| 1 | !> @file poismg.f90 |
|---|
| 2 | !------------------------------------------------------------------------------! |
|---|
| 3 | ! This file is part of the PALM model system. |
|---|
| 4 | ! |
|---|
| 5 | ! PALM is free software: you can redistribute it and/or modify it under the |
|---|
| 6 | ! terms of the GNU General Public License as published by the Free Software |
|---|
| 7 | ! Foundation, either version 3 of the License, or (at your option) any later |
|---|
| 8 | ! version. |
|---|
| 9 | ! |
|---|
| 10 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
|---|
| 11 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
|---|
| 12 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
|---|
| 13 | ! |
|---|
| 14 | ! You should have received a copy of the GNU General Public License along with |
|---|
| 15 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
|---|
| 16 | ! |
|---|
| 17 | ! Copyright 1997-2019 Leibniz Universitaet Hannover |
|---|
| 18 | !------------------------------------------------------------------------------! |
|---|
| 19 | ! |
|---|
| 20 | ! Current revisions: |
|---|
| 21 | ! ----------------- |
|---|
| 22 | ! |
|---|
| 23 | ! |
|---|
| 24 | ! Former revisions: |
|---|
| 25 | ! ----------------- |
|---|
| 26 | ! $Id: poismg_mod.f90 3655 2019-01-07 16:51:22Z maronga $ |
|---|
| 27 | ! unnecessary check eliminated |
|---|
| 28 | ! |
|---|
| 29 | ! 3524 2018-11-14 13:36:44Z raasch |
|---|
| 30 | ! mpi_abort arguments replaced to avoid compile errors |
|---|
| 31 | ! |
|---|
| 32 | ! 3241 2018-09-12 15:02:00Z raasch |
|---|
| 33 | ! unused variables removed |
|---|
| 34 | ! |
|---|
| 35 | ! 3183 2018-07-27 14:25:55Z suehring |
|---|
| 36 | ! Rename variables in mesoscale-offline nesting mode |
|---|
| 37 | ! |
|---|
| 38 | ! 3182 2018-07-27 13:36:03Z suehring |
|---|
| 39 | ! Set lateral boundary conditions for divergence |
|---|
| 40 | ! |
|---|
| 41 | ! 2937 2018-03-27 14:58:33Z suehring |
|---|
| 42 | ! Corrected "Former revisions" section |
|---|
| 43 | ! |
|---|
| 44 | ! 2696 2017-12-14 17:12:51Z kanani |
|---|
| 45 | ! Change in file header (GPL part) |
|---|
| 46 | ! Large-scale forcing implemented (MS) |
|---|
| 47 | ! |
|---|
| 48 | ! 2298 2017-06-29 09:28:18Z raasch |
|---|
| 49 | ! sendrecv_in_background related parts removed |
|---|
| 50 | ! |
|---|
| 51 | ! 2232 2017-05-30 17:47:52Z suehring |
|---|
| 52 | ! |
|---|
| 53 | ! 2073 2016-11-30 14:34:05Z raasch |
|---|
| 54 | ! change of openmp directives in restrict |
|---|
| 55 | ! |
|---|
| 56 | ! 2037 2016-10-26 11:15:40Z knoop |
|---|
| 57 | ! Anelastic approximation implemented (stll error in optimized multigrid) |
|---|
| 58 | ! |
|---|
| 59 | ! 2021 2016-10-07 14:08:57Z suehring |
|---|
| 60 | ! Bugfix: restore nest_bound_(l/r/s/n) in case of mg_switch_to_pe0 |
|---|
| 61 | ! |
|---|
| 62 | ! 2000 2016-08-20 18:09:15Z knoop |
|---|
| 63 | ! Forced header and separation lines into 80 columns |
|---|
| 64 | ! |
|---|
| 65 | ! 1934 2016-06-13 09:46:57Z hellstea |
|---|
| 66 | ! Rename subroutines and cpu-measure log points to indicate default version |
|---|
| 67 | ! |
|---|
| 68 | ! 1904 2016-05-11 13:06:12Z suehring |
|---|
| 69 | ! Bugfix: enable special_exchange_horiz only for finer grid levels. |
|---|
| 70 | ! Some formatting adjustments and variable descriptions. |
|---|
| 71 | ! |
|---|
| 72 | ! 1898 2016-05-03 11:27:17Z suehring |
|---|
| 73 | ! Bugfix: bottom and top boundary condition in resid_fast |
|---|
| 74 | ! Bugfix: restriction at nzb+1 |
|---|
| 75 | ! formatting adjustments, variable descriptions added in some declaration blocks |
|---|
| 76 | ! |
|---|
| 77 | ! 1850 2016-04-08 13:29:27Z maronga |
|---|
| 78 | ! Module renamed |
|---|
| 79 | ! |
|---|
| 80 | ! |
|---|
| 81 | ! 1762 2016-02-25 12:31:13Z hellstea |
|---|
| 82 | ! Introduction of nested domain feature |
|---|
| 83 | ! |
|---|
| 84 | ! 1682 2015-10-07 23:56:08Z knoop |
|---|
| 85 | ! Code annotations made doxygen readable |
|---|
| 86 | ! |
|---|
| 87 | ! 1609 2015-07-03 15:37:58Z maronga |
|---|
| 88 | ! Bugfix: allow compilation without __parallel. |
|---|
| 89 | ! |
|---|
| 90 | ! 1575 2015-03-27 09:56:27Z raasch |
|---|
| 91 | ! Initial revision. |
|---|
| 92 | ! Routine re-written and optimised based on poismg. |
|---|
| 93 | ! |
|---|
| 94 | ! Following optimisations have been made: |
|---|
| 95 | ! - vectorisation (for Intel-CPUs) of the red-black algorithm by resorting |
|---|
| 96 | ! array elements with even and odd indices |
|---|
| 97 | ! - explicit boundary conditions for building walls removed (solver is |
|---|
| 98 | ! running through the buildings |
|---|
| 99 | ! - reduced data transfer in case of ghost point exchange, because only |
|---|
| 100 | ! "red" or "black" data points need to be exchanged. This is not applied |
|---|
| 101 | ! for coarser grid levels, since for then the transfer time is latency bound |
|---|
| 102 | ! |
|---|
| 103 | ! |
|---|
| 104 | ! Description: |
|---|
| 105 | ! ------------ |
|---|
| 106 | !> Solves the Poisson equation for the perturbation pressure with a multigrid |
|---|
| 107 | !> V- or W-Cycle scheme. |
|---|
| 108 | !> |
|---|
| 109 | !> This multigrid method was originally developed for PALM by Joerg Uhlenbrock, |
|---|
| 110 | !> September 2000 - July 2001. It has been optimised for speed by Klaus |
|---|
| 111 | !> Ketelsen in November 2014. |
|---|
| 112 | !> |
|---|
| 113 | !> @attention Loop unrolling and cache optimization in SOR-Red/Black method |
|---|
| 114 | !> still does not give the expected speedup! |
|---|
| 115 | !> |
|---|
| 116 | !> @todo Further work required. |
|---|
| 117 | !------------------------------------------------------------------------------! |
|---|
| 118 | MODULE poismg_mod |
|---|
| 119 | |
|---|
| 120 | USE control_parameters, & |
|---|
| 121 | ONLY: bc_dirichlet_l, bc_dirichlet_n, bc_dirichlet_r, & |
|---|
| 122 | bc_dirichlet_s, bc_radiation_l, bc_radiation_n, bc_radiation_r, & |
|---|
| 123 | bc_radiation_s, grid_level, nesting_offline |
|---|
| 124 | |
|---|
| 125 | USE cpulog, & |
|---|
| 126 | ONLY: cpu_log, log_point_s |
|---|
| 127 | |
|---|
| 128 | USE kinds |
|---|
| 129 | |
|---|
| 130 | USE pegrid |
|---|
| 131 | |
|---|
| 132 | PRIVATE |
|---|
| 133 | |
|---|
| 134 | INTEGER, SAVE :: ind_even_odd !< border index between even and odd k index |
|---|
| 135 | INTEGER, DIMENSION(:), SAVE, ALLOCATABLE :: even_odd_level !< stores ind_even_odd for all MG levels |
|---|
| 136 | |
|---|
| 137 | REAL(wp), DIMENSION(:,:), SAVE, ALLOCATABLE :: f1_mg_b, f2_mg_b, f3_mg_b !< blocked version of f1_mg ... |
|---|
| 138 | |
|---|
| 139 | INTERFACE poismg |
|---|
| 140 | MODULE PROCEDURE poismg |
|---|
| 141 | END INTERFACE poismg |
|---|
| 142 | |
|---|
| 143 | INTERFACE sort_k_to_even_odd_blocks |
|---|
| 144 | MODULE PROCEDURE sort_k_to_even_odd_blocks |
|---|
| 145 | MODULE PROCEDURE sort_k_to_even_odd_blocks_int |
|---|
| 146 | MODULE PROCEDURE sort_k_to_even_odd_blocks_1d |
|---|
| 147 | END INTERFACE sort_k_to_even_odd_blocks |
|---|
| 148 | |
|---|
| 149 | PUBLIC poismg |
|---|
| 150 | |
|---|
| 151 | CONTAINS |
|---|
| 152 | |
|---|
| 153 | !------------------------------------------------------------------------------! |
|---|
| 154 | ! Description: |
|---|
| 155 | ! ------------ |
|---|
| 156 | !> Solves the Poisson equation for the perturbation pressure with a multigrid |
|---|
| 157 | !> V- or W-Cycle scheme. |
|---|
| 158 | !------------------------------------------------------------------------------! |
|---|
| 159 | SUBROUTINE poismg( r ) |
|---|
| 160 | |
|---|
| 161 | USE arrays_3d, & |
|---|
| 162 | ONLY: d, p_loc |
|---|
| 163 | |
|---|
| 164 | USE control_parameters, & |
|---|
| 165 | ONLY: bc_lr_cyc, bc_ns_cyc, gathered_size, grid_level, & |
|---|
| 166 | grid_level_count, ibc_p_t, & |
|---|
| 167 | maximum_grid_level, message_string, mgcycles, mg_cycles, & |
|---|
| 168 | mg_switch_to_pe0_level, residual_limit, subdomain_size |
|---|
| 169 | |
|---|
| 170 | USE cpulog, & |
|---|
| 171 | ONLY: cpu_log, log_point_s |
|---|
| 172 | |
|---|
| 173 | USE indices, & |
|---|
| 174 | ONLY: nxl, nxlg, nxl_mg, nxr, nxrg, nxr_mg, nys, nysg, nys_mg, nyn,& |
|---|
| 175 | nyng, nyn_mg, nzb, nzt, nzt_mg |
|---|
| 176 | |
|---|
| 177 | IMPLICIT NONE |
|---|
| 178 | |
|---|
| 179 | REAL(wp) :: maxerror !< |
|---|
| 180 | REAL(wp) :: maximum_mgcycles !< |
|---|
| 181 | REAL(wp) :: residual_norm !< |
|---|
| 182 | |
|---|
| 183 | REAL(wp), DIMENSION(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) :: r !< |
|---|
| 184 | |
|---|
| 185 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: p3 !< |
|---|
| 186 | |
|---|
| 187 | |
|---|
| 188 | CALL cpu_log( log_point_s(29), 'poismg', 'start' ) |
|---|
| 189 | ! |
|---|
| 190 | !-- Initialize arrays and variables used in this subroutine |
|---|
| 191 | |
|---|
| 192 | !-- If the number of grid points of the gathered grid, which is collected |
|---|
| 193 | !-- on PE0, is larger than the number of grid points of an PE, than array |
|---|
| 194 | !-- p3 will be enlarged. |
|---|
| 195 | IF ( gathered_size > subdomain_size ) THEN |
|---|
| 196 | ALLOCATE( p3(nzb:nzt_mg(mg_switch_to_pe0_level)+1,nys_mg( & |
|---|
| 197 | mg_switch_to_pe0_level)-1:nyn_mg(mg_switch_to_pe0_level)+1,& |
|---|
| 198 | nxl_mg(mg_switch_to_pe0_level)-1:nxr_mg( & |
|---|
| 199 | mg_switch_to_pe0_level)+1) ) |
|---|
| 200 | ELSE |
|---|
| 201 | ALLOCATE ( p3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
|---|
| 202 | ENDIF |
|---|
| 203 | |
|---|
| 204 | p3 = 0.0_wp |
|---|
| 205 | |
|---|
| 206 | |
|---|
| 207 | ! |
|---|
| 208 | !-- Ghost boundaries have to be added to divergence array. |
|---|
| 209 | !-- Exchange routine needs to know the grid level! |
|---|
| 210 | grid_level = maximum_grid_level |
|---|
| 211 | CALL exchange_horiz( d, 1) |
|---|
| 212 | ! |
|---|
| 213 | !-- Set bottom and top boundary conditions |
|---|
| 214 | d(nzb,:,:) = d(nzb+1,:,:) |
|---|
| 215 | IF ( ibc_p_t == 1 ) d(nzt+1,:,: ) = d(nzt,:,:) |
|---|
| 216 | ! |
|---|
| 217 | !-- Set lateral boundary conditions in non-cyclic case |
|---|
| 218 | IF ( .NOT. bc_lr_cyc ) THEN |
|---|
| 219 | IF ( bc_dirichlet_l .OR. bc_radiation_l ) & |
|---|
| 220 | d(:,:,nxl-1) = d(:,:,nxl) |
|---|
| 221 | IF ( bc_dirichlet_r .OR. bc_radiation_r ) & |
|---|
| 222 | d(:,:,nxr+1) = d(:,:,nxr) |
|---|
| 223 | ENDIF |
|---|
| 224 | IF ( .NOT. bc_ns_cyc ) THEN |
|---|
| 225 | IF ( bc_dirichlet_n .OR. bc_radiation_n ) & |
|---|
| 226 | d(:,nyn+1,:) = d(:,nyn,:) |
|---|
| 227 | IF ( bc_dirichlet_s .OR. bc_radiation_s ) & |
|---|
| 228 | d(:,nys-1,:) = d(:,nys,:) |
|---|
| 229 | ENDIF |
|---|
| 230 | ! |
|---|
| 231 | !-- Initiation of the multigrid scheme. Does n cycles until the |
|---|
| 232 | !-- residual is smaller than the given limit. The accuracy of the solution |
|---|
| 233 | !-- of the poisson equation will increase with the number of cycles. |
|---|
| 234 | !-- If the number of cycles is preset by the user, this number will be |
|---|
| 235 | !-- carried out regardless of the accuracy. |
|---|
| 236 | grid_level_count = 0 |
|---|
| 237 | mgcycles = 0 |
|---|
| 238 | IF ( mg_cycles == -1 ) THEN |
|---|
| 239 | maximum_mgcycles = 0 |
|---|
| 240 | residual_norm = 1.0_wp |
|---|
| 241 | ELSE |
|---|
| 242 | maximum_mgcycles = mg_cycles |
|---|
| 243 | residual_norm = 0.0_wp |
|---|
| 244 | ENDIF |
|---|
| 245 | |
|---|
| 246 | ! |
|---|
| 247 | !-- Initial settings for sorting k-dimension from sequential order (alternate |
|---|
| 248 | !-- even/odd) into blocks of even and odd or vice versa |
|---|
| 249 | CALL init_even_odd_blocks |
|---|
| 250 | |
|---|
| 251 | ! |
|---|
| 252 | !-- Sort input arrays in even/odd blocks along k-dimension |
|---|
| 253 | CALL sort_k_to_even_odd_blocks( d, grid_level ) |
|---|
| 254 | CALL sort_k_to_even_odd_blocks( p_loc, grid_level ) |
|---|
| 255 | |
|---|
| 256 | ! |
|---|
| 257 | !-- The complete multigrid cycles are running in block mode, i.e. over |
|---|
| 258 | !-- seperate data blocks of even and odd indices |
|---|
| 259 | DO WHILE ( residual_norm > residual_limit .OR. & |
|---|
| 260 | mgcycles < maximum_mgcycles ) |
|---|
| 261 | |
|---|
| 262 | CALL next_mg_level( d, p_loc, p3, r) |
|---|
| 263 | |
|---|
| 264 | ! |
|---|
| 265 | !-- Calculate the residual if the user has not preset the number of |
|---|
| 266 | !-- cycles to be performed |
|---|
| 267 | IF ( maximum_mgcycles == 0 ) THEN |
|---|
