< perturbation pressure |
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287 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
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288 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
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289 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: r !< residuum of perturbation pressure |
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290 | |
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291 | ! |
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292 | !-- Calculate the residual |
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293 | l = grid_level |
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294 | |
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295 | CALL cpu_log( log_point_s(53), 'resid', 'start' ) |
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296 | !$OMP PARALLEL PRIVATE (i,j,k,km1,kp1) |
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297 | !$OMP DO |
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298 | DO i = nxl_mg(l), nxr_mg(l) |
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299 | DO j = nys_mg(l), nyn_mg(l) |
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300 | !DIR$ IVDEP |
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301 | DO k = ind_even_odd+1, nzt_mg(l) |
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302 | km1 = k-ind_even_odd-1 |
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303 | kp1 = k-ind_even_odd |
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304 | r(k,j,i) = f_mg(k,j,i) & |
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305 | - ddx2_mg(l) * & |
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306 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
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307 | - ddy2_mg(l) * & |
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308 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
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309 | - f2_mg_b(k,l) * p_mg(kp1,j,i) & |
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310 | - f3_mg_b(k,l) * p_mg(km1,j,i) & |
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311 | + f1_mg_b(k,l) * p_mg(k,j,i) |
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312 | ENDDO |
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313 | !DIR$ IVDEP |
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314 | DO k = nzb+1, ind_even_odd |
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315 | km1 = k+ind_even_odd |
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316 | kp1 = k+ind_even_odd+1 |
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317 | r(k,j,i) = f_mg(k,j,i) & |
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318 | - ddx2_mg(l) * & |
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319 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
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320 | - ddy2_mg(l) * & |
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321 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
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322 | - f2_mg_b(k,l) * p_mg(kp1,j,i) & |
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323 | - f3_mg_b(k,l) * p_mg(km1,j,i) & |
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324 | + f1_mg_b(k,l) * p_mg(k,j,i) |
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325 | ENDDO |
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326 | ENDDO |
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327 | ENDDO |
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328 | !$OMP END PARALLEL |
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329 | ! |
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330 | !-- Horizontal boundary conditions |
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331 | CALL exchange_horiz( r, 1) |
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332 | |
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333 | IF ( .NOT. bc_lr_cyc ) THEN |
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334 | IF ( inflow_l .OR. outflow_l .OR. nest_bound_l ) THEN |
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335 | r(:,:,nxl_mg(l)-1) = r(:,:,nxl_mg(l)) |
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336 | ENDIF |
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337 | IF ( inflow_r .OR. outflow_r .OR. nest_bound_r ) THEN |
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338 | r(:,:,nxr_mg(l)+1) = r(:,:,nxr_mg(l)) |
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339 | ENDIF |
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340 | ENDIF |
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341 | |
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342 | IF ( .NOT. bc_ns_cyc ) THEN |
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343 | IF ( inflow_n .OR. outflow_n .OR. nest_bound_n ) THEN |
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344 | r(:,nyn_mg(l)+1,:) = r(:,nyn_mg(l),:) |
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345 | ENDIF |
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346 | IF ( inflow_s .OR. outflow_s .OR. nest_bound_s ) THEN |
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347 | r(:,nys_mg(l)-1,:) = r(:,nys_mg(l),:) |
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348 | ENDIF |
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349 | ENDIF |
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350 | |
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351 | ! |
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352 | !-- Boundary conditions at bottom and top of the domain. Points may be within |
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353 | !-- buildings, but that doesn't matter. |
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354 | IF ( ibc_p_b == 1 ) THEN |
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355 | ! |
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356 | !-- equivalent to r(nzb,:,: ) = r(nzb+1,:,:) |
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357 | r(nzb,:,: ) = r(ind_even_odd+1,:,:) |
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358 | ELSE |
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359 | r(nzb,:,: ) = 0.0_wp |
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360 | ENDIF |
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361 | |
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362 | IF ( ibc_p_t == 1 ) THEN |
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363 | ! |
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364 | !-- equivalent to r(nzt_mg(l)+1,:,: ) = r(nzt_mg(l),:,:) |
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365 | r(nzt_mg(l)+1,:,: ) = r(ind_even_odd,:,:) |
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366 | ELSE |
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367 | r(nzt_mg(l)+1,:,: ) = 0.0_wp |
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368 | ENDIF |
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369 | |
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370 | CALL cpu_log( log_point_s(53), 'resid', 'stop' ) |
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371 | |
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372 | END SUBROUTINE resid |
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373 | |
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374 | |
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375 | !------------------------------------------------------------------------------! |
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376 | ! Description: |
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377 | ! ------------ |
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378 | !> Interpolates the residual on the next coarser grid with "full weighting" |
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379 | !> scheme |
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380 | !------------------------------------------------------------------------------! |
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381 | SUBROUTINE restrict( f_mg, r ) |
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382 | |
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383 | |
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384 | USE control_parameters, & |
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385 | ONLY: bc_lr_cyc, bc_ns_cyc, grid_level, ibc_p_b, ibc_p_t, inflow_l,& |
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386 | inflow_n, inflow_r, inflow_s, nest_bound_l, nest_bound_n, & |
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387 | nest_bound_r, nest_bound_s, outflow_l, outflow_n, outflow_r, & |
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388 | outflow_s |
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389 | |
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390 | USE indices, & |
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391 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
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392 | |
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393 | IMPLICIT NONE |
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394 | |
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395 | INTEGER(iwp) :: i !< index variable along x on finer grid |
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396 | INTEGER(iwp) :: ic !< index variable along x on coarser grid |
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397 | INTEGER(iwp) :: j !< index variable along y on finer grid |
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398 | INTEGER(iwp) :: jc !< index variable along y on coarser grid |
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399 | INTEGER(iwp) :: k !< index variable along z on finer grid |
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400 | INTEGER(iwp) :: kc !< index variable along z on coarser grid |
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401 | INTEGER(iwp) :: l !< index indicating finer grid level |
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402 | INTEGER(iwp) :: km1 !< index variable along z dimension (k-1 on finer level) |
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403 | INTEGER(iwp) :: kp1 !< index variable along z dimension (k+1 on finer level) |
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404 | |
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405 | |
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406 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
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407 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
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408 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: & |
