| 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 terms of the GNU General |
|---|
| 6 | ! Public License as published by the Free Software Foundation, either version 3 of the License, or |
|---|
| 7 | ! (at your option) any later version. |
|---|
| 8 | ! |
|---|
| 9 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the |
|---|
| 10 | ! implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
|---|
| 11 | ! Public License for more details. |
|---|
| 12 | ! |
|---|
| 13 | ! You should have received a copy of the GNU General Public License along with PALM. If not, see |
|---|
| 14 | ! <http://www.gnu.org/licenses/>. |
|---|
| 15 | ! |
|---|
| 16 | ! Copyright 1997-2021 Leibniz Universitaet Hannover |
|---|
| 17 | !--------------------------------------------------------------------------------------------------! |
|---|
| 18 | ! |
|---|
| 19 | ! |
|---|
| 20 | ! Current revisions: |
|---|
| 21 | ! ----------------- |
|---|
| 22 | ! |
|---|
| 23 | ! |
|---|
| 24 | ! Former revisions: |
|---|
| 25 | ! ----------------- |
|---|
| 26 | ! $Id: poismg_mod.f90 4832 2021-01-07 07:15:12Z raasch $ |
|---|
| 27 | ! bugfix in redblack algorithm: lower i,j indices need to start alternatively with even or odd |
|---|
| 28 | ! value on the coarsest grid level, if the subdomain has an uneven number of gridpoints along x/y |
|---|
| 29 | ! |
|---|
| 30 | ! 4828 2021-01-05 11:21:41Z Giersch |
|---|
| 31 | ! File re-formatted to follow the PALM coding standard |
|---|
| 32 | ! |
|---|
| 33 | ! |
|---|
| 34 | ! 4457 2020-03-11 14:20:43Z raasch |
|---|
| 35 | ! Use statement for exchange horiz added |
|---|
| 36 | ! |
|---|
| 37 | ! 4432 2020-02-28 07:43:21Z raasch |
|---|
| 38 | ! Bugfix for previous revision (vector directive was changed by mistake) |
|---|
| 39 | ! |
|---|
| 40 | ! 4429 2020-02-27 15:24:30Z raasch |
|---|
| 41 | ! Statement added to avoid compile error due to unused dummy argument |
|---|
| 42 | ! Bugfix: cpp-directives added for serial mode |
|---|
| 43 | ! |
|---|
| 44 | ! 4360 2020-01-07 11:25:50Z suehring |
|---|
| 45 | ! Corrected "Former revisions" section |
|---|
| 46 | ! |
|---|
| 47 | ! 3725 2019-02-07 10:11:02Z raasch |
|---|
| 48 | ! Unused subroutine removed |
|---|
| 49 | ! |
|---|
| 50 | ! 3655 2019-01-07 16:51:22Z knoop |
|---|
| 51 | ! Unnecessary check eliminated |
|---|
| 52 | ! |
|---|
| 53 | ! Following optimisations have been made: |
|---|
| 54 | ! - Vectorisation (for Intel-CPUs) of the red-black algorithm by resorting array elements with even |
|---|
| 55 | ! and odd indices |
|---|
| 56 | ! - Explicit boundary conditions for building walls removed (solver is running through the |
|---|
| 57 | ! buildings) |
|---|
| 58 | ! - Reduced data transfer in case of ghost point exchange, because only "red" or "black" data points |
|---|
| 59 | ! need to be exchanged. This is not applied for coarser grid levels, since for then the transfer |
|---|
| 60 | ! time is latency bound |
|---|
| 61 | ! |
|---|
| 62 | ! |
|---|
| 63 | !--------------------------------------------------------------------------------------------------! |
|---|
| 64 | ! Description: |
|---|
| 65 | ! ------------ |
|---|
| 66 | !> Solves the Poisson equation for the perturbation pressure with a multigrid V- or W-Cycle scheme. |
|---|
| 67 | !> |
|---|
| 68 | !> This multigrid method was originally developed for PALM by Joerg Uhlenbrock, |
|---|
| 69 | !> September 2000 - July 2001. It has been optimised for speed by Klaus Ketelsen in November 2014. |
|---|
| 70 | !> |
|---|
| 71 | !> @attention Loop unrolling and cache optimization in SOR-Red/Black method still does not give the |
|---|
| 72 | ! expected speedup! |
|---|
| 73 | !> |
|---|
| 74 | !> @todo Further work required. |
|---|
| 75 | !--------------------------------------------------------------------------------------------------! |
|---|
| 76 | MODULE poismg_mod |
|---|
| 77 | |
|---|
| 78 | USE control_parameters, & |
|---|
| 79 | ONLY: bc_dirichlet_l, & |
|---|
| 80 | bc_dirichlet_n, & |
|---|
| 81 | bc_dirichlet_r, & |
|---|
| 82 | bc_dirichlet_s, & |
|---|
| 83 | bc_radiation_l, & |
|---|
| 84 | bc_radiation_n, & |
|---|
| 85 | bc_radiation_r, & |
|---|
| 86 | bc_radiation_s, & |
|---|
| 87 | grid_level, & |
|---|
| 88 | nesting_offline |
|---|
| 89 | |
|---|
| 90 | USE cpulog, & |
|---|
| 91 | ONLY: cpu_log, & |
|---|
| 92 | log_point_s |
|---|
| 93 | |
|---|
| 94 | USE exchange_horiz_mod, & |
|---|
| 95 | ONLY: exchange_horiz |
|---|
| 96 | |
|---|
| 97 | USE kinds |
|---|
| 98 | |
|---|
| 99 | USE pegrid |
|---|
| 100 | |
|---|
| 101 | PRIVATE |
|---|
| 102 | |
|---|
| 103 | INTEGER, SAVE :: ind_even_odd !< border index between even and odd k index |
|---|
| 104 | |
|---|
| 105 | INTEGER, DIMENSION(:), SAVE, ALLOCATABLE :: even_odd_level !< stores ind_even_odd for all MG levels |
|---|
| 106 | |
|---|
| 107 | REAL(wp), DIMENSION(:,:), SAVE, ALLOCATABLE :: f1_mg_b, f2_mg_b, f3_mg_b !< blocked version of f1_mg ... |
|---|
| 108 | |
|---|
| 109 | INTERFACE poismg |
|---|
| 110 | MODULE PROCEDURE poismg |
|---|
| 111 | END INTERFACE poismg |
|---|
| 112 | |
|---|
| 113 | INTERFACE sort_k_to_even_odd_blocks |
|---|
| 114 | MODULE PROCEDURE sort_k_to_even_odd_blocks |
|---|
| 115 | ! MODULE PROCEDURE sort_k_to_even_odd_blocks_int |
|---|
| 116 | MODULE PROCEDURE sort_k_to_even_odd_blocks_1d |
|---|
| 117 | END INTERFACE sort_k_to_even_odd_blocks |
|---|
| 118 | |
|---|
| 119 | PUBLIC poismg |
|---|
| 120 | |
|---|
| 121 | CONTAINS |
|---|
| 122 | |
|---|
| 123 | !--------------------------------------------------------------------------------------------------! |
|---|
| 124 | ! Description: |
|---|
| 125 | ! ------------ |
|---|
| 126 | !> Solves the Poisson equation for the perturbation pressure with a multigrid V- or W-Cycle scheme. |
|---|
| 127 | !--------------------------------------------------------------------------------------------------! |
|---|
| 128 | SUBROUTINE poismg( r ) |
|---|
| 129 | |
|---|
| 130 | USE arrays_3d, & |
|---|
| 131 | ONLY: d, & |
|---|
| 132 | p_loc |
|---|
| 133 | |
|---|
| 134 | USE control_parameters, & |
|---|
| 135 | ONLY: bc_lr_cyc, & |
|---|
| 136 | bc_ns_cyc, & |
|---|
| 137 | gathered_size, & |
|---|
| 138 | grid_level, & |
|---|
| 139 | grid_level_count, & |
|---|
| 140 | ibc_p_t, & |
|---|
| 141 | maximum_grid_level, & |
|---|
| 142 | message_string, & |
|---|
| 143 | mgcycles, & |
|---|
| 144 | mg_cycles, & |
|---|
| 145 | mg_switch_to_pe0_level, & |
|---|
| 146 | residual_limit, & |
|---|
| 147 | subdomain_size |
|---|
| 148 | |
|---|
| 149 | USE cpulog, & |
|---|
| 150 | ONLY: cpu_log, & |
|---|
| 151 | log_point_s |
|---|
| 152 | |
|---|
| 153 | USE indices, & |
|---|
| 154 | ONLY: nxl, & |
|---|
| 155 | nxlg, & |
|---|
| 156 | nxl_mg, & |
|---|
| 157 | nxr, & |
|---|
| 158 | nxrg, & |
|---|
| 159 | nxr_mg, & |
|---|
| 160 | nys, & |
|---|
| 161 | nysg, & |
|---|
| 162 | nys_mg, & |
|---|
| 163 | nyn, & |
|---|
| 164 | nyng, & |
|---|
| 165 | nyn_mg, & |
|---|
| 166 | nzb, & |
|---|
| 167 | nzt, & |
|---|
| 168 | nzt_mg |
|---|
| 169 | |
|---|
| 170 | IMPLICIT NONE |
|---|
| 171 | |
|---|
| 172 | REAL(wp) :: maxerror !< |
|---|
| 173 | REAL(wp) :: maximum_mgcycles !< |
|---|
| 174 | REAL(wp) :: residual_norm !< |
|---|
| 175 | |
|---|
| 176 | REAL(wp), DIMENSION(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) :: r !< |
|---|
| 177 | |
|---|
| 178 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: p3 !< |
|---|
| 179 | |
|---|
| 180 | |
|---|
| 181 | CALL cpu_log( log_point_s(29), 'poismg', 'start' ) |
|---|
| 182 | ! |
|---|
| 183 | !-- Initialize arrays and variables used in this subroutine |
|---|
| 184 | |
|---|
| 185 | !-- If the number of grid points of the gathered grid, which is collected on PE0, is larger than the |
|---|
| 186 | !-- number of grid points of a PE, than array p3 will be enlarged. |
|---|
| 187 | IF ( gathered_size > subdomain_size ) THEN |
|---|
| 188 | ALLOCATE( p3(nzb:nzt_mg(mg_switch_to_pe0_level)+1,nys_mg( & |
|---|
| 189 | mg_switch_to_pe0_level)-1:nyn_mg(mg_switch_to_pe0_level)+1, & |
|---|
| 190 | nxl_mg(mg_switch_to_pe0_level)-1:nxr_mg(mg_switch_to_pe0_level)+1) ) |
|---|
| 191 | ELSE |
|---|
| 192 | ALLOCATE ( p3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
|---|
| 193 | ENDIF |
|---|
| 194 | |
|---|
| 195 | p3 = 0.0_wp |
|---|
| 196 | |
|---|
| 197 | |
|---|
| 198 | ! |
|---|
| 199 | !-- Ghost boundaries have to be added to divergence array. |
|---|
| 200 | !-- Exchange routine needs to know the grid level! |
|---|
| 201 | grid_level = maximum_grid_level |
|---|
| 202 | CALL exchange_horiz( d, 1) |
|---|
| 203 | ! |
|---|
| 204 | !-- Set bottom and top boundary conditions |
|---|
| 205 | d(nzb,:,:) = d(nzb+1,:,:) |
|---|
| 206 | IF ( ibc_p_t == 1 ) d(nzt+1,:,: ) = d(nzt,:,:) |
|---|
| 207 | ! |
|---|
| 208 | !-- Set lateral boundary conditions in non-cyclic case |
|---|
| 209 | IF ( .NOT. bc_lr_cyc ) THEN |
|---|
| 210 | IF ( bc_dirichlet_l .OR. bc_radiation_l ) d(:,:,nxl-1) = d(:,:,nxl) |
|---|
| 211 | IF ( bc_dirichlet_r .OR. bc_radiation_r ) d(:,:,nxr+1) = d(:,:,nxr) |
|---|
| 212 | ENDIF |
|---|
| 213 | IF ( .NOT. bc_ns_cyc ) THEN |
|---|
| 214 | IF ( bc_dirichlet_n .OR. bc_radiation_n ) d(:,nyn+1,:) = d(:,nyn,:) |
|---|
| 215 | IF ( bc_dirichlet_s .OR. bc_radiation_s ) d(:,nys-1,:) = d(:,nys,:) |
|---|
| 216 | ENDIF |
|---|
| 217 | ! |
|---|
| 218 | !-- Initiation of the multigrid scheme. Does n cycles until the residual is smaller than the given |
|---|
| 219 | !-- limit. The accuracy of the solution of the poisson equation will increase with the number of |
|---|
| 220 | !-- cycles. If the number of cycles is preset by the user, this number will be carried out |
|---|
| 221 | !-- regardless of the accuracy. |
|---|
| 222 | grid_level_count = 0 |
|---|
| 223 | mgcycles = 0 |
|---|
| 224 | IF ( mg_cycles == -1 ) THEN |
|---|
| 225 | maximum_mgcycles = 0 |
|---|
| 226 | residual_norm = 1.0_wp |
|---|
| 227 | ELSE |
|---|
| 228 | maximum_mgcycles = mg_cycles |
|---|
| 229 | residual_norm = 0.0_wp |
|---|
| 230 | ENDIF |
|---|
| 231 | |
|---|
| 232 | ! |
|---|
| 233 | !-- Initial settings for sorting k-dimension from sequential order (alternate even/odd) into blocks |
|---|
| 234 | !-- of even and odd or vice versa |
|---|
| 235 | CALL init_even_odd_blocks |
|---|
| 236 | |
|---|
| 237 | ! |
|---|
| 238 | !-- Sort input arrays in even/odd blocks along k-dimension |
|---|
| 239 | CALL sort_k_to_even_odd_blocks( d, grid_level ) |
|---|
| 240 | CALL sort_k_to_even_odd_blocks( p_loc, grid_level ) |
|---|
| 241 | |
|---|
| 242 | ! |
|---|
| 243 | !-- The complete multigrid cycles are running in block mode, i.e. over seperate data blocks of even |
|---|
| 244 | !-- and odd indices |
|---|
| 245 | DO WHILE ( residual_norm > residual_limit .OR. mgcycles < maximum_mgcycles ) |
|---|
| 246 | |
|---|
| 247 | CALL next_mg_level( d, p_loc, p3, r) |
|---|
| 248 | |
|---|
| 249 | ! |
|---|
| 250 | !-- Calculate the residual if the user has not preset the number of cycles to be performed |
|---|
| 251 | IF ( maximum_mgcycles == 0 ) THEN |
|---|
| 252 | CALL resid( d, p_loc, r ) |
|---|
| 253 | maxerror = SUM( r(nzb+1:nzt,nys:nyn,nxl:nxr)**2 ) |
|---|
| 254 | |
|---|
| 255 | #if defined( __parallel ) |
|---|
| 256 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
|---|
| 257 | CALL MPI_ALLREDUCE( maxerror, residual_norm, 1, MPI_REAL, MPI_SUM, comm2d, ierr) |
|---|
| 258 | #else |
|---|
| 259 | residual_norm = maxerror |
|---|
| 260 | #endif |
|---|
| 261 | residual_norm = SQRT( residual_norm ) |
|---|
| 262 | ENDIF |
|---|
| 263 | |
|---|
| 264 | mgcycles = mgcycles + 1 |
|---|
| 265 | |
|---|
| 266 | ! |
|---|
| 267 | !-- If the user has not limited the number of cycles, stop the run in case of insufficient |
|---|
| 268 | !-- convergence |
|---|
| 269 | IF ( mgcycles > 1000 .AND. mg_cycles == -1 ) THEN |
|---|
| 270 | message_string = 'no sufficient convergence within 1000 cycles' |
|---|
| 271 | CALL message( 'poismg', 'PA0283', 1, 2, 0, 6, 0 ) |
|---|
| 272 | ENDIF |
|---|
| 273 | |
|---|
| 274 | ENDDO |
|---|
| 275 | |
|---|
| 276 | DEALLOCATE( p3 ) |
|---|
| 277 | ! |
|---|
| 278 | !-- Result has to be sorted back from even/odd blocks to sequential order |
|---|
| 279 | CALL sort_k_to_sequential( p_loc ) |
|---|
| 280 | ! |
|---|
| 281 | !-- Unset the grid level. Variable is used to determine the MPI datatypes for ghost point exchange |
|---|
| 282 | grid_level = 0 |
|---|
| 283 | |
|---|
| 284 | CALL cpu_log( log_point_s(29), 'poismg', 'stop' ) |
|---|
| 285 | |
|---|
| 286 | END SUBROUTINE poismg |
|---|
| 287 | |
|---|
| 288 | |
|---|
| 289 | !--------------------------------------------------------------------------------------------------! |
|---|
| 290 | ! Description: |
|---|
| 291 | ! ------------ |
|---|
| 292 | !> Computes the residual of the perturbation pressure. |