| 268 | CALL resid( d, p_loc, r ) |
|---|
| 269 | maxerror = SUM( r(nzb+1:nzt,nys:nyn,nxl:nxr)**2 ) |
|---|
| 270 | |
|---|
| 271 | #if defined( __parallel ) |
|---|
| 272 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
|---|
| 273 | CALL MPI_ALLREDUCE( maxerror, residual_norm, 1, MPI_REAL, & |
|---|
| 274 | MPI_SUM, comm2d, ierr) |
|---|
| 275 | #else |
|---|
| 276 | residual_norm = maxerror |
|---|
| 277 | #endif |
|---|
| 278 | residual_norm = SQRT( residual_norm ) |
|---|
| 279 | ENDIF |
|---|
| 280 | |
|---|
| 281 | mgcycles = mgcycles + 1 |
|---|
| 282 | |
|---|
| 283 | ! |
|---|
| 284 | !-- If the user has not limited the number of cycles, stop the run in case |
|---|
| 285 | !-- of insufficient convergence |
|---|
| 286 | IF ( mgcycles > 1000 .AND. mg_cycles == -1 ) THEN |
|---|
| 287 | message_string = 'no sufficient convergence within 1000 cycles' |
|---|
| 288 | CALL message( 'poismg', 'PA0283', 1, 2, 0, 6, 0 ) |
|---|
| 289 | ENDIF |
|---|
| 290 | |
|---|
| 291 | ENDDO |
|---|
| 292 | |
|---|
| 293 | DEALLOCATE( p3 ) |
|---|
| 294 | ! |
|---|
| 295 | !-- Result has to be sorted back from even/odd blocks to sequential order |
|---|
| 296 | CALL sort_k_to_sequential( p_loc ) |
|---|
| 297 | ! |
|---|
| 298 | !-- Unset the grid level. Variable is used to determine the MPI datatypes for |
|---|
| 299 | !-- ghost point exchange |
|---|
| 300 | grid_level = 0 |
|---|
| 301 | |
|---|
| 302 | CALL cpu_log( log_point_s(29), 'poismg', 'stop' ) |
|---|
| 303 | |
|---|
| 304 | END SUBROUTINE poismg |
|---|
| 305 | |
|---|
| 306 | |
|---|
| 307 | !------------------------------------------------------------------------------! |
|---|
| 308 | ! Description: |
|---|
| 309 | ! ------------ |
|---|
| 310 | !> Computes the residual of the perturbation pressure. |
|---|
| 311 | !------------------------------------------------------------------------------! |
|---|
| 312 | SUBROUTINE resid( f_mg, p_mg, r ) |
|---|
| 313 | |
|---|
| 314 | |
|---|
| 315 | USE arrays_3d, & |
|---|
| 316 | ONLY: rho_air_mg |
|---|
| 317 | |
|---|
| 318 | USE control_parameters, & |
|---|
| 319 | ONLY: bc_lr_cyc, bc_ns_cyc, ibc_p_b, ibc_p_t |
|---|
| 320 | USE grid_variables, & |
|---|
| 321 | ONLY: ddx2_mg, ddy2_mg |
|---|
| 322 | |
|---|
| 323 | USE indices, & |
|---|
| 324 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
|---|
| 325 | |
|---|
| 326 | IMPLICIT NONE |
|---|
| 327 | |
|---|
| 328 | INTEGER(iwp) :: i !< index variable along x |
|---|
| 329 | INTEGER(iwp) :: j !< index variable along y |
|---|
| 330 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 331 | INTEGER(iwp) :: l !< index indicating grid level |
|---|
| 332 | INTEGER(iwp) :: km1 !< index variable along z dimension (k-1) |
|---|
| 333 | INTEGER(iwp) :: kp1 !< index variable along z dimension (k+1) |
|---|
| 334 | |
|---|
| 335 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 336 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 337 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: f_mg !< velocity divergence |
|---|
| 338 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 339 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 340 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: p_mg !< perturbation pressure |
|---|
| 341 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 342 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 343 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: r !< residuum of perturbation pressure |
|---|
| 344 | |
|---|
| 345 | ! |
|---|
| 346 | !-- Calculate the residual |
|---|
| 347 | l = grid_level |
|---|
| 348 | |
|---|
| 349 | CALL cpu_log( log_point_s(53), 'resid', 'start' ) |
|---|
| 350 | !$OMP PARALLEL PRIVATE (i,j,k,km1,kp1) |
|---|
| 351 | !$OMP DO |
|---|
| 352 | DO i = nxl_mg(l), nxr_mg(l) |
|---|
| 353 | DO j = nys_mg(l), nyn_mg(l) |
|---|
| 354 | !DIR$ IVDEP |
|---|
| 355 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 356 | km1 = k-ind_even_odd-1 |
|---|
| 357 | kp1 = k-ind_even_odd |
|---|
| 358 | r(k,j,i) = f_mg(k,j,i) & |
|---|
| 359 | - rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 360 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 361 | - rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 362 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 363 | - f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 364 | - f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 365 | + f1_mg_b(k,l) * p_mg(k,j,i) |
|---|
| 366 | ENDDO |
|---|
| 367 | !DIR$ IVDEP |
|---|
| 368 | DO k = nzb+1, ind_even_odd |
|---|
| 369 | km1 = k+ind_even_odd |
|---|
| 370 | kp1 = k+ind_even_odd+1 |
|---|
| 371 | r(k,j,i) = f_mg(k,j,i) & |
|---|
| 372 | - rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 373 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 374 | - rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 375 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 376 | - f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 377 | - f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 378 | + f1_mg_b(k,l) * p_mg(k,j,i) |
|---|
| 379 | ENDDO |
|---|
| 380 | ENDDO |
|---|
| 381 | ENDDO |
|---|
| 382 | !$OMP END PARALLEL |
|---|
| 383 | ! |
|---|
| 384 | !-- Horizontal boundary conditions |
|---|
| 385 | CALL exchange_horiz( r, 1) |
|---|
| 386 | |
|---|
| 387 | IF ( .NOT. bc_lr_cyc ) THEN |
|---|
| 388 | IF ( bc_dirichlet_l .OR. bc_radiation_l ) THEN |
|---|
| 389 | r(:,:,nxl_mg(l)-1) = r(:,:,nxl_mg(l)) |
|---|
| 390 | ENDIF |
|---|
| 391 | IF ( bc_dirichlet_r .OR. bc_radiation_r ) THEN |
|---|
| 392 | r(:,:,nxr_mg(l)+1) = r(:,:,nxr_mg(l)) |
|---|
| 393 | ENDIF |
|---|
| 394 | ENDIF |
|---|
| 395 | |
|---|
| 396 | IF ( .NOT. bc_ns_cyc ) THEN |
|---|
| 397 | IF ( bc_dirichlet_n .OR. bc_radiation_n ) THEN |
|---|
| 398 | r(:,nyn_mg(l)+1,:) = r(:,nyn_mg(l),:) |
|---|
| 399 | ENDIF |
|---|
| 400 | IF ( bc_dirichlet_s .OR. bc_radiation_s ) THEN |
|---|
| 401 | r(:,nys_mg(l)-1,:) = r(:,nys_mg(l),:) |
|---|
| 402 | ENDIF |
|---|
| 403 | ENDIF |
|---|
| 404 | |
|---|
| 405 | ! |
|---|
| 406 | !-- Boundary conditions at bottom and top of the domain. Points may be within |
|---|
| 407 | !-- buildings, but that doesn't matter. |
|---|
| 408 | IF ( ibc_p_b == 1 ) THEN |
|---|
| 409 | ! |
|---|
| 410 | !-- equivalent to r(nzb,:,: ) = r(nzb+1,:,:) |
|---|
| 411 | r(nzb,:,: ) = r(ind_even_odd+1,:,:) |
|---|
| 412 | ELSE |
|---|
| 413 | r(nzb,:,: ) = 0.0_wp |
|---|
| 414 | ENDIF |
|---|
| 415 | |
|---|
| 416 | IF ( ibc_p_t == 1 ) THEN |
|---|
| 417 | ! |
|---|
| 418 | !-- equivalent to r(nzt_mg(l)+1,:,: ) = r(nzt_mg(l),:,:) |
|---|
| 419 | r(nzt_mg(l)+1,:,: ) = r(ind_even_odd,:,:) |
|---|
| 420 | ELSE |
|---|
| 421 | r(nzt_mg(l)+1,:,: ) = 0.0_wp |
|---|
| 422 | ENDIF |
|---|
| 423 | |
|---|
| 424 | CALL cpu_log( log_point_s(53), 'resid', 'stop' ) |
|---|
| 425 | |
|---|
| 426 | END SUBROUTINE resid |
|---|
| 427 | |
|---|
| 428 | |
|---|
| 429 | !------------------------------------------------------------------------------! |
|---|
| 430 | ! Description: |
|---|
| 431 | ! ------------ |
|---|
| 432 | !> Interpolates the residual on the next coarser grid with "full weighting" |
|---|
| 433 | !> scheme |
|---|
| 434 | !------------------------------------------------------------------------------! |
|---|
| 435 | SUBROUTINE restrict( f_mg, r ) |
|---|
| 436 | |
|---|
| 437 | |
|---|
| 438 | USE control_parameters, & |
|---|
| 439 | ONLY: bc_lr_cyc, bc_ns_cyc, ibc_p_b, ibc_p_t |
|---|
| 440 | |
|---|
| 441 | USE indices, & |
|---|
| 442 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
|---|
| 443 | |
|---|
| 444 | IMPLICIT NONE |
|---|
| 445 | |
|---|
| 446 | INTEGER(iwp) :: i !< index variable along x on finer grid |
|---|
| 447 | INTEGER(iwp) :: ic !< index variable along x on coarser grid |
|---|
| 448 | INTEGER(iwp) :: j !< index variable along y on finer grid |
|---|
| 449 | INTEGER(iwp) :: jc !< index variable along y on coarser grid |
|---|
| 450 | INTEGER(iwp) :: k !< index variable along z on finer grid |
|---|
| 451 | INTEGER(iwp) :: kc !< index variable along z on coarser grid |
|---|
| 452 | INTEGER(iwp) :: l !< index indicating finer grid level |
|---|
| 453 | INTEGER(iwp) :: km1 !< index variable along z dimension (k-1 on finer level) |
|---|
| 454 | INTEGER(iwp) :: kp1 !< index variable along z dimension (k+1 on finer level) |
|---|
| 455 | |
|---|
| 456 | |
|---|
| 457 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 458 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 459 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: & |
|---|
| 460 | f_mg !< Residual on coarser grid level |
|---|
| 461 | |
|---|
| 462 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level+1)+1, & |
|---|
| 463 | nys_mg(grid_level+1)-1:nyn_mg(grid_level+1)+1, & |
|---|
| 464 | nxl_mg(grid_level+1)-1:nxr_mg(grid_level+1)+1) :: & |
|---|
| 465 | r !< Residual on finer grid level |
|---|
| 466 | |
|---|
| 467 | ! |
|---|
| 468 | !-- Interpolate the residual |
|---|
| 469 | l = grid_level |
|---|
| 470 | |
|---|
| 471 | CALL cpu_log( log_point_s(54), 'restrict', 'start' ) |
|---|
| 472 | ! |
|---|
| 473 | !-- No wall treatment |
|---|
| 474 | !$OMP PARALLEL PRIVATE (i,j,k,ic,jc,kc,km1,kp1) |
|---|
| 475 | !$OMP DO SCHEDULE( STATIC ) |
|---|
| 476 | DO ic = nxl_mg(l), nxr_mg(l) |
|---|
| 477 | i = 2*ic |
|---|
| 478 | DO jc = nys_mg(l), nyn_mg(l) |
|---|
| 479 | ! |
|---|
| 480 | !-- Calculation for the first point along k |
|---|
| 481 | j = 2*jc |
|---|
| 482 | ! |
|---|
| 483 | !-- Calculation for the other points along k |
|---|
| 484 | !DIR$ IVDEP |
|---|
| 485 | DO k = ind_even_odd+1, nzt_mg(l+1) ! Fine grid at this point |
|---|
| 486 | km1 = k-ind_even_odd-1 |
|---|
| 487 | kp1 = k-ind_even_odd |
|---|
| 488 | kc = k-ind_even_odd ! Coarse grid index |
|---|
| 489 | |
|---|
| 490 | f_mg(kc,jc,ic) = 1.0_wp / 64.0_wp * ( & |
|---|
| 491 | 8.0_wp * r(k,j,i) & |
|---|
| 492 | + 4.0_wp * ( r(k,j,i-1) + r(k,j,i+1) + & |
|---|
| 493 | r(k,j+1,i) + r(k,j-1,i) ) & |
|---|
| 494 | + 2.0_wp * ( r(k,j-1,i-1) + r(k,j+1,i-1) + & |
|---|
| 495 | r(k,j-1,i+1) + r(k,j+1,i+1) ) & |
|---|
| 496 | + 4.0_wp * r(km1,j,i) & |
|---|
| 497 | + 2.0_wp * ( r(km1,j,i-1) + r(km1,j,i+1) + & |
|---|
| 498 | r(km1,j+1,i) + r(km1,j-1,i) ) & |
|---|
| 499 | + ( r(km1,j-1,i-1) + r(km1,j+1,i-1) + & |
|---|
| 500 | r(km1,j-1,i+1) + r(km1,j+1,i+1) ) & |
|---|
| 501 | + 4.0_wp * r(kp1,j,i) & |
|---|
| 502 | + 2.0_wp * ( r(kp1,j,i-1) + r(kp1,j,i+1) + & |
|---|
| 503 | r(kp1,j+1,i) + r(kp1,j-1,i) ) & |
|---|
| 504 | + ( r(kp1,j-1,i-1) + r(kp1,j+1,i-1) + & |
|---|
| 505 | r(kp1,j-1,i+1) + r(kp1,j+1,i+1) ) & |
|---|
| 506 | ) |
|---|
| 507 | ENDDO |
|---|
| 508 | ENDDO |
|---|
| 509 | ENDDO |
|---|
| 510 | !$OMP ENDDO |
|---|
| 511 | !$OMP END PARALLEL |
|---|
| 512 | |
|---|
| 513 | ! |
|---|
| 514 | !-- Ghost point exchange |
|---|
| 515 | CALL exchange_horiz( f_mg, 1) |
|---|
| 516 | ! |
|---|
| 517 | !-- Horizontal boundary conditions |
|---|
| 518 | IF ( .NOT. bc_lr_cyc ) THEN |
|---|
| 519 | IF ( bc_dirichlet_l .OR. bc_radiation_l ) THEN |
|---|
| 520 | f_mg(:,:,nxl_mg(l)-1) = f_mg(:,:,nxl_mg(l)) |
|---|
| 521 | ENDIF |
|---|
| 522 | IF ( bc_dirichlet_r .OR. bc_radiation_r ) THEN |
|---|
| 523 | f_mg(:,:,nxr_mg(l)+1) = f_mg(:,:,nxr_mg(l)) |
|---|
| 524 | ENDIF |
|---|
| 525 | ENDIF |
|---|
| 526 | |
|---|
| 527 | IF ( .NOT. bc_ns_cyc ) THEN |
|---|
| 528 | IF ( bc_dirichlet_n .OR. bc_radiation_n ) THEN |
|---|
| 529 | f_mg(:,nyn_mg(l)+1,:) = f_mg(:,nyn_mg(l),:) |
|---|
| 530 | ENDIF |
|---|
| 531 | IF ( bc_dirichlet_s .OR. bc_radiation_s ) THEN |
|---|
| 532 | f_mg(:,nys_mg(l)-1,:) = f_mg(:,nys_mg(l),:) |
|---|
| 533 | ENDIF |
|---|
| 534 | ENDIF |
|---|
| 535 | |
|---|
| 536 | ! |
|---|
| 537 | !-- Boundary conditions at bottom and top of the domain. |
|---|
| 538 | !-- These points are not handled by the above loop. Points may be within |
|---|
| 539 | !-- buildings, but that doesn't matter. Remark: f_mg is ordered sequentielly |
|---|
| 540 | !-- after interpolation on coarse grid (is ordered in odd-even blocks further |
|---|
| 541 | !-- below). |
|---|
| 542 | IF ( ibc_p_b == 1 ) THEN |
|---|
| 543 | f_mg(nzb,:,: ) = f_mg(nzb+1,:,:) |
|---|
| 544 | ELSE |
|---|
| 545 | f_mg(nzb,:,: ) = 0.0_wp |
|---|
| 546 | ENDIF |
|---|
| 547 | |
|---|
| 548 | IF ( ibc_p_t == 1 ) THEN |
|---|
| 549 | f_mg(nzt_mg(l)+1,:,: ) = f_mg(nzt_mg(l),:,:) |
|---|
| 550 | ELSE |
|---|
| 551 | f_mg(nzt_mg(l)+1,:,: ) = 0.0_wp |
|---|
| 552 | ENDIF |