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409 | f_mg !< Residual on coarser grid level |
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410 | |
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411 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level+1)+1, & |
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412 | nys_mg(grid_level+1)-1:nyn_mg(grid_level+1)+1, & |
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413 | nxl_mg(grid_level+1)-1:nxr_mg(grid_level+1)+1) :: & |
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414 | r !< Residual on finer grid level |
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415 | |
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416 | ! |
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417 | !-- Interpolate the residual |
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418 | l = grid_level |
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419 | |
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420 | CALL cpu_log( log_point_s(54), 'restrict', 'start' ) |
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421 | ! |
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422 | !-- No wall treatment |
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423 | !$OMP PARALLEL PRIVATE (i,j,k,ic,jc,kc,km1,kp1) |
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424 | DO ic = nxl_mg(l), nxr_mg(l) |
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425 | i = 2*ic |
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426 | !$OMP DO SCHEDULE( STATIC ) |
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427 | DO jc = nys_mg(l), nyn_mg(l) |
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428 | ! |
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429 | !-- Calculation for the first point along k |
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430 | j = 2*jc |
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431 | ! |
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432 | !-- Calculation for the other points along k |
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433 | !DIR$ IVDEP |
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434 | DO k = ind_even_odd+1, nzt_mg(l+1) ! Fine grid at this point |
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435 | km1 = k-ind_even_odd-1 |
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436 | kp1 = k-ind_even_odd |
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437 | kc = k-ind_even_odd ! Coarse grid index |
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438 | |
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439 | f_mg(kc,jc,ic) = 1.0_wp / 64.0_wp * ( & |
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440 | 8.0_wp * r(k,j,i) & |
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441 | + 4.0_wp * ( r(k,j,i-1) + r(k,j,i+1) + & |
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442 | r(k,j+1,i) + r(k,j-1,i) ) & |
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443 | + 2.0_wp * ( r(k,j-1,i-1) + r(k,j+1,i-1) + & |
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444 | r(k,j-1,i+1) + r(k,j+1,i+1) ) & |
---|
445 | + 4.0_wp * r(km1,j,i) & |
---|
446 | + 2.0_wp * ( r(km1,j,i-1) + r(km1,j,i+1) + & |
---|
447 | r(km1,j+1,i) + r(km1,j-1,i) ) & |
---|
448 | + ( r(km1,j-1,i-1) + r(km1,j+1,i-1) + & |
---|
449 | r(km1,j-1,i+1) + r(km1,j+1,i+1) ) & |
---|
450 | + 4.0_wp * r(kp1,j,i) & |
---|
451 | + 2.0_wp * ( r(kp1,j,i-1) + r(kp1,j,i+1) + & |
---|
452 | r(kp1,j+1,i) + r(kp1,j-1,i) ) & |
---|
453 | + ( r(kp1,j-1,i-1) + r(kp1,j+1,i-1) + & |
---|
454 | r(kp1,j-1,i+1) + r(kp1,j+1,i+1) ) & |
---|
455 | ) |
---|
456 | ENDDO |
---|
457 | ENDDO |
---|
458 | !$OMP ENDDO nowait |
---|
459 | ENDDO |
---|
460 | !$OMP END PARALLEL |
---|
461 | |
---|
462 | ! |
---|
463 | !-- Ghost point exchange |
---|
464 | CALL exchange_horiz( f_mg, 1) |
---|
465 | ! |
---|
466 | !-- Horizontal boundary conditions |
---|
467 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
468 | IF ( inflow_l .OR. outflow_l .OR. nest_bound_l ) THEN |
---|
469 | f_mg(:,:,nxl_mg(l)-1) = f_mg(:,:,nxl_mg(l)) |
---|
470 | ENDIF |
---|
471 | IF ( inflow_r .OR. outflow_r .OR. nest_bound_r ) THEN |
---|
472 | f_mg(:,:,nxr_mg(l)+1) = f_mg(:,:,nxr_mg(l)) |
---|
473 | ENDIF |
---|
474 | ENDIF |
---|
475 | |
---|
476 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
477 | IF ( inflow_n .OR. outflow_n .OR. nest_bound_n ) THEN |
---|
478 | f_mg(:,nyn_mg(l)+1,:) = f_mg(:,nyn_mg(l),:) |
---|
479 | ENDIF |
---|
480 | IF ( inflow_s .OR. outflow_s .OR. nest_bound_s ) THEN |
---|
481 | f_mg(:,nys_mg(l)-1,:) = f_mg(:,nys_mg(l),:) |
---|
482 | ENDIF |
---|
483 | ENDIF |
---|
484 | |
---|
485 | ! |
---|
486 | !-- Boundary conditions at bottom and top of the domain. |
---|
487 | !-- These points are not handled by the above loop. Points may be within |
---|
488 | !-- buildings, but that doesn't matter. Remark: f_mg is ordered sequentielly |
---|
489 | !-- after interpolation on coarse grid (is ordered in odd-even blocks further |
---|
490 | !-- below). |
---|
491 | IF ( ibc_p_b == 1 ) THEN |
---|
492 | f_mg(nzb,:,: ) = f_mg(nzb+1,:,:) |
---|
493 | ELSE |
---|
494 | f_mg(nzb,:,: ) = 0.0_wp |
---|
495 | ENDIF |
---|
496 | |
---|
497 | IF ( ibc_p_t == 1 ) THEN |
---|
498 | f_mg(nzt_mg(l)+1,:,: ) = f_mg(nzt_mg(l),:,:) |
---|
499 | ELSE |
---|
500 | f_mg(nzt_mg(l)+1,:,: ) = 0.0_wp |
---|
501 | ENDIF |
---|
502 | |
---|
503 | CALL cpu_log( log_point_s(54), 'restrict', 'stop' ) |
---|
504 | ! |
---|
505 | !-- Since residual is in sequential order after interpolation, an additional |
---|
506 | !-- sorting in odd-even blocks along z dimension is required at this point. |
---|
507 | CALL sort_k_to_even_odd_blocks( f_mg , l) |
---|
508 | |
---|
509 | END SUBROUTINE restrict |
---|
510 | |
---|
511 | |
---|
512 | !------------------------------------------------------------------------------! |
---|
513 | ! Description: |
---|
514 | ! ------------ |
---|
515 | !> Interpolates the correction of the perturbation pressure |
---|
516 | !> to the next finer grid. |
---|
517 | !------------------------------------------------------------------------------! |
---|
518 | SUBROUTINE prolong( p, temp ) |
---|
519 | |
---|
520 | |
---|
521 | USE control_parameters, & |
---|
522 | ONLY: bc_lr_cyc, bc_ns_cyc, grid_level, ibc_p_b, ibc_p_t, inflow_l,& |
---|
523 | inflow_n, inflow_r, inflow_s, nest_bound_l, nest_bound_n, & |
---|
524 | nest_bound_r, nest_bound_s, outflow_l, outflow_n, & |
---|
525 | outflow_r, outflow_s |
---|
526 | |
---|
527 | USE indices, & |
---|
528 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
---|
529 | |
---|
530 | IMPLICIT NONE |
---|
531 | |
---|
532 | INTEGER(iwp) :: i !< index variable along x on coarser grid level |
---|
533 | INTEGER(iwp) :: j !< index variable along y on coarser grid level |
---|
534 | INTEGER(iwp) :: k !< index variable along z on coarser grid level |
---|
535 | INTEGER(iwp) :: l !< index indicating finer grid level |
---|
536 | INTEGER(iwp) :: kp1 !< index variable along z |
---|
537 | INTEGER(iwp) :: ke !< index for prolog even |
---|
538 | INTEGER(iwp) :: ko !< index for prolog odd |
---|
539 | |
---|
540 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level-1)+1, & |
---|
541 | nys_mg(grid_level-1)-1:nyn_mg(grid_level-1)+1, & |
---|
542 | nxl_mg(grid_level-1)-1:nxr_mg(grid_level-1)+1 ) :: & |
---|
543 | p !< perturbation pressure on coarser grid level |
---|
544 | |
---|
545 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
---|
546 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
---|
547 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: & |
---|
548 | temp !< perturbation pressure on finer grid level |
---|
549 | |
---|
550 | |
---|
551 | CALL cpu_log( log_point_s(55), 'prolong', 'start' ) |
---|
552 | |
---|
553 | ! |
---|
554 | !-- First, store elements of the coarser grid on the next finer grid |
---|
555 | l = grid_level |
---|
556 | ind_even_odd = even_odd_level(grid_level-1) |
---|
557 | |
---|
558 | !$OMP PARALLEL PRIVATE (i,j,k,kp1,ke,ko) |
---|
559 | !$OMP DO |
---|
560 | DO i = nxl_mg(l-1), nxr_mg(l-1) |
---|
561 | DO j = nys_mg(l-1), nyn_mg(l-1) |
---|
562 | |
---|
563 | !DIR$ IVDEP |
---|
564 | DO k = ind_even_odd+1, nzt_mg(l-1) |
---|
565 | kp1 = k - ind_even_odd |
---|
566 | ke = 2 * ( k-ind_even_odd - 1 ) + 1 |
---|
567 | ko = 2 * k - 1 |
---|
568 | ! |
---|
569 | !-- Points of the coarse grid are directly stored on the next finer |
---|
570 | !-- grid |
---|
571 | temp(ko,2*j,2*i) = p(k,j,i) |
---|
572 | ! |
---|
573 | !-- Points between two coarse-grid points |
---|
574 | temp(ko,2*j,2*i+1) = 0.5_wp * ( p(k,j,i) + p(k,j,i+1) ) |
---|
575 | temp(ko,2*j+1,2*i) = 0.5_wp * ( p(k,j,i) + p(k,j+1,i) ) |
---|
576 | temp(ke,2*j,2*i) = 0.5_wp * ( p(k,j,i) + p(kp1,j,i) ) |
---|
577 | ! |
---|
578 | !-- Points in the center of the planes stretched by four points |
---|
579 | !-- of the coarse grid cube |
---|
580 | temp(ko,2*j+1,2*i+1) = 0.25_wp * ( p(k,j,i) + p(k,j,i+1) + & |
---|
581 | p(k,j+1,i) + p(k,j+1,i+1) ) |
---|
582 | temp(ke,2*j,2*i+1) = 0.25_wp * ( p(k,j,i) + p(k,j,i+1) + & |
---|
583 | p(kp1,j,i) + p(kp1,j,i+1) ) |
---|
584 | temp(ke,2*j+1,2*i) = 0.25_wp * ( p(k,j,i) + p(k,j+1,i) + & |
---|
585 | p(kp1,j,i) + p(kp1,j+1,i) ) |
---|
586 | ! |
---|
587 | !-- Points in the middle of coarse grid cube |
---|
588 | temp(ke,2*j+1,2*i+1) = 0.125_wp * & |
---|
589 | ( p(k,j,i) + p(k,j,i+1) + & |
---|
590 | p(k,j+1,i) + p(k,j+1,i+1) + & |
---|
591 | p(kp1,j,i) + p(kp1,j,i+1) + & |
---|
592 | p(kp1,j+1,i) + p(kp1,j+1,i+1) ) |
---|
593 | |
---|
594 | ENDDO |
---|
595 | |
---|
596 | !DIR$ IVDEP |
---|
597 | DO k = nzb+1, ind_even_odd |
---|
598 | kp1 = k + ind_even_odd + 1 |
---|
599 | ke = 2 * k |
---|
600 | ko = 2 * ( k + ind_even_odd ) |
---|
601 | ! |
---|
602 | !-- Points of the coarse grid are directly stored on the next finer |
---|
603 | !-- grid |
---|
604 | temp(ko,2*j,2*i) = p(k,j,i) |
---|
605 | ! |
---|
606 | !-- Points between two coarse-grid points |
---|
607 | temp(ko,2*j,2*i+1) = 0.5_wp * ( p(k,j,i) + p(k,j,i+1) ) |
---|
608 | temp(ko,2*j+1,2*i) = 0.5_wp * ( p(k,j,i) + p(k,j+1,i) ) |
---|
609 | temp(ke,2*j,2*i) = 0.5_wp * ( p(k,j,i) + p(kp1,j,i) ) |
---|
610 | ! |
---|
611 | !-- Points in the center of the planes stretched by four points |
---|
612 | !-- of the coarse grid cube |
---|
613 | temp(ko,2*j+1,2*i+1) = 0.25_wp * ( p(k,j,i) + p(k,j,i+1) + & |
---|
614 | p(k,j+1,i) + p(k,j+1,i+1) ) |
---|
615 | temp(ke,2*j,2*i+1) = 0.25_wp * ( p(k,j,i) + p(k,j,i+1) + & |
---|
616 | p(kp1,j,i) + p(kp1,j,i+1) ) |
---|
617 | temp(ke,2*j+1,2*i) = 0.25_wp * ( p(k,j,i) + p(k,j+1,i) + & |
---|
618 | p(kp1,j,i) + p(kp1,j+1,i) ) |
---|
619 | ! |
---|
620 | !-- Points in the middle of coarse grid cube |
---|
621 | temp(ke,2*j+1,2*i+1) = 0.125_wp * & |
---|