|---|
| 293 | !--------------------------------------------------------------------------------------------------! |
|---|
| 294 | SUBROUTINE resid( f_mg, p_mg, r ) |
|---|
| 295 | |
|---|
| 296 | |
|---|
| 297 | USE arrays_3d, & |
|---|
| 298 | ONLY: rho_air_mg |
|---|
| 299 | |
|---|
| 300 | USE control_parameters, & |
|---|
| 301 | ONLY: bc_lr_cyc, & |
|---|
| 302 | bc_ns_cyc, & |
|---|
| 303 | ibc_p_b, & |
|---|
| 304 | ibc_p_t |
|---|
| 305 | |
|---|
| 306 | USE grid_variables, & |
|---|
| 307 | ONLY: ddx2_mg, & |
|---|
| 308 | ddy2_mg |
|---|
| 309 | |
|---|
| 310 | USE indices, & |
|---|
| 311 | ONLY: nxl_mg, & |
|---|
| 312 | nxr_mg, & |
|---|
| 313 | nys_mg, & |
|---|
| 314 | nyn_mg, & |
|---|
| 315 | nzb, & |
|---|
| 316 | nzt_mg |
|---|
| 317 | |
|---|
| 318 | IMPLICIT NONE |
|---|
| 319 | |
|---|
| 320 | INTEGER(iwp) :: i !< index variable along x |
|---|
| 321 | INTEGER(iwp) :: j !< index variable along y |
|---|
| 322 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 323 | INTEGER(iwp) :: l !< index indicating grid level |
|---|
| 324 | INTEGER(iwp) :: km1 !< index variable along z dimension (k-1) |
|---|
| 325 | INTEGER(iwp) :: kp1 !< index variable along z dimension (k+1) |
|---|
| 326 | |
|---|
| 327 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1,nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 328 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: f_mg !< velocity divergence |
|---|
| 329 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1,nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 330 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: p_mg !< perturbation pressure |
|---|
| 331 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1,nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 332 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: r !< residuum of perturbation pressure |
|---|
| 333 | |
|---|
| 334 | ! |
|---|
| 335 | !-- Calculate the residual |
|---|
| 336 | l = grid_level |
|---|
| 337 | |
|---|
| 338 | CALL cpu_log( log_point_s(53), 'resid', 'start' ) |
|---|
| 339 | !$OMP PARALLEL PRIVATE (i,j,k,km1,kp1) |
|---|
| 340 | !$OMP DO |
|---|
| 341 | DO i = nxl_mg(l), nxr_mg(l) |
|---|
| 342 | DO j = nys_mg(l), nyn_mg(l) |
|---|
| 343 | !DIR$ IVDEP |
|---|
| 344 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 345 | km1 = k-ind_even_odd-1 |
|---|
| 346 | kp1 = k-ind_even_odd |
|---|
| 347 | r(k,j,i) = f_mg(k,j,i) - rho_air_mg(k,l) * ddx2_mg(l) & |
|---|
| 348 | * ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 349 | - rho_air_mg(k,l) * ddy2_mg(l) * ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 350 | - f2_mg_b(k,l) * p_mg(kp1,j,i) - f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 351 | + f1_mg_b(k,l) * p_mg(k,j,i) |
|---|
| 352 | ENDDO |
|---|
| 353 | !DIR$ IVDEP |
|---|
| 354 | DO k = nzb+1, ind_even_odd |
|---|
| 355 | km1 = k+ind_even_odd |
|---|
| 356 | kp1 = k+ind_even_odd+1 |
|---|
| 357 | r(k,j,i) = f_mg(k,j,i) - rho_air_mg(k,l) * ddx2_mg(l) & |
|---|
| 358 | * ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) - rho_air_mg(k,l) * ddy2_mg(l) & |
|---|
| 359 | * ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) - f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 360 | - f3_mg_b(k,l) * p_mg(km1,j,i) + f1_mg_b(k,l) * p_mg(k,j,i) |
|---|
| 361 | ENDDO |
|---|
| 362 | ENDDO |
|---|
| 363 | ENDDO |
|---|
| 364 | !$OMP END PARALLEL |
|---|
| 365 | ! |
|---|
| 366 | !-- Horizontal boundary conditions |
|---|
| 367 | CALL exchange_horiz( r, 1) |
|---|
| 368 | |
|---|
| 369 | IF ( .NOT. bc_lr_cyc ) THEN |
|---|
| 370 | IF ( bc_dirichlet_l .OR. bc_radiation_l ) THEN |
|---|
| 371 | r(:,:,nxl_mg(l)-1) = r(:,:,nxl_mg(l)) |
|---|
| 372 | ENDIF |
|---|
| 373 | IF ( bc_dirichlet_r .OR. bc_radiation_r ) THEN |
|---|
| 374 | r(:,:,nxr_mg(l)+1) = r(:,:,nxr_mg(l)) |
|---|
| 375 | ENDIF |
|---|
| 376 | ENDIF |
|---|
| 377 | |
|---|
| 378 | IF ( .NOT. bc_ns_cyc ) THEN |
|---|
| 379 | IF ( bc_dirichlet_n .OR. bc_radiation_n ) THEN |
|---|
| 380 | r(:,nyn_mg(l)+1,:) = r(:,nyn_mg(l),:) |
|---|
| 381 | ENDIF |
|---|
| 382 | IF ( bc_dirichlet_s .OR. bc_radiation_s ) THEN |
|---|
| 383 | r(:,nys_mg(l)-1,:) = r(:,nys_mg(l),:) |
|---|
| 384 | ENDIF |
|---|
| 385 | ENDIF |
|---|
| 386 | |
|---|
| 387 | ! |
|---|
| 388 | !-- Boundary conditions at bottom and top of the domain. Points may be within buildings, but that |
|---|
| 389 | !-- doesn't matter. |
|---|
| 390 | IF ( ibc_p_b == 1 ) THEN |
|---|
| 391 | ! |
|---|
| 392 | !-- Equivalent to r(nzb,:,: ) = r(nzb+1,:,:) |
|---|
| 393 | r(nzb,:,: ) = r(ind_even_odd+1,:,:) |
|---|
| 394 | ELSE |
|---|
| 395 | r(nzb,:,: ) = 0.0_wp |
|---|
| 396 | ENDIF |
|---|
| 397 | |
|---|
| 398 | IF ( ibc_p_t == 1 ) THEN |
|---|
| 399 | ! |
|---|
| 400 | !-- Equivalent to r(nzt_mg(l)+1,:,: ) = r(nzt_mg(l),:,:) |
|---|
| 401 | r(nzt_mg(l)+1,:,: ) = r(ind_even_odd,:,:) |
|---|
| 402 | ELSE |
|---|
| 403 | r(nzt_mg(l)+1,:,: ) = 0.0_wp |
|---|
| 404 | ENDIF |
|---|
| 405 | |
|---|
| 406 | CALL cpu_log( log_point_s(53), 'resid', 'stop' ) |
|---|
| 407 | |
|---|
| 408 | END SUBROUTINE resid |
|---|
| 409 | |
|---|
| 410 | |
|---|
| 411 | !--------------------------------------------------------------------------------------------------! |
|---|
| 412 | ! Description: |
|---|
| 413 | ! ------------ |
|---|
| 414 | !> Interpolates the residual on the next coarser grid with "full weighting" scheme |
|---|
| 415 | !--------------------------------------------------------------------------------------------------! |
|---|
| 416 | SUBROUTINE restrict( f_mg, r ) |
|---|
| 417 | |
|---|
| 418 | |
|---|
| 419 | USE control_parameters, & |
|---|
| 420 | ONLY: bc_lr_cyc, & |
|---|
| 421 | bc_ns_cyc, & |
|---|
| 422 | ibc_p_b, & |
|---|
| 423 | ibc_p_t |
|---|
| 424 | |
|---|
| 425 | USE indices, & |
|---|
| 426 | ONLY: nxl_mg, & |
|---|
| 427 | nxr_mg, & |
|---|
| 428 | nys_mg, & |
|---|
| 429 | nyn_mg, & |
|---|
| 430 | nzb, & |
|---|
| 431 | nzt_mg |
|---|
| 432 | |
|---|
| 433 | IMPLICIT NONE |
|---|
| 434 | |
|---|
| 435 | INTEGER(iwp) :: i !< index variable along x on finer grid |
|---|
| 436 | INTEGER(iwp) :: ic !< index variable along x on coarser grid |
|---|
| 437 | INTEGER(iwp) :: j !< index variable along y on finer grid |
|---|
| 438 | INTEGER(iwp) :: jc !< index variable along y on coarser grid |
|---|
| 439 | INTEGER(iwp) :: k !< index variable along z on finer grid |
|---|
| 440 | INTEGER(iwp) :: kc !< index variable along z on coarser grid |
|---|
| 441 | INTEGER(iwp) :: l !< index indicating finer grid level |
|---|
| 442 | INTEGER(iwp) :: km1 !< index variable along z dimension (k-1 on finer level) |
|---|
| 443 | INTEGER(iwp) :: kp1 !< index variable along z dimension (k+1 on finer level) |
|---|
| 444 | |
|---|
| 445 | |
|---|
| 446 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1,nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 447 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: f_mg !< Residual on coarser grid level |
|---|
| 448 | |
|---|
| 449 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level+1)+1,nys_mg(grid_level+1)-1:nyn_mg(grid_level+1)+1, & |
|---|
| 450 | nxl_mg(grid_level+1)-1:nxr_mg(grid_level+1)+1) :: r !< Residual on finer grid level |
|---|
| 451 | |
|---|
| 452 | ! |
|---|
| 453 | !-- Interpolate the residual |
|---|
| 454 | l = grid_level |
|---|
| 455 | |
|---|
| 456 | CALL cpu_log( log_point_s(54), 'restrict', 'start' ) |
|---|
| 457 | ! |
|---|
| 458 | !-- No wall treatment |
|---|
| 459 | !$OMP PARALLEL PRIVATE (i,j,k,ic,jc,kc,km1,kp1) |
|---|
| 460 | !$OMP DO SCHEDULE( STATIC ) |
|---|
| 461 | DO ic = nxl_mg(l), nxr_mg(l) |
|---|
| 462 | i = 2 * ic |
|---|
| 463 | DO jc = nys_mg(l), nyn_mg(l) |
|---|
| 464 | ! |
|---|
| 465 | !-- Calculation for the first point along k |
|---|
| 466 | j = 2 * jc |
|---|
| 467 | ! |
|---|
| 468 | !-- Calculation for the other points along k |
|---|
| 469 | !DIR$ IVDEP |
|---|
| 470 | DO k = ind_even_odd+1, nzt_mg(l+1) ! Fine grid at this point |
|---|
| 471 | km1 = k-ind_even_odd-1 |
|---|
| 472 | kp1 = k-ind_even_odd |
|---|
| 473 | kc = k-ind_even_odd ! Coarse grid index |
|---|
| 474 | |
|---|
| 475 | f_mg(kc,jc,ic) = 1.0_wp / 64.0_wp & |
|---|
| 476 | * ( 8.0_wp * r(k,j,i) + 4.0_wp * ( r(k,j,i-1) + r(k,j,i+1) & |
|---|
| 477 | + r(k,j+1,i) + r(k,j-1,i) ) & |
|---|
| 478 | + 2.0_wp * ( r(k,j-1,i-1) + r(k,j+1,i-1) & |
|---|
| 479 | + r(k,j-1,i+1) + r(k,j+1,i+1) ) & |
|---|
| 480 | + 4.0_wp * r(km1,j,i) & |
|---|
| 481 | + 2.0_wp * ( r(km1,j,i-1) + r(km1,j,i+1) & |
|---|
| 482 | + r(km1,j+1,i) + r(km1,j-1,i) ) & |
|---|
| 483 | + ( r(km1,j-1,i-1) + r(km1,j+1,i-1) & |
|---|
| 484 | + r(km1,j-1,i+1) + r(km1,j+1,i+1) ) & |
|---|
| 485 | + 4.0_wp * r(kp1,j,i) & |
|---|
| 486 | + 2.0_wp * ( r(kp1,j,i-1) + r(kp1,j,i+1) & |
|---|
| 487 | + r(kp1,j+1,i) + r(kp1,j-1,i) ) & |
|---|
| 488 | + ( r(kp1,j-1,i-1) + r(kp1,j+1,i-1) & |
|---|
| 489 | + r(kp1,j-1,i+1) + r(kp1,j+1,i+1) ) & |
|---|
| 490 | ) |
|---|
| 491 | ENDDO |
|---|
| 492 | ENDDO |
|---|
| 493 | ENDDO |
|---|
| 494 | !$OMP ENDDO |
|---|
| 495 | !$OMP END PARALLEL |
|---|
| 496 | |
|---|
| 497 | ! |
|---|
| 498 | !-- Ghost point exchange |
|---|
| 499 | CALL exchange_horiz( f_mg, 1) |
|---|
| 500 | ! |
|---|
| 501 | !-- Horizontal boundary conditions |
|---|
| 502 | IF ( .NOT. bc_lr_cyc ) THEN |
|---|
| 503 | IF ( bc_dirichlet_l .OR. bc_radiation_l ) THEN |
|---|
| 504 | f_mg(:,:,nxl_mg(l)-1) = f_mg(:,:,nxl_mg(l)) |
|---|
| 505 | ENDIF |
|---|
| 506 | IF ( bc_dirichlet_r .OR. bc_radiation_r ) THEN |
|---|
| 507 | f_mg(:,:,nxr_mg(l)+1) = f_mg(:,:,nxr_mg(l)) |
|---|
| 508 | ENDIF |
|---|
| 509 | ENDIF |
|---|
| 510 | |
|---|
| 511 | IF ( .NOT. bc_ns_cyc ) THEN |
|---|
| 512 | IF ( bc_dirichlet_n .OR. bc_radiation_n ) THEN |
|---|
| 513 | f_mg(:,nyn_mg(l)+1,:) = f_mg(:,nyn_mg(l),:) |
|---|
| 514 | ENDIF |
|---|
| 515 | IF ( bc_dirichlet_s .OR. bc_radiation_s ) THEN |
|---|
| 516 | f_mg(:,nys_mg(l)-1,:) = f_mg(:,nys_mg(l),:) |
|---|
| 517 | ENDIF |
|---|
| 518 | ENDIF |
|---|
| 519 | |
|---|
| 520 | ! |
|---|
| 521 | !-- Boundary conditions at bottom and top of the domain. These points are not handled by the above |
|---|
| 522 | !-- loop. Points may be within buildings, but that doesn't matter. Remark: f_mg is ordered |
|---|
| 523 | !-- sequentielly after interpolation on coarse grid (is ordered in odd-even blocks further below). |
|---|
| 524 | IF ( ibc_p_b == 1 ) THEN |
|---|
| 525 | f_mg(nzb,:,: ) = f_mg(nzb+1,:,:) |
|---|
| 526 | ELSE |
|---|
| 527 | f_mg(nzb,:,: ) = 0.0_wp |
|---|
| 528 | ENDIF |
|---|
| 529 | |
|---|
| 530 | IF ( ibc_p_t == 1 ) THEN |
|---|
| 531 | f_mg(nzt_mg(l)+1,:,: ) = f_mg(nzt_mg(l),:,:) |
|---|
| 532 | ELSE |
|---|
| 533 | f_mg(nzt_mg(l)+1,:,: ) = 0.0_wp |
|---|
| 534 | ENDIF |
|---|
| 535 | |
|---|
| 536 | CALL cpu_log( log_point_s(54), 'restrict', 'stop' ) |
|---|
| 537 | ! |
|---|
| 538 | !-- Since residual is in sequential order after interpolation, an additional sorting in odd-even |
|---|
| 539 | !-- blocks along z dimension is required at this point. |
|---|
| 540 | CALL sort_k_to_even_odd_blocks( f_mg , l) |
|---|
| 541 | |
|---|
| 542 | END SUBROUTINE restrict |
|---|
| 543 | |
|---|
| 544 | |
|---|
| 545 | !--------------------------------------------------------------------------------------------------! |
|---|
| 546 | ! Description: |
|---|
| 547 | ! ------------ |
|---|
| 548 | !> Interpolates the correction of the perturbation pressure to the next finer grid. |
|---|
| 549 | !--------------------------------------------------------------------------------------------------! |
|---|
| 550 | SUBROUTINE prolong( p, temp ) |
|---|
| 551 | |
|---|
| 552 | |
|---|
| 553 | USE control_parameters, & |
|---|
| 554 | ONLY: bc_lr_cyc, & |
|---|
| 555 | bc_ns_cyc, & |
|---|
| 556 | ibc_p_b, & |
|---|
| 557 | ibc_p_t |
|---|
| 558 | USE indices, & |
|---|
| 559 | ONLY: nxl_mg, & |
|---|
| 560 | nxr_mg, & |
|---|
| 561 | nys_mg, & |
|---|
| 562 | nyn_mg, & |
|---|
| 563 | nzb, & |
|---|
| 564 | nzt_mg |
|---|
| 565 | |
|---|
| 566 | IMPLICIT NONE |
|---|
| 567 | |
|---|
| 568 | INTEGER(iwp) :: i !< index variable along x on coarser grid level |
|---|
| 569 | INTEGER(iwp) :: j !< index variable along y on coarser grid level |
|---|
| 570 | INTEGER(iwp) :: k !< index variable along z on coarser grid level |
|---|
| 571 | INTEGER(iwp) :: l !< index indicating finer grid level |
|---|
| 572 | INTEGER(iwp) :: kp1 !< index variable along z |
|---|
| 573 | INTEGER(iwp) :: ke !< index for prolog even |
|---|
| 574 | INTEGER(iwp) :: ko !< index for prolog odd |
|---|
| 575 | |
|---|
| 576 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level-1)+1,nys_mg(grid_level-1)-1:nyn_mg(grid_level-1)+1, & |
|---|
| 577 | nxl_mg(grid_level-1)-1:nxr_mg(grid_level-1)+1 ) :: p !< perturbation pressure on coarser grid level |