|---|
| 553 | |
|---|
| 554 | CALL cpu_log( log_point_s(54), 'restrict', 'stop' ) |
|---|
| 555 | ! |
|---|
| 556 | !-- Since residual is in sequential order after interpolation, an additional |
|---|
| 557 | !-- sorting in odd-even blocks along z dimension is required at this point. |
|---|
| 558 | CALL sort_k_to_even_odd_blocks( f_mg , l) |
|---|
| 559 | |
|---|
| 560 | END SUBROUTINE restrict |
|---|
| 561 | |
|---|
| 562 | |
|---|
| 563 | !------------------------------------------------------------------------------! |
|---|
| 564 | ! Description: |
|---|
| 565 | ! ------------ |
|---|
| 566 | !> Interpolates the correction of the perturbation pressure |
|---|
| 567 | !> to the next finer grid. |
|---|
| 568 | !------------------------------------------------------------------------------! |
|---|
| 569 | SUBROUTINE prolong( p, temp ) |
|---|
| 570 | |
|---|
| 571 | |
|---|
| 572 | USE control_parameters, & |
|---|
| 573 | ONLY: bc_lr_cyc, bc_ns_cyc, ibc_p_b, ibc_p_t |
|---|
| 574 | USE indices, & |
|---|
| 575 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
|---|
| 576 | |
|---|
| 577 | IMPLICIT NONE |
|---|
| 578 | |
|---|
| 579 | INTEGER(iwp) :: i !< index variable along x on coarser grid level |
|---|
| 580 | INTEGER(iwp) :: j !< index variable along y on coarser grid level |
|---|
| 581 | INTEGER(iwp) :: k !< index variable along z on coarser grid level |
|---|
| 582 | INTEGER(iwp) :: l !< index indicating finer grid level |
|---|
| 583 | INTEGER(iwp) :: kp1 !< index variable along z |
|---|
| 584 | INTEGER(iwp) :: ke !< index for prolog even |
|---|
| 585 | INTEGER(iwp) :: ko !< index for prolog odd |
|---|
| 586 | |
|---|
| 587 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level-1)+1, & |
|---|
| 588 | nys_mg(grid_level-1)-1:nyn_mg(grid_level-1)+1, & |
|---|
| 589 | nxl_mg(grid_level-1)-1:nxr_mg(grid_level-1)+1 ) :: & |
|---|
| 590 | p !< perturbation pressure on coarser grid level |
|---|
| 591 | |
|---|
| 592 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 593 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 594 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: & |
|---|
| 595 | temp !< perturbation pressure on finer grid level |
|---|
| 596 | |
|---|
| 597 | |
|---|
| 598 | CALL cpu_log( log_point_s(55), 'prolong', 'start' ) |
|---|
| 599 | |
|---|
| 600 | ! |
|---|
| 601 | !-- First, store elements of the coarser grid on the next finer grid |
|---|
| 602 | l = grid_level |
|---|
| 603 | ind_even_odd = even_odd_level(grid_level-1) |
|---|
| 604 | |
|---|
| 605 | !$OMP PARALLEL PRIVATE (i,j,k,kp1,ke,ko) |
|---|
| 606 | !$OMP DO |
|---|
| 607 | DO i = nxl_mg(l-1), nxr_mg(l-1) |
|---|
| 608 | DO j = nys_mg(l-1), nyn_mg(l-1) |
|---|
| 609 | |
|---|
| 610 | !DIR$ IVDEP |
|---|
| 611 | DO k = ind_even_odd+1, nzt_mg(l-1) |
|---|
| 612 | kp1 = k - ind_even_odd |
|---|
| 613 | ke = 2 * ( k-ind_even_odd - 1 ) + 1 |
|---|
| 614 | ko = 2 * k - 1 |
|---|
| 615 | ! |
|---|
| 616 | !-- Points of the coarse grid are directly stored on the next finer |
|---|
| 617 | !-- grid |
|---|
| 618 | temp(ko,2*j,2*i) = p(k,j,i) |
|---|
| 619 | ! |
|---|
| 620 | !-- Points between two coarse-grid points |
|---|
| 621 | temp(ko,2*j,2*i+1) = 0.5_wp * ( p(k,j,i) + p(k,j,i+1) ) |
|---|
| 622 | temp(ko,2*j+1,2*i) = 0.5_wp * ( p(k,j,i) + p(k,j+1,i) ) |
|---|
| 623 | temp(ke,2*j,2*i) = 0.5_wp * ( p(k,j,i) + p(kp1,j,i) ) |
|---|
| 624 | ! |
|---|
| 625 | !-- Points in the center of the planes stretched by four points |
|---|
| 626 | !-- of the coarse grid cube |
|---|
| 627 | temp(ko,2*j+1,2*i+1) = 0.25_wp * ( p(k,j,i) + p(k,j,i+1) + & |
|---|
| 628 | p(k,j+1,i) + p(k,j+1,i+1) ) |
|---|
| 629 | temp(ke,2*j,2*i+1) = 0.25_wp * ( p(k,j,i) + p(k,j,i+1) + & |
|---|
| 630 | p(kp1,j,i) + p(kp1,j,i+1) ) |
|---|
| 631 | temp(ke,2*j+1,2*i) = 0.25_wp * ( p(k,j,i) + p(k,j+1,i) + & |
|---|
| 632 | p(kp1,j,i) + p(kp1,j+1,i) ) |
|---|
| 633 | ! |
|---|
| 634 | !-- Points in the middle of coarse grid cube |
|---|
| 635 | temp(ke,2*j+1,2*i+1) = 0.125_wp * & |
|---|
| 636 | ( p(k,j,i) + p(k,j,i+1) + & |
|---|
| 637 | p(k,j+1,i) + p(k,j+1,i+1) + & |
|---|
| 638 | p(kp1,j,i) + p(kp1,j,i+1) + & |
|---|
| 639 | p(kp1,j+1,i) + p(kp1,j+1,i+1) ) |
|---|
| 640 | |
|---|
| 641 | ENDDO |
|---|
| 642 | |
|---|
| 643 | !DIR$ IVDEP |
|---|
| 644 | DO k = nzb+1, ind_even_odd |
|---|
| 645 | kp1 = k + ind_even_odd + 1 |
|---|
| 646 | ke = 2 * k |
|---|
| 647 | ko = 2 * ( k + ind_even_odd ) |
|---|
| 648 | ! |
|---|
| 649 | !-- Points of the coarse grid are directly stored on the next finer |
|---|
| 650 | !-- grid |
|---|
| 651 | temp(ko,2*j,2*i) = p(k,j,i) |
|---|
| 652 | ! |
|---|
| 653 | !-- Points between two coarse-grid points |
|---|
| 654 | temp(ko,2*j,2*i+1) = 0.5_wp * ( p(k,j,i) + p(k,j,i+1) ) |
|---|
| 655 | temp(ko,2*j+1,2*i) = 0.5_wp * ( p(k,j,i) + p(k,j+1,i) ) |
|---|
| 656 | temp(ke,2*j,2*i) = 0.5_wp * ( p(k,j,i) + p(kp1,j,i) ) |
|---|
| 657 | ! |
|---|
| 658 | !-- Points in the center of the planes stretched by four points |
|---|
| 659 | !-- of the coarse grid cube |
|---|
| 660 | temp(ko,2*j+1,2*i+1) = 0.25_wp * ( p(k,j,i) + p(k,j,i+1) + & |
|---|
| 661 | p(k,j+1,i) + p(k,j+1,i+1) ) |
|---|
| 662 | temp(ke,2*j,2*i+1) = 0.25_wp * ( p(k,j,i) + p(k,j,i+1) + & |
|---|
| 663 | p(kp1,j,i) + p(kp1,j,i+1) ) |
|---|
| 664 | temp(ke,2*j+1,2*i) = 0.25_wp * ( p(k,j,i) + p(k,j+1,i) + & |
|---|
| 665 | p(kp1,j,i) + p(kp1,j+1,i) ) |
|---|
| 666 | ! |
|---|
| 667 | !-- Points in the middle of coarse grid cube |
|---|
| 668 | temp(ke,2*j+1,2*i+1) = 0.125_wp * & |
|---|
| 669 | ( p(k,j,i) + p(k,j,i+1) + & |
|---|
| 670 | p(k,j+1,i) + p(k,j+1,i+1) + & |
|---|
| 671 | p(kp1,j,i) + p(kp1,j,i+1) + & |
|---|
| 672 | p(kp1,j+1,i) + p(kp1,j+1,i+1) ) |
|---|
| 673 | |
|---|
| 674 | ENDDO |
|---|
| 675 | |
|---|
| 676 | ENDDO |
|---|
| 677 | ENDDO |
|---|
| 678 | !$OMP END PARALLEL |
|---|
| 679 | |
|---|
| 680 | ind_even_odd = even_odd_level(grid_level) |
|---|
| 681 | ! |
|---|
| 682 | !-- Horizontal boundary conditions |
|---|
| 683 | CALL exchange_horiz( temp, 1) |
|---|
| 684 | |
|---|
| 685 | IF ( .NOT. bc_lr_cyc ) THEN |
|---|
| 686 | IF ( bc_dirichlet_l .OR. bc_radiation_l ) THEN |
|---|
| 687 | temp(:,:,nxl_mg(l)-1) = temp(:,:,nxl_mg(l)) |
|---|
| 688 | ENDIF |
|---|
| 689 | IF ( bc_dirichlet_r .OR. bc_radiation_r ) THEN |
|---|
| 690 | temp(:,:,nxr_mg(l)+1) = temp(:,:,nxr_mg(l)) |
|---|
| 691 | ENDIF |
|---|
| 692 | ENDIF |
|---|
| 693 | |
|---|
| 694 | IF ( .NOT. bc_ns_cyc ) THEN |
|---|
| 695 | IF ( bc_dirichlet_n .OR. bc_radiation_n ) THEN |
|---|
| 696 | temp(:,nyn_mg(l)+1,:) = temp(:,nyn_mg(l),:) |
|---|
| 697 | ENDIF |
|---|
| 698 | IF ( bc_dirichlet_s .OR. bc_radiation_s ) THEN |
|---|
| 699 | temp(:,nys_mg(l)-1,:) = temp(:,nys_mg(l),:) |
|---|
| 700 | ENDIF |
|---|
| 701 | ENDIF |
|---|
| 702 | |
|---|
| 703 | ! |
|---|
| 704 | !-- Bottom and top boundary conditions |
|---|
| 705 | IF ( ibc_p_b == 1 ) THEN |
|---|
| 706 | ! |
|---|
| 707 | !-- equivalent to temp(nzb,:,: ) = temp(nzb+1,:,:) |
|---|
| 708 | temp(nzb,:,: ) = temp(ind_even_odd+1,:,:) |
|---|
| 709 | ELSE |
|---|
| 710 | temp(nzb,:,: ) = 0.0_wp |
|---|
| 711 | ENDIF |
|---|
| 712 | |
|---|
| 713 | IF ( ibc_p_t == 1 ) THEN |
|---|
| 714 | ! |
|---|
| 715 | !-- equivalent to temp(nzt_mg(l)+1,:,: ) = temp(nzt_mg(l),:,:) |
|---|
| 716 | temp(nzt_mg(l)+1,:,: ) = temp(ind_even_odd,:,:) |
|---|
| 717 | ELSE |
|---|
| 718 | temp(nzt_mg(l)+1,:,: ) = 0.0_wp |
|---|
| 719 | ENDIF |
|---|
| 720 | |
|---|
| 721 | CALL cpu_log( log_point_s(55), 'prolong', 'stop' ) |
|---|
| 722 | |
|---|
| 723 | END SUBROUTINE prolong |
|---|
| 724 | |
|---|
| 725 | |
|---|
| 726 | !------------------------------------------------------------------------------! |
|---|
| 727 | ! Description: |
|---|
| 728 | ! ------------ |
|---|
| 729 | !> Relaxation method for the multigrid scheme. A Gauss-Seidel iteration with |
|---|
| 730 | !> 3D-Red-Black decomposition (GS-RB) is used. |
|---|
| 731 | !------------------------------------------------------------------------------! |
|---|
| 732 | SUBROUTINE redblack( f_mg, p_mg ) |
|---|
| 733 | |
|---|
| 734 | |
|---|
| 735 | USE arrays_3d, & |
|---|
| 736 | ONLY: rho_air_mg |
|---|
| 737 | |
|---|
| 738 | USE control_parameters, & |
|---|
| 739 | ONLY: bc_lr_cyc, bc_ns_cyc, ibc_p_b, ibc_p_t, ngsrb |
|---|
| 740 | |
|---|
| 741 | USE grid_variables, & |
|---|
| 742 | ONLY: ddx2_mg, ddy2_mg |
|---|
| 743 | |
|---|
| 744 | USE indices, & |
|---|
| 745 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
|---|
| 746 | |
|---|
| 747 | IMPLICIT NONE |
|---|
| 748 | |
|---|
| 749 | INTEGER(iwp) :: color !< grid point color, either red or black |
|---|
| 750 | INTEGER(iwp) :: i !< index variable along x |
|---|
| 751 | INTEGER(iwp) :: ic !< index variable along x |
|---|
| 752 | INTEGER(iwp) :: j !< index variable along y |
|---|
| 753 | INTEGER(iwp) :: jc !< index variable along y |
|---|
| 754 | INTEGER(iwp) :: jj !< index variable along y |
|---|
| 755 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 756 | INTEGER(iwp) :: l !< grid level |
|---|
| 757 | INTEGER(iwp) :: n !< loop variable GauÃ-Seidel iterations |
|---|
| 758 | INTEGER(iwp) :: km1 !< index variable (k-1) |
|---|
| 759 | INTEGER(iwp) :: kp1 !< index variable (k+1) |
|---|
| 760 | |
|---|
| 761 | LOGICAL :: unroll !< flag indicating whether loop unrolling is possible |
|---|
| 762 | |
|---|
| 763 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 764 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 765 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: & |
|---|
| 766 | f_mg !< residual of perturbation pressure |
|---|
| 767 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 768 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 769 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: & |
|---|
| 770 | p_mg !< perturbation pressure |
|---|
| 771 | |
|---|
| 772 | l = grid_level |
|---|
| 773 | |
|---|
| 774 | unroll = ( MOD( nyn_mg(l)-nys_mg(l)+1, 4 ) == 0 .AND. & |
|---|
| 775 | MOD( nxr_mg(l)-nxl_mg(l)+1, 2 ) == 0 ) |
|---|
| 776 | |
|---|
| 777 | DO n = 1, ngsrb |
|---|
| 778 | |
|---|
| 779 | DO color = 1, 2 |
|---|
| 780 | |
|---|
| 781 | IF ( .NOT. unroll ) THEN |
|---|
| 782 | |
|---|
| 783 | CALL cpu_log( log_point_s(36), 'redblack_no_unroll_f', 'start' ) |
|---|
| 784 | ! |
|---|
| 785 | !-- Without unrolling of loops, no cache optimization |
|---|
| 786 | !$OMP PARALLEL PRIVATE (i,j,k,km1,kp1) |
|---|
| 787 | !$OMP DO |
|---|
| 788 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 789 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 790 | !DIR$ IVDEP |
|---|
| 791 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 792 | km1 = k-ind_even_odd-1 |
|---|
| 793 | kp1 = k-ind_even_odd |
|---|
| 794 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 795 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 796 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 797 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 798 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 799 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 800 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 801 | - f_mg(k,j,i) ) |
|---|
| 802 | ENDDO |
|---|
| 803 | ENDDO |
|---|
| 804 | ENDDO |
|---|
| 805 | |
|---|
| 806 | !$OMP DO |
|---|
| 807 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 808 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 809 | !DIR$ IVDEP |
|---|
| 810 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 811 | km1 = k-ind_even_odd-1 |
|---|
| 812 | kp1 = k-ind_even_odd |
|---|
| 813 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 814 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 815 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 816 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 817 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 818 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 819 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 820 | - f_mg(k,j,i) ) |
|---|
| 821 | ENDDO |
|---|
| 822 | ENDDO |
|---|
| 823 | ENDDO |
|---|
| 824 | |
|---|
| 825 | !$OMP DO |
|---|
| 826 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 827 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 828 | !DIR$ IVDEP |
|---|
| 829 | DO k = nzb+1, ind_even_odd |
|---|
| 830 | km1 = k+ind_even_odd |
|---|
| 831 | kp1 = k+ind_even_odd+1 |
|---|