622 | ( p(k,j,i) + p(k,j,i+1) + & |
---|
623 | p(k,j+1,i) + p(k,j+1,i+1) + & |
---|
624 | p(kp1,j,i) + p(kp1,j,i+1) + & |
---|
625 | p(kp1,j+1,i) + p(kp1,j+1,i+1) ) |
---|
626 | |
---|
627 | ENDDO |
---|
628 | |
---|
629 | ENDDO |
---|
630 | ENDDO |
---|
631 | !$OMP END PARALLEL |
---|
632 | |
---|
633 | ind_even_odd = even_odd_level(grid_level) |
---|
634 | ! |
---|
635 | !-- Horizontal boundary conditions |
---|
636 | CALL exchange_horiz( temp, 1) |
---|
637 | |
---|
638 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
639 | IF ( inflow_l .OR. outflow_l .OR. nest_bound_l ) THEN |
---|
640 | temp(:,:,nxl_mg(l)-1) = temp(:,:,nxl_mg(l)) |
---|
641 | ENDIF |
---|
642 | IF ( inflow_r .OR. outflow_r .OR. nest_bound_r ) THEN |
---|
643 | temp(:,:,nxr_mg(l)+1) = temp(:,:,nxr_mg(l)) |
---|
644 | ENDIF |
---|
645 | ENDIF |
---|
646 | |
---|
647 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
648 | IF ( inflow_n .OR. outflow_n .OR. nest_bound_n ) THEN |
---|
649 | temp(:,nyn_mg(l)+1,:) = temp(:,nyn_mg(l),:) |
---|
650 | ENDIF |
---|
651 | IF ( inflow_s .OR. outflow_s .OR. nest_bound_s ) THEN |
---|
652 | temp(:,nys_mg(l)-1,:) = temp(:,nys_mg(l),:) |
---|
653 | ENDIF |
---|
654 | ENDIF |
---|
655 | |
---|
656 | ! |
---|
657 | !-- Bottom and top boundary conditions |
---|
658 | IF ( ibc_p_b == 1 ) THEN |
---|
659 | ! |
---|
660 | !-- equivalent to temp(nzb,:,: ) = temp(nzb+1,:,:) |
---|
661 | temp(nzb,:,: ) = temp(ind_even_odd+1,:,:) |
---|
662 | ELSE |
---|
663 | temp(nzb,:,: ) = 0.0_wp |
---|
664 | ENDIF |
---|
665 | |
---|
666 | IF ( ibc_p_t == 1 ) THEN |
---|
667 | ! |
---|
668 | !-- equivalent to temp(nzt_mg(l)+1,:,: ) = temp(nzt_mg(l),:,:) |
---|
669 | temp(nzt_mg(l)+1,:,: ) = temp(ind_even_odd,:,:) |
---|
670 | ELSE |
---|
671 | temp(nzt_mg(l)+1,:,: ) = 0.0_wp |
---|
672 | ENDIF |
---|
673 | |
---|
674 | CALL cpu_log( log_point_s(55), 'prolong', 'stop' ) |
---|
675 | |
---|
676 | END SUBROUTINE prolong |
---|
677 | |
---|
678 | |
---|
679 | !------------------------------------------------------------------------------! |
---|
680 | ! Description: |
---|
681 | ! ------------ |
---|
682 | !> Relaxation method for the multigrid scheme. A Gauss-Seidel iteration with |
---|
683 | !> 3D-Red-Black decomposition (GS-RB) is used. |
---|
684 | !------------------------------------------------------------------------------! |
---|
685 | SUBROUTINE redblack( f_mg, p_mg ) |
---|
686 | |
---|
687 | |
---|
688 | USE arrays_3d, & |
---|
689 | ONLY: f1_mg, f2_mg, f3_mg |
---|
690 | |
---|
691 | USE control_parameters, & |
---|
692 | ONLY: bc_lr_cyc, bc_ns_cyc, grid_level, ibc_p_b, ibc_p_t, inflow_l,& |
---|
693 | inflow_n, inflow_r, inflow_s, nest_bound_l, nest_bound_n, & |
---|
694 | nest_bound_r, nest_bound_s, ngsrb, outflow_l, outflow_n, & |
---|
695 | outflow_r, outflow_s |
---|
696 | |
---|
697 | USE grid_variables, & |
---|
698 | ONLY: ddx2_mg, ddy2_mg |
---|
699 | |
---|
700 | USE indices, & |
---|
701 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
---|
702 | |
---|
703 | IMPLICIT NONE |
---|
704 | |
---|
705 | INTEGER(iwp) :: color !< grid point color, either red or black |
---|
706 | INTEGER(iwp) :: i !< index variable along x |
---|
707 | INTEGER(iwp) :: ic !< index variable along x |
---|
708 | INTEGER(iwp) :: j !< index variable along y |
---|
709 | INTEGER(iwp) :: jc !< index variable along y |
---|
710 | INTEGER(iwp) :: jj !< index variable along y |
---|
711 | INTEGER(iwp) :: k !< index variable along z |
---|
712 | INTEGER(iwp) :: l !< grid level |
---|
713 | INTEGER(iwp) :: n !< loop variable GauÃ-Seidel iterations |
---|
714 | INTEGER(iwp) :: km1 !< index variable (k-1) |
---|
715 | INTEGER(iwp) :: kp1 !< index variable (k+1) |
---|
716 | |
---|
717 | LOGICAL :: unroll !< flag indicating whether loop unrolling is possible |
---|
718 | |
---|
719 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
---|
720 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
---|
721 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: & |
---|
722 | f_mg !< residual of perturbation pressure |
---|
723 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
---|
724 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
---|
725 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: & |
---|
726 | p_mg !< perturbation pressure |
---|
727 | |
---|
728 | l = grid_level |
---|
729 | |
---|
730 | unroll = ( MOD( nyn_mg(l)-nys_mg(l)+1, 4 ) == 0 .AND. & |
---|
731 | MOD( nxr_mg(l)-nxl_mg(l)+1, 2 ) == 0 ) |
---|
732 | |
---|
733 | DO n = 1, ngsrb |
---|
734 | |
---|
735 | DO color = 1, 2 |
---|
736 | |
---|
737 | IF ( .NOT. unroll ) THEN |
---|
738 | |
---|
739 | CALL cpu_log( log_point_s(36), 'redblack_no_unroll_f', 'start' ) |
---|
740 | ! |
---|
741 | !-- Without unrolling of loops, no cache optimization |
---|
742 | !$OMP PARALLEL PRIVATE (i,j,k,km1,kp1) |
---|
743 | !$OMP DO |
---|
744 | DO i = nxl_mg(l), nxr_mg(l), 2 |
---|
745 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
---|
746 | !DIR$ IVDEP |
---|
747 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
748 | km1 = k-ind_even_odd-1 |
---|
749 | kp1 = k-ind_even_odd |
---|
750 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
---|
751 | ddx2_mg(l) * & |
---|
752 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
---|
753 | + ddy2_mg(l) * & |
---|
754 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
---|
755 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
---|
756 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
---|
757 | - f_mg(k,j,i) ) |
---|
758 | ENDDO |
---|
759 | ENDDO |
---|
760 | ENDDO |
---|
761 | |
---|
762 | !$OMP DO |
---|
763 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
---|
764 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
---|
765 | !DIR$ IVDEP |
---|
766 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
767 | km1 = k-ind_even_odd-1 |
---|
768 | kp1 = k-ind_even_odd |
---|
769 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
---|
770 | ddx2_mg(l) * & |
---|
771 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
---|
772 | + ddy2_mg(l) * & |
---|
773 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
---|
774 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
---|
775 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
---|
776 | - f_mg(k,j,i) ) |
---|
777 | ENDDO |
---|
778 | ENDDO |
---|
779 | ENDDO |
---|
780 | |
---|
781 | !$OMP DO |
---|
782 | DO i = nxl_mg(l), nxr_mg(l), 2 |
---|
783 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
---|
784 | !DIR$ IVDEP |
---|
785 | DO k = nzb+1, ind_even_odd |
---|
786 | km1 = k+ind_even_odd |
---|
787 | kp1 = k+ind_even_odd+1 |
---|
788 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
---|
789 | ddx2_mg(l) * & |
---|
790 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
---|
791 | + ddy2_mg(l) * & |
---|
792 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
---|
793 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
---|
794 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
---|
795 | - f_mg(k,j,i) ) |
---|
796 | ENDDO |
---|
797 | ENDDO |
---|
798 | ENDDO |
---|
799 | |
---|
800 | !$OMP DO |
---|
801 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
---|
802 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
---|
803 | !DIR$ IVDEP |
---|
804 | DO k = nzb+1, ind_even_odd |
---|
805 | km1 = k+ind_even_odd |
---|
806 | kp1 = k+ind_even_odd+1 |
---|
807 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
---|
808 | ddx2_mg(l) * & |
---|
809 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
---|
810 | + ddy2_mg(l) * & |
---|
811 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
---|
812 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
---|
813 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
---|
814 | - f_mg(k,j,i) ) |
---|
815 | ENDDO |
---|
816 | ENDDO |
---|
817 | ENDDO |
---|
818 | !$OMP END PARALLEL |
---|
819 | |
---|
820 | CALL cpu_log( log_point_s(36), 'redblack_no_unroll_f', 'stop' ) |
---|
821 | |
---|
822 | ELSE |
---|
823 | ! |
---|
824 | !-- Loop unrolling along y, only one i loop for better cache use |
---|
825 | CALL cpu_log( log_point_s(38), 'redblack_unroll_f', 'start' ) |
---|
826 | |
---|
827 | !$OMP PARALLEL PRIVATE (i,j,k,ic,jc,km1,kp1,jj) |
---|
828 | !$OMP DO |
---|
829 | DO ic = nxl_mg(l), nxr_mg(l), 2 |
---|
830 | DO jc = nys_mg(l), nyn_mg(l), 4 |
---|
831 | i = ic |
---|
832 | jj = jc+2-color |
---|
833 | !DIR$ IVDEP |
---|
834 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
835 | km1 = k-ind_even_odd-1 |
---|
836 | kp1 = k-ind_even_odd |
---|
837 | j = jj |
---|
838 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
---|
839 | ddx2_mg(l) * & |
---|
840 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
---|
841 | + ddy2_mg(l) * & |
---|
842 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
---|
843 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
---|
844 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
---|
845 | - f_mg(k,j,i) ) |
---|
846 | j = jj+2 |
---|
847 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
---|
848 | ddx2_mg(l) * & |
---|
849 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
---|
850 | + ddy2_mg(l) * & |
---|
851 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
---|
852 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
---|
853 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
---|
854 | - f_mg(k,j,i) ) |
---|
855 | ENDDO |
---|
856 | |
---|
857 | i = ic+1 |
---|
858 | jj = jc+color-1 |
---|
859 | !DIR$ IVDEP |
---|
860 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
861 | km1 = k-ind_even_odd-1 |
---|
862 | kp1 = k-ind_even_odd |
---|
863 | j = jj |
---|
864 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
---|
865 | ddx2_mg(l) * & |
---|
866 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
---|
867 | + ddy2_mg(l) * & |
---|
868 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
---|
869 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
---|
870 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
---|
871 | - f_mg(k,j,i) ) |
---|
872 | j = jj+2 |
---|
873 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
---|
874 | ddx2_mg(l) * & |
---|
875 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
---|
876 | + ddy2_mg(l) * & |
---|
877 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
---|
878 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
---|
879 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
---|
880 | - f_mg(k,j,i) ) |
---|
881 | ENDDO |
---|
882 | |
---|
883 | i = ic |
---|
884 | jj = jc+color-1 |
---|
885 | !DIR$ IVDEP |
---|
886 | DO k = nzb+1, ind_even_odd |
---|
887 | km1 = k+ind_even_odd |
---|
888 | kp1 = k+ind_even_odd+1 |
---|
889 | j = jj |
---|
890 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
---|
891 | ddx2_mg(l) * & |
---|
892 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
---|
893 | + ddy2_mg(l) * & |
---|