|---|
| 578 | |
|---|
| 579 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1,nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 580 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: temp !< perturbation pressure on finer grid level |
|---|
| 581 | |
|---|
| 582 | |
|---|
| 583 | CALL cpu_log( log_point_s(55), 'prolong', 'start' ) |
|---|
| 584 | |
|---|
| 585 | ! |
|---|
| 586 | !-- First, store elements of the coarser grid on the next finer grid |
|---|
| 587 | l = grid_level |
|---|
| 588 | ind_even_odd = even_odd_level(grid_level-1) |
|---|
| 589 | |
|---|
| 590 | !$OMP PARALLEL PRIVATE (i,j,k,kp1,ke,ko) |
|---|
| 591 | !$OMP DO |
|---|
| 592 | DO i = nxl_mg(l-1), nxr_mg(l-1) |
|---|
| 593 | DO j = nys_mg(l-1), nyn_mg(l-1) |
|---|
| 594 | |
|---|
| 595 | !DIR$ IVDEP |
|---|
| 596 | DO k = ind_even_odd+1, nzt_mg(l-1) |
|---|
| 597 | kp1 = k - ind_even_odd |
|---|
| 598 | ke = 2 * ( k-ind_even_odd - 1 ) + 1 |
|---|
| 599 | ko = 2 * k - 1 |
|---|
| 600 | ! |
|---|
| 601 | !-- Points of the coarse grid are directly stored on the next finer grid |
|---|
| 602 | temp(ko,2*j,2*i) = p(k,j,i) |
|---|
| 603 | ! |
|---|
| 604 | !-- Points between two coarse-grid points |
|---|
| 605 | temp(ko,2*j,2*i+1) = 0.5_wp * ( p(k,j,i) + p(k,j,i+1) ) |
|---|
| 606 | temp(ko,2*j+1,2*i) = 0.5_wp * ( p(k,j,i) + p(k,j+1,i) ) |
|---|
| 607 | temp(ke,2*j,2*i) = 0.5_wp * ( p(k,j,i) + p(kp1,j,i) ) |
|---|
| 608 | ! |
|---|
| 609 | !-- Points in the center of the planes stretched by four points of the coarse grid cube |
|---|
| 610 | temp(ko,2*j+1,2*i+1) = 0.25_wp * ( p(k,j,i) + p(k,j,i+1) + & |
|---|
| 611 | p(k,j+1,i) + p(k,j+1,i+1) ) |
|---|
| 612 | temp(ke,2*j,2*i+1) = 0.25_wp * ( p(k,j,i) + p(k,j,i+1) + & |
|---|
| 613 | p(kp1,j,i) + p(kp1,j,i+1) ) |
|---|
| 614 | temp(ke,2*j+1,2*i) = 0.25_wp * ( p(k,j,i) + p(k,j+1,i) + & |
|---|
| 615 | p(kp1,j,i) + p(kp1,j+1,i) ) |
|---|
| 616 | ! |
|---|
| 617 | !-- Points in the middle of coarse grid cube |
|---|
| 618 | temp(ke,2*j+1,2*i+1) = 0.125_wp * ( p(k,j,i) + p(k,j,i+1) + p(k,j+1,i) & |
|---|
| 619 | + p(k,j+1,i+1) + p(kp1,j,i) + p(kp1,j,i+1) & |
|---|
| 620 | + p(kp1,j+1,i) + p(kp1,j+1,i+1) ) |
|---|
| 621 | |
|---|
| 622 | ENDDO |
|---|
| 623 | |
|---|
| 624 | !DIR$ IVDEP |
|---|
| 625 | DO k = nzb+1, ind_even_odd |
|---|
| 626 | kp1 = k + ind_even_odd + 1 |
|---|
| 627 | ke = 2 * k |
|---|
| 628 | ko = 2 * ( k + ind_even_odd ) |
|---|
| 629 | ! |
|---|
| 630 | !-- Points of the coarse grid are directly stored on the next finer grid |
|---|
| 631 | temp(ko,2*j,2*i) = p(k,j,i) |
|---|
| 632 | ! |
|---|
| 633 | !-- Points between two coarse-grid points |
|---|
| 634 | temp(ko,2*j,2*i+1) = 0.5_wp * ( p(k,j,i) + p(k,j,i+1) ) |
|---|
| 635 | temp(ko,2*j+1,2*i) = 0.5_wp * ( p(k,j,i) + p(k,j+1,i) ) |
|---|
| 636 | temp(ke,2*j,2*i) = 0.5_wp * ( p(k,j,i) + p(kp1,j,i) ) |
|---|
| 637 | ! |
|---|
| 638 | !-- Points in the center of the planes stretched by four points |
|---|
| 639 | !-- of the coarse grid cube |
|---|
| 640 | temp(ko,2*j+1,2*i+1) = 0.25_wp * ( p(k,j,i) + p(k,j,i+1) + & |
|---|
| 641 | p(k,j+1,i) + p(k,j+1,i+1) ) |
|---|
| 642 | temp(ke,2*j,2*i+1) = 0.25_wp * ( p(k,j,i) + p(k,j,i+1) + & |
|---|
| 643 | p(kp1,j,i) + p(kp1,j,i+1) ) |
|---|
| 644 | temp(ke,2*j+1,2*i) = 0.25_wp * ( p(k,j,i) + p(k,j+1,i) + & |
|---|
| 645 | p(kp1,j,i) + p(kp1,j+1,i) ) |
|---|
| 646 | ! |
|---|
| 647 | !-- Points in the middle of coarse grid cube |
|---|
| 648 | temp(ke,2*j+1,2*i+1) = 0.125_wp * ( p(k,j,i) + p(k,j,i+1) + p(k,j+1,i) & |
|---|
| 649 | + p(k,j+1,i+1) + p(kp1,j,i) + p(kp1,j,i+1) & |
|---|
| 650 | + p(kp1,j+1,i) + p(kp1,j+1,i+1) ) |
|---|
| 651 | |
|---|
| 652 | ENDDO |
|---|
| 653 | |
|---|
| 654 | ENDDO |
|---|
| 655 | ENDDO |
|---|
| 656 | !$OMP END PARALLEL |
|---|
| 657 | |
|---|
| 658 | ind_even_odd = even_odd_level(grid_level) |
|---|
| 659 | ! |
|---|
| 660 | !-- Horizontal boundary conditions |
|---|
| 661 | CALL exchange_horiz( temp, 1) |
|---|
| 662 | |
|---|
| 663 | IF ( .NOT. bc_lr_cyc ) THEN |
|---|
| 664 | IF ( bc_dirichlet_l .OR. bc_radiation_l ) THEN |
|---|
| 665 | temp(:,:,nxl_mg(l)-1) = temp(:,:,nxl_mg(l)) |
|---|
| 666 | ENDIF |
|---|
| 667 | IF ( bc_dirichlet_r .OR. bc_radiation_r ) THEN |
|---|
| 668 | temp(:,:,nxr_mg(l)+1) = temp(:,:,nxr_mg(l)) |
|---|
| 669 | ENDIF |
|---|
| 670 | ENDIF |
|---|
| 671 | |
|---|
| 672 | IF ( .NOT. bc_ns_cyc ) THEN |
|---|
| 673 | IF ( bc_dirichlet_n .OR. bc_radiation_n ) THEN |
|---|
| 674 | temp(:,nyn_mg(l)+1,:) = temp(:,nyn_mg(l),:) |
|---|
| 675 | ENDIF |
|---|
| 676 | IF ( bc_dirichlet_s .OR. bc_radiation_s ) THEN |
|---|
| 677 | temp(:,nys_mg(l)-1,:) = temp(:,nys_mg(l),:) |
|---|
| 678 | ENDIF |
|---|
| 679 | ENDIF |
|---|
| 680 | |
|---|
| 681 | ! |
|---|
| 682 | !-- Bottom and top boundary conditions |
|---|
| 683 | IF ( ibc_p_b == 1 ) THEN |
|---|
| 684 | ! |
|---|
| 685 | !-- Equivalent to temp(nzb,:,: ) = temp(nzb+1,:,:) |
|---|
| 686 | temp(nzb,:,: ) = temp(ind_even_odd+1,:,:) |
|---|
| 687 | ELSE |
|---|
| 688 | temp(nzb,:,: ) = 0.0_wp |
|---|
| 689 | ENDIF |
|---|
| 690 | |
|---|
| 691 | IF ( ibc_p_t == 1 ) THEN |
|---|
| 692 | ! |
|---|
| 693 | !-- Equivalent to temp(nzt_mg(l)+1,:,: ) = temp(nzt_mg(l),:,:) |
|---|
| 694 | temp(nzt_mg(l)+1,:,: ) = temp(ind_even_odd,:,:) |
|---|
| 695 | ELSE |
|---|
| 696 | temp(nzt_mg(l)+1,:,: ) = 0.0_wp |
|---|
| 697 | ENDIF |
|---|
| 698 | |
|---|
| 699 | CALL cpu_log( log_point_s(55), 'prolong', 'stop' ) |
|---|
| 700 | |
|---|
| 701 | END SUBROUTINE prolong |
|---|
| 702 | |
|---|
| 703 | |
|---|
| 704 | !--------------------------------------------------------------------------------------------------! |
|---|
| 705 | ! Description: |
|---|
| 706 | ! ------------ |
|---|
| 707 | !> Relaxation method for the multigrid scheme. A Gauss-Seidel iteration with 3D-Red-Black |
|---|
| 708 | !> decomposition (GS-RB) is used. |
|---|
| 709 | !--------------------------------------------------------------------------------------------------! |
|---|
| 710 | SUBROUTINE redblack( f_mg, p_mg ) |
|---|
| 711 | |
|---|
| 712 | |
|---|
| 713 | USE arrays_3d, & |
|---|
| 714 | ONLY: rho_air_mg |
|---|
| 715 | |
|---|
| 716 | USE control_parameters, & |
|---|
| 717 | ONLY: bc_lr_cyc, & |
|---|
| 718 | bc_ns_cyc, & |
|---|
| 719 | ibc_p_b, & |
|---|
| 720 | ibc_p_t, & |
|---|
| 721 | ngsrb |
|---|
| 722 | |
|---|
| 723 | USE grid_variables, & |
|---|
| 724 | ONLY: ddx2_mg, & |
|---|
| 725 | ddy2_mg |
|---|
| 726 | |
|---|
| 727 | USE indices, & |
|---|
| 728 | ONLY: nxl_mg, & |
|---|
| 729 | nxr_mg, & |
|---|
| 730 | nys_mg, & |
|---|
| 731 | nyn_mg, & |
|---|
| 732 | nzb, & |
|---|
| 733 | nzt_mg |
|---|
| 734 | |
|---|
| 735 | IMPLICIT NONE |
|---|
| 736 | |
|---|
| 737 | INTEGER(iwp) :: color !< grid point color, either red or black |
|---|
| 738 | INTEGER(iwp) :: i !< index variable along x |
|---|
| 739 | INTEGER(iwp) :: ic !< index variable along x |
|---|
| 740 | INTEGER(iwp) :: j !< index variable along y |
|---|
| 741 | INTEGER(iwp) :: jc !< index variable along y |
|---|
| 742 | INTEGER(iwp) :: jj !< index variable along y |
|---|
| 743 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 744 | INTEGER(iwp) :: km1 !< index variable (k-1) |
|---|
| 745 | INTEGER(iwp) :: kp1 !< index variable (k+1) |
|---|
| 746 | INTEGER(iwp) :: l !< grid level |
|---|
| 747 | INTEGER(iwp) :: n !< loop variable GauÃ-Seidel iterations |
|---|
| 748 | INTEGER(iwp) :: save_nxl_mg !< to save nxl_mg on coarsest level 1 |
|---|
| 749 | INTEGER(iwp) :: save_nys_mg !< to save nys_mg on coarsest level 1 |
|---|
| 750 | |
|---|
| 751 | |
|---|
| 752 | LOGICAL :: adjust_lower_i_index !< adjust lower limit of i loop in case of odd number of grid points |
|---|
| 753 | LOGICAL :: adjust_lower_j_index !< adjust lower limit of j loop in case of odd number of grid points |
|---|
| 754 | LOGICAL :: unroll !< flag indicating whether loop unrolling is possible |
|---|
| 755 | |
|---|
| 756 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1,nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 757 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: f_mg !< residual of perturbation pressure |
|---|
| 758 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1,nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 759 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: p_mg !< perturbation pressure |
|---|
| 760 | |
|---|
| 761 | |
|---|
| 762 | l = grid_level |
|---|
| 763 | |
|---|
| 764 | unroll = ( MOD( nyn_mg(l)-nys_mg(l)+1, 4 ) == 0 .AND. MOD( nxr_mg(l)-nxl_mg(l)+1, 2 ) == 0 ) |
|---|
| 765 | |
|---|
| 766 | ! |
|---|
| 767 | !-- The red/black decomposition requires that on the lower i,j indices need to start alternatively with an |
|---|
| 768 | !-- even or odd value on the coarsest grid level, depending on the core-id, and if the subdomain has an |
|---|
| 769 | !-- uneven number of gridpoints along x/y. Set the respective steering switches here. |
|---|
| 770 | IF ( l == 1 .AND. MOD( myidx, 2 ) /= 0 .AND. MOD( nxl_mg(l) - nxr_mg(l), 2 ) == 0 ) THEN |
|---|
| 771 | adjust_lower_i_index = .TRUE. |
|---|
| 772 | save_nxl_mg = nxl_mg(1) |
|---|
| 773 | ELSE |
|---|
| 774 | adjust_lower_i_index = .FALSE. |
|---|
| 775 | ENDIF |
|---|
| 776 | IF ( l == 1 .AND. MOD( myidy, 2 ) /= 0 .AND. MOD( nyn_mg(l) - nys_mg(l), 2 ) == 0 ) THEN |
|---|
| 777 | adjust_lower_j_index = .TRUE. |
|---|
| 778 | save_nys_mg = nys_mg(l) |
|---|
| 779 | ELSE |
|---|
| 780 | adjust_lower_j_index = .FALSE. |
|---|
| 781 | ENDIF |
|---|
| 782 | |
|---|
| 783 | |
|---|
| 784 | DO n = 1, ngsrb |
|---|
| 785 | |
|---|
| 786 | DO color = 1, 2 |
|---|
| 787 | |
|---|
| 788 | IF ( .NOT. unroll ) THEN |
|---|
| 789 | |
|---|
| 790 | CALL cpu_log( log_point_s(36), 'redblack_no_unroll_f', 'start' ) |
|---|
| 791 | |
|---|
| 792 | IF ( adjust_lower_i_index ) THEN |
|---|
| 793 | nxl_mg(l) = save_nxl_mg + 1 |
|---|
| 794 | ENDIF |
|---|
| 795 | |
|---|
| 796 | IF ( adjust_lower_j_index ) THEN |
|---|
| 797 | IF ( color == 1 ) THEN |
|---|
| 798 | nys_mg(l) = save_nys_mg - 1 |
|---|
| 799 | ELSE |
|---|
| 800 | nys_mg(l) = save_nys_mg + 1 |
|---|
| 801 | ENDIF |
|---|
| 802 | ENDIF |
|---|
| 803 | ! |
|---|
| 804 | !-- Without unrolling of loops, no cache optimization |
|---|
| 805 | !$OMP PARALLEL PRIVATE (i,j,k,km1,kp1) |
|---|
| 806 | !$OMP DO |
|---|
| 807 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 808 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 809 | !DIR$ 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) - f_mg(k,j,i) & |
|---|
| 820 | ) |
|---|
| 821 | ENDDO |
|---|
| 822 | ENDDO |
|---|
| 823 | ENDDO |
|---|
| 824 | |
|---|
| 825 | IF ( adjust_lower_i_index ) THEN |
|---|
| 826 | nxl_mg(l) = save_nxl_mg - 1 |
|---|
| 827 | ENDIF |
|---|
| 828 | |
|---|
| 829 | IF ( adjust_lower_j_index ) THEN |
|---|
| 830 | IF ( color == 1 ) THEN |
|---|
| 831 | nys_mg(l) = save_nys_mg + 1 |
|---|
| 832 | ELSE |
|---|
| 833 | nys_mg(l) = save_nys_mg - 1 |
|---|
| 834 | ENDIF |
|---|
| 835 | ENDIF |
|---|
| 836 | |
|---|
| 837 | !$OMP DO |
|---|
| 838 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 839 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 840 | !DIR$ IVDEP |
|---|
| 841 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 842 | km1 = k-ind_even_odd-1 |
|---|
| 843 | kp1 = k-ind_even_odd |
|---|
| 844 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 845 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 846 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 847 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 848 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 849 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 850 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 851 | - f_mg(k,j,i) ) |
|---|
| 852 | ENDDO |
|---|
| 853 | ENDDO |
|---|
| 854 | ENDDO |
|---|
| 855 | |
|---|
| 856 | IF ( adjust_lower_i_index ) THEN |
|---|
| 857 | nxl_mg(l) = save_nxl_mg + 1 |
|---|
| 858 | ENDIF |
|---|
| 859 | |
|---|
| 860 | IF ( adjust_lower_j_index ) THEN |
|---|
| 861 | IF ( color == 1 ) THEN |
|---|
| 862 | nys_mg(l) = save_nys_mg + 1 |
|---|
| 863 | ELSE |
|---|
| 864 | nys_mg(l) = save_nys_mg - 1 |
|---|
| 865 | ENDIF |
|---|
| 866 | ENDIF |
|---|
| 867 | |
|---|
| 868 | !$OMP DO |
|---|
| 869 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 870 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 871 | !DIR$ IVDEP |
|---|
| 872 | DO k = nzb+1, ind_even_odd |
|---|
| 873 | km1 = k+ind_even_odd |
|---|
| 874 | kp1 = k+ind_even_odd+1 |
|---|
| 875 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 876 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 877 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 878 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 879 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 880 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 881 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 882 | - f_mg(k,j,i) ) |