| 832 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 833 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 834 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 835 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 836 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 837 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 838 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 839 | - f_mg(k,j,i) ) |
|---|
| 840 | ENDDO |
|---|
| 841 | ENDDO |
|---|
| 842 | ENDDO |
|---|
| 843 | |
|---|
| 844 | !$OMP DO |
|---|
| 845 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 846 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 847 | !DIR$ IVDEP |
|---|
| 848 | DO k = nzb+1, ind_even_odd |
|---|
| 849 | km1 = k+ind_even_odd |
|---|
| 850 | kp1 = k+ind_even_odd+1 |
|---|
| 851 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 852 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 853 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 854 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 855 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 856 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 857 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 858 | - f_mg(k,j,i) ) |
|---|
| 859 | ENDDO |
|---|
| 860 | ENDDO |
|---|
| 861 | ENDDO |
|---|
| 862 | !$OMP END PARALLEL |
|---|
| 863 | |
|---|
| 864 | CALL cpu_log( log_point_s(36), 'redblack_no_unroll_f', 'stop' ) |
|---|
| 865 | |
|---|
| 866 | ELSE |
|---|
| 867 | ! |
|---|
| 868 | !-- Loop unrolling along y, only one i loop for better cache use |
|---|
| 869 | CALL cpu_log( log_point_s(38), 'redblack_unroll_f', 'start' ) |
|---|
| 870 | |
|---|
| 871 | !$OMP PARALLEL PRIVATE (i,j,k,ic,jc,km1,kp1,jj) |
|---|
| 872 | !$OMP DO |
|---|
| 873 | DO ic = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 874 | DO jc = nys_mg(l), nyn_mg(l), 4 |
|---|
| 875 | i = ic |
|---|
| 876 | jj = jc+2-color |
|---|
| 877 | !DIR$ IVDEP |
|---|
| 878 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 879 | km1 = k-ind_even_odd-1 |
|---|
| 880 | kp1 = k-ind_even_odd |
|---|
| 881 | j = jj |
|---|
| 882 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 883 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 884 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 885 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 886 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 887 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 888 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 889 | - f_mg(k,j,i) ) |
|---|
| 890 | j = jj+2 |
|---|
| 891 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 892 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 893 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 894 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 895 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 896 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 897 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 898 | - f_mg(k,j,i) ) |
|---|
| 899 | ENDDO |
|---|
| 900 | |
|---|
| 901 | i = ic+1 |
|---|
| 902 | jj = jc+color-1 |
|---|
| 903 | !DIR$ IVDEP |
|---|
| 904 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 905 | km1 = k-ind_even_odd-1 |
|---|
| 906 | kp1 = k-ind_even_odd |
|---|
| 907 | j = jj |
|---|
| 908 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 909 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 910 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 911 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 912 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 913 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 914 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 915 | - f_mg(k,j,i) ) |
|---|
| 916 | j = jj+2 |
|---|
| 917 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 918 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 919 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 920 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 921 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 922 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 923 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 924 | - f_mg(k,j,i) ) |
|---|
| 925 | ENDDO |
|---|
| 926 | |
|---|
| 927 | i = ic |
|---|
| 928 | jj = jc+color-1 |
|---|
| 929 | !DIR$ IVDEP |
|---|
| 930 | DO k = nzb+1, ind_even_odd |
|---|
| 931 | km1 = k+ind_even_odd |
|---|
| 932 | kp1 = k+ind_even_odd+1 |
|---|
| 933 | j = jj |
|---|
| 934 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 935 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 936 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 937 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 938 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 939 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 940 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 941 | - f_mg(k,j,i) ) |
|---|
| 942 | j = jj+2 |
|---|
| 943 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 944 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 945 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 946 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 947 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 948 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 949 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 950 | - f_mg(k,j,i) ) |
|---|
| 951 | ENDDO |
|---|
| 952 | |
|---|
| 953 | i = ic+1 |
|---|
| 954 | jj = jc+2-color |
|---|
| 955 | !DIR$ IVDEP |
|---|
| 956 | DO k = nzb+1, ind_even_odd |
|---|
| 957 | km1 = k+ind_even_odd |
|---|
| 958 | kp1 = k+ind_even_odd+1 |
|---|
| 959 | j = jj |
|---|
| 960 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 961 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 962 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 963 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 964 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 965 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 966 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 967 | - f_mg(k,j,i) ) |
|---|
| 968 | j = jj+2 |
|---|
| 969 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 970 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 971 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 972 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 973 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 974 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 975 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 976 | - f_mg(k,j,i) ) |
|---|
| 977 | ENDDO |
|---|
| 978 | |
|---|
| 979 | ENDDO |
|---|
| 980 | ENDDO |
|---|
| 981 | !$OMP END PARALLEL |
|---|
| 982 | |
|---|
| 983 | CALL cpu_log( log_point_s(38), 'redblack_unroll_f', 'stop' ) |
|---|
| 984 | |
|---|
| 985 | ENDIF |
|---|
| 986 | |
|---|
| 987 | ! |
|---|
| 988 | !-- Horizontal boundary conditions |
|---|
| 989 | CALL special_exchange_horiz( p_mg, color ) |
|---|
| 990 | |
|---|
| 991 | IF ( .NOT. bc_lr_cyc ) THEN |
|---|
| 992 | IF ( bc_dirichlet_l .OR. bc_radiation_l ) THEN |
|---|
| 993 | p_mg(:,:,nxl_mg(l)-1) = p_mg(:,:,nxl_mg(l)) |
|---|
| 994 | ENDIF |
|---|
| 995 | IF ( bc_dirichlet_r .OR. bc_radiation_r ) THEN |
|---|
| 996 | p_mg(:,:,nxr_mg(l)+1) = p_mg(:,:,nxr_mg(l)) |
|---|
| 997 | ENDIF |
|---|
| 998 | ENDIF |
|---|
| 999 | |
|---|
| 1000 | IF ( .NOT. bc_ns_cyc ) THEN |
|---|
| 1001 | IF ( bc_dirichlet_n .OR. bc_radiation_n ) THEN |
|---|
| 1002 | p_mg(:,nyn_mg(l)+1,:) = p_mg(:,nyn_mg(l),:) |
|---|
| 1003 | ENDIF |
|---|
| 1004 | IF ( bc_dirichlet_s .OR. bc_radiation_s ) THEN |
|---|
| 1005 | p_mg(:,nys_mg(l)-1,:) = p_mg(:,nys_mg(l),:) |
|---|
| 1006 | ENDIF |
|---|
| 1007 | ENDIF |
|---|
| 1008 | |
|---|
| 1009 | ! |
|---|
| 1010 | !-- Bottom and top boundary conditions |
|---|
| 1011 | IF ( ibc_p_b == 1 ) THEN |
|---|
| 1012 | ! |
|---|
| 1013 | !-- equivalent to p_mg(nzb,:,: ) = p_mg(nzb+1,:,:) |
|---|
| 1014 | p_mg(nzb,:,: ) = p_mg(ind_even_odd+1,:,:) |
|---|
| 1015 | ELSE |
|---|
| 1016 | p_mg(nzb,:,: ) = 0.0_wp |
|---|
| 1017 | ENDIF |
|---|
| 1018 | |
|---|
| 1019 | IF ( ibc_p_t == 1 ) THEN |
|---|
| 1020 | ! |
|---|
| 1021 | !-- equivalent to p_mg(nzt_mg(l)+1,:,: ) = p_mg(nzt_mg(l),:,:) |
|---|
| 1022 | p_mg(nzt_mg(l)+1,:,: ) = p_mg(ind_even_odd,:,:) |
|---|
| 1023 | ELSE |
|---|
| 1024 | p_mg(nzt_mg(l)+1,:,: ) = 0.0_wp |
|---|
| 1025 | ENDIF |
|---|
| 1026 | |
|---|
| 1027 | ENDDO |
|---|
| 1028 | |
|---|
| 1029 | ENDDO |
|---|
| 1030 | |
|---|
| 1031 | END SUBROUTINE redblack |
|---|
| 1032 | |
|---|
| 1033 | |
|---|
| 1034 | !------------------------------------------------------------------------------! |
|---|
| 1035 | ! Description: |
|---|
| 1036 | ! ------------ |
|---|
| 1037 | !> Sort k-Dimension from sequential into blocks of even and odd. |
|---|
| 1038 | !> This is required to vectorize the red-black subroutine. |
|---|
| 1039 | !> Version for 3D-REAL arrays |
|---|
| 1040 | !------------------------------------------------------------------------------! |
|---|
| 1041 | SUBROUTINE sort_k_to_even_odd_blocks( p_mg , glevel ) |
|---|
| 1042 | |
|---|
| 1043 | |
|---|
| 1044 | USE indices, & |
|---|
| 1045 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
|---|
| 1046 | |
|---|
| 1047 | IMPLICIT NONE |
|---|
| 1048 | |
|---|
| 1049 | INTEGER(iwp), INTENT(IN) :: glevel !< grid level |
|---|
| 1050 | |
|---|
| 1051 | REAL(wp), DIMENSION(nzb:nzt_mg(glevel)+1, & |
|---|
| 1052 | nys_mg(glevel)-1:nyn_mg(glevel)+1, & |
|---|
| 1053 | nxl_mg(glevel)-1:nxr_mg(glevel)+1) :: & |
|---|
| 1054 | p_mg !< array to be sorted |
|---|
| 1055 | ! |
|---|
| 1056 | !-- Local variables |
|---|
| 1057 | INTEGER(iwp) :: i !< index variable along x |
|---|
| 1058 | INTEGER(iwp) :: j !< index variable along y |
|---|
| 1059 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 1060 | INTEGER(iwp) :: l !< grid level |
|---|
| 1061 | INTEGER(iwp) :: ind !< index variable along z |
|---|
| 1062 | REAL(wp), DIMENSION(nzb:nzt_mg(glevel)+1) :: tmp !< odd-even sorted temporary array |
|---|
| 1063 | |
|---|
| 1064 | |
|---|
| 1065 | CALL cpu_log( log_point_s(52), 'sort_k_to_even_odd', 'start' ) |
|---|
| 1066 | |
|---|
| 1067 | l = glevel |
|---|
| 1068 | ind_even_odd = even_odd_level(l) |
|---|
| 1069 | |
|---|
| 1070 | !$OMP PARALLEL PRIVATE (i,j,k,ind,tmp) |
|---|
| 1071 | !$OMP DO |
|---|
| 1072 | DO i = nxl_mg(l)-1, nxr_mg(l)+1 |
|---|
| 1073 | DO j = nys_mg(l)-1, nyn_mg(l)+1 |
|---|
| 1074 | |
|---|
| 1075 | ! |
|---|
| 1076 | !-- Sort the data with even k index |
|---|
| 1077 | ind = nzb-1 |
|---|
| 1078 | DO k = nzb, nzt_mg(l), 2 |
|---|
| 1079 | ind = ind + 1 |
|---|
| 1080 | tmp(ind) = p_mg(k,j,i) |
|---|
| 1081 | ENDDO |
|---|
| 1082 | ! |
|---|
| 1083 | !-- Sort the data with odd k index |
|---|
| 1084 | DO k = nzb+1, nzt_mg(l)+1, 2 |
|---|
| 1085 | ind = ind + 1 |
|---|
| 1086 | tmp(ind) = p_mg(k,j,i) |
|---|
| 1087 | ENDDO |
|---|
| 1088 | |
|---|
| 1089 | p_mg(:,j,i) = tmp |
|---|
| 1090 | |
|---|
| 1091 | ENDDO |
|---|
| 1092 | ENDDO |
|---|
| 1093 | !$OMP END PARALLEL |
|---|
| 1094 | |
|---|
| 1095 | CALL cpu_log( log_point_s(52), 'sort_k_to_even_odd', 'stop' ) |
|---|
| 1096 | |
|---|
| 1097 | END SUBROUTINE sort_k_to_even_odd_blocks |
|---|
| 1098 | |
|---|
| 1099 | |
|---|
| 1100 | !------------------------------------------------------------------------------! |
|---|
| 1101 | ! Description: |
|---|
| 1102 | ! ------------ |
|---|
| 1103 | !> Sort k-Dimension from sequential into blocks of even and odd. |
|---|
| 1104 | !> This is required to vectorize the red-black subroutine. |
|---|
| 1105 | !> Version for 1D-REAL arrays |
|---|
| 1106 | !------------------------------------------------------------------------------! |
|---|
| 1107 | SUBROUTINE sort_k_to_even_odd_blocks_1d( f_mg, f_mg_b, glevel ) |
|---|
| 1108 | |
|---|
| 1109 | |
|---|
| 1110 | USE indices, & |
|---|
| 1111 | ONLY: nzb, nzt_mg |
|---|
| 1112 | |
|---|
| 1113 | IMPLICIT NONE |
|---|
| 1114 | |
|---|
| 1115 | INTEGER(iwp), INTENT(IN) :: glevel !< grid level |
|---|
| 1116 | |
|---|
| 1117 | REAL(wp), DIMENSION(nzb+1:nzt_mg(glevel)) :: f_mg !< 1D input array |
|---|
| 1118 | REAL(wp), DIMENSION(nzb:nzt_mg(glevel)+1) :: f_mg_b !< 1D output array |
|---|
| 1119 | |
|---|
| 1120 | ! |
|---|
| 1121 | !-- Local variables |
|---|
| 1122 | INTEGER(iwp) :: ind !< index variable along z |
|---|
| 1123 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 1124 | |
|---|
| 1125 | |
|---|
| 1126 | ind = nzb - 1 |
|---|
| 1127 | ! |
|---|
| 1128 | !-- Sort the data with even k index |