894 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
---|
895 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
---|
896 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
---|
897 | - f_mg(k,j,i) ) |
---|
898 | j = jj+2 |
---|
899 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
---|
900 | ddx2_mg(l) * & |
---|
901 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
---|
902 | + ddy2_mg(l) * & |
---|
903 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
---|
904 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
---|
905 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
---|
906 | - f_mg(k,j,i) ) |
---|
907 | ENDDO |
---|
908 | |
---|
909 | i = ic+1 |
---|
910 | jj = jc+2-color |
---|
911 | !DIR$ IVDEP |
---|
912 | DO k = nzb+1, ind_even_odd |
---|
913 | km1 = k+ind_even_odd |
---|
914 | kp1 = k+ind_even_odd+1 |
---|
915 | j = jj |
---|
916 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
---|
917 | ddx2_mg(l) * & |
---|
918 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
---|
919 | + ddy2_mg(l) * & |
---|
920 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
---|
921 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
---|
922 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
---|
923 | - f_mg(k,j,i) ) |
---|
924 | j = jj+2 |
---|
925 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
---|
926 | ddx2_mg(l) * & |
---|
927 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
---|
928 | + ddy2_mg(l) * & |
---|
929 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
---|
930 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
---|
931 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
---|
932 | - f_mg(k,j,i) ) |
---|
933 | ENDDO |
---|
934 | |
---|
935 | ENDDO |
---|
936 | ENDDO |
---|
937 | !$OMP END PARALLEL |
---|
938 | |
---|
939 | CALL cpu_log( log_point_s(38), 'redblack_unroll_f', 'stop' ) |
---|
940 | |
---|
941 | ENDIF |
---|
942 | |
---|
943 | ! |
---|
944 | !-- Horizontal boundary conditions |
---|
945 | CALL special_exchange_horiz( p_mg, color ) |
---|
946 | |
---|
947 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
948 | IF ( inflow_l .OR. outflow_l .OR. nest_bound_l ) THEN |
---|
949 | p_mg(:,:,nxl_mg(l)-1) = p_mg(:,:,nxl_mg(l)) |
---|
950 | ENDIF |
---|
951 | IF ( inflow_r .OR. outflow_r .OR. nest_bound_r ) THEN |
---|
952 | p_mg(:,:,nxr_mg(l)+1) = p_mg(:,:,nxr_mg(l)) |
---|
953 | ENDIF |
---|
954 | ENDIF |
---|
955 | |
---|
956 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
957 | IF ( inflow_n .OR. outflow_n .OR. nest_bound_n ) THEN |
---|
958 | p_mg(:,nyn_mg(l)+1,:) = p_mg(:,nyn_mg(l),:) |
---|
959 | ENDIF |
---|
960 | IF ( inflow_s .OR. outflow_s .OR. nest_bound_s ) THEN |
---|
961 | p_mg(:,nys_mg(l)-1,:) = p_mg(:,nys_mg(l),:) |
---|
962 | ENDIF |
---|
963 | ENDIF |
---|
964 | |
---|
965 | ! |
---|
966 | !-- Bottom and top boundary conditions |
---|
967 | IF ( ibc_p_b == 1 ) THEN |
---|
968 | ! |
---|
969 | !-- equivalent to p_mg(nzb,:,: ) = p_mg(nzb+1,:,:) |
---|
970 | p_mg(nzb,:,: ) = p_mg(ind_even_odd+1,:,:) |
---|
971 | ELSE |
---|
972 | p_mg(nzb,:,: ) = 0.0_wp |
---|
973 | ENDIF |
---|
974 | |
---|
975 | IF ( ibc_p_t == 1 ) THEN |
---|
976 | ! |
---|
977 | !-- equivalent to p_mg(nzt_mg(l)+1,:,: ) = p_mg(nzt_mg(l),:,:) |
---|
978 | p_mg(nzt_mg(l)+1,:,: ) = p_mg(ind_even_odd,:,:) |
---|
979 | ELSE |
---|
980 | p_mg(nzt_mg(l)+1,:,: ) = 0.0_wp |
---|
981 | ENDIF |
---|
982 | |
---|
983 | ENDDO |
---|
984 | |
---|
985 | ENDDO |
---|
986 | |
---|
987 | END SUBROUTINE redblack |
---|
988 | |
---|
989 | |
---|
990 | !------------------------------------------------------------------------------! |
---|
991 | ! Description: |
---|
992 | ! ------------ |
---|
993 | !> Sort k-Dimension from sequential into blocks of even and odd. |
---|
994 | !> This is required to vectorize the red-black subroutine. |
---|
995 | !> Version for 3D-REAL arrays |
---|
996 | !------------------------------------------------------------------------------! |
---|
997 | SUBROUTINE sort_k_to_even_odd_blocks( p_mg , glevel ) |
---|
998 | |
---|
999 | |
---|
1000 | USE control_parameters, & |
---|
1001 | ONLY: grid_level |
---|
1002 | |
---|
1003 | USE indices, & |
---|
1004 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
---|
1005 | |
---|
1006 | IMPLICIT NONE |
---|
1007 | |
---|
1008 | INTEGER(iwp), INTENT(IN) :: glevel !< grid level |
---|
1009 | |
---|
1010 | REAL(wp), DIMENSION(nzb:nzt_mg(glevel)+1, & |
---|
1011 | nys_mg(glevel)-1:nyn_mg(glevel)+1, & |
---|
1012 | nxl_mg(glevel)-1:nxr_mg(glevel)+1) :: & |
---|
1013 | p_mg !< array to be sorted |
---|
1014 | ! |
---|
1015 | !-- Local variables |
---|
1016 | INTEGER(iwp) :: i !< index variable along x |
---|
1017 | INTEGER(iwp) :: j !< index variable along y |
---|
1018 | INTEGER(iwp) :: k !< index variable along z |
---|
1019 | INTEGER(iwp) :: l !< grid level |
---|
1020 | INTEGER(iwp) :: ind !< index variable along z |
---|
1021 | REAL(wp), DIMENSION(nzb:nzt_mg(glevel)+1) :: tmp !< odd-even sorted temporary array |
---|
1022 | |
---|
1023 | |
---|
1024 | CALL cpu_log( log_point_s(52), 'sort_k_to_even_odd', 'start' ) |
---|
1025 | |
---|
1026 | l = glevel |
---|
1027 | ind_even_odd = even_odd_level(l) |
---|
1028 | |
---|
1029 | !$OMP PARALLEL PRIVATE (i,j,k,ind,tmp) |
---|
1030 | !$OMP DO |
---|
1031 | DO i = nxl_mg(l)-1, nxr_mg(l)+1 |
---|
1032 | DO j = nys_mg(l)-1, nyn_mg(l)+1 |
---|
1033 | |
---|
1034 | ! |
---|
1035 | !-- Sort the data with even k index |
---|
1036 | ind = nzb-1 |
---|
1037 | DO k = nzb, nzt_mg(l), 2 |
---|
1038 | ind = ind + 1 |
---|
1039 | tmp(ind) = p_mg(k,j,i) |
---|
1040 | ENDDO |
---|
1041 | ! |
---|
1042 | !-- Sort the data with odd k index |
---|
1043 | DO k = nzb+1, nzt_mg(l)+1, 2 |
---|
1044 | ind = ind + 1 |
---|
1045 | tmp(ind) = p_mg(k,j,i) |
---|
1046 | ENDDO |
---|
1047 | |
---|
1048 | p_mg(:,j,i) = tmp |
---|
1049 | |
---|
1050 | ENDDO |
---|
1051 | ENDDO |
---|
1052 | !$OMP END PARALLEL |
---|
1053 | |
---|
1054 | CALL cpu_log( log_point_s(52), 'sort_k_to_even_odd', 'stop' ) |
---|
1055 | |
---|
1056 | END SUBROUTINE sort_k_to_even_odd_blocks |
---|
1057 | |
---|
1058 | |
---|
1059 | !------------------------------------------------------------------------------! |
---|
1060 | ! Description: |
---|
1061 | ! ------------ |
---|
1062 | !> Sort k-Dimension from sequential into blocks of even and odd. |
---|
1063 | !> This is required to vectorize the red-black subroutine. |
---|
1064 | !> Version for 1D-REAL arrays |
---|
1065 | !------------------------------------------------------------------------------! |
---|
1066 | SUBROUTINE sort_k_to_even_odd_blocks_1d( f_mg, f_mg_b, glevel ) |
---|
1067 | |
---|
1068 | |
---|
1069 | USE indices, & |
---|
1070 | ONLY: nzb, nzt_mg |
---|
1071 | |
---|
1072 | IMPLICIT NONE |
---|
1073 | |
---|
1074 | INTEGER(iwp), INTENT(IN) :: glevel !< grid level |
---|
1075 | |
---|
1076 | REAL(wp), DIMENSION(nzb+1:nzt_mg(glevel)) :: f_mg !< 1D input array |
---|
1077 | REAL(wp), DIMENSION(nzb:nzt_mg(glevel)+1) :: f_mg_b !< 1D output array |
---|
1078 | |
---|
1079 | ! |
---|
1080 | !-- Local variables |
---|
1081 | INTEGER(iwp) :: ind !< index variable along z |
---|
1082 | INTEGER(iwp) :: k !< index variable along z |
---|
1083 | |
---|
1084 | |
---|
1085 | ind = nzb - 1 |
---|
1086 | ! |
---|
1087 | !-- Sort the data with even k index |
---|
1088 | DO k = nzb, nzt_mg(glevel), 2 |
---|
1089 | ind = ind + 1 |
---|
1090 | IF ( k >= nzb+1 .AND. k <= nzt_mg(glevel) ) THEN |
---|
1091 | f_mg_b(ind) = f_mg(k) |
---|
1092 | ENDIF |
---|
1093 | ENDDO |
---|
1094 | ! |
---|
1095 | !-- Sort the data with odd k index |
---|
1096 | DO k = nzb+1, nzt_mg(glevel)+1, 2 |
---|
1097 | ind = ind + 1 |
---|
1098 | IF( k >= nzb+1 .AND. k <= nzt_mg(glevel) ) THEN |
---|
1099 | f_mg_b(ind) = f_mg(k) |
---|
1100 | ENDIF |
---|
1101 | ENDDO |
---|
1102 | |
---|
1103 | END SUBROUTINE sort_k_to_even_odd_blocks_1d |
---|
1104 | |
---|
1105 | |
---|
1106 | !------------------------------------------------------------------------------! |
---|
1107 | ! Description: |
---|
1108 | ! ------------ |
---|
1109 | !> Sort k-Dimension from sequential into blocks of even and odd. |
---|
1110 | !> This is required to vectorize the red-black subroutine. |
---|
1111 | !> Version for 2D-INTEGER arrays |
---|
1112 | !------------------------------------------------------------------------------! |
---|
1113 | SUBROUTINE sort_k_to_even_odd_blocks_int( i_mg , glevel ) |
---|
1114 | |
---|
1115 | |
---|
1116 | USE control_parameters, & |
---|
1117 | ONLY: grid_level |
---|
1118 | |
---|
1119 | USE indices, & |
---|
1120 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
---|
1121 | |
---|
1122 | IMPLICIT NONE |
---|
1123 | |
---|
1124 | INTEGER(iwp), INTENT(IN) :: glevel !< grid level |
---|
1125 | |
---|
1126 | INTEGER(iwp), DIMENSION(nzb:nzt_mg(glevel)+1, & |
---|
1127 | nys_mg(glevel)-1:nyn_mg(glevel)+1, & |
---|
1128 | nxl_mg(glevel)-1:nxr_mg(glevel)+1) :: & |
---|
1129 | i_mg !< array to be sorted |
---|
1130 | ! |
---|
1131 | !-- Local variables |
---|
1132 | INTEGER(iwp) :: i !< index variabel along x |
---|
1133 | INTEGER(iwp) :: j !< index variable along y |
---|
1134 | INTEGER(iwp) :: k !< index variable along z |
---|
1135 | INTEGER(iwp) :: l !< grid level |
---|
1136 | INTEGER(iwp) :: ind !< index variable along z |
---|
1137 | INTEGER(iwp),DIMENSION(nzb:nzt_mg(glevel)+1) :: tmp !< temporary odd-even sorted array |
---|
1138 | |
---|
1139 | |
---|
1140 | CALL cpu_log( log_point_s(52), 'sort_k_to_even_odd', 'start' ) |
---|
1141 | |
---|
1142 | l = glevel |
---|
1143 | ind_even_odd = even_odd_level(l) |
---|
1144 | |
---|
1145 | DO i = nxl_mg(l)-1, nxr_mg(l)+1 |
---|
1146 | DO j = nys_mg(l)-1, nyn_mg(l)+1 |
---|
1147 | |
---|
1148 | ! |
---|
1149 | !-- Sort the data with even k index |
---|
1150 | ind = nzb-1 |
---|
1151 | DO k = nzb, nzt_mg(l), 2 |
---|
1152 | ind = ind + 1 |
---|
1153 | tmp(ind) = i_mg(k,j,i) |
---|
1154 | ENDDO |
---|
1155 | ! |
---|
1156 | !++ ATTENTION: Check reason for this error. Remove it or replace WRITE |
---|
1157 | !++ by PALM message |
---|
1158 | #if defined ( __parallel ) |
---|
1159 | IF ( ind /= ind_even_odd ) THEN |
---|
1160 | WRITE (0,*) 'ERROR ==> illegal ind_even_odd ',ind,ind_even_odd,l |
---|
1161 | CALL MPI_ABORT(MPI_COMM_WORLD,i,j) |
---|
1162 | ENDIF |
---|
1163 | #endif |
---|
1164 | ! |
---|
1165 | !-- Sort the data with odd k index |
---|
1166 | DO k = nzb+1, nzt_mg(l)+1, 2 |
---|
1167 | ind = ind + 1 |
---|
1168 | tmp(ind) = i_mg(k,j,i) |
---|
1169 | ENDDO |
---|
1170 | |
---|
1171 | i_mg(:,j,i) = tmp |
---|
1172 | |
---|
1173 | ENDDO |
---|
1174 | ENDDO |
---|
1175 | |
---|
1176 | CALL cpu_log( log_point_s(52), 'sort_k_to_even_odd', 'stop' ) |
---|
1177 | |
---|
1178 | END SUBROUTINE sort_k_to_even_odd_blocks_int |
---|
1179 | |
---|
1180 | |
---|
1181 | !------------------------------------------------------------------------------! |
