| 1 | !> @file poismg.f90 |
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| 2 | !------------------------------------------------------------------------------! |
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| 3 | ! This file is part of the PALM model system. |
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| 4 | ! |
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| 5 | ! PALM is free software: you can redistribute it and/or modify it under the |
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| 6 | ! terms of the GNU General Public License as published by the Free Software |
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| 7 | ! Foundation, either version 3 of the License, or (at your option) any later |
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| 8 | ! version. |
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| 9 | ! |
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| 10 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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| 11 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
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| 12 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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| 13 | ! |
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| 14 | ! You should have received a copy of the GNU General Public License along with |
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| 15 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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| 16 | ! |
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| 17 | ! Copyright 1997-2020 Leibniz Universitaet Hannover |
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| 18 | !------------------------------------------------------------------------------! |
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| 19 | ! |
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| 20 | ! Current revisions: |
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| 21 | ! ----------------- |
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| 22 | ! |
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| 23 | ! |
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| 24 | ! Former revisions: |
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| 25 | ! ----------------- |
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| 26 | ! $Id: poismg_mod.f90 4360 2020-01-07 11:25:50Z knoop $ |
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| 27 | ! Corrected "Former revisions" section |
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| 28 | ! |
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| 29 | ! 3725 2019-02-07 10:11:02Z raasch |
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| 30 | ! unused subroutine removed |
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| 31 | ! |
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| 32 | ! 3655 2019-01-07 16:51:22Z knoop |
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| 33 | ! unnecessary check eliminated |
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| 34 | ! |
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| 35 | ! Following optimisations have been made: |
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| 36 | ! - vectorisation (for Intel-CPUs) of the red-black algorithm by resorting |
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| 37 | ! array elements with even and odd indices |
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| 38 | ! - explicit boundary conditions for building walls removed (solver is |
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| 39 | ! running through the buildings |
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| 40 | ! - reduced data transfer in case of ghost point exchange, because only |
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| 41 | ! "red" or "black" data points need to be exchanged. This is not applied |
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| 42 | ! for coarser grid levels, since for then the transfer time is latency bound |
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| 43 | ! |
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| 44 | ! |
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| 45 | ! Description: |
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| 46 | ! ------------ |
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| 47 | !> Solves the Poisson equation for the perturbation pressure with a multigrid |
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| 48 | !> V- or W-Cycle scheme. |
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| 49 | !> |
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| 50 | !> This multigrid method was originally developed for PALM by Joerg Uhlenbrock, |
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| 51 | !> September 2000 - July 2001. It has been optimised for speed by Klaus |
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| 52 | !> Ketelsen in November 2014. |
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| 53 | !> |
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| 54 | !> @attention Loop unrolling and cache optimization in SOR-Red/Black method |
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| 55 | !> still does not give the expected speedup! |
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| 56 | !> |
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| 57 | !> @todo Further work required. |
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| 58 | !------------------------------------------------------------------------------! |
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| 59 | MODULE poismg_mod |
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| 60 | |
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| 61 | USE control_parameters, & |
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| 62 | ONLY: bc_dirichlet_l, bc_dirichlet_n, bc_dirichlet_r, & |
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| 63 | bc_dirichlet_s, bc_radiation_l, bc_radiation_n, bc_radiation_r, & |
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| 64 | bc_radiation_s, grid_level, nesting_offline |
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| 65 | |
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| 66 | USE cpulog, & |
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| 67 | ONLY: cpu_log, log_point_s |
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| 68 | |
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| 69 | USE kinds |
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| 70 | |
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| 71 | USE pegrid |
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| 72 | |
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| 73 | PRIVATE |
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| 74 | |
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| 75 | INTEGER, SAVE :: ind_even_odd !< border index between even and odd k index |
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| 76 | INTEGER, DIMENSION(:), SAVE, ALLOCATABLE :: even_odd_level !< stores ind_even_odd for all MG levels |
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| 77 | |
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| 78 | REAL(wp), DIMENSION(:,:), SAVE, ALLOCATABLE :: f1_mg_b, f2_mg_b, f3_mg_b !< blocked version of f1_mg ... |
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| 79 | |
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| 80 | INTERFACE poismg |
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| 81 | MODULE PROCEDURE poismg |
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| 82 | END INTERFACE poismg |
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| 83 | |
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| 84 | INTERFACE sort_k_to_even_odd_blocks |
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| 85 | MODULE PROCEDURE sort_k_to_even_odd_blocks |
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| 86 | ! MODULE PROCEDURE sort_k_to_even_odd_blocks_int |
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| 87 | MODULE PROCEDURE sort_k_to_even_odd_blocks_1d |
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| 88 | END INTERFACE sort_k_to_even_odd_blocks |
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| 89 | |
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| 90 | PUBLIC poismg |
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| 91 | |
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| 92 | CONTAINS |
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| 93 | |
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| 94 | !------------------------------------------------------------------------------! |
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| 95 | ! Description: |
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| 96 | ! ------------ |
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| 97 | !> Solves the Poisson equation for the perturbation pressure with a multigrid |
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| 98 | !> V- or W-Cycle scheme. |
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| 99 | !------------------------------------------------------------------------------! |
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| 100 | SUBROUTINE poismg( r ) |
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| 101 | |
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| 102 | USE arrays_3d, & |
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| 103 | ONLY: d, p_loc |
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| 104 | |