|---|
| 1129 | DO k = nzb, nzt_mg(glevel), 2 |
|---|
| 1130 | ind = ind + 1 |
|---|
| 1131 | IF ( k >= nzb+1 .AND. k <= nzt_mg(glevel) ) THEN |
|---|
| 1132 | f_mg_b(ind) = f_mg(k) |
|---|
| 1133 | ENDIF |
|---|
| 1134 | ENDDO |
|---|
| 1135 | ! |
|---|
| 1136 | !-- Sort the data with odd k index |
|---|
| 1137 | DO k = nzb+1, nzt_mg(glevel)+1, 2 |
|---|
| 1138 | ind = ind + 1 |
|---|
| 1139 | IF( k >= nzb+1 .AND. k <= nzt_mg(glevel) ) THEN |
|---|
| 1140 | f_mg_b(ind) = f_mg(k) |
|---|
| 1141 | ENDIF |
|---|
| 1142 | ENDDO |
|---|
| 1143 | |
|---|
| 1144 | END SUBROUTINE sort_k_to_even_odd_blocks_1d |
|---|
| 1145 | |
|---|
| 1146 | |
|---|
| 1147 | !------------------------------------------------------------------------------! |
|---|
| 1148 | ! Description: |
|---|
| 1149 | ! ------------ |
|---|
| 1150 | !> Sort k-Dimension from sequential into blocks of even and odd. |
|---|
| 1151 | !> This is required to vectorize the red-black subroutine. |
|---|
| 1152 | !> Version for 2D-INTEGER arrays |
|---|
| 1153 | !------------------------------------------------------------------------------! |
|---|
| 1154 | SUBROUTINE sort_k_to_even_odd_blocks_int( i_mg , glevel ) |
|---|
| 1155 | |
|---|
| 1156 | |
|---|
| 1157 | USE indices, & |
|---|
| 1158 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
|---|
| 1159 | |
|---|
| 1160 | IMPLICIT NONE |
|---|
| 1161 | |
|---|
| 1162 | INTEGER(iwp), INTENT(IN) :: glevel !< grid level |
|---|
| 1163 | |
|---|
| 1164 | INTEGER(iwp), DIMENSION(nzb:nzt_mg(glevel)+1, & |
|---|
| 1165 | nys_mg(glevel)-1:nyn_mg(glevel)+1, & |
|---|
| 1166 | nxl_mg(glevel)-1:nxr_mg(glevel)+1) :: & |
|---|
| 1167 | i_mg !< array to be sorted |
|---|
| 1168 | ! |
|---|
| 1169 | !-- Local variables |
|---|
| 1170 | INTEGER(iwp) :: i !< index variabel along x |
|---|
| 1171 | INTEGER(iwp) :: j !< index variable along y |
|---|
| 1172 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 1173 | INTEGER(iwp) :: l !< grid level |
|---|
| 1174 | INTEGER(iwp) :: ind !< index variable along z |
|---|
| 1175 | INTEGER(iwp),DIMENSION(nzb:nzt_mg(glevel)+1) :: tmp !< temporary odd-even sorted array |
|---|
| 1176 | |
|---|
| 1177 | |
|---|
| 1178 | CALL cpu_log( log_point_s(52), 'sort_k_to_even_odd', 'start' ) |
|---|
| 1179 | |
|---|
| 1180 | l = glevel |
|---|
| 1181 | ind_even_odd = even_odd_level(l) |
|---|
| 1182 | |
|---|
| 1183 | DO i = nxl_mg(l)-1, nxr_mg(l)+1 |
|---|
| 1184 | DO j = nys_mg(l)-1, nyn_mg(l)+1 |
|---|
| 1185 | |
|---|
| 1186 | ! |
|---|
| 1187 | !-- Sort the data with even k index |
|---|
| 1188 | ind = nzb-1 |
|---|
| 1189 | DO k = nzb, nzt_mg(l), 2 |
|---|
| 1190 | ind = ind + 1 |
|---|
| 1191 | tmp(ind) = i_mg(k,j,i) |
|---|
| 1192 | ENDDO |
|---|
| 1193 | ! |
|---|
| 1194 | !-- Sort the data with odd k index |
|---|
| 1195 | DO k = nzb+1, nzt_mg(l)+1, 2 |
|---|
| 1196 | ind = ind + 1 |
|---|
| 1197 | tmp(ind) = i_mg(k,j,i) |
|---|
| 1198 | ENDDO |
|---|
| 1199 | |
|---|
| 1200 | i_mg(:,j,i) = tmp |
|---|
| 1201 | |
|---|
| 1202 | ENDDO |
|---|
| 1203 | ENDDO |
|---|
| 1204 | |
|---|
| 1205 | CALL cpu_log( log_point_s(52), 'sort_k_to_even_odd', 'stop' ) |
|---|
| 1206 | |
|---|
| 1207 | END SUBROUTINE sort_k_to_even_odd_blocks_int |
|---|
| 1208 | |
|---|
| 1209 | |
|---|
| 1210 | !------------------------------------------------------------------------------! |
|---|
| 1211 | ! Description: |
|---|
| 1212 | ! ------------ |
|---|
| 1213 | !> Sort k-dimension from blocks of even and odd into sequential |
|---|
| 1214 | !------------------------------------------------------------------------------! |
|---|
| 1215 | SUBROUTINE sort_k_to_sequential( p_mg ) |
|---|
| 1216 | |
|---|
| 1217 | |
|---|
| 1218 | USE control_parameters, & |
|---|
| 1219 | ONLY: grid_level |
|---|
| 1220 | |
|---|
| 1221 | USE indices, & |
|---|
| 1222 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
|---|
| 1223 | |
|---|
| 1224 | IMPLICIT NONE |
|---|
| 1225 | |
|---|
| 1226 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 1227 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1228 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: & |
|---|
| 1229 | p_mg !< array to be sorted |
|---|
| 1230 | ! |
|---|
| 1231 | !-- Local variables |
|---|
| 1232 | INTEGER(iwp) :: i !< index variable along x |
|---|
| 1233 | INTEGER(iwp) :: j !< index variable along y |
|---|
| 1234 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 1235 | INTEGER(iwp) :: l !< grid level |
|---|
| 1236 | INTEGER(iwp) :: ind !< index variable along z |
|---|
| 1237 | |
|---|
| 1238 | REAL(wp),DIMENSION(nzb:nzt_mg(grid_level)+1) :: tmp |
|---|
| 1239 | |
|---|
| 1240 | |
|---|
| 1241 | l = grid_level |
|---|
| 1242 | |
|---|
| 1243 | !$OMP PARALLEL PRIVATE (i,j,k,ind,tmp) |
|---|
| 1244 | !$OMP DO |
|---|
| 1245 | DO i = nxl_mg(l)-1, nxr_mg(l)+1 |
|---|
| 1246 | DO j = nys_mg(l)-1, nyn_mg(l)+1 |
|---|
| 1247 | |
|---|
| 1248 | ind = nzb - 1 |
|---|
| 1249 | tmp = p_mg(:,j,i) |
|---|
| 1250 | DO k = nzb, nzt_mg(l), 2 |
|---|
| 1251 | ind = ind + 1 |
|---|
| 1252 | p_mg(k,j,i) = tmp(ind) |
|---|
| 1253 | ENDDO |
|---|
| 1254 | |
|---|
| 1255 | DO k = nzb+1, nzt_mg(l)+1, 2 |
|---|
| 1256 | ind = ind + 1 |
|---|
| 1257 | p_mg(k,j,i) = tmp(ind) |
|---|
| 1258 | ENDDO |
|---|
| 1259 | ENDDO |
|---|
| 1260 | ENDDO |
|---|
| 1261 | !$OMP END PARALLEL |
|---|
| 1262 | |
|---|
| 1263 | END SUBROUTINE sort_k_to_sequential |
|---|
| 1264 | |
|---|
| 1265 | |
|---|
| 1266 | !------------------------------------------------------------------------------! |
|---|
| 1267 | ! Description: |
|---|
| 1268 | ! ------------ |
|---|
| 1269 | !> Gather subdomain data from all PEs. |
|---|
| 1270 | !------------------------------------------------------------------------------! |
|---|
| 1271 | SUBROUTINE mg_gather( f2, f2_sub ) |
|---|
| 1272 | |
|---|
| 1273 | USE control_parameters, & |
|---|
| 1274 | ONLY: grid_level |
|---|
| 1275 | |
|---|
| 1276 | USE cpulog, & |
|---|
| 1277 | ONLY: cpu_log, log_point_s |
|---|
| 1278 | |
|---|
| 1279 | USE indices, & |
|---|
| 1280 | ONLY: mg_loc_ind, nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
|---|
| 1281 | |
|---|
| 1282 | IMPLICIT NONE |
|---|
| 1283 | |
|---|
| 1284 | INTEGER(iwp) :: i !< |
|---|
| 1285 | INTEGER(iwp) :: il !< |
|---|
| 1286 | INTEGER(iwp) :: ir !< |
|---|
| 1287 | INTEGER(iwp) :: j !< |
|---|
| 1288 | INTEGER(iwp) :: jn !< |
|---|
| 1289 | INTEGER(iwp) :: js !< |
|---|
| 1290 | INTEGER(iwp) :: k !< |
|---|
| 1291 | INTEGER(iwp) :: nwords !< |
|---|
| 1292 | |
|---|
| 1293 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 1294 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1295 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: f2 !< |
|---|
| 1296 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 1297 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1298 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: f2_l !< |
|---|
| 1299 | |
|---|
| 1300 | REAL(wp), DIMENSION(nzb:mg_loc_ind(5,myid)+1, & |
|---|
| 1301 | mg_loc_ind(3,myid)-1:mg_loc_ind(4,myid)+1, & |
|---|
| 1302 | mg_loc_ind(1,myid)-1:mg_loc_ind(2,myid)+1) :: f2_sub !< |
|---|
| 1303 | |
|---|
| 1304 | |
|---|
| 1305 | #if defined( __parallel ) |
|---|
| 1306 | CALL cpu_log( log_point_s(34), 'mg_gather', 'start' ) |
|---|
| 1307 | |
|---|
| 1308 | f2_l = 0.0_wp |
|---|
| 1309 | |
|---|
| 1310 | ! |
|---|
| 1311 | !-- Store the local subdomain array on the total array |
|---|
| 1312 | js = mg_loc_ind(3,myid) |
|---|
| 1313 | IF ( south_border_pe ) js = js - 1 |
|---|
| 1314 | jn = mg_loc_ind(4,myid) |
|---|
| 1315 | IF ( north_border_pe ) jn = jn + 1 |
|---|
| 1316 | il = mg_loc_ind(1,myid) |
|---|
| 1317 | IF ( left_border_pe ) il = il - 1 |
|---|
| 1318 | ir = mg_loc_ind(2,myid) |
|---|
| 1319 | IF ( right_border_pe ) ir = ir + 1 |
|---|
| 1320 | DO i = il, ir |
|---|
| 1321 | DO j = js, jn |
|---|
| 1322 | DO k = nzb, nzt_mg(grid_level)+1 |
|---|
| 1323 | f2_l(k,j,i) = f2_sub(k,j,i) |
|---|
| 1324 | ENDDO |
|---|
| 1325 | ENDDO |
|---|
| 1326 | ENDDO |
|---|
| 1327 | |
|---|
| 1328 | ! |
|---|
| 1329 | !-- Find out the number of array elements of the total array |
|---|
| 1330 | nwords = SIZE( f2 ) |
|---|
| 1331 | |
|---|
| 1332 | ! |
|---|
| 1333 | !-- Gather subdomain data from all PEs |
|---|
| 1334 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
|---|
| 1335 | CALL MPI_ALLREDUCE( f2_l(nzb,nys_mg(grid_level)-1,nxl_mg(grid_level)-1), & |
|---|
| 1336 | f2(nzb,nys_mg(grid_level)-1,nxl_mg(grid_level)-1), & |
|---|
| 1337 | nwords, MPI_REAL, MPI_SUM, comm2d, ierr ) |
|---|
| 1338 | |
|---|
| 1339 | CALL cpu_log( log_point_s(34), 'mg_gather', 'stop' ) |
|---|
| 1340 | #endif |
|---|
| 1341 | |
|---|
| 1342 | END SUBROUTINE mg_gather |
|---|
| 1343 | |
|---|
| 1344 | |
|---|
| 1345 | |
|---|
| 1346 | !------------------------------------------------------------------------------! |
|---|
| 1347 | ! Description: |
|---|
| 1348 | ! ------------ |
|---|
| 1349 | !> @todo It might be possible to improve the speed of this routine by using |
|---|
| 1350 | !> non-blocking communication |
|---|
| 1351 | !------------------------------------------------------------------------------! |
|---|
| 1352 | SUBROUTINE mg_scatter( p2, p2_sub ) |
|---|
| 1353 | |
|---|
| 1354 | USE control_parameters, & |
|---|
| 1355 | ONLY: grid_level |
|---|
| 1356 | |
|---|
| 1357 | USE cpulog, & |
|---|
| 1358 | ONLY: cpu_log, log_point_s |
|---|
| 1359 | |
|---|
| 1360 | USE indices, & |
|---|
| 1361 | ONLY: mg_loc_ind, nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
|---|
| 1362 | |
|---|
| 1363 | IMPLICIT NONE |
|---|
| 1364 | |
|---|
| 1365 | INTEGER(iwp) :: nwords !< |
|---|
| 1366 | |
|---|
| 1367 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level-1)+1, & |
|---|
| 1368 | nys_mg(grid_level-1)-1:nyn_mg(grid_level-1)+1, & |
|---|
| 1369 | nxl_mg(grid_level-1)-1:nxr_mg(grid_level-1)+1) :: p2 !< |
|---|
| 1370 | |
|---|
| 1371 | REAL(wp), DIMENSION(nzb:mg_loc_ind(5,myid)+1, & |
|---|
| 1372 | mg_loc_ind(3,myid)-1:mg_loc_ind(4,myid)+1, & |
|---|
| 1373 | mg_loc_ind(1,myid)-1:mg_loc_ind(2,myid)+1) :: p2_sub !< |
|---|
| 1374 | |
|---|
| 1375 | ! |
|---|
| 1376 | !-- Find out the number of array elements of the subdomain array |
|---|
| 1377 | nwords = SIZE( p2_sub ) |
|---|
| 1378 | |
|---|
| 1379 | #if defined( __parallel ) |
|---|
| 1380 | CALL cpu_log( log_point_s(35), 'mg_scatter', 'start' ) |
|---|
| 1381 | |
|---|
| 1382 | p2_sub = p2(:,mg_loc_ind(3,myid)-1:mg_loc_ind(4,myid)+1, & |
|---|
| 1383 | mg_loc_ind(1,myid)-1:mg_loc_ind(2,myid)+1) |
|---|
| 1384 | |
|---|
| 1385 | CALL cpu_log( log_point_s(35), 'mg_scatter', 'stop' ) |
|---|
| 1386 | #endif |
|---|
| 1387 | |
|---|
| 1388 | END SUBROUTINE mg_scatter |
|---|
| 1389 | |
|---|
| 1390 | |
|---|
| 1391 | !------------------------------------------------------------------------------! |
|---|
| 1392 | ! Description: |
|---|
| 1393 | ! ------------ |
|---|
| 1394 | !> This is where the multigrid technique takes place. V- and W- Cycle are |
|---|
| 1395 | !> implemented and steered by the parameter "gamma". Parameter "nue" determines |
|---|
| 1396 | !> the convergence of the multigrid iterative solution. There are nue times |
|---|
| 1397 | !> RB-GS iterations. It should be set to "1" or "2", considering the time effort |
|---|
| 1398 | !> one would like to invest. Last choice shows a very good converging factor, |
|---|
| 1399 | !> but leads to an increase in computing time. |
|---|
| 1400 | !------------------------------------------------------------------------------! |
|---|
| 1401 | RECURSIVE SUBROUTINE next_mg_level( f_mg, p_mg, p3, r ) |
|---|
| 1402 | |
|---|
| 1403 | USE control_parameters, & |
|---|
| 1404 | ONLY: bc_lr_dirrad, bc_lr_raddir, bc_ns_dirrad, bc_ns_raddir, & |
|---|
| 1405 | child_domain, gamma_mg, grid_level_count, maximum_grid_level,& |
|---|
| 1406 | mg_switch_to_pe0_level, mg_switch_to_pe0, ngsrb |
|---|
| 1407 | |
|---|
| 1408 | USE indices, & |
|---|
| 1409 | ONLY: mg_loc_ind, nxl, nxl_mg, nxr, nxr_mg, nys, nys_mg, nyn, & |
|---|
| 1410 | nyn_mg, nzb, nzt, nzt_mg |
|---|
| 1411 | |
|---|
| 1412 | IMPLICIT NONE |
|---|
| 1413 | |
|---|
| 1414 | INTEGER(iwp) :: i !< index variable along x |
|---|
| 1415 | INTEGER(iwp) :: j !< index variable along y |
|---|
| 1416 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 1417 | INTEGER(iwp) :: nxl_mg_save !< |
|---|
| 1418 | INTEGER(iwp) :: nxr_mg_save !< |
|---|