---|
1182 | ! Description: |
---|
1183 | ! ------------ |
---|
1184 | !> Sort k-dimension from blocks of even and odd into sequential |
---|
1185 | !------------------------------------------------------------------------------! |
---|
1186 | SUBROUTINE sort_k_to_sequential( p_mg ) |
---|
1187 | |
---|
1188 | |
---|
1189 | USE control_parameters, & |
---|
1190 | ONLY: grid_level |
---|
1191 | |
---|
1192 | USE indices, & |
---|
1193 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
---|
1194 | |
---|
1195 | IMPLICIT NONE |
---|
1196 | |
---|
1197 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
---|
1198 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
---|
1199 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: & |
---|
1200 | p_mg !< array to be sorted |
---|
1201 | ! |
---|
1202 | !-- Local variables |
---|
1203 | INTEGER(iwp) :: i !< index variable along x |
---|
1204 | INTEGER(iwp) :: j !< index variable along y |
---|
1205 | INTEGER(iwp) :: k !< index variable along z |
---|
1206 | INTEGER(iwp) :: l !< grid level |
---|
1207 | INTEGER(iwp) :: ind !< index variable along z |
---|
1208 | |
---|
1209 | REAL(wp),DIMENSION(nzb:nzt_mg(grid_level)+1) :: tmp |
---|
1210 | |
---|
1211 | |
---|
1212 | l = grid_level |
---|
1213 | |
---|
1214 | !$OMP PARALLEL PRIVATE (i,j,k,ind,tmp) |
---|
1215 | !$OMP DO |
---|
1216 | DO i = nxl_mg(l)-1, nxr_mg(l)+1 |
---|
1217 | DO j = nys_mg(l)-1, nyn_mg(l)+1 |
---|
1218 | |
---|
1219 | ind = nzb - 1 |
---|
1220 | tmp = p_mg(:,j,i) |
---|
1221 | DO k = nzb, nzt_mg(l), 2 |
---|
1222 | ind = ind + 1 |
---|
1223 | p_mg(k,j,i) = tmp(ind) |
---|
1224 | ENDDO |
---|
1225 | |
---|
1226 | DO k = nzb+1, nzt_mg(l)+1, 2 |
---|
1227 | ind = ind + 1 |
---|
1228 | p_mg(k,j,i) = tmp(ind) |
---|
1229 | ENDDO |
---|
1230 | ENDDO |
---|
1231 | ENDDO |
---|
1232 | !$OMP END PARALLEL |
---|
1233 | |
---|
1234 | END SUBROUTINE sort_k_to_sequential |
---|
1235 | |
---|
1236 | |
---|
1237 | !------------------------------------------------------------------------------! |
---|
1238 | ! Description: |
---|
1239 | ! ------------ |
---|
1240 | !> Gather subdomain data from all PEs. |
---|
1241 | !------------------------------------------------------------------------------! |
---|
1242 | SUBROUTINE mg_gather( f2, f2_sub ) |
---|
1243 | |
---|
1244 | USE control_parameters, & |
---|
1245 | ONLY: grid_level |
---|
1246 | |
---|
1247 | USE cpulog, & |
---|
1248 | ONLY: cpu_log, log_point_s |
---|
1249 | |
---|
1250 | USE indices, & |
---|
1251 | ONLY: mg_loc_ind, nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
---|
1252 | |
---|
1253 | IMPLICIT NONE |
---|
1254 | |
---|
1255 | INTEGER(iwp) :: i !< |
---|
1256 | INTEGER(iwp) :: il !< |
---|
1257 | INTEGER(iwp) :: ir !< |
---|
1258 | INTEGER(iwp) :: j !< |
---|
1259 | INTEGER(iwp) :: jn !< |
---|
1260 | INTEGER(iwp) :: js !< |
---|
1261 | INTEGER(iwp) :: k !< |
---|
1262 | INTEGER(iwp) :: nwords !< |
---|
1263 | |
---|
1264 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
---|
1265 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
---|
1266 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: f2 !< |
---|
1267 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
---|
1268 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
---|
1269 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: f2_l !< |
---|
1270 | |
---|
1271 | REAL(wp), DIMENSION(nzb:mg_loc_ind(5,myid)+1, & |
---|
1272 | mg_loc_ind(3,myid)-1:mg_loc_ind(4,myid)+1, & |
---|
1273 | mg_loc_ind(1,myid)-1:mg_loc_ind(2,myid)+1) :: f2_sub !< |
---|
1274 | |
---|
1275 | |
---|
1276 | #if defined( __parallel ) |
---|
1277 | CALL cpu_log( log_point_s(34), 'mg_gather', 'start' ) |
---|
1278 | |
---|
1279 | f2_l = 0.0_wp |
---|
1280 | |
---|
1281 | ! |
---|
1282 | !-- Store the local subdomain array on the total array |
---|
1283 | js = mg_loc_ind(3,myid) |
---|
1284 | IF ( south_border_pe ) js = js - 1 |
---|
1285 | jn = mg_loc_ind(4,myid) |
---|
1286 | IF ( north_border_pe ) jn = jn + 1 |
---|
1287 | il = mg_loc_ind(1,myid) |
---|
1288 | IF ( left_border_pe ) il = il - 1 |
---|
1289 | ir = mg_loc_ind(2,myid) |
---|
1290 | IF ( right_border_pe ) ir = ir + 1 |
---|
1291 | DO i = il, ir |
---|
1292 | DO j = js, jn |
---|
1293 | DO k = nzb, nzt_mg(grid_level)+1 |
---|
1294 | f2_l(k,j,i) = f2_sub(k,j,i) |
---|
1295 | ENDDO |
---|
1296 | ENDDO |
---|
1297 | ENDDO |
---|
1298 | |
---|
1299 | ! |
---|
1300 | !-- Find out the number of array elements of the total array |
---|
1301 | nwords = SIZE( f2 ) |
---|
1302 | |
---|
1303 | ! |
---|
1304 | !-- Gather subdomain data from all PEs |
---|
1305 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
---|
1306 | CALL MPI_ALLREDUCE( f2_l(nzb,nys_mg(grid_level)-1,nxl_mg(grid_level)-1), & |
---|
1307 | f2(nzb,nys_mg(grid_level)-1,nxl_mg(grid_level)-1), & |
---|
1308 | nwords, MPI_REAL, MPI_SUM, comm2d, ierr ) |
---|
1309 | |
---|
1310 | CALL cpu_log( log_point_s(34), 'mg_gather', 'stop' ) |
---|
1311 | #endif |
---|
1312 | |
---|
1313 | END SUBROUTINE mg_gather |
---|
1314 | |
---|
1315 | |
---|
1316 | |
---|
1317 | !------------------------------------------------------------------------------! |
---|
1318 | ! Description: |
---|
1319 | ! ------------ |
---|
1320 | !> @todo It might be possible to improve the speed of this routine by using |
---|
1321 | !> non-blocking communication |
---|
1322 | !------------------------------------------------------------------------------! |
---|
1323 | SUBROUTINE mg_scatter( p2, p2_sub ) |
---|
1324 | |
---|
1325 | USE control_parameters, & |
---|
1326 | ONLY: grid_level |
---|
1327 | |
---|
1328 | USE cpulog, & |
---|
1329 | ONLY: cpu_log, log_point_s |
---|
1330 | |
---|
1331 | USE indices, & |
---|
1332 | ONLY: mg_loc_ind, nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
---|
1333 | |
---|
1334 | IMPLICIT NONE |
---|
1335 | |
---|
1336 | INTEGER(iwp) :: nwords !< |
---|
1337 | |
---|
1338 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level-1)+1, & |
---|
1339 | nys_mg(grid_level-1)-1:nyn_mg(grid_level-1)+1, & |
---|
1340 | nxl_mg(grid_level-1)-1:nxr_mg(grid_level-1)+1) :: p2 !< |
---|
1341 | |
---|
1342 | REAL(wp), DIMENSION(nzb:mg_loc_ind(5,myid)+1, & |
---|
1343 | mg_loc_ind(3,myid)-1:mg_loc_ind(4,myid)+1, & |
---|
1344 | mg_loc_ind(1,myid)-1:mg_loc_ind(2,myid)+1) :: p2_sub !< |
---|
1345 | |
---|
1346 | ! |
---|
1347 | !-- Find out the number of array elements of the subdomain array |
---|
1348 | nwords = SIZE( p2_sub ) |
---|
1349 | |
---|
1350 | #if defined( __parallel ) |
---|
1351 | CALL cpu_log( log_point_s(35), 'mg_scatter', 'start' ) |
---|
1352 | |
---|
1353 | p2_sub = p2(:,mg_loc_ind(3,myid)-1:mg_loc_ind(4,myid)+1, & |
---|
1354 | mg_loc_ind(1,myid)-1:mg_loc_ind(2,myid)+1) |
---|
1355 | |
---|
1356 | CALL cpu_log( log_point_s(35), 'mg_scatter', 'stop' ) |
---|
1357 | #endif |
---|
1358 | |
---|
1359 | END SUBROUTINE mg_scatter |
---|
1360 | |
---|
1361 | |
---|
1362 | !------------------------------------------------------------------------------! |
---|
1363 | ! Description: |
---|
1364 | ! ------------ |
---|
1365 | !> This is where the multigrid technique takes place. V- and W- Cycle are |
---|
1366 | !> implemented and steered by the parameter "gamma". Parameter "nue" determines |
---|
1367 | !> the convergence of the multigrid iterative solution. There are nue times |
---|
1368 | !> RB-GS iterations. It should be set to "1" or "2", considering the time effort |
---|
1369 | !> one would like to invest. Last choice shows a very good converging factor, |
---|
1370 | !> but leads to an increase in computing time. |
---|
1371 | !------------------------------------------------------------------------------! |
---|
1372 | RECURSIVE SUBROUTINE next_mg_level( f_mg, p_mg, p3, r ) |
---|
1373 | |
---|
1374 | USE control_parameters, & |
---|
1375 | ONLY: bc_lr_dirrad, bc_lr_raddir, bc_ns_dirrad, bc_ns_raddir, & |
---|
1376 | gamma_mg, grid_level, grid_level_count, ibc_p_b, ibc_p_t, & |
---|
1377 | inflow_l, inflow_n, inflow_r, inflow_s, maximum_grid_level, & |
---|
1378 | mg_switch_to_pe0_level, mg_switch_to_pe0, nest_domain, & |
---|
1379 | nest_bound_l, nest_bound_n, nest_bound_r, nest_bound_s, & |
---|
1380 | ngsrb, outflow_l, outflow_n, outflow_r, outflow_s |
---|
1381 | |
---|
1382 | USE indices, & |
---|
1383 | ONLY: mg_loc_ind, nxl, nxl_mg, nxr, nxr_mg, nys, nys_mg, nyn, & |
---|
1384 | nyn_mg, nzb, nzt, nzt_mg |
---|
1385 | |
---|
1386 | IMPLICIT NONE |
---|
1387 | |
---|
1388 | INTEGER(iwp) :: i !< index variable along x |
---|
1389 | INTEGER(iwp) :: j !< index variable along y |
---|
1390 | INTEGER(iwp) :: k !< index variable along z |
---|
1391 | INTEGER(iwp) :: nxl_mg_save !< |
---|
1392 | INTEGER(iwp) :: nxr_mg_save !< |
---|
1393 | INTEGER(iwp) :: nyn_mg_save !< |
---|
1394 | INTEGER(iwp) :: nys_mg_save !< |
---|
1395 | INTEGER(iwp) :: nzt_mg_save !< |
---|
1396 | |
---|
1397 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
---|
1398 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
---|
1399 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: f_mg !< |
---|
1400 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
---|
1401 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
---|
1402 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: p_mg !< |
---|
1403 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
---|
1404 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
---|
1405 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: p3 !< |
---|
1406 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
---|
1407 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
---|
1408 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: r !< |
---|
1409 | |
---|
1410 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level-1)+1, & |
---|
1411 | nys_mg(grid_level-1)-1:nyn_mg(grid_level-1)+1, & |
---|
1412 | nxl_mg(grid_level-1)-1:nxr_mg(grid_level-1)+1) :: f2 !< |
---|
1413 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level-1)+1, & |
---|
1414 | nys_mg(grid_level-1)-1:nyn_mg(grid_level-1)+1, & |
---|
1415 | nxl_mg(grid_level-1)-1:nxr_mg(grid_level-1)+1) :: p2 !< |
---|
1416 | |
---|
1417 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: f2_sub !< |
---|
1418 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: p2_sub !< |
---|
1419 | |
---|
1420 | ! |
---|
1421 | !-- Restriction to the coarsest grid |
---|
1422 | 10 IF ( grid_level == 1 ) THEN |
---|
1423 | |
---|
1424 | ! |
---|
1425 | !-- Solution on the coarsest grid. Double the number of Gauss-Seidel |
---|
1426 | !-- iterations in order to get a more accurate solution. |
---|
1427 | ngsrb = 2 * ngsrb |
---|
1428 | |
---|
1429 | ind_even_odd = even_odd_level(grid_level) |
---|
1430 | |
---|
1431 | CALL redblack( f_mg, p_mg ) |
---|
1432 | |
---|
1433 | ngsrb = ngsrb / 2 |
---|
1434 | |
---|
1435 | |
---|