|---|
| 883 | ENDDO |
|---|
| 884 | ENDDO |
|---|
| 885 | ENDDO |
|---|
| 886 | |
|---|
| 887 | IF ( adjust_lower_i_index ) THEN |
|---|
| 888 | nxl_mg(l) = save_nxl_mg - 1 |
|---|
| 889 | ENDIF |
|---|
| 890 | |
|---|
| 891 | IF ( adjust_lower_j_index ) THEN |
|---|
| 892 | IF ( color == 1 ) THEN |
|---|
| 893 | nys_mg(l) = save_nys_mg - 1 |
|---|
| 894 | ELSE |
|---|
| 895 | nys_mg(l) = save_nys_mg + 1 |
|---|
| 896 | ENDIF |
|---|
| 897 | ENDIF |
|---|
| 898 | |
|---|
| 899 | !$OMP DO |
|---|
| 900 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 901 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 902 | !DIR$ IVDEP |
|---|
| 903 | DO k = nzb+1, ind_even_odd |
|---|
| 904 | km1 = k+ind_even_odd |
|---|
| 905 | kp1 = k+ind_even_odd+1 |
|---|
| 906 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 907 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 908 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 909 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 910 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 911 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 912 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 913 | - f_mg(k,j,i) ) |
|---|
| 914 | ENDDO |
|---|
| 915 | ENDDO |
|---|
| 916 | ENDDO |
|---|
| 917 | !$OMP END PARALLEL |
|---|
| 918 | |
|---|
| 919 | CALL cpu_log( log_point_s(36), 'redblack_no_unroll_f', 'stop' ) |
|---|
| 920 | |
|---|
| 921 | ELSE |
|---|
| 922 | ! |
|---|
| 923 | !-- Loop unrolling along y, only one i loop for better cache use |
|---|
| 924 | CALL cpu_log( log_point_s(38), 'redblack_unroll_f', 'start' ) |
|---|
| 925 | |
|---|
| 926 | !$OMP PARALLEL PRIVATE (i,j,k,ic,jc,km1,kp1,jj) |
|---|
| 927 | !$OMP DO |
|---|
| 928 | DO ic = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 929 | DO jc = nys_mg(l), nyn_mg(l), 4 |
|---|
| 930 | i = ic |
|---|
| 931 | jj = jc+2-color |
|---|
| 932 | !DIR$ IVDEP |
|---|
| 933 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 934 | km1 = k-ind_even_odd-1 |
|---|
| 935 | kp1 = k-ind_even_odd |
|---|
| 936 | j = jj |
|---|
| 937 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 938 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 939 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 940 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 941 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 942 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 943 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 944 | - f_mg(k,j,i) ) |
|---|
| 945 | |
|---|
| 946 | j = jj+2 |
|---|
| 947 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 948 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 949 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 950 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 951 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 952 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 953 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 954 | - f_mg(k,j,i) ) |
|---|
| 955 | ENDDO |
|---|
| 956 | |
|---|
| 957 | i = ic+1 |
|---|
| 958 | jj = jc+color-1 |
|---|
| 959 | !DIR$ IVDEP |
|---|
| 960 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 961 | km1 = k-ind_even_odd-1 |
|---|
| 962 | kp1 = k-ind_even_odd |
|---|
| 963 | j = jj |
|---|
| 964 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 965 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 966 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 967 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 968 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 969 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 970 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 971 | - f_mg(k,j,i) ) |
|---|
| 972 | |
|---|
| 973 | j = jj+2 |
|---|
| 974 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 975 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 976 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 977 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 978 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 979 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 980 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 981 | - f_mg(k,j,i) ) |
|---|
| 982 | ENDDO |
|---|
| 983 | |
|---|
| 984 | i = ic |
|---|
| 985 | jj = jc+color-1 |
|---|
| 986 | !DIR$ IVDEP |
|---|
| 987 | DO k = nzb+1, ind_even_odd |
|---|
| 988 | km1 = k+ind_even_odd |
|---|
| 989 | kp1 = k+ind_even_odd+1 |
|---|
| 990 | j = jj |
|---|
| 991 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 992 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 993 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 994 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 995 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 996 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 997 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 998 | - f_mg(k,j,i) ) |
|---|
| 999 | |
|---|
| 1000 | j = jj+2 |
|---|
| 1001 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 1002 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 1003 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 1004 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 1005 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 1006 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 1007 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 1008 | - f_mg(k,j,i) ) |
|---|
| 1009 | ENDDO |
|---|
| 1010 | |
|---|
| 1011 | i = ic+1 |
|---|
| 1012 | jj = jc+2-color |
|---|
| 1013 | !DIR$ IVDEP |
|---|
| 1014 | DO k = nzb+1, ind_even_odd |
|---|
| 1015 | km1 = k+ind_even_odd |
|---|
| 1016 | kp1 = k+ind_even_odd+1 |
|---|
| 1017 | j = jj |
|---|
| 1018 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 1019 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 1020 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 1021 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 1022 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 1023 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 1024 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 1025 | - f_mg(k,j,i) ) |
|---|
| 1026 | |
|---|
| 1027 | j = jj+2 |
|---|
| 1028 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 1029 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 1030 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 1031 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 1032 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 1033 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 1034 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 1035 | - f_mg(k,j,i) ) |
|---|
| 1036 | ENDDO |
|---|
| 1037 | |
|---|
| 1038 | ENDDO |
|---|
| 1039 | ENDDO |
|---|
| 1040 | !$OMP END PARALLEL |
|---|
| 1041 | |
|---|
| 1042 | CALL cpu_log( log_point_s(38), 'redblack_unroll_f', 'stop' ) |
|---|
| 1043 | |
|---|
| 1044 | ENDIF |
|---|
| 1045 | |
|---|
| 1046 | ! |
|---|
| 1047 | !-- Horizontal boundary conditions |
|---|
| 1048 | CALL special_exchange_horiz( p_mg, color ) |
|---|
| 1049 | |
|---|
| 1050 | IF ( .NOT. bc_lr_cyc ) THEN |
|---|
| 1051 | IF ( bc_dirichlet_l .OR. bc_radiation_l ) THEN |
|---|
| 1052 | p_mg(:,:,nxl_mg(l)-1) = p_mg(:,:,nxl_mg(l)) |
|---|
| 1053 | ENDIF |
|---|
| 1054 | IF ( bc_dirichlet_r .OR. bc_radiation_r ) THEN |
|---|
| 1055 | p_mg(:,:,nxr_mg(l)+1) = p_mg(:,:,nxr_mg(l)) |
|---|
| 1056 | ENDIF |
|---|
| 1057 | ENDIF |
|---|
| 1058 | |
|---|
| 1059 | IF ( .NOT. bc_ns_cyc ) THEN |
|---|
| 1060 | IF ( bc_dirichlet_n .OR. bc_radiation_n ) THEN |
|---|
| 1061 | p_mg(:,nyn_mg(l)+1,:) = p_mg(:,nyn_mg(l),:) |
|---|
| 1062 | ENDIF |
|---|
| 1063 | IF ( bc_dirichlet_s .OR. bc_radiation_s ) THEN |
|---|
| 1064 | p_mg(:,nys_mg(l)-1,:) = p_mg(:,nys_mg(l),:) |
|---|
| 1065 | ENDIF |
|---|
| 1066 | ENDIF |
|---|
| 1067 | |
|---|
| 1068 | ! |
|---|
| 1069 | !-- Bottom and top boundary conditions |
|---|
| 1070 | IF ( ibc_p_b == 1 ) THEN |
|---|
| 1071 | ! |
|---|
| 1072 | !-- Equivalent to p_mg(nzb,:,: ) = p_mg(nzb+1,:,:) |
|---|
| 1073 | p_mg(nzb,:,: ) = p_mg(ind_even_odd+1,:,:) |
|---|
| 1074 | ELSE |
|---|
| 1075 | p_mg(nzb,:,: ) = 0.0_wp |
|---|
| 1076 | ENDIF |
|---|
| 1077 | |
|---|
| 1078 | IF ( ibc_p_t == 1 ) THEN |
|---|
| 1079 | ! |
|---|
| 1080 | !-- Equivalent to p_mg(nzt_mg(l)+1,:,: ) = p_mg(nzt_mg(l),:,:) |
|---|
| 1081 | p_mg(nzt_mg(l)+1,:,: ) = p_mg(ind_even_odd,:,:) |
|---|
| 1082 | ELSE |
|---|
| 1083 | p_mg(nzt_mg(l)+1,:,: ) = 0.0_wp |
|---|
| 1084 | ENDIF |
|---|
| 1085 | |
|---|
| 1086 | ENDDO |
|---|
| 1087 | |
|---|
| 1088 | ENDDO |
|---|
| 1089 | |
|---|
| 1090 | ! |
|---|
| 1091 | !-- Reset lower index limits to their standard values (may happen on coarsest levels only) |
|---|
| 1092 | IF ( adjust_lower_i_index ) THEN |
|---|
| 1093 | nxl_mg(l) = save_nxl_mg |
|---|
| 1094 | ENDIF |
|---|
| 1095 | |
|---|
| 1096 | IF ( adjust_lower_j_index ) THEN |
|---|
| 1097 | nys_mg(l) = save_nys_mg |
|---|
| 1098 | ENDIF |
|---|
| 1099 | |
|---|
| 1100 | |
|---|
| 1101 | END SUBROUTINE redblack |
|---|
| 1102 | |
|---|
| 1103 | |
|---|
| 1104 | !--------------------------------------------------------------------------------------------------! |
|---|
| 1105 | ! Description: |
|---|
| 1106 | ! ------------ |
|---|
| 1107 | !> Sort k-dimension from sequential into blocks of even and odd. This is required to vectorize the |
|---|
| 1108 | !> red-black subroutine. Version for 3D-REAL arrays |
|---|
| 1109 | !--------------------------------------------------------------------------------------------------! |
|---|
| 1110 | SUBROUTINE sort_k_to_even_odd_blocks( p_mg , glevel ) |
|---|
| 1111 | |
|---|
| 1112 | |
|---|
| 1113 | USE indices, & |
|---|
| 1114 | ONLY: nxl_mg, & |
|---|
| 1115 | nxr_mg, & |
|---|
| 1116 | nys_mg, & |
|---|
| 1117 | nyn_mg, & |
|---|
| 1118 | nzb, & |
|---|
| 1119 | nzt_mg |
|---|
| 1120 | |
|---|
| 1121 | IMPLICIT NONE |
|---|
| 1122 | |
|---|
| 1123 | INTEGER(iwp), INTENT(IN) :: glevel !< grid level |
|---|
| 1124 | |
|---|
| 1125 | REAL(wp), DIMENSION(nzb:nzt_mg(glevel)+1,nys_mg(glevel)-1:nyn_mg(glevel)+1, & |
|---|
| 1126 | nxl_mg(glevel)-1:nxr_mg(glevel)+1) :: p_mg !< array to be sorted |
|---|
| 1127 | ! |
|---|
| 1128 | !-- Local variables |
|---|
| 1129 | INTEGER(iwp) :: i !< index variable along x |
|---|
| 1130 | INTEGER(iwp) :: ind !< index variable along z |
|---|
| 1131 | INTEGER(iwp) :: j !< index variable along y |
|---|
| 1132 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 1133 | INTEGER(iwp) :: l !< grid level |
|---|
| 1134 | |
|---|
| 1135 | REAL(wp), DIMENSION(nzb:nzt_mg(glevel)+1) :: tmp !< odd-even sorted temporary array |
|---|
| 1136 | |
|---|
| 1137 | |
|---|
| 1138 | CALL cpu_log( log_point_s(52), 'sort_k_to_even_odd', 'start' ) |
|---|
| 1139 | |
|---|
| 1140 | l = glevel |
|---|
| 1141 | ind_even_odd = even_odd_level(l) |
|---|
| 1142 | |
|---|
| 1143 | !$OMP PARALLEL PRIVATE (i,j,k,ind,tmp) |
|---|
| 1144 | !$OMP DO |
|---|
| 1145 | DO i = nxl_mg(l)-1, nxr_mg(l)+1 |
|---|
| 1146 | DO j = nys_mg(l)-1, nyn_mg(l)+1 |
|---|
| 1147 | |
|---|
| 1148 | ! |
|---|
| 1149 | !-- Sort the data with even k index |
|---|
| 1150 | ind = nzb-1 |
|---|
| 1151 | DO k = nzb, nzt_mg(l), 2 |
|---|
| 1152 | ind = ind + 1 |
|---|
| 1153 | tmp(ind) = p_mg(k,j,i) |
|---|
| 1154 | ENDDO |
|---|
| 1155 | ! |
|---|
| 1156 | !-- Sort the data with odd k index |
|---|
| 1157 | DO k = nzb+1, nzt_mg(l)+1, 2 |
|---|
| 1158 | ind = ind + 1 |
|---|
| 1159 | tmp(ind) = p_mg(k,j,i) |
|---|
| 1160 | ENDDO |
|---|
| 1161 | |
|---|
| 1162 | p_mg(:,j,i) = tmp |
|---|
| 1163 | |
|---|
| 1164 | ENDDO |
|---|
| 1165 | ENDDO |
|---|
| 1166 | !$OMP END PARALLEL |
|---|
| 1167 | |
|---|
| 1168 | CALL cpu_log( log_point_s(52), 'sort_k_to_even_odd', 'stop' ) |
|---|
| 1169 | |
|---|
| 1170 | END SUBROUTINE sort_k_to_even_odd_blocks |
|---|
| 1171 | |
|---|
| 1172 | |
|---|
| 1173 | !--------------------------------------------------------------------------------------------------! |
|---|
| 1174 | ! Description: |
|---|
| 1175 | ! ------------ |
|---|
| 1176 | !> Sort k-dimension from sequential into blocks of even and odd. This is required to vectorize the |
|---|
| 1177 | !> red-black subroutine. Version for 1D-REAL arrays |
|---|
| 1178 | !--------------------------------------------------------------------------------------------------! |
|---|
| 1179 | SUBROUTINE sort_k_to_even_odd_blocks_1d( f_mg, f_mg_b, glevel ) |
|---|
| 1180 | |
|---|
| 1181 | |
|---|
| 1182 | USE indices, & |
|---|
| 1183 | ONLY: nzb, & |
|---|
| 1184 | nzt_mg |
|---|
| 1185 | |
|---|
| 1186 | IMPLICIT NONE |
|---|
| 1187 | |
|---|
| 1188 | INTEGER(iwp), INTENT(IN) :: glevel !< grid level |
|---|
| 1189 | |
|---|
| 1190 | REAL(wp), DIMENSION(nzb+1:nzt_mg(glevel)) :: f_mg !< 1D input array |