| 1419 | INTEGER(iwp) :: nyn_mg_save !< |
|---|
| 1420 | INTEGER(iwp) :: nys_mg_save !< |
|---|
| 1421 | INTEGER(iwp) :: nzt_mg_save !< |
|---|
| 1422 | |
|---|
| 1423 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 1424 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1425 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: f_mg !< |
|---|
| 1426 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 1427 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1428 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: p_mg !< |
|---|
| 1429 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 1430 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1431 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: p3 !< |
|---|
| 1432 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 1433 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1434 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: r !< |
|---|
| 1435 | |
|---|
| 1436 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level-1)+1, & |
|---|
| 1437 | nys_mg(grid_level-1)-1:nyn_mg(grid_level-1)+1, & |
|---|
| 1438 | nxl_mg(grid_level-1)-1:nxr_mg(grid_level-1)+1) :: f2 !< |
|---|
| 1439 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level-1)+1, & |
|---|
| 1440 | nys_mg(grid_level-1)-1:nyn_mg(grid_level-1)+1, & |
|---|
| 1441 | nxl_mg(grid_level-1)-1:nxr_mg(grid_level-1)+1) :: p2 !< |
|---|
| 1442 | |
|---|
| 1443 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: f2_sub !< |
|---|
| 1444 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: p2_sub !< |
|---|
| 1445 | |
|---|
| 1446 | ! |
|---|
| 1447 | !-- Restriction to the coarsest grid |
|---|
| 1448 | 10 IF ( grid_level == 1 ) THEN |
|---|
| 1449 | |
|---|
| 1450 | ! |
|---|
| 1451 | !-- Solution on the coarsest grid. Double the number of Gauss-Seidel |
|---|
| 1452 | !-- iterations in order to get a more accurate solution. |
|---|
| 1453 | ngsrb = 2 * ngsrb |
|---|
| 1454 | |
|---|
| 1455 | ind_even_odd = even_odd_level(grid_level) |
|---|
| 1456 | |
|---|
| 1457 | CALL redblack( f_mg, p_mg ) |
|---|
| 1458 | |
|---|
| 1459 | ngsrb = ngsrb / 2 |
|---|
| 1460 | |
|---|
| 1461 | |
|---|
| 1462 | ELSEIF ( grid_level /= 1 ) THEN |
|---|
| 1463 | |
|---|
| 1464 | grid_level_count(grid_level) = grid_level_count(grid_level) + 1 |
|---|
| 1465 | |
|---|
| 1466 | ! |
|---|
| 1467 | !-- Solution on the actual grid level |
|---|
| 1468 | ind_even_odd = even_odd_level(grid_level) |
|---|
| 1469 | |
|---|
| 1470 | CALL redblack( f_mg, p_mg ) |
|---|
| 1471 | |
|---|
| 1472 | ! |
|---|
| 1473 | !-- Determination of the actual residual |
|---|
| 1474 | CALL resid( f_mg, p_mg, r ) |
|---|
| 1475 | |
|---|
| 1476 | !-- Restriction of the residual (finer grid values!) to the next coarser |
|---|
| 1477 | !-- grid. Therefore, the grid level has to be decremented now. nxl..nzt have |
|---|
| 1478 | !-- to be set to the coarse grid values, because these variables are needed |
|---|
| 1479 | !-- for the exchange of ghost points in routine exchange_horiz |
|---|
| 1480 | grid_level = grid_level - 1 |
|---|
| 1481 | |
|---|
| 1482 | nxl = nxl_mg(grid_level) |
|---|
| 1483 | nys = nys_mg(grid_level) |
|---|
| 1484 | nxr = nxr_mg(grid_level) |
|---|
| 1485 | nyn = nyn_mg(grid_level) |
|---|
| 1486 | nzt = nzt_mg(grid_level) |
|---|
| 1487 | |
|---|
| 1488 | IF ( grid_level == mg_switch_to_pe0_level ) THEN |
|---|
| 1489 | |
|---|
| 1490 | ! |
|---|
| 1491 | !-- From this level on, calculations are done on PE0 only. |
|---|
| 1492 | !-- First, carry out restriction on the subdomain. |
|---|
| 1493 | !-- Therefore, indices of the level have to be changed to subdomain |
|---|
| 1494 | !-- values in between (otherwise, the restrict routine would expect |
|---|
| 1495 | !-- the gathered array) |
|---|
| 1496 | |
|---|
| 1497 | nxl_mg_save = nxl_mg(grid_level) |
|---|
| 1498 | nxr_mg_save = nxr_mg(grid_level) |
|---|
| 1499 | nys_mg_save = nys_mg(grid_level) |
|---|
| 1500 | nyn_mg_save = nyn_mg(grid_level) |
|---|
| 1501 | nzt_mg_save = nzt_mg(grid_level) |
|---|
| 1502 | nxl_mg(grid_level) = mg_loc_ind(1,myid) |
|---|
| 1503 | nxr_mg(grid_level) = mg_loc_ind(2,myid) |
|---|
| 1504 | nys_mg(grid_level) = mg_loc_ind(3,myid) |
|---|
| 1505 | nyn_mg(grid_level) = mg_loc_ind(4,myid) |
|---|
| 1506 | nzt_mg(grid_level) = mg_loc_ind(5,myid) |
|---|
| 1507 | nxl = mg_loc_ind(1,myid) |
|---|
| 1508 | nxr = mg_loc_ind(2,myid) |
|---|
| 1509 | nys = mg_loc_ind(3,myid) |
|---|
| 1510 | nyn = mg_loc_ind(4,myid) |
|---|
| 1511 | nzt = mg_loc_ind(5,myid) |
|---|
| 1512 | |
|---|
| 1513 | ALLOCATE( f2_sub(nzb:nzt_mg(grid_level)+1, & |
|---|
| 1514 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1515 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) ) |
|---|
| 1516 | |
|---|
| 1517 | CALL restrict( f2_sub, r ) |
|---|
| 1518 | |
|---|
| 1519 | ! |
|---|
| 1520 | !-- Restore the correct indices of this level |
|---|
| 1521 | nxl_mg(grid_level) = nxl_mg_save |
|---|
| 1522 | nxr_mg(grid_level) = nxr_mg_save |
|---|
| 1523 | nys_mg(grid_level) = nys_mg_save |
|---|
| 1524 | nyn_mg(grid_level) = nyn_mg_save |
|---|
| 1525 | nzt_mg(grid_level) = nzt_mg_save |
|---|
| 1526 | nxl = nxl_mg(grid_level) |
|---|
| 1527 | nxr = nxr_mg(grid_level) |
|---|
| 1528 | nys = nys_mg(grid_level) |
|---|
| 1529 | nyn = nyn_mg(grid_level) |
|---|
| 1530 | nzt = nzt_mg(grid_level) |
|---|
| 1531 | ! |
|---|
| 1532 | !-- Gather all arrays from the subdomains on PE0 |
|---|
| 1533 | CALL mg_gather( f2, f2_sub ) |
|---|
| 1534 | |
|---|
| 1535 | ! |
|---|
| 1536 | !-- Set switch for routine exchange_horiz, that no ghostpoint exchange |
|---|
| 1537 | !-- has to be carried out from now on |
|---|
| 1538 | mg_switch_to_pe0 = .TRUE. |
|---|
| 1539 | |
|---|
| 1540 | ! |
|---|
| 1541 | !-- In case of non-cyclic lateral boundary conditions, both in- and |
|---|
| 1542 | !-- outflow conditions have to be used on all PEs after the switch, |
|---|
| 1543 | !-- because then they have the total domain. |
|---|
| 1544 | IF ( bc_lr_dirrad ) THEN |
|---|
| 1545 | bc_dirichlet_l = .TRUE. |
|---|
| 1546 | bc_dirichlet_r = .FALSE. |
|---|
| 1547 | bc_radiation_l = .FALSE. |
|---|
| 1548 | bc_radiation_r = .TRUE. |
|---|
| 1549 | ELSEIF ( bc_lr_raddir ) THEN |
|---|
| 1550 | bc_dirichlet_l = .FALSE. |
|---|
| 1551 | bc_dirichlet_r = .TRUE. |
|---|
| 1552 | bc_radiation_l = .TRUE. |
|---|
| 1553 | bc_radiation_r = .FALSE. |
|---|
| 1554 | ELSEIF ( child_domain .OR. nesting_offline ) THEN |
|---|
| 1555 | bc_dirichlet_l = .TRUE. |
|---|
| 1556 | bc_dirichlet_r = .TRUE. |
|---|
| 1557 | ENDIF |
|---|
| 1558 | |
|---|
| 1559 | IF ( bc_ns_dirrad ) THEN |
|---|
| 1560 | bc_dirichlet_n = .TRUE. |
|---|
| 1561 | bc_dirichlet_s = .FALSE. |
|---|
| 1562 | bc_radiation_n = .FALSE. |
|---|
| 1563 | bc_radiation_s = .TRUE. |
|---|
| 1564 | ELSEIF ( bc_ns_raddir ) THEN |
|---|
| 1565 | bc_dirichlet_n = .FALSE. |
|---|
| 1566 | bc_dirichlet_s = .TRUE. |
|---|
| 1567 | bc_radiation_n = .TRUE. |
|---|
| 1568 | bc_radiation_s = .FALSE. |
|---|
| 1569 | ELSEIF ( child_domain .OR. nesting_offline) THEN |
|---|
| 1570 | bc_dirichlet_s = .TRUE. |
|---|
| 1571 | bc_dirichlet_n = .TRUE. |
|---|
| 1572 | ENDIF |
|---|
| 1573 | |
|---|
| 1574 | DEALLOCATE( f2_sub ) |
|---|
| 1575 | |
|---|
| 1576 | ELSE |
|---|
| 1577 | |
|---|
| 1578 | CALL restrict( f2, r ) |
|---|
| 1579 | |
|---|
| 1580 | ind_even_odd = even_odd_level(grid_level) ! must be after restrict |
|---|
| 1581 | |
|---|
| 1582 | ENDIF |
|---|
| 1583 | |
|---|
| 1584 | p2 = 0.0_wp |
|---|
| 1585 | |
|---|
| 1586 | ! |
|---|
| 1587 | !-- Repeat the same procedure till the coarsest grid is reached |
|---|
| 1588 | CALL next_mg_level( f2, p2, p3, r ) |
|---|
| 1589 | |
|---|
| 1590 | ENDIF |
|---|
| 1591 | |
|---|
| 1592 | ! |
|---|
| 1593 | !-- Now follows the prolongation |
|---|
| 1594 | IF ( grid_level >= 2 ) THEN |
|---|
| 1595 | |
|---|
| 1596 | ! |
|---|
| 1597 | !-- Prolongation of the new residual. The values are transferred |
|---|
| 1598 | !-- from the coarse to the next finer grid. |
|---|
| 1599 | IF ( grid_level == mg_switch_to_pe0_level+1 ) THEN |
|---|
| 1600 | |
|---|
| 1601 | #if defined( __parallel ) |
|---|
| 1602 | ! |
|---|
| 1603 | !-- At this level, the new residual first has to be scattered from |
|---|
| 1604 | !-- PE0 to the other PEs |
|---|
| 1605 | ALLOCATE( p2_sub(nzb:mg_loc_ind(5,myid)+1, & |
|---|
| 1606 | mg_loc_ind(3,myid)-1:mg_loc_ind(4,myid)+1, & |
|---|
| 1607 | mg_loc_ind(1,myid)-1:mg_loc_ind(2,myid)+1) ) |
|---|
| 1608 | |
|---|
| 1609 | CALL mg_scatter( p2, p2_sub ) |
|---|
| 1610 | |
|---|
| 1611 | ! |
|---|
| 1612 | !-- Therefore, indices of the previous level have to be changed to |
|---|
| 1613 | !-- subdomain values in between (otherwise, the prolong routine would |
|---|
| 1614 | !-- expect the gathered array) |
|---|
| 1615 | nxl_mg_save = nxl_mg(grid_level-1) |
|---|
| 1616 | nxr_mg_save = nxr_mg(grid_level-1) |
|---|
| 1617 | nys_mg_save = nys_mg(grid_level-1) |
|---|
| 1618 | nyn_mg_save = nyn_mg(grid_level-1) |
|---|
| 1619 | nzt_mg_save = nzt_mg(grid_level-1) |
|---|
| 1620 | nxl_mg(grid_level-1) = mg_loc_ind(1,myid) |
|---|
| 1621 | nxr_mg(grid_level-1) = mg_loc_ind(2,myid) |
|---|
| 1622 | nys_mg(grid_level-1) = mg_loc_ind(3,myid) |
|---|
| 1623 | nyn_mg(grid_level-1) = mg_loc_ind(4,myid) |
|---|
| 1624 | nzt_mg(grid_level-1) = mg_loc_ind(5,myid) |
|---|
| 1625 | |
|---|
| 1626 | ! |
|---|
| 1627 | !-- Set switch for routine exchange_horiz, that ghostpoint exchange |
|---|
| 1628 | !-- has to be carried again out from now on |
|---|
| 1629 | mg_switch_to_pe0 = .FALSE. |
|---|
| 1630 | |
|---|
| 1631 | ! |
|---|
| 1632 | !-- For non-cyclic lateral boundary conditions and in case of nesting, |
|---|
| 1633 | !-- restore the in-/outflow conditions. |
|---|
| 1634 | bc_dirichlet_l = .FALSE.; bc_dirichlet_r = .FALSE. |
|---|
| 1635 | bc_dirichlet_n = .FALSE.; bc_dirichlet_s = .FALSE. |
|---|
| 1636 | bc_radiation_l = .FALSE.; bc_radiation_r = .FALSE. |
|---|
| 1637 | bc_radiation_n = .FALSE.; bc_radiation_s = .FALSE. |
|---|
| 1638 | |
|---|
| 1639 | IF ( pleft == MPI_PROC_NULL ) THEN |
|---|
| 1640 | IF ( bc_lr_dirrad .OR. child_domain .OR. nesting_offline ) & |
|---|
| 1641 | THEN |
|---|
| 1642 | bc_dirichlet_l = .TRUE. |
|---|
| 1643 | ELSEIF ( bc_lr_raddir ) THEN |
|---|
| 1644 | bc_radiation_l = .TRUE. |
|---|
| 1645 | ENDIF |
|---|
| 1646 | ENDIF |
|---|
| 1647 | |
|---|
| 1648 | IF ( pright == MPI_PROC_NULL ) THEN |
|---|
| 1649 | IF ( bc_lr_dirrad ) THEN |
|---|
| 1650 | bc_radiation_r = .TRUE. |
|---|
| 1651 | ELSEIF ( bc_lr_raddir .OR. child_domain .OR. & |
|---|
| 1652 | nesting_offline ) THEN |
|---|
| 1653 | bc_dirichlet_r = .TRUE. |
|---|
| 1654 | ENDIF |
|---|
| 1655 | ENDIF |
|---|
| 1656 | |
|---|
| 1657 | IF ( psouth == MPI_PROC_NULL ) THEN |
|---|
| 1658 | IF ( bc_ns_dirrad ) THEN |
|---|
| 1659 | bc_radiation_s = .TRUE. |
|---|
| 1660 | ELSEIF ( bc_ns_raddir .OR. child_domain .OR. & |
|---|
| 1661 | nesting_offline ) THEN |
|---|
| 1662 | bc_dirichlet_s = .TRUE. |
|---|
| 1663 | ENDIF |
|---|
| 1664 | ENDIF |
|---|
| 1665 | |
|---|
| 1666 | IF ( pnorth == MPI_PROC_NULL ) THEN |
|---|
| 1667 | IF ( bc_ns_dirrad .OR. child_domain .OR. nesting_offline ) & |
|---|
| 1668 | THEN |
|---|
| 1669 | bc_dirichlet_n = .TRUE. |
|---|
| 1670 | ELSEIF ( bc_ns_raddir ) THEN |
|---|
| 1671 | bc_radiation_n = .TRUE. |
|---|
| 1672 | ENDIF |
|---|
| 1673 | ENDIF |
|---|
| 1674 | |
|---|
| 1675 | CALL prolong( p2_sub, p3 ) |
|---|
| 1676 | |
|---|
| 1677 | ! |
|---|
| 1678 | !-- Restore the correct indices of the previous level |
|---|
| 1679 | nxl_mg(grid_level-1) = nxl_mg_save |
|---|
| 1680 | nxr_mg(grid_level-1) = nxr_mg_save |
|---|
| 1681 | nys_mg(grid_level-1) = nys_mg_save |
|---|
| 1682 | nyn_mg(grid_level-1) = nyn_mg_save |
|---|
| 1683 | nzt_mg(grid_level-1) = nzt_mg_save |
|---|
| 1684 | |
|---|
| 1685 | DEALLOCATE( p2_sub ) |
|---|
| 1686 | #endif |
|---|
| 1687 | |
|---|
| 1688 | ELSE |
|---|
| 1689 | |
|---|
| 1690 | CALL prolong( p2, p3 ) |
|---|
| 1691 | |
|---|
| 1692 | ENDIF |
|---|
| 1693 | |
|---|
| 1694 | ! |
|---|
| 1695 | !-- Computation of the new pressure correction. Therefore, |
|---|
| 1696 | !-- values from prior grids are added up automatically stage by stage. |
|---|
| 1697 | DO i = nxl_mg(grid_level)-1, nxr_mg(grid_level)+1 |
|---|
| 1698 | DO j = nys_mg(grid_level)-1, nyn_mg(grid_level)+1 |
|---|
| 1699 | DO k = nzb, nzt_mg(grid_level)+1 |
|---|