1436 | ELSEIF ( grid_level /= 1 ) THEN |
---|
1437 | |
---|
1438 | grid_level_count(grid_level) = grid_level_count(grid_level) + 1 |
---|
1439 | |
---|
1440 | ! |
---|
1441 | !-- Solution on the actual grid level |
---|
1442 | ind_even_odd = even_odd_level(grid_level) |
---|
1443 | |
---|
1444 | CALL redblack( f_mg, p_mg ) |
---|
1445 | |
---|
1446 | ! |
---|
1447 | !-- Determination of the actual residual |
---|
1448 | CALL resid( f_mg, p_mg, r ) |
---|
1449 | |
---|
1450 | !-- Restriction of the residual (finer grid values!) to the next coarser |
---|
1451 | !-- grid. Therefore, the grid level has to be decremented now. nxl..nzt have |
---|
1452 | !-- to be set to the coarse grid values, because these variables are needed |
---|
1453 | !-- for the exchange of ghost points in routine exchange_horiz |
---|
1454 | grid_level = grid_level - 1 |
---|
1455 | |
---|
1456 | nxl = nxl_mg(grid_level) |
---|
1457 | nys = nys_mg(grid_level) |
---|
1458 | nxr = nxr_mg(grid_level) |
---|
1459 | nyn = nyn_mg(grid_level) |
---|
1460 | nzt = nzt_mg(grid_level) |
---|
1461 | |
---|
1462 | IF ( grid_level == mg_switch_to_pe0_level ) THEN |
---|
1463 | |
---|
1464 | ! |
---|
1465 | !-- From this level on, calculations are done on PE0 only. |
---|
1466 | !-- First, carry out restriction on the subdomain. |
---|
1467 | !-- Therefore, indices of the level have to be changed to subdomain |
---|
1468 | !-- values in between (otherwise, the restrict routine would expect |
---|
1469 | !-- the gathered array) |
---|
1470 | |
---|
1471 | nxl_mg_save = nxl_mg(grid_level) |
---|
1472 | nxr_mg_save = nxr_mg(grid_level) |
---|
1473 | nys_mg_save = nys_mg(grid_level) |
---|
1474 | nyn_mg_save = nyn_mg(grid_level) |
---|
1475 | nzt_mg_save = nzt_mg(grid_level) |
---|
1476 | nxl_mg(grid_level) = mg_loc_ind(1,myid) |
---|
1477 | nxr_mg(grid_level) = mg_loc_ind(2,myid) |
---|
1478 | nys_mg(grid_level) = mg_loc_ind(3,myid) |
---|
1479 | nyn_mg(grid_level) = mg_loc_ind(4,myid) |
---|
1480 | nzt_mg(grid_level) = mg_loc_ind(5,myid) |
---|
1481 | nxl = mg_loc_ind(1,myid) |
---|
1482 | nxr = mg_loc_ind(2,myid) |
---|
1483 | nys = mg_loc_ind(3,myid) |
---|
1484 | nyn = mg_loc_ind(4,myid) |
---|
1485 | nzt = mg_loc_ind(5,myid) |
---|
1486 | |
---|
1487 | ALLOCATE( f2_sub(nzb:nzt_mg(grid_level)+1, & |
---|
1488 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
---|
1489 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) ) |
---|
1490 | |
---|
1491 | CALL restrict( f2_sub, r ) |
---|
1492 | |
---|
1493 | ! |
---|
1494 | !-- Restore the correct indices of this level |
---|
1495 | nxl_mg(grid_level) = nxl_mg_save |
---|
1496 | nxr_mg(grid_level) = nxr_mg_save |
---|
1497 | nys_mg(grid_level) = nys_mg_save |
---|
1498 | nyn_mg(grid_level) = nyn_mg_save |
---|
1499 | nzt_mg(grid_level) = nzt_mg_save |
---|
1500 | nxl = nxl_mg(grid_level) |
---|
1501 | nxr = nxr_mg(grid_level) |
---|
1502 | nys = nys_mg(grid_level) |
---|
1503 | nyn = nyn_mg(grid_level) |
---|
1504 | nzt = nzt_mg(grid_level) |
---|
1505 | ! |
---|
1506 | !-- Gather all arrays from the subdomains on PE0 |
---|
1507 | CALL mg_gather( f2, f2_sub ) |
---|
1508 | |
---|
1509 | ! |
---|
1510 | !-- Set switch for routine exchange_horiz, that no ghostpoint exchange |
---|
1511 | !-- has to be carried out from now on |
---|
1512 | mg_switch_to_pe0 = .TRUE. |
---|
1513 | |
---|
1514 | ! |
---|
1515 | !-- In case of non-cyclic lateral boundary conditions, both in- and |
---|
1516 | !-- outflow conditions have to be used on all PEs after the switch, |
---|
1517 | !-- because then they have the total domain. |
---|
1518 | IF ( bc_lr_dirrad ) THEN |
---|
1519 | inflow_l = .TRUE. |
---|
1520 | inflow_r = .FALSE. |
---|
1521 | outflow_l = .FALSE. |
---|
1522 | outflow_r = .TRUE. |
---|
1523 | ELSEIF ( bc_lr_raddir ) THEN |
---|
1524 | inflow_l = .FALSE. |
---|
1525 | inflow_r = .TRUE. |
---|
1526 | outflow_l = .TRUE. |
---|
1527 | outflow_r = .FALSE. |
---|
1528 | ELSEIF ( nest_domain ) THEN |
---|
1529 | nest_bound_l = .TRUE. |
---|
1530 | nest_bound_r = .TRUE. |
---|
1531 | ENDIF |
---|
1532 | |
---|
1533 | IF ( bc_ns_dirrad ) THEN |
---|
1534 | inflow_n = .TRUE. |
---|
1535 | inflow_s = .FALSE. |
---|
1536 | outflow_n = .FALSE. |
---|
1537 | outflow_s = .TRUE. |
---|
1538 | ELSEIF ( bc_ns_raddir ) THEN |
---|
1539 | inflow_n = .FALSE. |
---|
1540 | inflow_s = .TRUE. |
---|
1541 | outflow_n = .TRUE. |
---|
1542 | outflow_s = .FALSE. |
---|
1543 | ELSEIF ( nest_domain ) THEN |
---|
1544 | nest_bound_s = .TRUE. |
---|
1545 | nest_bound_n = .TRUE. |
---|
1546 | ENDIF |
---|
1547 | |
---|
1548 | DEALLOCATE( f2_sub ) |
---|
1549 | |
---|
1550 | ELSE |
---|
1551 | |
---|
1552 | CALL restrict( f2, r ) |
---|
1553 | |
---|
1554 | ind_even_odd = even_odd_level(grid_level) ! must be after restrict |
---|
1555 | |
---|
1556 | ENDIF |
---|
1557 | |
---|
1558 | p2 = 0.0_wp |
---|
1559 | |
---|
1560 | ! |
---|
1561 | !-- Repeat the same procedure till the coarsest grid is reached |
---|
1562 | CALL next_mg_level( f2, p2, p3, r ) |
---|
1563 | |
---|
1564 | ENDIF |
---|
1565 | |
---|
1566 | ! |
---|
1567 | !-- Now follows the prolongation |
---|
1568 | IF ( grid_level >= 2 ) THEN |
---|
1569 | |
---|
1570 | ! |
---|
1571 | !-- Prolongation of the new residual. The values are transferred |
---|
1572 | !-- from the coarse to the next finer grid. |
---|
1573 | IF ( grid_level == mg_switch_to_pe0_level+1 ) THEN |
---|
1574 | |
---|
1575 | #if defined( __parallel ) |
---|
1576 | ! |
---|
1577 | !-- At this level, the new residual first has to be scattered from |
---|
1578 | !-- PE0 to the other PEs |
---|
1579 | ALLOCATE( p2_sub(nzb:mg_loc_ind(5,myid)+1, & |
---|
1580 | mg_loc_ind(3,myid)-1:mg_loc_ind(4,myid)+1, & |
---|
1581 | mg_loc_ind(1,myid)-1:mg_loc_ind(2,myid)+1) ) |
---|
1582 | |
---|
1583 | CALL mg_scatter( p2, p2_sub ) |
---|
1584 | |
---|
1585 | ! |
---|
1586 | !-- Therefore, indices of the previous level have to be changed to |
---|
1587 | !-- subdomain values in between (otherwise, the prolong routine would |
---|
1588 | !-- expect the gathered array) |
---|
1589 | nxl_mg_save = nxl_mg(grid_level-1) |
---|
1590 | nxr_mg_save = nxr_mg(grid_level-1) |
---|
1591 | nys_mg_save = nys_mg(grid_level-1) |
---|
1592 | nyn_mg_save = nyn_mg(grid_level-1) |
---|
1593 | nzt_mg_save = nzt_mg(grid_level-1) |
---|
1594 | nxl_mg(grid_level-1) = mg_loc_ind(1,myid) |
---|
1595 | nxr_mg(grid_level-1) = mg_loc_ind(2,myid) |
---|
1596 | nys_mg(grid_level-1) = mg_loc_ind(3,myid) |
---|
1597 | nyn_mg(grid_level-1) = mg_loc_ind(4,myid) |
---|
1598 | nzt_mg(grid_level-1) = mg_loc_ind(5,myid) |
---|
1599 | |
---|
1600 | ! |
---|
1601 | !-- Set switch for routine exchange_horiz, that ghostpoint exchange |
---|
1602 | !-- has to be carried again out from now on |
---|
1603 | mg_switch_to_pe0 = .FALSE. |
---|
1604 | |
---|
1605 | ! |
---|
1606 | !-- For non-cyclic lateral boundary conditions, restore the |
---|
1607 | !-- in-/outflow conditions |
---|
1608 | inflow_l = .FALSE.; inflow_r = .FALSE. |
---|
1609 | inflow_n = .FALSE.; inflow_s = .FALSE. |
---|
1610 | outflow_l = .FALSE.; outflow_r = .FALSE. |
---|
1611 | outflow_n = .FALSE.; outflow_s = .FALSE. |
---|
1612 | |
---|
1613 | IF ( pleft == MPI_PROC_NULL ) THEN |
---|
1614 | IF ( bc_lr_dirrad ) THEN |
---|
1615 | inflow_l = .TRUE. |
---|
1616 | ELSEIF ( bc_lr_raddir ) THEN |
---|
1617 | outflow_l = .TRUE. |
---|
1618 | ELSEIF ( nest_domain ) THEN |
---|
1619 | nest_bound_l = .TRUE. |
---|
1620 | ENDIF |
---|
1621 | ENDIF |
---|
1622 | |
---|
1623 | IF ( pright == MPI_PROC_NULL ) THEN |
---|
1624 | IF ( bc_lr_dirrad ) THEN |
---|
1625 | outflow_r = .TRUE. |
---|
1626 | ELSEIF ( bc_lr_raddir ) THEN |
---|
1627 | inflow_r = .TRUE. |
---|
1628 | ELSEIF ( nest_domain ) THEN |
---|
1629 | nest_bound_r = .TRUE. |
---|
1630 | ENDIF |
---|
1631 | ENDIF |
---|
1632 | |
---|
1633 | IF ( psouth == MPI_PROC_NULL ) THEN |
---|
1634 | IF ( bc_ns_dirrad ) THEN |
---|
1635 | outflow_s = .TRUE. |
---|
1636 | ELSEIF ( bc_ns_raddir ) THEN |
---|
1637 | inflow_s = .TRUE. |
---|
1638 | ELSEIF ( nest_domain ) THEN |
---|
1639 | nest_bound_s = .TRUE. |
---|
1640 | ENDIF |
---|
1641 | ENDIF |
---|
1642 | |
---|
1643 | IF ( pnorth == MPI_PROC_NULL ) THEN |
---|
1644 | IF ( bc_ns_dirrad ) THEN |
---|
1645 | inflow_n = .TRUE. |
---|
1646 | ELSEIF ( bc_ns_raddir ) THEN |
---|
1647 | outflow_n = .TRUE. |
---|
1648 | ELSEIF ( nest_domain ) THEN |
---|
1649 | nest_bound_n = .TRUE. |
---|
1650 | ENDIF |
---|
1651 | ENDIF |
---|
1652 | |
---|
1653 | CALL prolong( p2_sub, p3 ) |
---|
1654 | |
---|
1655 | ! |
---|
1656 | !-- Restore the correct indices of the previous level |
---|
1657 | nxl_mg(grid_level-1) = nxl_mg_save |
---|
1658 | nxr_mg(grid_level-1) = nxr_mg_save |
---|
1659 | nys_mg(grid_level-1) = nys_mg_save |
---|
1660 | nyn_mg(grid_level-1) = nyn_mg_save |
---|
1661 | nzt_mg(grid_level-1) = nzt_mg_save |
---|
1662 | |
---|
1663 | DEALLOCATE( p2_sub ) |
---|
1664 | #endif |
---|
1665 | |
---|
1666 | ELSE |
---|
1667 | |
---|
1668 | CALL prolong( p2, p3 ) |
---|
1669 | |
---|
1670 | ENDIF |
---|
1671 | |
---|
1672 | ! |
---|
1673 | !-- Computation of the new pressure correction. Therefore, |
---|
1674 | !-- values from prior grids are added up automatically stage by stage. |
---|
1675 | DO i = nxl_mg(grid_level)-1, nxr_mg(grid_level)+1 |
---|
1676 | DO j = nys_mg(grid_level)-1, nyn_mg(grid_level)+1 |
---|
1677 | DO k = nzb, nzt_mg(grid_level)+1 |
---|
1678 | p_mg(k,j,i) = p_mg(k,j,i) + p3(k,j,i) |
---|
1679 | ENDDO |
---|
1680 | ENDDO |
---|
1681 | ENDDO |
---|
1682 | |
---|
1683 | ! |
---|
1684 | !-- Relaxation of the new solution |
---|
1685 | CALL redblack( f_mg, p_mg ) |
---|
1686 | |
---|
1687 | ENDIF |
---|
1688 | |
---|
1689 | |
---|
1690 | ! |
---|
1691 | !-- The following few lines serve the steering of the multigrid scheme |
---|
1692 | IF ( grid_level == maximum_grid_level ) THEN |
---|
1693 | |
---|
1694 | GOTO 20 |
---|
1695 | |
---|
1696 | ELSEIF ( grid_level /= maximum_grid_level .AND. grid_level /= 1 .AND. & |
---|
1697 | grid_level_count(grid_level) /= gamma_mg ) THEN |
---|
1698 | |
---|
1699 | GOTO 10 |
---|
1700 | |
---|
1701 | ENDIF |
---|
1702 | |
---|
1703 | ! |
---|
1704 | !-- Reset counter for the next call of poismg |
---|
1705 | grid_level_count(grid_level) = 0 |
---|
1706 | |
---|
1707 | ! |
---|
1708 | !-- Continue with the next finer level. nxl..nzt have to be |
---|
1709 | !-- set to the finer grid values, because these variables are needed for the |
---|
1710 | !-- exchange of ghost points in routine exchange_horiz |
---|
1711 | grid_level = grid_level + 1 |
---|
1712 | ind_even_odd = even_odd_level(grid_level) |
---|
1713 | |
---|
1714 | nxl = nxl_mg(grid_level) |
---|
1715 | nxr = nxr_mg(grid_level) |
---|
1716 | nys = nys_mg(grid_level) |
---|
1717 | nyn = nyn_mg(grid_level) |
---|
1718 | nzt = nzt_mg(grid_level) |
---|
1719 | |
---|
1720 | 20 CONTINUE |
---|
1721 | |