|---|
| 1191 | REAL(wp), DIMENSION(nzb:nzt_mg(glevel)+1) :: f_mg_b !< 1D output array |
|---|
| 1192 | |
|---|
| 1193 | ! |
|---|
| 1194 | !-- Local variables |
|---|
| 1195 | INTEGER(iwp) :: ind !< index variable along z |
|---|
| 1196 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 1197 | |
|---|
| 1198 | |
|---|
| 1199 | ind = nzb - 1 |
|---|
| 1200 | ! |
|---|
| 1201 | !-- Sort the data with even k index |
|---|
| 1202 | DO k = nzb, nzt_mg(glevel), 2 |
|---|
| 1203 | ind = ind + 1 |
|---|
| 1204 | IF ( k >= nzb+1 .AND. k <= nzt_mg(glevel) ) THEN |
|---|
| 1205 | f_mg_b(ind) = f_mg(k) |
|---|
| 1206 | ENDIF |
|---|
| 1207 | ENDDO |
|---|
| 1208 | ! |
|---|
| 1209 | !-- Sort the data with odd k index |
|---|
| 1210 | DO k = nzb+1, nzt_mg(glevel)+1, 2 |
|---|
| 1211 | ind = ind + 1 |
|---|
| 1212 | IF( k >= nzb+1 .AND. k <= nzt_mg(glevel) ) THEN |
|---|
| 1213 | f_mg_b(ind) = f_mg(k) |
|---|
| 1214 | ENDIF |
|---|
| 1215 | ENDDO |
|---|
| 1216 | |
|---|
| 1217 | END SUBROUTINE sort_k_to_even_odd_blocks_1d |
|---|
| 1218 | |
|---|
| 1219 | |
|---|
| 1220 | !--------------------------------------------------------------------------------------------------! |
|---|
| 1221 | ! Description: |
|---|
| 1222 | ! ------------ |
|---|
| 1223 | !> Sort k-dimension from sequential into blocks of even and odd. This is required to vectorize the |
|---|
| 1224 | !> red-black subroutine. Version for 2D-INTEGER arrays |
|---|
| 1225 | !--------------------------------------------------------------------------------------------------! |
|---|
| 1226 | ! SUBROUTINE sort_k_to_even_odd_blocks_int( i_mg , glevel ) |
|---|
| 1227 | ! |
|---|
| 1228 | ! |
|---|
| 1229 | ! USE indices, & |
|---|
| 1230 | ! ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
|---|
| 1231 | ! |
|---|
| 1232 | ! IMPLICIT NONE |
|---|
| 1233 | ! |
|---|
| 1234 | ! INTEGER(iwp), INTENT(IN) :: glevel !< grid level |
|---|
| 1235 | ! |
|---|
| 1236 | ! INTEGER(iwp), DIMENSION(nzb:nzt_mg(glevel)+1, & |
|---|
| 1237 | ! nys_mg(glevel)-1:nyn_mg(glevel)+1, & |
|---|
| 1238 | ! nxl_mg(glevel)-1:nxr_mg(glevel)+1) :: & |
|---|
| 1239 | ! i_mg !< array to be sorted |
|---|
| 1240 | !! |
|---|
| 1241 | !!-- Local variables |
|---|
| 1242 | ! INTEGER(iwp) :: i !< index variabel along x |
|---|
| 1243 | ! INTEGER(iwp) :: j !< index variable along y |
|---|
| 1244 | ! INTEGER(iwp) :: k !< index variable along z |
|---|
| 1245 | ! INTEGER(iwp) :: l !< grid level |
|---|
| 1246 | ! INTEGER(iwp) :: ind !< index variable along z |
|---|
| 1247 | ! INTEGER(iwp),DIMENSION(nzb:nzt_mg(glevel)+1) :: tmp !< temporary odd-even sorted array |
|---|
| 1248 | ! |
|---|
| 1249 | ! |
|---|
| 1250 | ! CALL cpu_log( log_point_s(52), 'sort_k_to_even_odd', 'start' ) |
|---|
| 1251 | ! |
|---|
| 1252 | ! l = glevel |
|---|
| 1253 | ! ind_even_odd = even_odd_level(l) |
|---|
| 1254 | ! |
|---|
| 1255 | ! DO i = nxl_mg(l)-1, nxr_mg(l)+1 |
|---|
| 1256 | ! DO j = nys_mg(l)-1, nyn_mg(l)+1 |
|---|
| 1257 | ! |
|---|
| 1258 | ! |
|---|
| 1259 | !-- Sort the data with even k index |
|---|
| 1260 | ! ind = nzb-1 |
|---|
| 1261 | ! DO k = nzb, nzt_mg(l), 2 |
|---|
| 1262 | ! ind = ind + 1 |
|---|
| 1263 | ! tmp(ind) = i_mg(k,j,i) |
|---|
| 1264 | ! ENDDO |
|---|
| 1265 | ! |
|---|
| 1266 | !-- Sort the data with odd k index |
|---|
| 1267 | ! DO k = nzb+1, nzt_mg(l)+1, 2 |
|---|
| 1268 | ! ind = ind + 1 |
|---|
| 1269 | ! tmp(ind) = i_mg(k,j,i) |
|---|
| 1270 | ! ENDDO |
|---|
| 1271 | ! |
|---|
| 1272 | ! i_mg(:,j,i) = tmp |
|---|
| 1273 | ! |
|---|
| 1274 | ! ENDDO |
|---|
| 1275 | ! ENDDO |
|---|
| 1276 | ! |
|---|
| 1277 | ! CALL cpu_log( log_point_s(52), 'sort_k_to_even_odd', 'stop' ) |
|---|
| 1278 | ! |
|---|
| 1279 | ! END SUBROUTINE sort_k_to_even_odd_blocks_int |
|---|
| 1280 | |
|---|
| 1281 | |
|---|
| 1282 | !--------------------------------------------------------------------------------------------------! |
|---|
| 1283 | ! Description: |
|---|
| 1284 | ! ------------ |
|---|
| 1285 | !> Sort k-dimension from blocks of even and odd into sequential |
|---|
| 1286 | !--------------------------------------------------------------------------------------------------! |
|---|
| 1287 | SUBROUTINE sort_k_to_sequential( p_mg ) |
|---|
| 1288 | |
|---|
| 1289 | |
|---|
| 1290 | USE control_parameters, & |
|---|
| 1291 | ONLY: grid_level |
|---|
| 1292 | |
|---|
| 1293 | USE indices, & |
|---|
| 1294 | ONLY: nxl_mg, & |
|---|
| 1295 | nxr_mg, & |
|---|
| 1296 | nys_mg, & |
|---|
| 1297 | nyn_mg, & |
|---|
| 1298 | nzb, & |
|---|
| 1299 | nzt_mg |
|---|
| 1300 | |
|---|
| 1301 | IMPLICIT NONE |
|---|
| 1302 | |
|---|
| 1303 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1,nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1304 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: p_mg !< array to be sorted |
|---|
| 1305 | ! |
|---|
| 1306 | !-- Local variables |
|---|
| 1307 | INTEGER(iwp) :: i !< index variable along x |
|---|
| 1308 | INTEGER(iwp) :: j !< index variable along y |
|---|
| 1309 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 1310 | INTEGER(iwp) :: l !< grid level |
|---|
| 1311 | INTEGER(iwp) :: ind !< index variable along z |
|---|
| 1312 | |
|---|
| 1313 | REAL(wp),DIMENSION(nzb:nzt_mg(grid_level)+1) :: tmp !< |
|---|
| 1314 | |
|---|
| 1315 | |
|---|
| 1316 | l = grid_level |
|---|
| 1317 | |
|---|
| 1318 | !$OMP PARALLEL PRIVATE (i,j,k,ind,tmp) |
|---|
| 1319 | !$OMP DO |
|---|
| 1320 | DO i = nxl_mg(l)-1, nxr_mg(l)+1 |
|---|
| 1321 | DO j = nys_mg(l)-1, nyn_mg(l)+1 |
|---|
| 1322 | |
|---|
| 1323 | ind = nzb - 1 |
|---|
| 1324 | tmp = p_mg(:,j,i) |
|---|
| 1325 | DO k = nzb, nzt_mg(l), 2 |
|---|
| 1326 | ind = ind + 1 |
|---|
| 1327 | p_mg(k,j,i) = tmp(ind) |
|---|
| 1328 | ENDDO |
|---|
| 1329 | |
|---|
| 1330 | DO k = nzb+1, nzt_mg(l)+1, 2 |
|---|
| 1331 | ind = ind + 1 |
|---|
| 1332 | p_mg(k,j,i) = tmp(ind) |
|---|
| 1333 | ENDDO |
|---|
| 1334 | ENDDO |
|---|
| 1335 | ENDDO |
|---|
| 1336 | !$OMP END PARALLEL |
|---|
| 1337 | |
|---|
| 1338 | END SUBROUTINE sort_k_to_sequential |
|---|
| 1339 | |
|---|
| 1340 | |
|---|
| 1341 | !--------------------------------------------------------------------------------------------------! |
|---|
| 1342 | ! Description: |
|---|
| 1343 | ! ------------ |
|---|
| 1344 | !> Gather subdomain data from all PEs. |
|---|
| 1345 | !--------------------------------------------------------------------------------------------------! |
|---|
| 1346 | #if defined( __parallel ) |
|---|
| 1347 | SUBROUTINE mg_gather( f2, f2_sub ) |
|---|
| 1348 | |
|---|
| 1349 | USE control_parameters, & |
|---|
| 1350 | ONLY: grid_level |
|---|
| 1351 | |
|---|
| 1352 | USE cpulog, & |
|---|
| 1353 | ONLY: cpu_log, & |
|---|
| 1354 | log_point_s |
|---|
| 1355 | |
|---|
| 1356 | USE indices, & |
|---|
| 1357 | ONLY: mg_loc_ind, & |
|---|
| 1358 | nxl_mg, & |
|---|
| 1359 | nxr_mg, & |
|---|
| 1360 | nys_mg, & |
|---|
| 1361 | nyn_mg, & |
|---|
| 1362 | nzb, & |
|---|
| 1363 | nzt_mg |
|---|
| 1364 | |
|---|
| 1365 | IMPLICIT NONE |
|---|
| 1366 | |
|---|
| 1367 | INTEGER(iwp) :: i !< |
|---|
| 1368 | INTEGER(iwp) :: il !< |
|---|
| 1369 | INTEGER(iwp) :: ir !< |
|---|
| 1370 | INTEGER(iwp) :: j !< |
|---|
| 1371 | INTEGER(iwp) :: jn !< |
|---|
| 1372 | INTEGER(iwp) :: js !< |
|---|
| 1373 | INTEGER(iwp) :: k !< |
|---|
| 1374 | INTEGER(iwp) :: nwords !< |
|---|
| 1375 | |
|---|
| 1376 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1,nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1377 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: f2 !< |
|---|
| 1378 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1,nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1379 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: f2_l !< |
|---|
| 1380 | |
|---|
| 1381 | REAL(wp), DIMENSION(nzb:mg_loc_ind(5,myid)+1,mg_loc_ind(3,myid)-1:mg_loc_ind(4,myid)+1, & |
|---|
| 1382 | mg_loc_ind(1,myid)-1:mg_loc_ind(2,myid)+1) :: f2_sub !< |
|---|
| 1383 | |
|---|
| 1384 | |
|---|
| 1385 | CALL cpu_log( log_point_s(34), 'mg_gather', 'start' ) |
|---|
| 1386 | |
|---|
| 1387 | f2_l = 0.0_wp |
|---|
| 1388 | |
|---|
| 1389 | ! |
|---|
| 1390 | !-- Store the local subdomain array on the total array |
|---|
| 1391 | js = mg_loc_ind(3,myid) |
|---|
| 1392 | IF ( south_border_pe ) js = js - 1 |
|---|
| 1393 | jn = mg_loc_ind(4,myid) |
|---|
| 1394 | IF ( north_border_pe ) jn = jn + 1 |
|---|
| 1395 | il = mg_loc_ind(1,myid) |
|---|
| 1396 | IF ( left_border_pe ) il = il - 1 |
|---|
| 1397 | ir = mg_loc_ind(2,myid) |
|---|
| 1398 | IF ( right_border_pe ) ir = ir + 1 |
|---|
| 1399 | DO i = il, ir |
|---|
| 1400 | DO j = js, jn |
|---|
| 1401 | DO k = nzb, nzt_mg(grid_level)+1 |
|---|
| 1402 | f2_l(k,j,i) = f2_sub(k,j,i) |
|---|
| 1403 | ENDDO |
|---|
| 1404 | ENDDO |
|---|
| 1405 | ENDDO |
|---|
| 1406 | |
|---|
| 1407 | ! |
|---|
| 1408 | !-- Find out the number of array elements of the total array |
|---|
| 1409 | nwords = SIZE( f2 ) |
|---|
| 1410 | |
|---|
| 1411 | ! |
|---|
| 1412 | !-- Gather subdomain data from all PEs |
|---|
| 1413 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
|---|
| 1414 | CALL MPI_ALLREDUCE( f2_l(nzb,nys_mg(grid_level)-1,nxl_mg(grid_level)-1), & |
|---|
| 1415 | f2(nzb,nys_mg(grid_level)-1,nxl_mg(grid_level)-1), nwords, MPI_REAL, & |
|---|
| 1416 | MPI_SUM, comm2d, ierr ) |
|---|
| 1417 | |
|---|
| 1418 | CALL cpu_log( log_point_s(34), 'mg_gather', 'stop' ) |
|---|
| 1419 | |
|---|
| 1420 | END SUBROUTINE mg_gather |
|---|
| 1421 | #endif |
|---|
| 1422 | |
|---|
| 1423 | |
|---|
| 1424 | !--------------------------------------------------------------------------------------------------! |
|---|
| 1425 | ! Description: |
|---|
| 1426 | ! ------------ |
|---|
| 1427 | !> @todo It might be possible to improve the speed of this routine by using non-blocking |
|---|
| 1428 | !> communication |
|---|
| 1429 | !--------------------------------------------------------------------------------------------------! |
|---|
| 1430 | #if defined( __parallel ) |
|---|
| 1431 | SUBROUTINE mg_scatter( p2, p2_sub ) |
|---|
| 1432 | |
|---|
| 1433 | USE control_parameters, & |
|---|
| 1434 | ONLY: grid_level |
|---|
| 1435 | |
|---|
| 1436 | USE cpulog, & |
|---|
| 1437 | ONLY: cpu_log, & |
|---|
| 1438 | log_point_s |
|---|
| 1439 | |
|---|
| 1440 | USE indices, & |
|---|
| 1441 | ONLY: mg_loc_ind, & |
|---|
| 1442 | nxl_mg, & |
|---|
| 1443 | nxr_mg, & |
|---|
| 1444 | nys_mg, & |
|---|
| 1445 | nyn_mg, & |
|---|
| 1446 | nzb, & |
|---|
| 1447 | nzt_mg |
|---|
| 1448 | |
|---|
| 1449 | IMPLICIT NONE |
|---|
| 1450 | |
|---|
| 1451 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level-1)+1,nys_mg(grid_level-1)-1:nyn_mg(grid_level-1)+1, & |
|---|
| 1452 | nxl_mg(grid_level-1)-1:nxr_mg(grid_level-1)+1) :: p2 !< |
|---|
| 1453 | |
|---|
| 1454 | REAL(wp), DIMENSION(nzb:mg_loc_ind(5,myid)+1,mg_loc_ind(3,myid)-1:mg_loc_ind(4,myid)+1, & |
|---|
| 1455 | mg_loc_ind(1,myid)-1:mg_loc_ind(2,myid)+1) :: p2_sub !< |
|---|
| 1456 | |
|---|
| 1457 | |
|---|
| 1458 | CALL cpu_log( log_point_s(35), 'mg_scatter', 'start' ) |
|---|
| 1459 | |
|---|
| 1460 | p2_sub = p2(:,mg_loc_ind(3,myid)-1:mg_loc_ind(4,myid)+1, & |
|---|
| 1461 | mg_loc_ind(1,myid)-1:mg_loc_ind(2,myid)+1) |
|---|
| 1462 | |
|---|
| 1463 | CALL cpu_log( log_point_s(35), 'mg_scatter', 'stop' ) |
|---|
| 1464 | |
|---|
| 1465 | END SUBROUTINE mg_scatter |
|---|
| 1466 | #endif |
|---|
| 1467 | |
|---|
| 1468 | !--------------------------------------------------------------------------------------------------! |
|---|
| 1469 | ! Description: |
|---|
| 1470 | ! ------------ |
|---|
| 1471 | !> This is where the multigrid technique takes place. V- and W- Cycle are implemented and steered by |
|---|
| 1472 | !> the parameter "gamma". Parameter "nue" determines the convergence of the multigrid iterative |
|---|
| 1473 | !> solution. There are nue times RB-GS iterations. It should be set to "1" or "2", considering the |
|---|
| 1474 | !> time effort one would like to invest. Last choice shows a very good converging factor, but leads |
|---|
| 1475 | !> to an increase in computing time. |
|---|
| 1476 | !--------------------------------------------------------------------------------------------------! |
|---|
| 1477 | RECURSIVE SUBROUTINE next_mg_level( f_mg, p_mg, p3, r ) |
|---|
| 1478 | |
|---|
| 1479 | USE control_parameters, & |
|---|
| 1480 | ONLY: bc_lr_dirrad, & |
|---|
| 1481 | bc_lr_raddir, & |
|---|
| 1482 | bc_ns_dirrad, & |
|---|
| 1483 | bc_ns_raddir, & |
|---|
| 1484 | child_domain, & |
|---|
| 1485 | gamma_mg, & |
|---|
| 1486 | grid_level_count, & |
|---|
| 1487 | maximum_grid_level, & |
|---|
| 1488 | mg_switch_to_pe0_level, & |
|---|
| 1489 | mg_switch_to_pe0, & |
|---|
| 1490 | ngsrb |
|---|
| 1491 | |
|---|
| 1492 | USE indices, & |
|---|
