1 | SUBROUTINE exchange_horiz_2d( ar ) |
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2 | |
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3 | !------------------------------------------------------------------------------! |
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4 | ! Actual revisions: |
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5 | ! ----------------- |
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6 | ! Neumann boundary conditions at inflow/outflow in case of non-cyclic boundary |
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7 | ! conditions |
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8 | ! |
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9 | ! Former revisions: |
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10 | ! ----------------- |
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11 | ! $Id: exchange_horiz_2d.f90 73 2007-03-20 08:33:14Z raasch $ |
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12 | ! RCS Log replace by Id keyword, revision history cleaned up |
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13 | ! |
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14 | ! Revision 1.9 2006/05/12 19:15:52 letzel |
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15 | ! MPI_REAL replaced by MPI_INTEGER in exchange_horiz_2d_int |
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16 | ! |
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17 | ! Revision 1.1 1998/01/23 09:58:21 raasch |
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18 | ! Initial revision |
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19 | ! |
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20 | ! |
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21 | ! Description: |
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22 | ! ------------ |
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23 | ! Exchange of lateral (ghost) boundaries (parallel computers) and cyclic |
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24 | ! boundary conditions, respectively, for 2D-arrays. |
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25 | !------------------------------------------------------------------------------! |
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26 | |
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27 | USE control_parameters |
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28 | USE cpulog |
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29 | USE indices |
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30 | USE interfaces |
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31 | USE pegrid |
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32 | |
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33 | IMPLICIT NONE |
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34 | |
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35 | REAL :: ar(nys-1:nyn+1,nxl-1:nxr+1) |
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36 | |
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37 | |
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38 | CALL cpu_log( log_point_s(13), 'exchange_horiz_2d', 'start' ) |
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39 | |
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40 | #if defined( __parallel ) |
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41 | |
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42 | ! |
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43 | !-- Exchange of lateral boundary values for parallel computers |
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44 | IF ( pdims(1) == 1 ) THEN |
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45 | |
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46 | ! |
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47 | !-- One-dimensional decomposition along y, boundary values can be exchanged |
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48 | !-- within the PE memory |
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49 | ar(nys:nyn,nxl-1) = ar(nys:nyn,nxr) |
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50 | ar(nys:nyn,nxr+1) = ar(nys:nyn,nxl) |
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51 | |
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52 | ELSE |
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53 | ! |
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54 | !-- Send left boundary, receive right one |
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55 | CALL MPI_SENDRECV( ar(nys,nxl), ngp_y, MPI_REAL, pleft, 0, & |
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56 | ar(nys,nxr+1), ngp_y, MPI_REAL, pright, 0, & |
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57 | comm2d, status, ierr ) |
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58 | ! |
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59 | !-- Send right boundary, receive left one |
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60 | CALL MPI_SENDRECV( ar(nys,nxr), ngp_y, MPI_REAL, pright, 1, & |
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61 | ar(nys,nxl-1), ngp_y, MPI_REAL, pleft, 1, & |
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62 | comm2d, status, ierr ) |
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63 | ENDIF |
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64 | |
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65 | IF ( pdims(2) == 1 ) THEN |
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66 | ! |
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67 | !-- One-dimensional decomposition along x, boundary values can be exchanged |
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68 | !-- within the PE memory |
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69 | ar(nys-1,:) = ar(nyn,:) |
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70 | ar(nyn+1,:) = ar(nys,:) |
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71 | |
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72 | ELSE |
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73 | ! |
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74 | !-- Send front boundary, receive rear one |
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75 | CALL MPI_SENDRECV( ar(nys,nxl-1), 1, type_x, psouth, 0, & |
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76 | ar(nyn+1,nxl-1), 1, type_x, pnorth, 0, & |
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77 | comm2d, status, ierr ) |
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78 | ! |
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79 | !-- Send rear boundary, receive front one |
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80 | CALL MPI_SENDRECV( ar(nyn,nxl-1), 1, type_x, pnorth, 1, & |
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81 | ar(nys-1,nxl-1), 1, type_x, psouth, 1, & |
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82 | comm2d, status, ierr ) |
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83 | ENDIF |
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84 | |
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85 | #else |
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86 | |
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87 | ! |
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88 | !-- Lateral boundary conditions in the non-parallel case |
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89 | IF ( bc_lr == 'cyclic' ) THEN |
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90 | ar(nys:nyn,nxl-1) = ar(nys:nyn,nxr) |
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91 | ar(nys:nyn,nxr+1) = ar(nys:nyn,nxl) |
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92 | ENDIF |
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93 | |
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94 | IF ( bc_ns == 'cyclic' ) THEN |
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95 | ar(nys-1,:) = ar(nyn,:) |
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96 | ar(nyn+1,:) = ar(nys,:) |
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97 | ENDIF |
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98 | |
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99 | #endif |
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100 | |
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101 | ! |
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102 | !-- Neumann-conditions at inflow/outflow in case of non-cyclic boundary |