---|
1722 | END SUBROUTINE next_mg_level |
---|
1723 | |
---|
1724 | |
---|
1725 | !------------------------------------------------------------------------------! |
---|
1726 | ! Description: |
---|
1727 | ! ------------ |
---|
1728 | !> Initial settings for sorting k-dimension from sequential order (alternate |
---|
1729 | !> even/odd) into blocks of even and odd or vice versa |
---|
1730 | !------------------------------------------------------------------------------! |
---|
1731 | SUBROUTINE init_even_odd_blocks |
---|
1732 | |
---|
1733 | |
---|
1734 | USE arrays_3d, & |
---|
1735 | ONLY: f1_mg, f2_mg, f3_mg |
---|
1736 | |
---|
1737 | USE control_parameters, & |
---|
1738 | ONLY: grid_level, maximum_grid_level |
---|
1739 | |
---|
1740 | USE indices, & |
---|
1741 | ONLY: nzb, nzt, nzt_mg |
---|
1742 | |
---|
1743 | USE indices, & |
---|
1744 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
---|
1745 | |
---|
1746 | IMPLICIT NONE |
---|
1747 | ! |
---|
1748 | !-- Local variables |
---|
1749 | INTEGER(iwp) :: i !< |
---|
1750 | INTEGER(iwp) :: l !< |
---|
1751 | |
---|
1752 | LOGICAL, SAVE :: lfirst = .TRUE. |
---|
1753 | |
---|
1754 | |
---|
1755 | IF ( .NOT. lfirst ) RETURN |
---|
1756 | |
---|
1757 | ALLOCATE( even_odd_level(maximum_grid_level) ) |
---|
1758 | |
---|
1759 | ALLOCATE( f1_mg_b(nzb:nzt+1,maximum_grid_level), & |
---|
1760 | f2_mg_b(nzb:nzt+1,maximum_grid_level), & |
---|
1761 | f3_mg_b(nzb:nzt+1,maximum_grid_level) ) |
---|
1762 | |
---|
1763 | ! |
---|
1764 | !-- Set border index between the even and odd block |
---|
1765 | DO i = maximum_grid_level, 1, -1 |
---|
1766 | even_odd_level(i) = nzt_mg(i) / 2 |
---|
1767 | ENDDO |
---|
1768 | |
---|
1769 | ! |
---|
1770 | !-- Sort grid coefficients used in red/black scheme and for calculating the |
---|
1771 | !-- residual to block (even/odd) structure |
---|
1772 | DO l = maximum_grid_level, 1 , -1 |
---|
1773 | CALL sort_k_to_even_odd_blocks( f1_mg(nzb+1:nzt_mg(grid_level),l), & |
---|
1774 | f1_mg_b(nzb:nzt_mg(grid_level)+1,l), & |
---|
1775 | l ) |
---|
1776 | CALL sort_k_to_even_odd_blocks( f2_mg(nzb+1:nzt_mg(grid_level),l), & |
---|
1777 | f2_mg_b(nzb:nzt_mg(grid_level)+1,l), & |
---|
1778 | l ) |
---|
1779 | CALL sort_k_to_even_odd_blocks( f3_mg(nzb+1:nzt_mg(grid_level),l), & |
---|
1780 | f3_mg_b(nzb:nzt_mg(grid_level)+1,l), & |
---|
1781 | l ) |
---|
1782 | ENDDO |
---|
1783 | |
---|
1784 | lfirst = .FALSE. |
---|
1785 | |
---|
1786 | END SUBROUTINE init_even_odd_blocks |
---|
1787 | |
---|
1788 | |
---|
1789 | !------------------------------------------------------------------------------! |
---|
1790 | ! Description: |
---|
1791 | ! ------------ |
---|
1792 | !> Special exchange_horiz subroutine for use in redblack. Transfers only |
---|
1793 | !> "red" or "black" data points. |
---|
1794 | !------------------------------------------------------------------------------! |
---|
1795 | SUBROUTINE special_exchange_horiz ( p_mg, color ) |
---|
1796 | |
---|
1797 | |
---|
1798 | USE control_parameters, & |
---|
1799 | ONLY: bc_lr_cyc, bc_ns_cyc, grid_level, ibc_p_b, ibc_p_t, & |
---|
1800 | inflow_l, inflow_n, inflow_r, inflow_s, maximum_grid_level, & |
---|
1801 | mg_switch_to_pe0_level, outflow_l, outflow_n, outflow_r, & |
---|
1802 | outflow_s, synchronous_exchange |
---|
1803 | |
---|
1804 | USE indices, & |
---|
1805 | ONLY: mg_loc_ind, nxl, nxl_mg, nxr, nxr_mg, nys, nys_mg, nyn, & |
---|
1806 | nyn_mg, nzb, nzt, nzt_mg |
---|
1807 | |
---|
1808 | IMPLICIT NONE |
---|
1809 | |
---|
1810 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
---|
1811 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
---|
1812 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: & |
---|
1813 | p_mg !< treated array |
---|
1814 | |
---|
1815 | INTEGER(iwp), intent(IN) :: color !< flag for grid point type (red or black) |
---|
1816 | ! |
---|
1817 | !-- Local variables |
---|
1818 | INTEGER(iwp) :: i !< index variable along x |
---|
1819 | INTEGER(iwp) :: i1 !< index variable along x on coarse level |
---|
1820 | INTEGER(iwp) :: i2 !< index variable along x on coarse level |
---|
1821 | |
---|
1822 | INTEGER(iwp) :: j !< index variable along y |
---|
1823 | INTEGER(iwp) :: j1 !< index variable along y on coarse level |
---|
1824 | INTEGER(iwp) :: j2 !< index variable along y on coarse level |
---|
1825 | INTEGER(iwp) :: k !< index variable along z |
---|
1826 | INTEGER(iwp) :: l !< short for grid level |
---|
1827 | INTEGER(iwp) :: jys !< index for lower local PE boundary along y |
---|
1828 | INTEGER(iwp) :: jyn !< index for upper local PE boundary along y |
---|
1829 | INTEGER(iwp) :: ixl !< index for lower local PE boundary along x |
---|
1830 | INTEGER(iwp) :: ixr !< index for upper local PE boundary along x |
---|
1831 | |
---|
1832 | LOGICAL :: sendrecv_in_background_save !< dummy to reset sendrecv_in_background to prescribed value |
---|
1833 | LOGICAL :: synchronous_exchange_save !< dummy to reset synchronous_exchange to prescribed value |
---|
1834 | |
---|
1835 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: temp !< temporary array on next coarser grid level |
---|
1836 | |
---|
1837 | #if defined ( __parallel ) |
---|
1838 | sendrecv_in_background_save = sendrecv_in_background |
---|
1839 | sendrecv_in_background = .FALSE. |
---|
1840 | synchronous_exchange_save = synchronous_exchange |
---|
1841 | synchronous_exchange = .FALSE. |
---|
1842 | |
---|
1843 | l = grid_level |
---|
1844 | |
---|
1845 | ind_even_odd = even_odd_level(grid_level) |
---|
1846 | |
---|
1847 | ! |
---|
1848 | !-- Restricted transfer only on finer levels with enough data. |
---|
1849 | !-- Restricted transfer is not possible for levels smaller or equal to |
---|
1850 | !-- 'switch to PE0 levels', since array bounds does not fit. Moreover, |
---|
1851 | !-- it is not possible for the coarsest grid level, since the dimensions |
---|
1852 | !-- of temp are not defined. For such cases, normal exchange_horiz is called. |
---|
1853 | IF ( l > 1 .AND. l > mg_switch_to_pe0_level + 1 .AND. & |
---|
1854 | ( ngp_xz(grid_level) >= 900 .OR. ngp_yz(grid_level) >= 900 ) ) THEN |
---|
1855 | |
---|
1856 | jys = nys_mg(grid_level-1) |
---|
1857 | jyn = nyn_mg(grid_level-1) |
---|
1858 | ixl = nxl_mg(grid_level-1) |
---|
1859 | ixr = nxr_mg(grid_level-1) |
---|
1860 | ALLOCATE( temp(nzb:nzt_mg(l-1)+1,jys-1:jyn+1,ixl-1:ixr+1) ) |
---|
1861 | ! |
---|
1862 | !-- Handling the even k Values |
---|
1863 | !-- Collecting data for the north - south exchange |
---|
1864 | !-- Since only every second value has to be transfered, data are stored |
---|
1865 | !-- on the next coarser grid level, because the arrays on that level |
---|
1866 | !-- have just the required size |
---|
1867 | i1 = nxl_mg(grid_level-1) |
---|
1868 | i2 = nxl_mg(grid_level-1) |
---|
1869 | |
---|
1870 | DO i = nxl_mg(l), nxr_mg(l), 2 |
---|
1871 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
---|
1872 | |
---|
1873 | IF ( j == nys_mg(l) ) THEN |
---|
1874 | !DIR$ IVDEP |
---|
1875 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
1876 | temp(k-ind_even_odd,jys,i1) = p_mg(k,j,i) |
---|
1877 | ENDDO |
---|
1878 | i1 = i1 + 1 |
---|
1879 | |
---|
1880 | ENDIF |
---|
1881 | |
---|
1882 | IF ( j == nyn_mg(l) ) THEN |
---|
1883 | !DIR$ IVDEP |
---|
1884 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
1885 | temp(k-ind_even_odd,jyn,i2) = p_mg(k,j,i) |
---|
1886 | ENDDO |
---|
1887 | i2 = i2 + 1 |
---|
1888 | |
---|
1889 | ENDIF |
---|
1890 | |
---|
1891 | ENDDO |
---|
1892 | ENDDO |
---|
1893 | |
---|
1894 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
---|
1895 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
---|
1896 | |
---|
1897 | IF ( j == nys_mg(l) ) THEN |
---|
1898 | !DIR$ IVDEP |
---|
1899 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
1900 | temp(k-ind_even_odd,jys,i1) = p_mg(k,j,i) |
---|
1901 | ENDDO |
---|
1902 | i1 = i1 + 1 |
---|
1903 | |
---|
1904 | ENDIF |
---|
1905 | |
---|
1906 | IF ( j == nyn_mg(l) ) THEN |
---|
1907 | !DIR$ IVDEP |
---|
1908 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
1909 | temp(k-ind_even_odd,jyn,i2) = p_mg(k,j,i) |
---|
1910 | ENDDO |
---|
1911 | i2 = i2 + 1 |
---|
1912 | |
---|
1913 | ENDIF |
---|
1914 | |
---|
1915 | ENDDO |
---|
1916 | ENDDO |
---|
1917 | |
---|
1918 | grid_level = grid_level-1 |
---|
1919 | |
---|
1920 | nxl = nxl_mg(grid_level) |
---|
1921 | nys = nys_mg(grid_level) |
---|
1922 | nxr = nxr_mg(grid_level) |
---|
1923 | nyn = nyn_mg(grid_level) |
---|
1924 | nzt = nzt_mg(grid_level) |
---|
1925 | |
---|
1926 | send_receive = 'ns' |
---|
1927 | CALL exchange_horiz( temp, 1 ) |
---|
1928 | |
---|
1929 | grid_level = grid_level+1 |
---|
1930 | |
---|
1931 | i1 = nxl_mg(grid_level-1) |
---|
1932 | i2 = nxl_mg(grid_level-1) |
---|
1933 | |
---|
1934 | DO i = nxl_mg(l), nxr_mg(l), 2 |
---|
1935 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
---|
1936 | |
---|
1937 | IF ( j == nys_mg(l) ) THEN |
---|
1938 | !DIR$ IVDEP |
---|
1939 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
1940 | p_mg(k,nyn_mg(l)+1,i) = temp(k-ind_even_odd,jyn+1,i1) |
---|
1941 | ENDDO |
---|
1942 | i1 = i1 + 1 |
---|
1943 | |
---|
1944 | ENDIF |
---|
1945 | |
---|
1946 | IF ( j == nyn_mg(l) ) THEN |
---|
1947 | !DIR$ IVDEP |
---|
1948 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
1949 | p_mg(k,nys_mg(l)-1,i) = temp(k-ind_even_odd,jys-1,i2) |
---|
1950 | ENDDO |
---|
1951 | i2 = i2 + 1 |
---|
1952 | |
---|
1953 | ENDIF |
---|
1954 | |
---|
1955 | ENDDO |
---|
1956 | ENDDO |
---|
1957 | |
---|
1958 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
---|
1959 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
---|
1960 | |
---|
1961 | IF ( j == nys_mg(l) ) THEN |
---|
1962 | !DIR$ IVDEP |
---|
1963 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
1964 | p_mg(k,nyn_mg(l)+1,i) = temp(k-ind_even_odd,jyn+1,i1) |
---|
1965 | ENDDO |
---|
1966 | i1 = i1 + 1 |
---|
1967 | |
---|
1968 | ENDIF |
---|
1969 | |
---|
1970 | IF ( j == nyn_mg(l) ) THEN |
---|
1971 | !DIR$ IVDEP |
---|
1972 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
1973 | p_mg(k,nys_mg(l)-1,i) = temp(k-ind_even_odd,jys-1,i2) |
---|
1974 | ENDDO |
---|
1975 | i2 = i2 + 1 |
---|
1976 | |
---|
1977 | ENDIF |
---|
1978 | |
---|
1979 | ENDDO |
---|
1980 | ENDDO |
---|
1981 | |
---|
1982 | ! |
---|
1983 | !-- Collecting data for the left - right exchange |
---|
1984 | !-- Since only every second value has to be transfered, data are stored |
---|
1985 | !-- on the next coarser grid level, because the arrays on that level |
---|
1986 | !-- have just the required size |
---|
1987 | j1 = nys_mg(grid_level-1) |
---|
1988 | j2 = nys_mg(grid_level-1) |
---|
1989 | |
---|
1990 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
---|
1991 | DO i = nxl_mg(l), nxr_mg(l), 2 |
---|
1992 | |
---|
1993 | IF ( i == nxl_mg(l) ) THEN |
---|
1994 | !DIR$ IVDEP |