| 1700 | p_mg(k,j,i) = p_mg(k,j,i) + p3(k,j,i) |
|---|
| 1701 | ENDDO |
|---|
| 1702 | ENDDO |
|---|
| 1703 | ENDDO |
|---|
| 1704 | |
|---|
| 1705 | ! |
|---|
| 1706 | !-- Relaxation of the new solution |
|---|
| 1707 | CALL redblack( f_mg, p_mg ) |
|---|
| 1708 | |
|---|
| 1709 | ENDIF |
|---|
| 1710 | |
|---|
| 1711 | |
|---|
| 1712 | ! |
|---|
| 1713 | !-- The following few lines serve the steering of the multigrid scheme |
|---|
| 1714 | IF ( grid_level == maximum_grid_level ) THEN |
|---|
| 1715 | |
|---|
| 1716 | GOTO 20 |
|---|
| 1717 | |
|---|
| 1718 | ELSEIF ( grid_level /= maximum_grid_level .AND. grid_level /= 1 .AND. & |
|---|
| 1719 | grid_level_count(grid_level) /= gamma_mg ) THEN |
|---|
| 1720 | |
|---|
| 1721 | GOTO 10 |
|---|
| 1722 | |
|---|
| 1723 | ENDIF |
|---|
| 1724 | |
|---|
| 1725 | ! |
|---|
| 1726 | !-- Reset counter for the next call of poismg |
|---|
| 1727 | grid_level_count(grid_level) = 0 |
|---|
| 1728 | |
|---|
| 1729 | ! |
|---|
| 1730 | !-- Continue with the next finer level. nxl..nzt have to be |
|---|
| 1731 | !-- set to the finer grid values, because these variables are needed for the |
|---|
| 1732 | !-- exchange of ghost points in routine exchange_horiz |
|---|
| 1733 | grid_level = grid_level + 1 |
|---|
| 1734 | ind_even_odd = even_odd_level(grid_level) |
|---|
| 1735 | |
|---|
| 1736 | nxl = nxl_mg(grid_level) |
|---|
| 1737 | nxr = nxr_mg(grid_level) |
|---|
| 1738 | nys = nys_mg(grid_level) |
|---|
| 1739 | nyn = nyn_mg(grid_level) |
|---|
| 1740 | nzt = nzt_mg(grid_level) |
|---|
| 1741 | |
|---|
| 1742 | 20 CONTINUE |
|---|
| 1743 | |
|---|
| 1744 | END SUBROUTINE next_mg_level |
|---|
| 1745 | |
|---|
| 1746 | |
|---|
| 1747 | !------------------------------------------------------------------------------! |
|---|
| 1748 | ! Description: |
|---|
| 1749 | ! ------------ |
|---|
| 1750 | !> Initial settings for sorting k-dimension from sequential order (alternate |
|---|
| 1751 | !> even/odd) into blocks of even and odd or vice versa |
|---|
| 1752 | !------------------------------------------------------------------------------! |
|---|
| 1753 | SUBROUTINE init_even_odd_blocks |
|---|
| 1754 | |
|---|
| 1755 | |
|---|
| 1756 | USE arrays_3d, & |
|---|
| 1757 | ONLY: f1_mg, f2_mg, f3_mg |
|---|
| 1758 | |
|---|
| 1759 | USE control_parameters, & |
|---|
| 1760 | ONLY: grid_level, maximum_grid_level |
|---|
| 1761 | |
|---|
| 1762 | USE indices, & |
|---|
| 1763 | ONLY: nzb, nzt, nzt_mg |
|---|
| 1764 | |
|---|
| 1765 | USE indices, & |
|---|
| 1766 | ONLY: nzb, nzt_mg |
|---|
| 1767 | |
|---|
| 1768 | IMPLICIT NONE |
|---|
| 1769 | ! |
|---|
| 1770 | !-- Local variables |
|---|
| 1771 | INTEGER(iwp) :: i !< |
|---|
| 1772 | INTEGER(iwp) :: l !< |
|---|
| 1773 | |
|---|
| 1774 | LOGICAL, SAVE :: lfirst = .TRUE. |
|---|
| 1775 | |
|---|
| 1776 | |
|---|
| 1777 | IF ( .NOT. lfirst ) RETURN |
|---|
| 1778 | |
|---|
| 1779 | ALLOCATE( even_odd_level(maximum_grid_level) ) |
|---|
| 1780 | |
|---|
| 1781 | ALLOCATE( f1_mg_b(nzb:nzt+1,maximum_grid_level), & |
|---|
| 1782 | f2_mg_b(nzb:nzt+1,maximum_grid_level), & |
|---|
| 1783 | f3_mg_b(nzb:nzt+1,maximum_grid_level) ) |
|---|
| 1784 | |
|---|
| 1785 | ! |
|---|
| 1786 | !-- Set border index between the even and odd block |
|---|
| 1787 | DO i = maximum_grid_level, 1, -1 |
|---|
| 1788 | even_odd_level(i) = nzt_mg(i) / 2 |
|---|
| 1789 | ENDDO |
|---|
| 1790 | |
|---|
| 1791 | ! |
|---|
| 1792 | !-- Sort grid coefficients used in red/black scheme and for calculating the |
|---|
| 1793 | !-- residual to block (even/odd) structure |
|---|
| 1794 | DO l = maximum_grid_level, 1 , -1 |
|---|
| 1795 | CALL sort_k_to_even_odd_blocks( f1_mg(nzb+1:nzt_mg(grid_level),l), & |
|---|
| 1796 | f1_mg_b(nzb:nzt_mg(grid_level)+1,l), & |
|---|
| 1797 | l ) |
|---|
| 1798 | CALL sort_k_to_even_odd_blocks( f2_mg(nzb+1:nzt_mg(grid_level),l), & |
|---|
| 1799 | f2_mg_b(nzb:nzt_mg(grid_level)+1,l), & |
|---|
| 1800 | l ) |
|---|
| 1801 | CALL sort_k_to_even_odd_blocks( f3_mg(nzb+1:nzt_mg(grid_level),l), & |
|---|
| 1802 | f3_mg_b(nzb:nzt_mg(grid_level)+1,l), & |
|---|
| 1803 | l ) |
|---|
| 1804 | ENDDO |
|---|
| 1805 | |
|---|
| 1806 | lfirst = .FALSE. |
|---|
| 1807 | |
|---|
| 1808 | END SUBROUTINE init_even_odd_blocks |
|---|
| 1809 | |
|---|
| 1810 | |
|---|
| 1811 | !------------------------------------------------------------------------------! |
|---|
| 1812 | ! Description: |
|---|
| 1813 | ! ------------ |
|---|
| 1814 | !> Special exchange_horiz subroutine for use in redblack. Transfers only |
|---|
| 1815 | !> "red" or "black" data points. |
|---|
| 1816 | !------------------------------------------------------------------------------! |
|---|
| 1817 | SUBROUTINE special_exchange_horiz( p_mg, color ) |
|---|
| 1818 | |
|---|
| 1819 | |
|---|
| 1820 | USE control_parameters, & |
|---|
| 1821 | ONLY: grid_level, mg_switch_to_pe0_level, synchronous_exchange |
|---|
| 1822 | |
|---|
| 1823 | USE indices, & |
|---|
| 1824 | ONLY: nxl, nxl_mg, nxr, nxr_mg, nys, nys_mg, nyn, & |
|---|
| 1825 | nyn_mg, nzb, nzt, nzt_mg |
|---|
| 1826 | |
|---|
| 1827 | IMPLICIT NONE |
|---|
| 1828 | |
|---|
| 1829 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 1830 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1831 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: & |
|---|
| 1832 | p_mg !< treated array |
|---|
| 1833 | |
|---|
| 1834 | INTEGER(iwp), intent(IN) :: color !< flag for grid point type (red or black) |
|---|
| 1835 | ! |
|---|
| 1836 | !-- Local variables |
|---|
| 1837 | INTEGER(iwp) :: i !< index variable along x |
|---|
| 1838 | INTEGER(iwp) :: i1 !< index variable along x on coarse level |
|---|
| 1839 | INTEGER(iwp) :: i2 !< index variable along x on coarse level |
|---|
| 1840 | |
|---|
| 1841 | INTEGER(iwp) :: j !< index variable along y |
|---|
| 1842 | INTEGER(iwp) :: j1 !< index variable along y on coarse level |
|---|
| 1843 | INTEGER(iwp) :: j2 !< index variable along y on coarse level |
|---|
| 1844 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 1845 | INTEGER(iwp) :: l !< short for grid level |
|---|
| 1846 | INTEGER(iwp) :: jys !< index for lower local PE boundary along y |
|---|
| 1847 | INTEGER(iwp) :: jyn !< index for upper local PE boundary along y |
|---|
| 1848 | INTEGER(iwp) :: ixl !< index for lower local PE boundary along x |
|---|
| 1849 | INTEGER(iwp) :: ixr !< index for upper local PE boundary along x |
|---|
| 1850 | |
|---|
| 1851 | LOGICAL :: synchronous_exchange_save !< dummy to reset synchronous_exchange to prescribed value |
|---|
| 1852 | |
|---|
| 1853 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: temp !< temporary array on next coarser grid level |
|---|
| 1854 | |
|---|
| 1855 | #if defined ( __parallel ) |
|---|
| 1856 | synchronous_exchange_save = synchronous_exchange |
|---|
| 1857 | synchronous_exchange = .FALSE. |
|---|
| 1858 | |
|---|
| 1859 | l = grid_level |
|---|
| 1860 | |
|---|
| 1861 | ind_even_odd = even_odd_level(grid_level) |
|---|
| 1862 | |
|---|
| 1863 | ! |
|---|
| 1864 | !-- Restricted transfer only on finer levels with enough data. |
|---|
| 1865 | !-- Restricted transfer is not possible for levels smaller or equal to |
|---|
| 1866 | !-- 'switch to PE0 levels', since array bounds does not fit. Moreover, |
|---|
| 1867 | !-- it is not possible for the coarsest grid level, since the dimensions |
|---|
| 1868 | !-- of temp are not defined. For such cases, normal exchange_horiz is called. |
|---|
| 1869 | IF ( l > 1 .AND. l > mg_switch_to_pe0_level + 1 .AND. & |
|---|
| 1870 | ( ngp_xz(grid_level) >= 900 .OR. ngp_yz(grid_level) >= 900 ) ) THEN |
|---|
| 1871 | |
|---|
| 1872 | jys = nys_mg(grid_level-1) |
|---|
| 1873 | jyn = nyn_mg(grid_level-1) |
|---|
| 1874 | ixl = nxl_mg(grid_level-1) |
|---|
| 1875 | ixr = nxr_mg(grid_level-1) |
|---|
| 1876 | ALLOCATE( temp(nzb:nzt_mg(l-1)+1,jys-1:jyn+1,ixl-1:ixr+1) ) |
|---|
| 1877 | ! |
|---|
| 1878 | !-- Handling the even k Values |
|---|
| 1879 | !-- Collecting data for the north - south exchange |
|---|
| 1880 | !-- Since only every second value has to be transfered, data are stored |
|---|
| 1881 | !-- on the next coarser grid level, because the arrays on that level |
|---|
| 1882 | !-- have just the required size |
|---|
| 1883 | i1 = nxl_mg(grid_level-1) |
|---|
| 1884 | i2 = nxl_mg(grid_level-1) |
|---|
| 1885 | |
|---|
| 1886 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 1887 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 1888 | |
|---|
| 1889 | IF ( j == nys_mg(l) ) THEN |
|---|
| 1890 | !DIR$ IVDEP |
|---|
| 1891 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1892 | temp(k-ind_even_odd,jys,i1) = p_mg(k,j,i) |
|---|
| 1893 | ENDDO |
|---|
| 1894 | i1 = i1 + 1 |
|---|
| 1895 | |
|---|
| 1896 | ENDIF |
|---|
| 1897 | |
|---|
| 1898 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 1899 | !DIR$ IVDEP |
|---|
| 1900 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1901 | temp(k-ind_even_odd,jyn,i2) = p_mg(k,j,i) |
|---|
| 1902 | ENDDO |
|---|
| 1903 | i2 = i2 + 1 |
|---|
| 1904 | |
|---|
| 1905 | ENDIF |
|---|
| 1906 | |
|---|
| 1907 | ENDDO |
|---|
| 1908 | ENDDO |
|---|
| 1909 | |
|---|
| 1910 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 1911 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 1912 | |
|---|
| 1913 | IF ( j == nys_mg(l) ) THEN |
|---|
| 1914 | !DIR$ IVDEP |
|---|
| 1915 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1916 | temp(k-ind_even_odd,jys,i1) = p_mg(k,j,i) |
|---|
| 1917 | ENDDO |
|---|
| 1918 | i1 = i1 + 1 |
|---|
| 1919 | |
|---|
| 1920 | ENDIF |
|---|
| 1921 | |
|---|
| 1922 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 1923 | !DIR$ IVDEP |
|---|
| 1924 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1925 | temp(k-ind_even_odd,jyn,i2) = p_mg(k,j,i) |
|---|
| 1926 | ENDDO |
|---|
| 1927 | i2 = i2 + 1 |
|---|
| 1928 | |
|---|
| 1929 | ENDIF |
|---|
| 1930 | |
|---|
| 1931 | ENDDO |
|---|
| 1932 | ENDDO |
|---|
| 1933 | |
|---|
| 1934 | grid_level = grid_level-1 |
|---|
| 1935 | |
|---|
| 1936 | nxl = nxl_mg(grid_level) |
|---|
| 1937 | nys = nys_mg(grid_level) |
|---|
| 1938 | nxr = nxr_mg(grid_level) |
|---|
| 1939 | nyn = nyn_mg(grid_level) |
|---|
| 1940 | nzt = nzt_mg(grid_level) |
|---|
| 1941 | |
|---|
| 1942 | send_receive = 'ns' |
|---|
| 1943 | CALL exchange_horiz( temp, 1 ) |
|---|
| 1944 | |
|---|
| 1945 | grid_level = grid_level+1 |
|---|
| 1946 | |
|---|
| 1947 | i1 = nxl_mg(grid_level-1) |
|---|
| 1948 | i2 = nxl_mg(grid_level-1) |
|---|
| 1949 | |
|---|
| 1950 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 1951 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 1952 | |
|---|
| 1953 | IF ( j == nys_mg(l) ) THEN |
|---|
| 1954 | !DIR$ IVDEP |
|---|
| 1955 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1956 | p_mg(k,nyn_mg(l)+1,i) = temp(k-ind_even_odd,jyn+1,i1) |
|---|
| 1957 | ENDDO |
|---|
| 1958 | i1 = i1 + 1 |
|---|
| 1959 | |
|---|
| 1960 | ENDIF |
|---|
| 1961 | |
|---|
| 1962 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 1963 | !DIR$ IVDEP |
|---|
| 1964 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1965 | p_mg(k,nys_mg(l)-1,i) = temp(k-ind_even_odd,jys-1,i2) |
|---|
| 1966 | ENDDO |
|---|
| 1967 | i2 = i2 + 1 |
|---|
| 1968 | |
|---|
| 1969 | ENDIF |
|---|
| 1970 | |
|---|
| 1971 | ENDDO |
|---|
| 1972 | ENDDO |
|---|
| 1973 | |
|---|
| 1974 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 1975 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 1976 | |
|---|
| 1977 | IF ( j == nys_mg(l) ) THEN |
|---|
| 1978 | !DIR$ IVDEP |
|---|
| 1979 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1980 | p_mg(k,nyn_mg(l)+1,i) = temp(k-ind_even_odd,jyn+1,i1) |
|---|
| 1981 | ENDDO |
|---|
| 1982 | i1 = i1 + 1 |
|---|
| 1983 | |
|---|
| 1984 | ENDIF |
|---|
| 1985 | |
|---|
| 1986 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 1987 | !DIR$ IVDEP |
|---|
| 1988 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1989 | p_mg(k,nys_mg(l)-1,i) = temp(k-ind_even_odd,jys-1,i2) |
|---|
| 1990 | ENDDO |
|---|
| 1991 | i2 = i2 + 1 |
|---|
| 1992 | |
|---|
| 1993 | ENDIF |
|---|
| 1994 | |
|---|
| 1995 | ENDDO |
|---|
| 1996 | ENDDO |
|---|
| 1997 | |
|---|
| 1998 | ! |
|---|
| 1999 | !-- Collecting data for the left - right exchange |
|---|
| 2000 | !-- Since only every second value has to be transfered, data are stored |
|---|
| 2001 | !-- on the next coarser grid level, because the arrays on that level |