| 1493 | ONLY: mg_loc_ind, & |
|---|
| 1494 | nxl, & |
|---|
| 1495 | nxl_mg, & |
|---|
| 1496 | nxr, & |
|---|
| 1497 | nxr_mg, & |
|---|
| 1498 | nys, & |
|---|
| 1499 | nys_mg, & |
|---|
| 1500 | nyn, & |
|---|
| 1501 | nyn_mg, & |
|---|
| 1502 | nzb, & |
|---|
| 1503 | nzt, & |
|---|
| 1504 | nzt_mg |
|---|
| 1505 | |
|---|
| 1506 | IMPLICIT NONE |
|---|
| 1507 | |
|---|
| 1508 | INTEGER(iwp) :: i !< index variable along x |
|---|
| 1509 | INTEGER(iwp) :: j !< index variable along y |
|---|
| 1510 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 1511 | INTEGER(iwp) :: nxl_mg_save !< |
|---|
| 1512 | INTEGER(iwp) :: nxr_mg_save !< |
|---|
| 1513 | INTEGER(iwp) :: nyn_mg_save !< |
|---|
| 1514 | INTEGER(iwp) :: nys_mg_save !< |
|---|
| 1515 | INTEGER(iwp) :: nzt_mg_save !< |
|---|
| 1516 | |
|---|
| 1517 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1,nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1518 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: f_mg !< |
|---|
| 1519 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1,nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1520 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: p_mg !< |
|---|
| 1521 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1,nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1522 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: p3 !< |
|---|
| 1523 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1,nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1524 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: r !< |
|---|
| 1525 | |
|---|
| 1526 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level-1)+1,nys_mg(grid_level-1)-1:nyn_mg(grid_level-1)+1, & |
|---|
| 1527 | nxl_mg(grid_level-1)-1:nxr_mg(grid_level-1)+1) :: f2 !< |
|---|
| 1528 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level-1)+1,nys_mg(grid_level-1)-1:nyn_mg(grid_level-1)+1, & |
|---|
| 1529 | nxl_mg(grid_level-1)-1:nxr_mg(grid_level-1)+1) :: p2 !< |
|---|
| 1530 | |
|---|
| 1531 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: f2_sub !< |
|---|
| 1532 | |
|---|
| 1533 | #if defined( __parallel ) |
|---|
| 1534 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: p2_sub !< |
|---|
| 1535 | #endif |
|---|
| 1536 | |
|---|
| 1537 | ! |
|---|
| 1538 | !-- Restriction to the coarsest grid |
|---|
| 1539 | 10 IF ( grid_level == 1 ) THEN |
|---|
| 1540 | |
|---|
| 1541 | ! |
|---|
| 1542 | !-- Solution on the coarsest grid. Double the number of Gauss-Seidel iterations in order to get a |
|---|
| 1543 | !-- more accurate solution. |
|---|
| 1544 | ngsrb = 2 * ngsrb |
|---|
| 1545 | |
|---|
| 1546 | ind_even_odd = even_odd_level(grid_level) |
|---|
| 1547 | |
|---|
| 1548 | CALL redblack( f_mg, p_mg ) |
|---|
| 1549 | |
|---|
| 1550 | ngsrb = ngsrb / 2 |
|---|
| 1551 | |
|---|
| 1552 | |
|---|
| 1553 | ELSEIF ( grid_level /= 1 ) THEN |
|---|
| 1554 | |
|---|
| 1555 | grid_level_count(grid_level) = grid_level_count(grid_level) + 1 |
|---|
| 1556 | |
|---|
| 1557 | ! |
|---|
| 1558 | !-- Solution on the actual grid level |
|---|
| 1559 | ind_even_odd = even_odd_level(grid_level) |
|---|
| 1560 | |
|---|
| 1561 | CALL redblack( f_mg, p_mg ) |
|---|
| 1562 | |
|---|
| 1563 | ! |
|---|
| 1564 | !-- Determination of the actual residual |
|---|
| 1565 | CALL resid( f_mg, p_mg, r ) |
|---|
| 1566 | |
|---|
| 1567 | !-- Restriction of the residual (finer grid values!) to the next coarser grid. Therefore, the |
|---|
| 1568 | !-- grid level has to be decremented now. nxl..nzt have to be set to the coarse grid values, |
|---|
| 1569 | !-- because these variables are needed for the exchange of ghost points in routine exchange_horiz |
|---|
| 1570 | grid_level = grid_level - 1 |
|---|
| 1571 | |
|---|
| 1572 | nxl = nxl_mg(grid_level) |
|---|
| 1573 | nys = nys_mg(grid_level) |
|---|
| 1574 | nxr = nxr_mg(grid_level) |
|---|
| 1575 | nyn = nyn_mg(grid_level) |
|---|
| 1576 | nzt = nzt_mg(grid_level) |
|---|
| 1577 | |
|---|
| 1578 | IF ( grid_level == mg_switch_to_pe0_level ) THEN |
|---|
| 1579 | |
|---|
| 1580 | ! |
|---|
| 1581 | !-- From this level on, calculations are done on PE0 only. First, carry out restriction on the |
|---|
| 1582 | !-- subdomain. Therefore, indices of the level have to be changed to subdomain values in |
|---|
| 1583 | !-- between (otherwise, the restrict routine would expect the gathered array). |
|---|
| 1584 | |
|---|
| 1585 | nxl_mg_save = nxl_mg(grid_level) |
|---|
| 1586 | nxr_mg_save = nxr_mg(grid_level) |
|---|
| 1587 | nys_mg_save = nys_mg(grid_level) |
|---|
| 1588 | nyn_mg_save = nyn_mg(grid_level) |
|---|
| 1589 | nzt_mg_save = nzt_mg(grid_level) |
|---|
| 1590 | nxl_mg(grid_level) = mg_loc_ind(1,myid) |
|---|
| 1591 | nxr_mg(grid_level) = mg_loc_ind(2,myid) |
|---|
| 1592 | nys_mg(grid_level) = mg_loc_ind(3,myid) |
|---|
| 1593 | nyn_mg(grid_level) = mg_loc_ind(4,myid) |
|---|
| 1594 | nzt_mg(grid_level) = mg_loc_ind(5,myid) |
|---|
| 1595 | nxl = mg_loc_ind(1,myid) |
|---|
| 1596 | nxr = mg_loc_ind(2,myid) |
|---|
| 1597 | nys = mg_loc_ind(3,myid) |
|---|
| 1598 | nyn = mg_loc_ind(4,myid) |
|---|
| 1599 | nzt = mg_loc_ind(5,myid) |
|---|
| 1600 | |
|---|
| 1601 | ALLOCATE( f2_sub(nzb:nzt_mg(grid_level)+1,nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1602 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) ) |
|---|
| 1603 | |
|---|
| 1604 | CALL restrict( f2_sub, r ) |
|---|
| 1605 | |
|---|
| 1606 | ! |
|---|
| 1607 | !-- Restore the correct indices of this level |
|---|
| 1608 | nxl_mg(grid_level) = nxl_mg_save |
|---|
| 1609 | nxr_mg(grid_level) = nxr_mg_save |
|---|
| 1610 | nys_mg(grid_level) = nys_mg_save |
|---|
| 1611 | nyn_mg(grid_level) = nyn_mg_save |
|---|
| 1612 | nzt_mg(grid_level) = nzt_mg_save |
|---|
| 1613 | nxl = nxl_mg(grid_level) |
|---|
| 1614 | nxr = nxr_mg(grid_level) |
|---|
| 1615 | nys = nys_mg(grid_level) |
|---|
| 1616 | nyn = nyn_mg(grid_level) |
|---|
| 1617 | nzt = nzt_mg(grid_level) |
|---|
| 1618 | ! |
|---|
| 1619 | !-- Gather all arrays from the subdomains on PE0 |
|---|
| 1620 | #if defined( __parallel ) |
|---|
| 1621 | CALL mg_gather( f2, f2_sub ) |
|---|
| 1622 | #endif |
|---|
| 1623 | |
|---|
| 1624 | ! |
|---|
| 1625 | !-- Set switch for routine exchange_horiz, that no ghostpoint exchange has to be carried out |
|---|
| 1626 | !-- from now on |
|---|
| 1627 | mg_switch_to_pe0 = .TRUE. |
|---|
| 1628 | |
|---|
| 1629 | ! |
|---|
| 1630 | !-- In case of non-cyclic lateral boundary conditions, both in- and outflow conditions have to |
|---|
| 1631 | !-- be used on all PEs after the switch, because then they have the total domain. |
|---|
| 1632 | IF ( bc_lr_dirrad ) THEN |
|---|
| 1633 | bc_dirichlet_l = .TRUE. |
|---|
| 1634 | bc_dirichlet_r = .FALSE. |
|---|
| 1635 | bc_radiation_l = .FALSE. |
|---|
| 1636 | bc_radiation_r = .TRUE. |
|---|
| 1637 | ELSEIF ( bc_lr_raddir ) THEN |
|---|
| 1638 | bc_dirichlet_l = .FALSE. |
|---|
| 1639 | bc_dirichlet_r = .TRUE. |
|---|
| 1640 | bc_radiation_l = .TRUE. |
|---|
| 1641 | bc_radiation_r = .FALSE. |
|---|
| 1642 | ELSEIF ( child_domain .OR. nesting_offline ) THEN |
|---|
| 1643 | bc_dirichlet_l = .TRUE. |
|---|
| 1644 | bc_dirichlet_r = .TRUE. |
|---|
| 1645 | ENDIF |
|---|
| 1646 | |
|---|
| 1647 | IF ( bc_ns_dirrad ) THEN |
|---|
| 1648 | bc_dirichlet_n = .TRUE. |
|---|
| 1649 | bc_dirichlet_s = .FALSE. |
|---|
| 1650 | bc_radiation_n = .FALSE. |
|---|
| 1651 | bc_radiation_s = .TRUE. |
|---|
| 1652 | ELSEIF ( bc_ns_raddir ) THEN |
|---|
| 1653 | bc_dirichlet_n = .FALSE. |
|---|
| 1654 | bc_dirichlet_s = .TRUE. |
|---|
| 1655 | bc_radiation_n = .TRUE. |
|---|
| 1656 | bc_radiation_s = .FALSE. |
|---|
| 1657 | ELSEIF ( child_domain .OR. nesting_offline) THEN |
|---|
| 1658 | bc_dirichlet_s = .TRUE. |
|---|
| 1659 | bc_dirichlet_n = .TRUE. |
|---|
| 1660 | ENDIF |
|---|
| 1661 | |
|---|
| 1662 | DEALLOCATE( f2_sub ) |
|---|
| 1663 | |
|---|
| 1664 | ELSE |
|---|
| 1665 | |
|---|
| 1666 | CALL restrict( f2, r ) |
|---|
| 1667 | |
|---|
| 1668 | ind_even_odd = even_odd_level(grid_level) ! Must be after restrict |
|---|
| 1669 | |
|---|
| 1670 | ENDIF |
|---|
| 1671 | |
|---|
| 1672 | p2 = 0.0_wp |
|---|
| 1673 | |
|---|
| 1674 | ! |
|---|
| 1675 | !-- Repeat the same procedure untill the coarsest grid is reached |
|---|
| 1676 | CALL next_mg_level( f2, p2, p3, r ) |
|---|
| 1677 | |
|---|
| 1678 | ENDIF |
|---|
| 1679 | |
|---|
| 1680 | ! |
|---|
| 1681 | !-- Now follows the prolongation |
|---|
| 1682 | IF ( grid_level >= 2 ) THEN |
|---|
| 1683 | |
|---|
| 1684 | ! |
|---|
| 1685 | !-- Prolongation of the new residual. The values are transferred from the coarse to the next |
|---|
| 1686 | !-- finer grid. |
|---|
| 1687 | IF ( grid_level == mg_switch_to_pe0_level+1 ) THEN |
|---|
| 1688 | |
|---|
| 1689 | #if defined( __parallel ) |
|---|
| 1690 | ! |
|---|
| 1691 | !-- At this level, the new residual first has to be scattered from PE0 to the other PEs |
|---|
| 1692 | ALLOCATE( p2_sub(nzb:mg_loc_ind(5,myid)+1,mg_loc_ind(3,myid)-1:mg_loc_ind(4,myid)+1, & |
|---|
| 1693 | mg_loc_ind(1,myid)-1:mg_loc_ind(2,myid)+1) ) |
|---|
| 1694 | |
|---|
| 1695 | CALL mg_scatter( p2, p2_sub ) |
|---|
| 1696 | |
|---|
| 1697 | ! |
|---|
| 1698 | !-- Therefore, indices of the previous level have to be changed to subdomain values in between |
|---|
| 1699 | !-- (otherwise, the prolong routine would expect the gathered array). |
|---|
| 1700 | nxl_mg_save = nxl_mg(grid_level-1) |
|---|
| 1701 | nxr_mg_save = nxr_mg(grid_level-1) |
|---|
| 1702 | nys_mg_save = nys_mg(grid_level-1) |
|---|
| 1703 | nyn_mg_save = nyn_mg(grid_level-1) |
|---|
| 1704 | nzt_mg_save = nzt_mg(grid_level-1) |
|---|
| 1705 | nxl_mg(grid_level-1) = mg_loc_ind(1,myid) |
|---|
| 1706 | nxr_mg(grid_level-1) = mg_loc_ind(2,myid) |
|---|
| 1707 | nys_mg(grid_level-1) = mg_loc_ind(3,myid) |
|---|
| 1708 | nyn_mg(grid_level-1) = mg_loc_ind(4,myid) |
|---|
| 1709 | nzt_mg(grid_level-1) = mg_loc_ind(5,myid) |
|---|
| 1710 | |
|---|
| 1711 | ! |
|---|
| 1712 | !-- Set switch for routine exchange_horiz, that ghost point exchange has to be carried out |
|---|
| 1713 | !-- again from now on |
|---|
| 1714 | mg_switch_to_pe0 = .FALSE. |
|---|
| 1715 | |
|---|
| 1716 | ! |
|---|
| 1717 | !-- For non-cyclic lateral boundary conditions and in case of nesting, restore the in-/outflow |
|---|
| 1718 | !-- conditions. |
|---|
| 1719 | bc_dirichlet_l = .FALSE.; bc_dirichlet_r = .FALSE. |
|---|
| 1720 | bc_dirichlet_n = .FALSE.; bc_dirichlet_s = .FALSE. |
|---|
| 1721 | bc_radiation_l = .FALSE.; bc_radiation_r = .FALSE. |
|---|
| 1722 | bc_radiation_n = .FALSE.; bc_radiation_s = .FALSE. |
|---|
| 1723 | |
|---|
| 1724 | IF ( pleft == MPI_PROC_NULL ) THEN |
|---|
| 1725 | IF ( bc_lr_dirrad .OR. child_domain .OR. nesting_offline ) THEN |
|---|
| 1726 | bc_dirichlet_l = .TRUE. |
|---|
| 1727 | ELSEIF ( bc_lr_raddir ) THEN |
|---|
| 1728 | bc_radiation_l = .TRUE. |
|---|
| 1729 | ENDIF |
|---|
| 1730 | ENDIF |
|---|
| 1731 | |
|---|
| 1732 | IF ( pright == MPI_PROC_NULL ) THEN |
|---|
| 1733 | IF ( bc_lr_dirrad ) THEN |
|---|
| 1734 | bc_radiation_r = .TRUE. |
|---|
| 1735 | ELSEIF ( bc_lr_raddir .OR. child_domain .OR. nesting_offline ) THEN |
|---|
| 1736 | bc_dirichlet_r = .TRUE. |
|---|
| 1737 | ENDIF |
|---|
| 1738 | ENDIF |
|---|
| 1739 | |
|---|
| 1740 | IF ( psouth == MPI_PROC_NULL ) THEN |
|---|
| 1741 | IF ( bc_ns_dirrad ) THEN |
|---|
| 1742 | bc_radiation_s = .TRUE. |
|---|
| 1743 | ELSEIF ( bc_ns_raddir .OR. child_domain .OR. nesting_offline ) THEN |
|---|
| 1744 | bc_dirichlet_s = .TRUE. |
|---|
| 1745 | ENDIF |
|---|
| 1746 | ENDIF |
|---|
| 1747 | |
|---|
| 1748 | IF ( pnorth == MPI_PROC_NULL ) THEN |
|---|
| 1749 | IF ( bc_ns_dirrad .OR. child_domain .OR. nesting_offline ) THEN |
|---|
| 1750 | bc_dirichlet_n = .TRUE. |
|---|
| 1751 | ELSEIF ( bc_ns_raddir ) THEN |
|---|
| 1752 | bc_radiation_n = .TRUE. |
|---|
| 1753 | ENDIF |
|---|
| 1754 | ENDIF |
|---|
| 1755 | |
|---|
| 1756 | CALL prolong( p2_sub, p3 ) |
|---|
| 1757 | |
|---|
| 1758 | ! |
|---|
| 1759 | !-- Restore the correct indices of the previous level |
|---|
| 1760 | nxl_mg(grid_level-1) = nxl_mg_save |
|---|
| 1761 | nxr_mg(grid_level-1) = nxr_mg_save |
|---|
| 1762 | nys_mg(grid_level-1) = nys_mg_save |
|---|
| 1763 | nyn_mg(grid_level-1) = nyn_mg_save |
|---|
| 1764 | nzt_mg(grid_level-1) = nzt_mg_save |
|---|
| 1765 | |
|---|
| 1766 | DEALLOCATE( p2_sub ) |
|---|
| 1767 | #endif |
|---|
| 1768 | |
|---|
| 1769 | ELSE |
|---|
| 1770 | |
|---|
| 1771 | CALL prolong( p2, p3 ) |
|---|
| 1772 | |
|---|
| 1773 | ENDIF |
|---|
| 1774 | |
|---|
| 1775 | ! |
|---|
| 1776 | !-- Computation of the new pressure correction. Therefore, values from prior grids are added up |
|---|
| 1777 | !-- automatically stage by stage. |
|---|
| 1778 | DO i = nxl_mg(grid_level)-1, nxr_mg(grid_level)+1 |