---|
1995 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
1996 | temp(k-ind_even_odd,j1,ixl) = p_mg(k,j,i) |
---|
1997 | ENDDO |
---|
1998 | j1 = j1 + 1 |
---|
1999 | |
---|
2000 | ENDIF |
---|
2001 | |
---|
2002 | IF ( i == nxr_mg(l) ) THEN |
---|
2003 | !DIR$ IVDEP |
---|
2004 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
2005 | temp(k-ind_even_odd,j2,ixr) = p_mg(k,j,i) |
---|
2006 | ENDDO |
---|
2007 | j2 = j2 + 1 |
---|
2008 | |
---|
2009 | ENDIF |
---|
2010 | |
---|
2011 | ENDDO |
---|
2012 | ENDDO |
---|
2013 | |
---|
2014 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
---|
2015 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
---|
2016 | |
---|
2017 | IF ( i == nxl_mg(l) ) THEN |
---|
2018 | !DIR$ IVDEP |
---|
2019 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
2020 | temp(k-ind_even_odd,j1,ixl) = p_mg(k,j,i) |
---|
2021 | ENDDO |
---|
2022 | j1 = j1 + 1 |
---|
2023 | |
---|
2024 | ENDIF |
---|
2025 | |
---|
2026 | IF ( i == nxr_mg(l) ) THEN |
---|
2027 | !DIR$ IVDEP |
---|
2028 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
2029 | temp(k-ind_even_odd,j2,ixr) = p_mg(k,j,i) |
---|
2030 | ENDDO |
---|
2031 | j2 = j2 + 1 |
---|
2032 | |
---|
2033 | ENDIF |
---|
2034 | |
---|
2035 | ENDDO |
---|
2036 | ENDDO |
---|
2037 | |
---|
2038 | grid_level = grid_level-1 |
---|
2039 | send_receive = 'lr' |
---|
2040 | |
---|
2041 | CALL exchange_horiz( temp, 1 ) |
---|
2042 | |
---|
2043 | grid_level = grid_level+1 |
---|
2044 | |
---|
2045 | j1 = nys_mg(grid_level-1) |
---|
2046 | j2 = nys_mg(grid_level-1) |
---|
2047 | |
---|
2048 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
---|
2049 | DO i = nxl_mg(l), nxr_mg(l), 2 |
---|
2050 | |
---|
2051 | IF ( i == nxl_mg(l) ) THEN |
---|
2052 | !DIR$ IVDEP |
---|
2053 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
2054 | p_mg(k,j,nxr_mg(l)+1) = temp(k-ind_even_odd,j1,ixr+1) |
---|
2055 | ENDDO |
---|
2056 | j1 = j1 + 1 |
---|
2057 | |
---|
2058 | ENDIF |
---|
2059 | |
---|
2060 | IF ( i == nxr_mg(l) ) THEN |
---|
2061 | !DIR$ IVDEP |
---|
2062 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
2063 | p_mg(k,j,nxl_mg(l)-1) = temp(k-ind_even_odd,j2,ixl-1) |
---|
2064 | ENDDO |
---|
2065 | j2 = j2 + 1 |
---|
2066 | |
---|
2067 | ENDIF |
---|
2068 | |
---|
2069 | ENDDO |
---|
2070 | ENDDO |
---|
2071 | |
---|
2072 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
---|
2073 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
---|
2074 | |
---|
2075 | IF ( i == nxl_mg(l) ) THEN |
---|
2076 | !DIR$ IVDEP |
---|
2077 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
2078 | p_mg(k,j,nxr_mg(l)+1) = temp(k-ind_even_odd,j1,ixr+1) |
---|
2079 | ENDDO |
---|
2080 | j1 = j1 + 1 |
---|
2081 | |
---|
2082 | ENDIF |
---|
2083 | |
---|
2084 | IF ( i == nxr_mg(l) ) THEN |
---|
2085 | !DIR$ IVDEP |
---|
2086 | DO k = ind_even_odd+1, nzt_mg(l) |
---|
2087 | p_mg(k,j,nxl_mg(l)-1) = temp(k-ind_even_odd,j2,ixl-1) |
---|
2088 | ENDDO |
---|
2089 | j2 = j2 + 1 |
---|
2090 | |
---|
2091 | ENDIF |
---|
2092 | |
---|
2093 | ENDDO |
---|
2094 | ENDDO |
---|
2095 | |
---|
2096 | ! |
---|
2097 | !-- Now handling the even k values |
---|
2098 | !-- Collecting data for the north - south exchange |
---|
2099 | !-- Since only every second value has to be transfered, data are stored |
---|
2100 | !-- on the next coarser grid level, because the arrays on that level |
---|
2101 | !-- have just the required size |
---|
2102 | i1 = nxl_mg(grid_level-1) |
---|
2103 | i2 = nxl_mg(grid_level-1) |
---|
2104 | |
---|
2105 | DO i = nxl_mg(l), nxr_mg(l), 2 |
---|
2106 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
---|
2107 | |
---|
2108 | IF ( j == nys_mg(l) ) THEN |
---|
2109 | !DIR$ IVDEP |
---|
2110 | DO k = nzb+1, ind_even_odd |
---|
2111 | temp(k,jys,i1) = p_mg(k,j,i) |
---|
2112 | ENDDO |
---|
2113 | i1 = i1 + 1 |
---|
2114 | |
---|
2115 | ENDIF |
---|
2116 | |
---|
2117 | IF ( j == nyn_mg(l) ) THEN |
---|
2118 | !DIR$ IVDEP |
---|
2119 | DO k = nzb+1, ind_even_odd |
---|
2120 | temp(k,jyn,i2) = p_mg(k,j,i) |
---|
2121 | ENDDO |
---|
2122 | i2 = i2 + 1 |
---|
2123 | |
---|
2124 | ENDIF |
---|
2125 | |
---|
2126 | ENDDO |
---|
2127 | ENDDO |
---|
2128 | |
---|
2129 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
---|
2130 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
---|
2131 | |
---|
2132 | IF ( j == nys_mg(l) ) THEN |
---|
2133 | !DIR$ IVDEP |
---|
2134 | DO k = nzb+1, ind_even_odd |
---|
2135 | temp(k,jys,i1) = p_mg(k,j,i) |
---|
2136 | ENDDO |
---|
2137 | i1 = i1 + 1 |
---|
2138 | |
---|
2139 | ENDIF |
---|
2140 | |
---|
2141 | IF ( j == nyn_mg(l) ) THEN |
---|
2142 | !DIR$ IVDEP |
---|
2143 | DO k = nzb+1, ind_even_odd |
---|
2144 | temp(k,jyn,i2) = p_mg(k,j,i) |
---|
2145 | ENDDO |
---|
2146 | i2 = i2 + 1 |
---|
2147 | |
---|
2148 | ENDIF |
---|
2149 | |
---|
2150 | ENDDO |
---|
2151 | ENDDO |
---|
2152 | |
---|
2153 | grid_level = grid_level-1 |
---|
2154 | |
---|
2155 | send_receive = 'ns' |
---|
2156 | CALL exchange_horiz( temp, 1 ) |
---|
2157 | |
---|
2158 | grid_level = grid_level+1 |
---|
2159 | |
---|
2160 | i1 = nxl_mg(grid_level-1) |
---|
2161 | i2 = nxl_mg(grid_level-1) |
---|
2162 | |
---|
2163 | DO i = nxl_mg(l), nxr_mg(l), 2 |
---|
2164 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
---|
2165 | |
---|
2166 | IF ( j == nys_mg(l) ) THEN |
---|
2167 | !DIR$ IVDEP |
---|
2168 | DO k = nzb+1, ind_even_odd |
---|
2169 | p_mg(k,nyn_mg(l)+1,i) = temp(k,jyn+1,i1) |
---|
2170 | ENDDO |
---|
2171 | i1 = i1 + 1 |
---|
2172 | |
---|
2173 | ENDIF |
---|
2174 | |
---|
2175 | IF ( j == nyn_mg(l) ) THEN |
---|
2176 | !DIR$ IVDEP |
---|
2177 | DO k = nzb+1, ind_even_odd |
---|
2178 | p_mg(k,nys_mg(l)-1,i) = temp(k,jys-1,i2) |
---|
2179 | ENDDO |
---|
2180 | i2 = i2 + 1 |
---|
2181 | |
---|
2182 | ENDIF |
---|
2183 | |
---|
2184 | ENDDO |
---|
2185 | ENDDO |
---|
2186 | |
---|
2187 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
---|
2188 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
---|
2189 | |
---|
2190 | IF ( j == nys_mg(l) ) THEN |
---|
2191 | !DIR$ IVDEP |
---|
2192 | DO k = nzb+1, ind_even_odd |
---|
2193 | p_mg(k,nyn_mg(l)+1,i) = temp(k,jyn+1,i1) |
---|
2194 | ENDDO |
---|
2195 | i1 = i1 + 1 |
---|
2196 | |
---|
2197 | ENDIF |
---|
2198 | |
---|
2199 | IF ( j == nyn_mg(l) ) THEN |
---|
2200 | !DIR$ IVDEP |
---|
2201 | DO k = nzb+1, ind_even_odd |
---|
2202 | p_mg(k,nys_mg(l)-1,i) = temp(k,jys-1,i2) |
---|
2203 | ENDDO |
---|
2204 | i2 = i2 + 1 |
---|
2205 | |
---|
2206 | ENDIF |
---|
2207 | |
---|
2208 | ENDDO |
---|
2209 | ENDDO |
---|
2210 | |
---|
2211 | j1 = nys_mg(grid_level-1) |
---|
2212 | j2 = nys_mg(grid_level-1) |
---|
2213 | |
---|
2214 | DO i = nxl_mg(l), nxr_mg(l), 2 |
---|
2215 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
---|
2216 | |
---|
2217 | IF ( i == nxl_mg(l) ) THEN |
---|
2218 | !DIR$ IVDEP |
---|
2219 | DO k = nzb+1, ind_even_odd |
---|
2220 | temp(k,j1,ixl) = p_mg(k,j,i) |
---|
2221 | ENDDO |
---|
2222 | j1 = j1 + 1 |
---|
2223 | |
---|
2224 | ENDIF |
---|
2225 | |
---|
2226 | IF ( i == nxr_mg(l) ) THEN |
---|
2227 | !DIR$ IVDEP |
---|
2228 | DO k = nzb+1, ind_even_odd |
---|
2229 | temp(k,j2,ixr) = p_mg(k,j,i) |
---|
2230 | ENDDO |
---|
2231 | j2 = j2 + 1 |
---|
2232 | |
---|
2233 | ENDIF |
---|
2234 | |
---|
2235 | ENDDO |
---|
2236 | ENDDO |
---|
2237 | |
---|
2238 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
---|
2239 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
---|
2240 | |
---|
2241 | IF ( i == nxl_mg(l) ) THEN |
---|
2242 | !DIR$ IVDEP |
---|
2243 | DO k = nzb+1, ind_even_odd |
---|
2244 | temp(k,j1,ixl) = p_mg(k,j,i) |
---|
2245 | ENDDO |
---|
2246 | j1 = j1 + 1 |
---|
2247 | |
---|
2248 | ENDIF |
---|
2249 | |
---|
2250 | IF ( i == nxr_mg(l) ) THEN |
---|
2251 | !DIR$ IVDEP |
---|
2252 | DO k = nzb+1, ind_even_odd |
---|
2253 | temp(k,j2,ixr) = p_mg(k,j,i) |
---|
2254 | ENDDO |
---|
2255 | j2 = j2 + 1 |
---|
2256 | |
---|
2257 | ENDIF |
---|
2258 | |
---|
2259 | ENDDO |
---|
2260 | ENDDO |
---|
2261 | |
---|
2262 | grid_level = grid_level-1 |
---|
2263 | |
---|
2264 | send_receive = 'lr' |
---|
2265 | CALL exchange_horiz( temp, 1 ) |
---|
2266 | |
---|
2267 | grid_level = grid_level+1 |
---|
2268 | |
---|
2269 | nxl = nxl_mg(grid_level) |
---|
2270 | nys = nys_mg(grid_level) |
---|
2271 | nxr = nxr_mg(grid_level) |
---|
2272 | nyn = nyn_mg(grid_level) |
---|
2273 | nzt = nzt_mg(grid_level) |
---|
2274 | |
---|
2275 | j1 = nys_mg(grid_level-1) |
---|
2276 | j2 = nys_mg(grid_level-1) |
---|
2277 | |
---|
2278 | DO i = nxl_mg(l), nxr_mg(l), 2 |
---|
2279 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
---|
2280 | |
---|
2281 | IF ( i == nxl_mg(l) ) THEN |
---|
2282 | !DIR$ IVDEP |
---|
2283 | DO k = nzb+1, ind_even_odd |
---|
2284 | p_mg(k,j,nxr_mg(l)+1) = temp(k,j1,ixr+1) |
---|
2285 | ENDDO |
---|
2286 | j1 = j1 + 1 |
---|
2287 | |
---|
2288 | ENDIF |
---|
2289 | |
---|
2290 | IF ( i == nxr_mg(l) ) THEN |
---|
2291 | !DIR$ IVDEP |
---|
2292 | DO k = nzb+1, ind_even_odd |
---|
2293 | p_mg(k,j,nxl_mg(l)-1) = temp(k,j2,ixl-1) |
---|
2294 | ENDDO |
---|
2295 | j2 = j2 + 1 |
---|
2296 | |
---|
2297 | ENDIF |
---|
2298 | |
---|
2299 | ENDDO |
---|
2300 | ENDDO |
---|
2301 | |
---|
2302 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
---|
2303 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
---|
2304 | |
---|
2305 | IF ( i == nxl_mg(l) ) THEN |
---|
2306 | !DIR$ IVDEP |
---|
2307 | DO k = nzb+1, ind_even_odd |
---|
2308 | p_mg(k,j,nxr_mg(l)+1) = temp(k,j1,ixr+1) |
---|
2309 | ENDDO |
---|
2310 | j1 = j1 + 1 |
---|
2311 | |
---|
2312 | ENDIF |
---|
2313 | |
---|
2314 | IF ( i == nxr_mg(l) ) THEN |
---|
2315 | !DIR$ IVDEP |
---|
2316 | DO k = nzb+1, ind_even_odd |
---|
2317 | p_mg(k,j,nxl_mg(l)-1) = temp(k,j2,ixl-1) |
---|
2318 | ENDDO |
---|
2319 | j2 = j2 + 1 |
---|
2320 | |
---|
2321 | ENDIF |
---|
2322 | |
---|
2323 | ENDDO |
---|
2324 | ENDDO |
---|
2325 | |
---|
2326 | DEALLOCATE( temp ) |
---|
2327 | |
---|
2328 | ELSE |
---|
2329 | |
---|
2330 | ! |
---|
2331 | !-- Standard horizontal ghost boundary exchange for small coarse grid |
---|
2332 | !-- levels, where the transfer time is latency bound |
---|
2333 | CALL exchange_horiz( p_mg, 1 ) |
---|
2334 | |
---|
2335 | ENDIF |
---|
2336 | |
---|
2337 | ! |
---|
2338 | !-- Reset values to default PALM setup |
---|
2339 | sendrecv_in_background = sendrecv_in_background_save |
---|
2340 | synchronous_exchange = synchronous_exchange_save |
---|
2341 | send_receive = 'al' |
---|
2342 | #else |
---|
2343 | |
---|
2344 | ! |
---|
2345 | !-- Standard horizontal ghost boundary exchange for small coarse grid |
---|
2346 | !-- levels, where the transfer time is latency bound |
---|
2347 | CALL exchange_horiz( p_mg, 1 ) |
---|
2348 | #endif |
---|
2349 | |
---|
2350 | END SUBROUTINE special_exchange_horiz |
---|
2351 | |
---|
2352 | END MODULE poismg_mod |
---|