|---|
| 2002 | !-- have just the required size |
|---|
| 2003 | j1 = nys_mg(grid_level-1) |
|---|
| 2004 | j2 = nys_mg(grid_level-1) |
|---|
| 2005 | |
|---|
| 2006 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 2007 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 2008 | |
|---|
| 2009 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2010 | !DIR$ IVDEP |
|---|
| 2011 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2012 | temp(k-ind_even_odd,j1,ixl) = p_mg(k,j,i) |
|---|
| 2013 | ENDDO |
|---|
| 2014 | j1 = j1 + 1 |
|---|
| 2015 | |
|---|
| 2016 | ENDIF |
|---|
| 2017 | |
|---|
| 2018 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2019 | !DIR$ IVDEP |
|---|
| 2020 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2021 | temp(k-ind_even_odd,j2,ixr) = p_mg(k,j,i) |
|---|
| 2022 | ENDDO |
|---|
| 2023 | j2 = j2 + 1 |
|---|
| 2024 | |
|---|
| 2025 | ENDIF |
|---|
| 2026 | |
|---|
| 2027 | ENDDO |
|---|
| 2028 | ENDDO |
|---|
| 2029 | |
|---|
| 2030 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2031 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2032 | |
|---|
| 2033 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2034 | !DIR$ IVDEP |
|---|
| 2035 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2036 | temp(k-ind_even_odd,j1,ixl) = p_mg(k,j,i) |
|---|
| 2037 | ENDDO |
|---|
| 2038 | j1 = j1 + 1 |
|---|
| 2039 | |
|---|
| 2040 | ENDIF |
|---|
| 2041 | |
|---|
| 2042 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2043 | !DIR$ IVDEP |
|---|
| 2044 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2045 | temp(k-ind_even_odd,j2,ixr) = p_mg(k,j,i) |
|---|
| 2046 | ENDDO |
|---|
| 2047 | j2 = j2 + 1 |
|---|
| 2048 | |
|---|
| 2049 | ENDIF |
|---|
| 2050 | |
|---|
| 2051 | ENDDO |
|---|
| 2052 | ENDDO |
|---|
| 2053 | |
|---|
| 2054 | grid_level = grid_level-1 |
|---|
| 2055 | send_receive = 'lr' |
|---|
| 2056 | |
|---|
| 2057 | CALL exchange_horiz( temp, 1 ) |
|---|
| 2058 | |
|---|
| 2059 | grid_level = grid_level+1 |
|---|
| 2060 | |
|---|
| 2061 | j1 = nys_mg(grid_level-1) |
|---|
| 2062 | j2 = nys_mg(grid_level-1) |
|---|
| 2063 | |
|---|
| 2064 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 2065 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 2066 | |
|---|
| 2067 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2068 | !DIR$ IVDEP |
|---|
| 2069 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2070 | p_mg(k,j,nxr_mg(l)+1) = temp(k-ind_even_odd,j1,ixr+1) |
|---|
| 2071 | ENDDO |
|---|
| 2072 | j1 = j1 + 1 |
|---|
| 2073 | |
|---|
| 2074 | ENDIF |
|---|
| 2075 | |
|---|
| 2076 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2077 | !DIR$ IVDEP |
|---|
| 2078 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2079 | p_mg(k,j,nxl_mg(l)-1) = temp(k-ind_even_odd,j2,ixl-1) |
|---|
| 2080 | ENDDO |
|---|
| 2081 | j2 = j2 + 1 |
|---|
| 2082 | |
|---|
| 2083 | ENDIF |
|---|
| 2084 | |
|---|
| 2085 | ENDDO |
|---|
| 2086 | ENDDO |
|---|
| 2087 | |
|---|
| 2088 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2089 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2090 | |
|---|
| 2091 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2092 | !DIR$ IVDEP |
|---|
| 2093 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2094 | p_mg(k,j,nxr_mg(l)+1) = temp(k-ind_even_odd,j1,ixr+1) |
|---|
| 2095 | ENDDO |
|---|
| 2096 | j1 = j1 + 1 |
|---|
| 2097 | |
|---|
| 2098 | ENDIF |
|---|
| 2099 | |
|---|
| 2100 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2101 | !DIR$ IVDEP |
|---|
| 2102 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2103 | p_mg(k,j,nxl_mg(l)-1) = temp(k-ind_even_odd,j2,ixl-1) |
|---|
| 2104 | ENDDO |
|---|
| 2105 | j2 = j2 + 1 |
|---|
| 2106 | |
|---|
| 2107 | ENDIF |
|---|
| 2108 | |
|---|
| 2109 | ENDDO |
|---|
| 2110 | ENDDO |
|---|
| 2111 | |
|---|
| 2112 | ! |
|---|
| 2113 | !-- Now handling the even k values |
|---|
| 2114 | !-- Collecting data for the north - south exchange |
|---|
| 2115 | !-- Since only every second value has to be transfered, data are stored |
|---|
| 2116 | !-- on the next coarser grid level, because the arrays on that level |
|---|
| 2117 | !-- have just the required size |
|---|
| 2118 | i1 = nxl_mg(grid_level-1) |
|---|
| 2119 | i2 = nxl_mg(grid_level-1) |
|---|
| 2120 | |
|---|
| 2121 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 2122 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2123 | |
|---|
| 2124 | IF ( j == nys_mg(l) ) THEN |
|---|
| 2125 | !DIR$ IVDEP |
|---|
| 2126 | DO k = nzb+1, ind_even_odd |
|---|
| 2127 | temp(k,jys,i1) = p_mg(k,j,i) |
|---|
| 2128 | ENDDO |
|---|
| 2129 | i1 = i1 + 1 |
|---|
| 2130 | |
|---|
| 2131 | ENDIF |
|---|
| 2132 | |
|---|
| 2133 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 2134 | !DIR$ IVDEP |
|---|
| 2135 | DO k = nzb+1, ind_even_odd |
|---|
| 2136 | temp(k,jyn,i2) = p_mg(k,j,i) |
|---|
| 2137 | ENDDO |
|---|
| 2138 | i2 = i2 + 1 |
|---|
| 2139 | |
|---|
| 2140 | ENDIF |
|---|
| 2141 | |
|---|
| 2142 | ENDDO |
|---|
| 2143 | ENDDO |
|---|
| 2144 | |
|---|
| 2145 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2146 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 2147 | |
|---|
| 2148 | IF ( j == nys_mg(l) ) THEN |
|---|
| 2149 | !DIR$ IVDEP |
|---|
| 2150 | DO k = nzb+1, ind_even_odd |
|---|
| 2151 | temp(k,jys,i1) = p_mg(k,j,i) |
|---|
| 2152 | ENDDO |
|---|
| 2153 | i1 = i1 + 1 |
|---|
| 2154 | |
|---|
| 2155 | ENDIF |
|---|
| 2156 | |
|---|
| 2157 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 2158 | !DIR$ IVDEP |
|---|
| 2159 | DO k = nzb+1, ind_even_odd |
|---|
| 2160 | temp(k,jyn,i2) = p_mg(k,j,i) |
|---|
| 2161 | ENDDO |
|---|
| 2162 | i2 = i2 + 1 |
|---|
| 2163 | |
|---|
| 2164 | ENDIF |
|---|
| 2165 | |
|---|
| 2166 | ENDDO |
|---|
| 2167 | ENDDO |
|---|
| 2168 | |
|---|
| 2169 | grid_level = grid_level-1 |
|---|
| 2170 | |
|---|
| 2171 | send_receive = 'ns' |
|---|
| 2172 | CALL exchange_horiz( temp, 1 ) |
|---|
| 2173 | |
|---|
| 2174 | grid_level = grid_level+1 |
|---|
| 2175 | |
|---|
| 2176 | i1 = nxl_mg(grid_level-1) |
|---|
| 2177 | i2 = nxl_mg(grid_level-1) |
|---|
| 2178 | |
|---|
| 2179 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 2180 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2181 | |
|---|
| 2182 | IF ( j == nys_mg(l) ) THEN |
|---|
| 2183 | !DIR$ IVDEP |
|---|
| 2184 | DO k = nzb+1, ind_even_odd |
|---|
| 2185 | p_mg(k,nyn_mg(l)+1,i) = temp(k,jyn+1,i1) |
|---|
| 2186 | ENDDO |
|---|
| 2187 | i1 = i1 + 1 |
|---|
| 2188 | |
|---|
| 2189 | ENDIF |
|---|
| 2190 | |
|---|
| 2191 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 2192 | !DIR$ IVDEP |
|---|
| 2193 | DO k = nzb+1, ind_even_odd |
|---|
| 2194 | p_mg(k,nys_mg(l)-1,i) = temp(k,jys-1,i2) |
|---|
| 2195 | ENDDO |
|---|
| 2196 | i2 = i2 + 1 |
|---|
| 2197 | |
|---|
| 2198 | ENDIF |
|---|
| 2199 | |
|---|
| 2200 | ENDDO |
|---|
| 2201 | ENDDO |
|---|
| 2202 | |
|---|
| 2203 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2204 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 2205 | |
|---|
| 2206 | IF ( j == nys_mg(l) ) THEN |
|---|
| 2207 | !DIR$ IVDEP |
|---|
| 2208 | DO k = nzb+1, ind_even_odd |
|---|
| 2209 | p_mg(k,nyn_mg(l)+1,i) = temp(k,jyn+1,i1) |
|---|
| 2210 | ENDDO |
|---|
| 2211 | i1 = i1 + 1 |
|---|
| 2212 | |
|---|
| 2213 | ENDIF |
|---|
| 2214 | |
|---|
| 2215 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 2216 | !DIR$ IVDEP |
|---|
| 2217 | DO k = nzb+1, ind_even_odd |
|---|
| 2218 | p_mg(k,nys_mg(l)-1,i) = temp(k,jys-1,i2) |
|---|
| 2219 | ENDDO |
|---|
| 2220 | i2 = i2 + 1 |
|---|
| 2221 | |
|---|
| 2222 | ENDIF |
|---|
| 2223 | |
|---|
| 2224 | ENDDO |
|---|
| 2225 | ENDDO |
|---|
| 2226 | |
|---|
| 2227 | j1 = nys_mg(grid_level-1) |
|---|
| 2228 | j2 = nys_mg(grid_level-1) |
|---|
| 2229 | |
|---|
| 2230 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 2231 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2232 | |
|---|
| 2233 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2234 | !DIR$ IVDEP |
|---|
| 2235 | DO k = nzb+1, ind_even_odd |
|---|
| 2236 | temp(k,j1,ixl) = p_mg(k,j,i) |
|---|
| 2237 | ENDDO |
|---|
| 2238 | j1 = j1 + 1 |
|---|
| 2239 | |
|---|
| 2240 | ENDIF |
|---|
| 2241 | |
|---|
| 2242 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2243 | !DIR$ IVDEP |
|---|
| 2244 | DO k = nzb+1, ind_even_odd |
|---|
| 2245 | temp(k,j2,ixr) = p_mg(k,j,i) |
|---|
| 2246 | ENDDO |
|---|
| 2247 | j2 = j2 + 1 |
|---|
| 2248 | |
|---|
| 2249 | ENDIF |
|---|
| 2250 | |
|---|
| 2251 | ENDDO |
|---|
| 2252 | ENDDO |
|---|
| 2253 | |
|---|
| 2254 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2255 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 2256 | |
|---|
| 2257 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2258 | !DIR$ IVDEP |
|---|
| 2259 | DO k = nzb+1, ind_even_odd |
|---|
| 2260 | temp(k,j1,ixl) = p_mg(k,j,i) |
|---|
| 2261 | ENDDO |
|---|
| 2262 | j1 = j1 + 1 |
|---|
| 2263 | |
|---|
| 2264 | ENDIF |
|---|
| 2265 | |
|---|
| 2266 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2267 | !DIR$ IVDEP |
|---|
| 2268 | DO k = nzb+1, ind_even_odd |
|---|
| 2269 | temp(k,j2,ixr) = p_mg(k,j,i) |
|---|
| 2270 | ENDDO |
|---|
| 2271 | j2 = j2 + 1 |
|---|
| 2272 | |
|---|
| 2273 | ENDIF |
|---|
| 2274 | |
|---|
| 2275 | ENDDO |
|---|
| 2276 | ENDDO |
|---|
| 2277 | |
|---|
| 2278 | grid_level = grid_level-1 |
|---|
| 2279 | |
|---|
| 2280 | send_receive = 'lr' |
|---|
| 2281 | CALL exchange_horiz( temp, 1 ) |
|---|
| 2282 | |
|---|
| 2283 | grid_level = grid_level+1 |
|---|
| 2284 | |
|---|
| 2285 | nxl = nxl_mg(grid_level) |
|---|
| 2286 | nys = nys_mg(grid_level) |
|---|
| 2287 | nxr = nxr_mg(grid_level) |
|---|
| 2288 | nyn = nyn_mg(grid_level) |
|---|
| 2289 | nzt = nzt_mg(grid_level) |
|---|
| 2290 | |
|---|
| 2291 | j1 = nys_mg(grid_level-1) |
|---|
| 2292 | j2 = nys_mg(grid_level-1) |
|---|
| 2293 | |
|---|
| 2294 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 2295 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2296 | |
|---|
| 2297 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2298 | !DIR$ IVDEP |
|---|
| 2299 | DO k = nzb+1, ind_even_odd |
|---|
| 2300 | p_mg(k,j,nxr_mg(l)+1) = temp(k,j1,ixr+1) |
|---|
| 2301 | ENDDO |
|---|
| 2302 | j1 = j1 + 1 |
|---|
| 2303 | |
|---|
| 2304 | ENDIF |
|---|
| 2305 | |
|---|
| 2306 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2307 | !DIR$ IVDEP |
|---|
| 2308 | DO k = nzb+1, ind_even_odd |
|---|
| 2309 | p_mg(k,j,nxl_mg(l)-1) = temp(k,j2,ixl-1) |
|---|
| 2310 | ENDDO |
|---|
| 2311 | j2 = j2 + 1 |
|---|
| 2312 | |
|---|
| 2313 | ENDIF |
|---|
| 2314 | |
|---|
| 2315 | ENDDO |
|---|
| 2316 | ENDDO |
|---|
| 2317 | |
|---|
| 2318 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2319 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 2320 | |
|---|
| 2321 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2322 | !DIR$ IVDEP |
|---|
| 2323 | DO k = nzb+1, ind_even_odd |
|---|
| 2324 | p_mg(k,j,nxr_mg(l)+1) = temp(k,j1,ixr+1) |
|---|
| 2325 | ENDDO |
|---|
| 2326 | j1 = j1 + 1 |
|---|
| 2327 | |
|---|
| 2328 | ENDIF |
|---|
| 2329 | |
|---|
| 2330 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2331 | !DIR$ IVDEP |
|---|
| 2332 | DO k = nzb+1, ind_even_odd |
|---|
| 2333 | p_mg(k,j,nxl_mg(l)-1) = temp(k,j2,ixl-1) |
|---|
| 2334 | ENDDO |
|---|
| 2335 | j2 = j2 + 1 |
|---|
| 2336 | |
|---|
| 2337 | ENDIF |
|---|
| 2338 | |
|---|
| 2339 | ENDDO |
|---|
| 2340 | ENDDO |
|---|
| 2341 | |
|---|
| 2342 | DEALLOCATE( temp ) |
|---|
| 2343 | |
|---|
| 2344 | ELSE |
|---|
| 2345 | |
|---|
| 2346 | ! |
|---|
| 2347 | !-- Standard horizontal ghost boundary exchange for small coarse grid |
|---|
| 2348 | !-- levels, where the transfer time is latency bound |
|---|
| 2349 | CALL exchange_horiz( p_mg, 1 ) |
|---|
| 2350 | |
|---|
| 2351 | ENDIF |
|---|
| 2352 | |
|---|
| 2353 | ! |
|---|
| 2354 | !-- Reset values to default PALM setup |
|---|
| 2355 | synchronous_exchange = synchronous_exchange_save |
|---|
| 2356 | send_receive = 'al' |
|---|
| 2357 | #else |
|---|
| 2358 | |
|---|
| 2359 | ! |
|---|
| 2360 | !-- Standard horizontal ghost boundary exchange for small coarse grid |
|---|
| 2361 | !-- levels, where the transfer time is latency bound |
|---|
| 2362 | CALL exchange_horiz( p_mg, 1 ) |
|---|
| 2363 | #endif |
|---|
| 2364 | |
|---|
| 2365 | END SUBROUTINE special_exchange_horiz |
|---|
| 2366 | |
|---|
| 2367 | END MODULE poismg_mod |
|---|