|---|
| 1779 | DO j = nys_mg(grid_level)-1, nyn_mg(grid_level)+1 |
|---|
| 1780 | DO k = nzb, nzt_mg(grid_level)+1 |
|---|
| 1781 | p_mg(k,j,i) = p_mg(k,j,i) + p3(k,j,i) |
|---|
| 1782 | ENDDO |
|---|
| 1783 | ENDDO |
|---|
| 1784 | ENDDO |
|---|
| 1785 | |
|---|
| 1786 | ! |
|---|
| 1787 | !-- Relaxation of the new solution |
|---|
| 1788 | CALL redblack( f_mg, p_mg ) |
|---|
| 1789 | |
|---|
| 1790 | ENDIF |
|---|
| 1791 | |
|---|
| 1792 | |
|---|
| 1793 | ! |
|---|
| 1794 | !-- The following few lines serve the steering of the multigrid scheme |
|---|
| 1795 | IF ( grid_level == maximum_grid_level ) THEN |
|---|
| 1796 | |
|---|
| 1797 | GOTO 20 |
|---|
| 1798 | |
|---|
| 1799 | ELSEIF ( grid_level /= maximum_grid_level .AND. grid_level /= 1 .AND. & |
|---|
| 1800 | grid_level_count(grid_level) /= gamma_mg ) THEN |
|---|
| 1801 | |
|---|
| 1802 | GOTO 10 |
|---|
| 1803 | |
|---|
| 1804 | ENDIF |
|---|
| 1805 | |
|---|
| 1806 | ! |
|---|
| 1807 | !-- Reset counter for the next call of poismg |
|---|
| 1808 | grid_level_count(grid_level) = 0 |
|---|
| 1809 | |
|---|
| 1810 | ! |
|---|
| 1811 | !-- Continue with the next finer level. nxl..nzt have to be set to the finer grid values, because |
|---|
| 1812 | !-- these variables are needed for the exchange of ghost points in routine exchange_horiz. |
|---|
| 1813 | grid_level = grid_level + 1 |
|---|
| 1814 | ind_even_odd = even_odd_level(grid_level) |
|---|
| 1815 | |
|---|
| 1816 | nxl = nxl_mg(grid_level) |
|---|
| 1817 | nxr = nxr_mg(grid_level) |
|---|
| 1818 | nys = nys_mg(grid_level) |
|---|
| 1819 | nyn = nyn_mg(grid_level) |
|---|
| 1820 | nzt = nzt_mg(grid_level) |
|---|
| 1821 | |
|---|
| 1822 | 20 CONTINUE |
|---|
| 1823 | |
|---|
| 1824 | END SUBROUTINE next_mg_level |
|---|
| 1825 | |
|---|
| 1826 | |
|---|
| 1827 | !--------------------------------------------------------------------------------------------------! |
|---|
| 1828 | ! Description: |
|---|
| 1829 | ! ------------ |
|---|
| 1830 | !> Initial settings for sorting k-dimension from sequential order (alternate even/odd) into blocks |
|---|
| 1831 | !> of even and odd or vice versa |
|---|
| 1832 | !--------------------------------------------------------------------------------------------------! |
|---|
| 1833 | SUBROUTINE init_even_odd_blocks |
|---|
| 1834 | |
|---|
| 1835 | |
|---|
| 1836 | USE arrays_3d, & |
|---|
| 1837 | ONLY: f1_mg, & |
|---|
| 1838 | f2_mg, & |
|---|
| 1839 | f3_mg |
|---|
| 1840 | |
|---|
| 1841 | USE control_parameters, & |
|---|
| 1842 | ONLY: grid_level, & |
|---|
| 1843 | maximum_grid_level |
|---|
| 1844 | |
|---|
| 1845 | USE indices, & |
|---|
| 1846 | ONLY: nzb, & |
|---|
| 1847 | nzt, & |
|---|
| 1848 | nzt_mg |
|---|
| 1849 | |
|---|
| 1850 | USE indices, & |
|---|
| 1851 | ONLY: nzb, & |
|---|
| 1852 | nzt_mg |
|---|
| 1853 | |
|---|
| 1854 | IMPLICIT NONE |
|---|
| 1855 | ! |
|---|
| 1856 | !-- Local variables |
|---|
| 1857 | INTEGER(iwp) :: i !< |
|---|
| 1858 | INTEGER(iwp) :: l !< |
|---|
| 1859 | |
|---|
| 1860 | LOGICAL, SAVE :: lfirst = .TRUE. !< |
|---|
| 1861 | |
|---|
| 1862 | |
|---|
| 1863 | IF ( .NOT. lfirst ) RETURN |
|---|
| 1864 | |
|---|
| 1865 | ALLOCATE( even_odd_level(maximum_grid_level) ) |
|---|
| 1866 | |
|---|
| 1867 | ALLOCATE( f1_mg_b(nzb:nzt+1,maximum_grid_level), f2_mg_b(nzb:nzt+1,maximum_grid_level), & |
|---|
| 1868 | f3_mg_b(nzb:nzt+1,maximum_grid_level) ) |
|---|
| 1869 | |
|---|
| 1870 | ! |
|---|
| 1871 | !-- Set border index between the even and odd block |
|---|
| 1872 | DO i = maximum_grid_level, 1, -1 |
|---|
| 1873 | even_odd_level(i) = nzt_mg(i) / 2 |
|---|
| 1874 | ENDDO |
|---|
| 1875 | |
|---|
| 1876 | ! |
|---|
| 1877 | !-- Sort grid coefficients used in red/black scheme and for calculating the residual to block |
|---|
| 1878 | !-- (even/odd) structure |
|---|
| 1879 | DO l = maximum_grid_level, 1 , -1 |
|---|
| 1880 | CALL sort_k_to_even_odd_blocks( f1_mg(nzb+1:nzt_mg(grid_level),l), & |
|---|
| 1881 | f1_mg_b(nzb:nzt_mg(grid_level)+1,l), l ) |
|---|
| 1882 | CALL sort_k_to_even_odd_blocks( f2_mg(nzb+1:nzt_mg(grid_level),l), & |
|---|
| 1883 | f2_mg_b(nzb:nzt_mg(grid_level)+1,l), l ) |
|---|
| 1884 | CALL sort_k_to_even_odd_blocks( f3_mg(nzb+1:nzt_mg(grid_level),l), & |
|---|
| 1885 | f3_mg_b(nzb:nzt_mg(grid_level)+1,l), l ) |
|---|
| 1886 | ENDDO |
|---|
| 1887 | |
|---|
| 1888 | lfirst = .FALSE. |
|---|
| 1889 | |
|---|
| 1890 | END SUBROUTINE init_even_odd_blocks |
|---|
| 1891 | |
|---|
| 1892 | |
|---|
| 1893 | !--------------------------------------------------------------------------------------------------! |
|---|
| 1894 | ! Description: |
|---|
| 1895 | ! ------------ |
|---|
| 1896 | !> Special exchange_horiz subroutine for use in redblack. Transfers only "red" or "black" data |
|---|
| 1897 | !> points. |
|---|
| 1898 | !--------------------------------------------------------------------------------------------------! |
|---|
| 1899 | SUBROUTINE special_exchange_horiz( p_mg, color ) |
|---|
| 1900 | |
|---|
| 1901 | |
|---|
| 1902 | USE control_parameters, & |
|---|
| 1903 | ONLY: grid_level |
|---|
| 1904 | |
|---|
| 1905 | #if defined( __parallel ) |
|---|
| 1906 | USE control_parameters, & |
|---|
| 1907 | ONLY: mg_switch_to_pe0_level, & |
|---|
| 1908 | synchronous_exchange |
|---|
| 1909 | #endif |
|---|
| 1910 | |
|---|
| 1911 | USE indices, & |
|---|
| 1912 | ONLY: nxl_mg, & |
|---|
| 1913 | nxr_mg, & |
|---|
| 1914 | nys_mg, & |
|---|
| 1915 | nyn_mg, & |
|---|
| 1916 | nzb, & |
|---|
| 1917 | nzt_mg |
|---|
| 1918 | |
|---|
| 1919 | #if defined( __parallel ) |
|---|
| 1920 | USE indices, & |
|---|
| 1921 | ONLY: nxl, & |
|---|
| 1922 | nxr, & |
|---|
| 1923 | nys, & |
|---|
| 1924 | nyn, & |
|---|
| 1925 | nzt |
|---|
| 1926 | #endif |
|---|
| 1927 | |
|---|
| 1928 | IMPLICIT NONE |
|---|
| 1929 | |
|---|
| 1930 | INTEGER(iwp), INTENT(IN) :: color !< flag for grid point type (red or black) |
|---|
| 1931 | |
|---|
| 1932 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1,nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1933 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: p_mg !< treated array |
|---|
| 1934 | |
|---|
| 1935 | |
|---|
| 1936 | #if defined ( __parallel ) |
|---|
| 1937 | ! |
|---|
| 1938 | !-- Local variables |
|---|
| 1939 | INTEGER(iwp) :: i !< index variable along x |
|---|
| 1940 | INTEGER(iwp) :: i1 !< index variable along x on coarse level |
|---|
| 1941 | INTEGER(iwp) :: i2 !< index variable along x on coarse level |
|---|
| 1942 | |
|---|
| 1943 | INTEGER(iwp) :: j !< index variable along y |
|---|
| 1944 | INTEGER(iwp) :: j1 !< index variable along y on coarse level |
|---|
| 1945 | INTEGER(iwp) :: j2 !< index variable along y on coarse level |
|---|
| 1946 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 1947 | INTEGER(iwp) :: l !< short for grid level |
|---|
| 1948 | INTEGER(iwp) :: jys !< index for lower local PE boundary along y |
|---|
| 1949 | INTEGER(iwp) :: jyn !< index for upper local PE boundary along y |
|---|
| 1950 | INTEGER(iwp) :: ixl !< index for lower local PE boundary along x |
|---|
| 1951 | INTEGER(iwp) :: ixr !< index for upper local PE boundary along x |
|---|
| 1952 | |
|---|
| 1953 | LOGICAL :: synchronous_exchange_save !< dummy to reset synchronous_exchange to prescribed value |
|---|
| 1954 | |
|---|
| 1955 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: temp !< temporary array on next coarser grid level |
|---|
| 1956 | |
|---|
| 1957 | synchronous_exchange_save = synchronous_exchange |
|---|
| 1958 | synchronous_exchange = .FALSE. |
|---|
| 1959 | |
|---|
| 1960 | l = grid_level |
|---|
| 1961 | |
|---|
| 1962 | ind_even_odd = even_odd_level(grid_level) |
|---|
| 1963 | |
|---|
| 1964 | ! |
|---|
| 1965 | !-- Restricted transfer only on finer levels with enough data. Restricted transfer is not possible |
|---|
| 1966 | !-- for levels smaller or equal to 'switch to PE0 levels', since array bounds do not fit. |
|---|
| 1967 | !-- Moreover, it is not possible for the coarsest grid level, since the dimensions of temp are not |
|---|
| 1968 | !-- defined. For such cases, normal exchange_horiz is called. |
|---|
| 1969 | IF ( l > 1 .AND. l > mg_switch_to_pe0_level + 1 .AND. & |
|---|
| 1970 | ( ngp_xz(grid_level) >= 900 .OR. ngp_yz(grid_level) >= 900 ) ) THEN |
|---|
| 1971 | |
|---|
| 1972 | jys = nys_mg(grid_level-1) |
|---|
| 1973 | jyn = nyn_mg(grid_level-1) |
|---|
| 1974 | ixl = nxl_mg(grid_level-1) |
|---|
| 1975 | ixr = nxr_mg(grid_level-1) |
|---|
| 1976 | ALLOCATE( temp(nzb:nzt_mg(l-1)+1,jys-1:jyn+1,ixl-1:ixr+1) ) |
|---|
| 1977 | ! |
|---|
| 1978 | !-- Handling the even k Values |
|---|
| 1979 | !-- Collecting data for the north - south exchange |
|---|
| 1980 | !-- Since only every second value has to be transfered, data are stored on the next coarser grid |
|---|
| 1981 | !-- level, because the arrays on that level have just the required size |
|---|
| 1982 | i1 = nxl_mg(grid_level-1) |
|---|
| 1983 | i2 = nxl_mg(grid_level-1) |
|---|
| 1984 | |
|---|
| 1985 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 1986 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 1987 | |
|---|
| 1988 | IF ( j == nys_mg(l) ) THEN |
|---|
| 1989 | !DIR$ IVDEP |
|---|
| 1990 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1991 | temp(k-ind_even_odd,jys,i1) = p_mg(k,j,i) |
|---|
| 1992 | ENDDO |
|---|
| 1993 | i1 = i1 + 1 |
|---|
| 1994 | |
|---|
| 1995 | ENDIF |
|---|
| 1996 | |
|---|
| 1997 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 1998 | !DIR$ IVDEP |
|---|
| 1999 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2000 | temp(k-ind_even_odd,jyn,i2) = p_mg(k,j,i) |
|---|
| 2001 | ENDDO |
|---|
| 2002 | i2 = i2 + 1 |
|---|
| 2003 | |
|---|
| 2004 | ENDIF |
|---|
| 2005 | |
|---|
| 2006 | ENDDO |
|---|
| 2007 | ENDDO |
|---|
| 2008 | |
|---|
| 2009 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2010 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2011 | |
|---|
| 2012 | IF ( j == nys_mg(l) ) THEN |
|---|
| 2013 | !DIR$ IVDEP |
|---|
| 2014 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2015 | temp(k-ind_even_odd,jys,i1) = p_mg(k,j,i) |
|---|
| 2016 | ENDDO |
|---|
| 2017 | i1 = i1 + 1 |
|---|
| 2018 | |
|---|
| 2019 | ENDIF |
|---|
| 2020 | |
|---|
| 2021 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 2022 | !DIR$ IVDEP |
|---|
| 2023 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2024 | temp(k-ind_even_odd,jyn,i2) = p_mg(k,j,i) |
|---|
| 2025 | ENDDO |
|---|
| 2026 | i2 = i2 + 1 |
|---|
| 2027 | |
|---|
| 2028 | ENDIF |
|---|
| 2029 | |
|---|
| 2030 | ENDDO |
|---|
| 2031 | ENDDO |
|---|
| 2032 | |
|---|
| 2033 | grid_level = grid_level-1 |
|---|
| 2034 | |
|---|
| 2035 | nxl = nxl_mg(grid_level) |
|---|
| 2036 | nys = nys_mg(grid_level) |
|---|
| 2037 | nxr = nxr_mg(grid_level) |
|---|
| 2038 | nyn = nyn_mg(grid_level) |
|---|
| 2039 | nzt = nzt_mg(grid_level) |
|---|
| 2040 | |
|---|
| 2041 | send_receive = 'ns' |
|---|
| 2042 | CALL exchange_horiz( temp, 1 ) |
|---|
| 2043 | |
|---|
| 2044 | grid_level = grid_level+1 |
|---|
| 2045 | |
|---|
| 2046 | i1 = nxl_mg(grid_level-1) |
|---|
| 2047 | i2 = nxl_mg(grid_level-1) |
|---|
| 2048 | |
|---|
| 2049 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 2050 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 2051 | |
|---|
| 2052 | IF ( j == nys_mg(l) ) THEN |
|---|
| 2053 | !DIR$ IVDEP |
|---|
| 2054 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2055 | p_mg(k,nyn_mg(l)+1,i) = temp(k-ind_even_odd,jyn+1,i1) |
|---|
| 2056 | ENDDO |
|---|
| 2057 | i1 = i1 + 1 |
|---|
| 2058 | |
|---|
| 2059 | ENDIF |
|---|
| 2060 | |
|---|
| 2061 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 2062 | !DIR$ IVDEP |
|---|
| 2063 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2064 | p_mg(k,nys_mg(l)-1,i) = temp(k-ind_even_odd,jys-1,i2) |
|---|
| 2065 | ENDDO |
|---|
| 2066 | i2 = i2 + 1 |
|---|
| 2067 | |
|---|
| 2068 | ENDIF |
|---|
| 2069 | |
|---|
| 2070 | ENDDO |
|---|
| 2071 | ENDDO |
|---|
| 2072 | |
|---|
| 2073 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2074 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2075 | |
|---|
| 2076 | IF ( j == nys_mg(l) ) THEN |
|---|
| 2077 | !DIR$ IVDEP |
|---|
| 2078 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2079 | p_mg(k,nyn_mg(l)+1,i) = temp(k-ind_even_odd,jyn+1,i1) |
|---|
| 2080 | ENDDO |
|---|
| 2081 | i1 = i1 + 1 |
|---|
| 2082 | |
|---|
| 2083 | ENDIF |
|---|
| 2084 | |
|---|
| 2085 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 2086 | !DIR$ IVDEP |
|---|
| 2087 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2088 | p_mg(k,nys_mg(l)-1,i) = temp(k-ind_even_odd,jys-1,i2) |
|---|
| 2089 | ENDDO |
|---|
| 2090 | i2 = i2 + 1 |
|---|
| 2091 | |
|---|
| 2092 | ENDIF |
|---|
| 2093 | |
|---|
| 2094 | ENDDO |
|---|