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103 | !-- conditions |
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104 | IF ( inflow_l .OR. outflow_l ) ar(:,nxl-1) = ar(:,nxl) |
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105 | IF ( inflow_r .OR. outflow_r ) ar(:,nxr+1) = ar(:,nxr) |
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106 | IF ( inflow_s .OR. outflow_s ) ar(nys-1,:) = ar(nys,:) |
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107 | IF ( inflow_n .OR. outflow_n ) ar(nyn+1,:) = ar(nyn,:) |
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108 | |
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109 | CALL cpu_log( log_point_s(13), 'exchange_horiz_2d', 'stop' ) |
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110 | |
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111 | END SUBROUTINE exchange_horiz_2d |
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112 | |
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113 | |
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114 | |
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115 | SUBROUTINE exchange_horiz_2d_int( ar ) |
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116 | |
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117 | !------------------------------------------------------------------------------! |
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118 | ! Description: |
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119 | ! ------------ |
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120 | ! Exchange of lateral (ghost) boundaries (parallel computers) and cyclic |
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121 | ! boundary conditions, respectively, for 2D integer arrays. |
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122 | !------------------------------------------------------------------------------! |
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123 | |
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124 | USE control_parameters |
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125 | USE cpulog |
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126 | USE indices |
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127 | USE interfaces |
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128 | USE pegrid |
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129 | |
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130 | IMPLICIT NONE |
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131 | |
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132 | INTEGER :: ar(nys-1:nyn+1,nxl-1:nxr+1) |
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133 | |
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134 | |
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135 | CALL cpu_log( log_point_s(13), 'exchange_horiz_2d', 'start' ) |
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136 | |
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137 | #if defined( __parallel ) |
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138 | |
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139 | ! |
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140 | !-- Exchange of lateral boundary values for parallel computers |
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141 | IF ( pdims(1) == 1 ) THEN |
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142 | |
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143 | ! |
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144 | !-- One-dimensional decomposition along y, boundary values can be exchanged |
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145 | !-- within the PE memory |
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146 | ar(nys:nyn,nxl-1) = ar(nys:nyn,nxr) |
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147 | ar(nys:nyn,nxr+1) = ar(nys:nyn,nxl) |
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148 | |
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149 | ELSE |
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150 | ! |
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151 | !-- Send left boundary, receive right one |
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152 | CALL MPI_SENDRECV( ar(nys,nxl), ngp_y, MPI_INTEGER, pleft, 0, & |
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153 | ar(nys,nxr+1), ngp_y, MPI_INTEGER, pright, 0, & |
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154 | comm2d, status, ierr ) |
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155 | ! |
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156 | !-- Send right boundary, receive left one |
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157 | CALL MPI_SENDRECV( ar(nys,nxr), ngp_y, MPI_INTEGER, pright, 1, & |
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158 | ar(nys,nxl-1), ngp_y, MPI_INTEGER, pleft, 1, & |
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159 | comm2d, status, ierr ) |
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160 | ENDIF |
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161 | |
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162 | IF ( pdims(2) == 1 ) THEN |
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163 | ! |
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164 | !-- One-dimensional decomposition along x, boundary values can be exchanged |
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165 | !-- within the PE memory |
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166 | ar(nys-1,:) = ar(nyn,:) |
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167 | ar(nyn+1,:) = ar(nys,:) |
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168 | |
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169 | ELSE |
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170 | ! |
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171 | !-- Send front boundary, receive rear one |
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172 | CALL MPI_SENDRECV( ar(nys,nxl-1), 1, type_x_int, psouth, 0, & |
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173 | ar(nyn+1,nxl-1), 1, type_x_int, pnorth, 0, & |
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174 | comm2d, status, ierr ) |
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175 | ! |
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176 | !-- Send rear boundary, receive front one |
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177 | CALL MPI_SENDRECV( ar(nyn,nxl-1), 1, type_x_int, pnorth, 1, & |
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178 | ar(nys-1,nxl-1), 1, type_x_int, psouth, 1, & |
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179 | comm2d, status, ierr ) |
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180 | ENDIF |
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181 | |
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182 | #else |
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183 | |
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184 | ! |
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185 | !-- Lateral boundary conditions in the non-parallel case |
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186 | IF ( bc_lr == 'cyclic' ) THEN |
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187 | ar(nys:nyn,nxl-1) = ar(nys:nyn,nxr) |
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188 | ar(nys:nyn,nxr+1) = ar(nys:nyn,nxl) |
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189 | ENDIF |
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190 | |
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191 | IF ( bc_ns == 'cyclic' ) THEN |
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192 | ar(nys-1,:) = ar(nyn,:) |
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193 | ar(nyn+1,:) = ar(nys,:) |
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194 | ENDIF |
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195 | |
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196 | #endif |
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197 | |
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198 | CALL cpu_log( log_point_s(13), 'exchange_horiz_2d', 'stop' ) |
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199 | |
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200 | END SUBROUTINE exchange_horiz_2d_int |
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