| 2095 | ENDDO |
|---|
| 2096 | |
|---|
| 2097 | ! |
|---|
| 2098 | !-- Collecting data for the left - right exchange. |
|---|
| 2099 | !-- Since only every second value has to be transfered, data are stored on the next coarser grid |
|---|
| 2100 | !-- level, because the arrays on that level have just the required size. |
|---|
| 2101 | j1 = nys_mg(grid_level-1) |
|---|
| 2102 | j2 = nys_mg(grid_level-1) |
|---|
| 2103 | |
|---|
| 2104 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 2105 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 2106 | |
|---|
| 2107 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2108 | !DIR$ IVDEP |
|---|
| 2109 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2110 | temp(k-ind_even_odd,j1,ixl) = p_mg(k,j,i) |
|---|
| 2111 | ENDDO |
|---|
| 2112 | j1 = j1 + 1 |
|---|
| 2113 | |
|---|
| 2114 | ENDIF |
|---|
| 2115 | |
|---|
| 2116 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2117 | !DIR$ IVDEP |
|---|
| 2118 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2119 | temp(k-ind_even_odd,j2,ixr) = p_mg(k,j,i) |
|---|
| 2120 | ENDDO |
|---|
| 2121 | j2 = j2 + 1 |
|---|
| 2122 | |
|---|
| 2123 | ENDIF |
|---|
| 2124 | |
|---|
| 2125 | ENDDO |
|---|
| 2126 | ENDDO |
|---|
| 2127 | |
|---|
| 2128 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2129 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2130 | |
|---|
| 2131 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2132 | !DIR$ IVDEP |
|---|
| 2133 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2134 | temp(k-ind_even_odd,j1,ixl) = p_mg(k,j,i) |
|---|
| 2135 | ENDDO |
|---|
| 2136 | j1 = j1 + 1 |
|---|
| 2137 | |
|---|
| 2138 | ENDIF |
|---|
| 2139 | |
|---|
| 2140 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2141 | !DIR$ IVDEP |
|---|
| 2142 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2143 | temp(k-ind_even_odd,j2,ixr) = p_mg(k,j,i) |
|---|
| 2144 | ENDDO |
|---|
| 2145 | j2 = j2 + 1 |
|---|
| 2146 | |
|---|
| 2147 | ENDIF |
|---|
| 2148 | |
|---|
| 2149 | ENDDO |
|---|
| 2150 | ENDDO |
|---|
| 2151 | |
|---|
| 2152 | grid_level = grid_level-1 |
|---|
| 2153 | send_receive = 'lr' |
|---|
| 2154 | |
|---|
| 2155 | CALL exchange_horiz( temp, 1 ) |
|---|
| 2156 | |
|---|
| 2157 | grid_level = grid_level+1 |
|---|
| 2158 | |
|---|
| 2159 | j1 = nys_mg(grid_level-1) |
|---|
| 2160 | j2 = nys_mg(grid_level-1) |
|---|
| 2161 | |
|---|
| 2162 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 2163 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 2164 | |
|---|
| 2165 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2166 | !DIR$ IVDEP |
|---|
| 2167 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2168 | p_mg(k,j,nxr_mg(l)+1) = temp(k-ind_even_odd,j1,ixr+1) |
|---|
| 2169 | ENDDO |
|---|
| 2170 | j1 = j1 + 1 |
|---|
| 2171 | |
|---|
| 2172 | ENDIF |
|---|
| 2173 | |
|---|
| 2174 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2175 | !DIR$ IVDEP |
|---|
| 2176 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2177 | p_mg(k,j,nxl_mg(l)-1) = temp(k-ind_even_odd,j2,ixl-1) |
|---|
| 2178 | ENDDO |
|---|
| 2179 | j2 = j2 + 1 |
|---|
| 2180 | |
|---|
| 2181 | ENDIF |
|---|
| 2182 | |
|---|
| 2183 | ENDDO |
|---|
| 2184 | ENDDO |
|---|
| 2185 | |
|---|
| 2186 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2187 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2188 | |
|---|
| 2189 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2190 | !DIR$ IVDEP |
|---|
| 2191 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2192 | p_mg(k,j,nxr_mg(l)+1) = temp(k-ind_even_odd,j1,ixr+1) |
|---|
| 2193 | ENDDO |
|---|
| 2194 | j1 = j1 + 1 |
|---|
| 2195 | |
|---|
| 2196 | ENDIF |
|---|
| 2197 | |
|---|
| 2198 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2199 | !DIR$ IVDEP |
|---|
| 2200 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2201 | p_mg(k,j,nxl_mg(l)-1) = temp(k-ind_even_odd,j2,ixl-1) |
|---|
| 2202 | ENDDO |
|---|
| 2203 | j2 = j2 + 1 |
|---|
| 2204 | |
|---|
| 2205 | ENDIF |
|---|
| 2206 | |
|---|
| 2207 | ENDDO |
|---|
| 2208 | ENDDO |
|---|
| 2209 | |
|---|
| 2210 | ! |
|---|
| 2211 | !-- Now handling the even k values |
|---|
| 2212 | !-- Collecting data for the north - south exchange. |
|---|
| 2213 | !-- Since only every second value has to be transfered, data are stored on the next coarser grid |
|---|
| 2214 | !-- level, because the arrays on that level have just the required size. |
|---|
| 2215 | i1 = nxl_mg(grid_level-1) |
|---|
| 2216 | i2 = nxl_mg(grid_level-1) |
|---|
| 2217 | |
|---|
| 2218 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 2219 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2220 | |
|---|
| 2221 | IF ( j == nys_mg(l) ) THEN |
|---|
| 2222 | !DIR$ IVDEP |
|---|
| 2223 | DO k = nzb+1, ind_even_odd |
|---|
| 2224 | temp(k,jys,i1) = p_mg(k,j,i) |
|---|
| 2225 | ENDDO |
|---|
| 2226 | i1 = i1 + 1 |
|---|
| 2227 | |
|---|
| 2228 | ENDIF |
|---|
| 2229 | |
|---|
| 2230 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 2231 | !DIR$ IVDEP |
|---|
| 2232 | DO k = nzb+1, ind_even_odd |
|---|
| 2233 | temp(k,jyn,i2) = p_mg(k,j,i) |
|---|
| 2234 | ENDDO |
|---|
| 2235 | i2 = i2 + 1 |
|---|
| 2236 | |
|---|
| 2237 | ENDIF |
|---|
| 2238 | |
|---|
| 2239 | ENDDO |
|---|
| 2240 | ENDDO |
|---|
| 2241 | |
|---|
| 2242 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2243 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 2244 | |
|---|
| 2245 | IF ( j == nys_mg(l) ) THEN |
|---|
| 2246 | !DIR$ IVDEP |
|---|
| 2247 | DO k = nzb+1, ind_even_odd |
|---|
| 2248 | temp(k,jys,i1) = p_mg(k,j,i) |
|---|
| 2249 | ENDDO |
|---|
| 2250 | i1 = i1 + 1 |
|---|
| 2251 | |
|---|
| 2252 | ENDIF |
|---|
| 2253 | |
|---|
| 2254 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 2255 | !DIR$ IVDEP |
|---|
| 2256 | DO k = nzb+1, ind_even_odd |
|---|
| 2257 | temp(k,jyn,i2) = p_mg(k,j,i) |
|---|
| 2258 | ENDDO |
|---|
| 2259 | i2 = i2 + 1 |
|---|
| 2260 | |
|---|
| 2261 | ENDIF |
|---|
| 2262 | |
|---|
| 2263 | ENDDO |
|---|
| 2264 | ENDDO |
|---|
| 2265 | |
|---|
| 2266 | grid_level = grid_level-1 |
|---|
| 2267 | |
|---|
| 2268 | send_receive = 'ns' |
|---|
| 2269 | CALL exchange_horiz( temp, 1 ) |
|---|
| 2270 | |
|---|
| 2271 | grid_level = grid_level+1 |
|---|
| 2272 | |
|---|
| 2273 | i1 = nxl_mg(grid_level-1) |
|---|
| 2274 | i2 = nxl_mg(grid_level-1) |
|---|
| 2275 | |
|---|
| 2276 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 2277 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2278 | |
|---|
| 2279 | IF ( j == nys_mg(l) ) THEN |
|---|
| 2280 | !DIR$ IVDEP |
|---|
| 2281 | DO k = nzb+1, ind_even_odd |
|---|
| 2282 | p_mg(k,nyn_mg(l)+1,i) = temp(k,jyn+1,i1) |
|---|
| 2283 | ENDDO |
|---|
| 2284 | i1 = i1 + 1 |
|---|
| 2285 | |
|---|
| 2286 | ENDIF |
|---|
| 2287 | |
|---|
| 2288 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 2289 | !DIR$ IVDEP |
|---|
| 2290 | DO k = nzb+1, ind_even_odd |
|---|
| 2291 | p_mg(k,nys_mg(l)-1,i) = temp(k,jys-1,i2) |
|---|
| 2292 | ENDDO |
|---|
| 2293 | i2 = i2 + 1 |
|---|
| 2294 | |
|---|
| 2295 | ENDIF |
|---|
| 2296 | |
|---|
| 2297 | ENDDO |
|---|
| 2298 | ENDDO |
|---|
| 2299 | |
|---|
| 2300 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2301 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 2302 | |
|---|
| 2303 | IF ( j == nys_mg(l) ) THEN |
|---|
| 2304 | !DIR$ IVDEP |
|---|
| 2305 | DO k = nzb+1, ind_even_odd |
|---|
| 2306 | p_mg(k,nyn_mg(l)+1,i) = temp(k,jyn+1,i1) |
|---|
| 2307 | ENDDO |
|---|
| 2308 | i1 = i1 + 1 |
|---|
| 2309 | |
|---|
| 2310 | ENDIF |
|---|
| 2311 | |
|---|
| 2312 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 2313 | !DIR$ IVDEP |
|---|
| 2314 | DO k = nzb+1, ind_even_odd |
|---|
| 2315 | p_mg(k,nys_mg(l)-1,i) = temp(k,jys-1,i2) |
|---|
| 2316 | ENDDO |
|---|
| 2317 | i2 = i2 + 1 |
|---|
| 2318 | |
|---|
| 2319 | ENDIF |
|---|
| 2320 | |
|---|
| 2321 | ENDDO |
|---|
| 2322 | ENDDO |
|---|
| 2323 | |
|---|
| 2324 | j1 = nys_mg(grid_level-1) |
|---|
| 2325 | j2 = nys_mg(grid_level-1) |
|---|
| 2326 | |
|---|
| 2327 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 2328 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2329 | |
|---|
| 2330 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2331 | !DIR$ IVDEP |
|---|
| 2332 | DO k = nzb+1, ind_even_odd |
|---|
| 2333 | temp(k,j1,ixl) = p_mg(k,j,i) |
|---|
| 2334 | ENDDO |
|---|
| 2335 | j1 = j1 + 1 |
|---|
| 2336 | |
|---|
| 2337 | ENDIF |
|---|
| 2338 | |
|---|
| 2339 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2340 | !DIR$ IVDEP |
|---|
| 2341 | DO k = nzb+1, ind_even_odd |
|---|
| 2342 | temp(k,j2,ixr) = p_mg(k,j,i) |
|---|
| 2343 | ENDDO |
|---|
| 2344 | j2 = j2 + 1 |
|---|
| 2345 | |
|---|
| 2346 | ENDIF |
|---|
| 2347 | |
|---|
| 2348 | ENDDO |
|---|
| 2349 | ENDDO |
|---|
| 2350 | |
|---|
| 2351 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2352 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 2353 | |
|---|
| 2354 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2355 | !DIR$ IVDEP |
|---|
| 2356 | DO k = nzb+1, ind_even_odd |
|---|
| 2357 | temp(k,j1,ixl) = p_mg(k,j,i) |
|---|
| 2358 | ENDDO |
|---|
| 2359 | j1 = j1 + 1 |
|---|
| 2360 | |
|---|
| 2361 | ENDIF |
|---|
| 2362 | |
|---|
| 2363 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2364 | !DIR$ IVDEP |
|---|
| 2365 | DO k = nzb+1, ind_even_odd |
|---|
| 2366 | temp(k,j2,ixr) = p_mg(k,j,i) |
|---|
| 2367 | ENDDO |
|---|
| 2368 | j2 = j2 + 1 |
|---|
| 2369 | |
|---|
| 2370 | ENDIF |
|---|
| 2371 | |
|---|
| 2372 | ENDDO |
|---|
| 2373 | ENDDO |
|---|
| 2374 | |
|---|
| 2375 | grid_level = grid_level-1 |
|---|
| 2376 | |
|---|
| 2377 | send_receive = 'lr' |
|---|
| 2378 | CALL exchange_horiz( temp, 1 ) |
|---|
| 2379 | |
|---|
| 2380 | grid_level = grid_level+1 |
|---|
| 2381 | |
|---|
| 2382 | nxl = nxl_mg(grid_level) |
|---|
| 2383 | nys = nys_mg(grid_level) |
|---|
| 2384 | nxr = nxr_mg(grid_level) |
|---|
| 2385 | nyn = nyn_mg(grid_level) |
|---|
| 2386 | nzt = nzt_mg(grid_level) |
|---|
| 2387 | |
|---|
| 2388 | j1 = nys_mg(grid_level-1) |
|---|
| 2389 | j2 = nys_mg(grid_level-1) |
|---|
| 2390 | |
|---|
| 2391 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 2392 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2393 | |
|---|
| 2394 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2395 | !DIR$ IVDEP |
|---|
| 2396 | DO k = nzb+1, ind_even_odd |
|---|
| 2397 | p_mg(k,j,nxr_mg(l)+1) = temp(k,j1,ixr+1) |
|---|
| 2398 | ENDDO |
|---|
| 2399 | j1 = j1 + 1 |
|---|
| 2400 | |
|---|
| 2401 | ENDIF |
|---|
| 2402 | |
|---|
| 2403 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2404 | !DIR$ IVDEP |
|---|
| 2405 | DO k = nzb+1, ind_even_odd |
|---|
| 2406 | p_mg(k,j,nxl_mg(l)-1) = temp(k,j2,ixl-1) |
|---|
| 2407 | ENDDO |
|---|
| 2408 | j2 = j2 + 1 |
|---|
| 2409 | |
|---|
| 2410 | ENDIF |
|---|
| 2411 | |
|---|
| 2412 | ENDDO |
|---|
| 2413 | ENDDO |
|---|
| 2414 | |
|---|
| 2415 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2416 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 2417 | |
|---|
| 2418 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2419 | !DIR$ IVDEP |
|---|
| 2420 | DO k = nzb+1, ind_even_odd |
|---|
| 2421 | p_mg(k,j,nxr_mg(l)+1) = temp(k,j1,ixr+1) |
|---|
| 2422 | ENDDO |
|---|
| 2423 | j1 = j1 + 1 |
|---|
| 2424 | |
|---|
| 2425 | ENDIF |
|---|
| 2426 | |
|---|
| 2427 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2428 | !DIR$ IVDEP |
|---|
| 2429 | DO k = nzb+1, ind_even_odd |
|---|
| 2430 | p_mg(k,j,nxl_mg(l)-1) = temp(k,j2,ixl-1) |
|---|
| 2431 | ENDDO |
|---|
| 2432 | j2 = j2 + 1 |
|---|
| 2433 | |
|---|
| 2434 | ENDIF |
|---|
| 2435 | |
|---|
| 2436 | ENDDO |
|---|
| 2437 | ENDDO |
|---|
| 2438 | |
|---|
| 2439 | DEALLOCATE( temp ) |
|---|
| 2440 | |
|---|
| 2441 | ELSE |
|---|
| 2442 | |
|---|
| 2443 | ! |
|---|
| 2444 | !-- Standard horizontal ghost boundary exchange for small coarse grid levels, where the transfer |
|---|
| 2445 | !-- time is latency bound |
|---|
| 2446 | CALL exchange_horiz( p_mg, 1 ) |
|---|
| 2447 | |
|---|
| 2448 | ENDIF |
|---|
| 2449 | |
|---|
| 2450 | ! |
|---|
| 2451 | !-- Reset values to default PALM setup |
|---|
| 2452 | synchronous_exchange = synchronous_exchange_save |
|---|
| 2453 | send_receive = 'al' |
|---|
| 2454 | #else |
|---|
| 2455 | |
|---|
| 2456 | ! |
|---|
| 2457 | !-- Next line is to avoid compiler error due to unused dummy argument |
|---|
| 2458 | IF ( color == 1234567 ) RETURN |
|---|
| 2459 | ! |
|---|
| 2460 | !-- Standard horizontal ghost boundary exchange for small coarse grid levels, where the transfer |
|---|
| 2461 | !-- time is latency bound. |
|---|
| 2462 | CALL exchange_horiz( p_mg, 1 ) |
|---|
| 2463 | #endif |
|---|
| 2464 | |
|---|
| 2465 | END SUBROUTINE special_exchange_horiz |
|---|
| 2466 | |
|---|
| 2467 | END MODULE poismg_mod |
|---|