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| 105 | USE control_parameters, & |
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| 106 | ONLY: bc_lr_cyc, bc_ns_cyc, gathered_size, grid_level, & |
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| 107 | grid_level_count, ibc_p_t, & |
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| 108 | maximum_grid_level, message_string, mgcycles, mg_cycles, & |
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| 109 | mg_switch_to_pe0_level, residual_limit, subdomain_size |
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| 110 | |
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| 111 | USE cpulog, & |
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| 112 | ONLY: cpu_log, log_point_s |
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| 113 | |
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| 114 | USE indices, & |
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| 115 | ONLY: nxl, nxlg, nxl_mg, nxr, nxrg, nxr_mg, nys, nysg, nys_mg, nyn,& |
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| 116 | nyng, nyn_mg, nzb, nzt, nzt_mg |
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| 117 | |
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| 118 | IMPLICIT NONE |
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| 119 | |
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| 120 | REAL(wp) :: maxerror !< |
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| 121 | REAL(wp) :: maximum_mgcycles !< |
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| 122 | REAL(wp) :: residual_norm !< |
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| 123 | |
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| 124 | REAL(wp), DIMENSION(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) :: r !< |
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| 125 | |
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| 126 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: p3 !< |
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| 127 | |
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| 128 | |
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| 129 | CALL cpu_log( log_point_s(29), 'poismg', 'start' ) |
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| 130 | ! |
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| 131 | !-- Initialize arrays and variables used in this subroutine |
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| 132 | |
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| 133 | !-- If the number of grid points of the gathered grid, which is collected |
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| 134 | !-- on PE0, is larger than the number of grid points of an PE, than array |
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| 135 | !-- p3 will be enlarged. |
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| 136 | IF ( gathered_size > subdomain_size ) THEN |
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| 137 | ALLOCATE( p3(nzb:nzt_mg(mg_switch_to_pe0_level)+1,nys_mg( & |
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| 138 | mg_switch_to_pe0_level)-1:nyn_mg(mg_switch_to_pe0_level)+1,& |
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| 139 | nxl_mg(mg_switch_to_pe0_level)-1:nxr_mg( & |
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| 140 | mg_switch_to_pe0_level)+1) ) |
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| 141 | ELSE |
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| 142 | ALLOCATE ( p3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
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| 143 | ENDIF |
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| 144 | |
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| 145 | p3 = 0.0_wp |
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| 146 | |
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| 147 | |
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| 148 | ! |
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| 149 | !-- Ghost boundaries have to be added to divergence array. |
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| 150 | !-- Exchange routine needs to know the grid level! |
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| 151 | grid_level = maximum_grid_level |
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| 152 | CALL exchange_horiz( d, 1) |
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| 153 | ! |
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| 154 | !-- Set bottom and top boundary conditions |
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| 155 | d(nzb,:,:) = d(nzb+1,:,:) |
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| 156 | IF ( ibc_p_t == 1 ) d(nzt+1,:,: ) = d(nzt,:,:) |
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| 157 | ! |
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| 158 | !-- Set lateral boundary conditions in non-cyclic case |
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| 159 | IF ( .NOT. bc_lr_cyc ) THEN |
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| 160 | IF ( bc_dirichlet_l .OR. bc_radiation_l ) & |
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| 161 | d(:,:,nxl-1) = d(:,:,nxl) |
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| 162 | IF ( bc_dirichlet_r .OR. bc_radiation_r ) & |
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| 163 | d(:,:,nxr+1) = d(:,:,nxr) |
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| 164 | ENDIF |
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| 165 | IF ( .NOT. bc_ns_cyc ) THEN |
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| 166 | IF ( bc_dirichlet_n .OR. bc_radiation_n ) & |
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| 167 | d(:,nyn+1,:) = d(:,nyn,:) |
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| 168 | IF ( bc_dirichlet_s .OR. bc_radiation_s ) & |
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| 169 | d(:,nys-1,:) = d(:,nys,:) |
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| 170 | ENDIF |
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| 171 | ! |
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| 172 | !-- Initiation of the multigrid scheme. Does n cycles until the |
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| 173 | !-- residual is smaller than the given limit. The accuracy of the solution |
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| 174 | !-- of the poisson equation will increase with the number of cycles. |
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| 175 | !-- If the number of cycles is preset by the user, this number will be |
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| 176 | !-- carried out regardless of the accuracy. |
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| 177 | grid_level_count = 0 |
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| 178 | mgcycles = 0 |
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| 179 | IF ( mg_cycles == -1 ) THEN |
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| 180 | maximum_mgcycles = 0 |
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| 181 | residual_norm = 1.0_wp |
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| 182 | ELSE |
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| 183 | maximum_mgcycles = mg_cycles |
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| 184 | residual_norm = 0.0_wp |
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| 185 | ENDIF |
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| 186 | |
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| 187 | ! |
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| 188 | !-- Initial settings for sorting k-dimension from sequential order (alternate |
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| 189 | !-- even/odd) into blocks of even and odd or vice versa |
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| 190 | CALL init_even_odd_blocks |
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| 191 | |
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| 192 | ! |
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| 193 | !-- Sort input arrays in even/odd blocks along k-dimension |
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| 194 | CALL sort_k_to_even_odd_blocks( d, grid_level ) |
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| 195 | CALL sort_k_to_even_odd_blocks( p_loc, grid_level ) |
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| 196 | |
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| 197 | ! |
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| 198 | !-- The complete multigrid cycles are running in block mode, i.e. over |
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| 199 | !-- seperate data blocks of even and odd indices |
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| 200 | DO WHILE ( residual_norm > residual_limit .OR. & |
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| 201 | mgcycles < maximum_mgcycles ) |
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| 202 | |
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| 203 | CALL next_mg_level( d, p_loc, p3, r) |
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| 204 | |
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| 205 | ! |
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| 206 | !-- Calculate the residual if the user has not preset the number of |
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| 207 | !-- cycles to be performed |
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| 208 | IF ( maximum_mgcycles == 0 ) THEN |
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| 209 | CALL resid( d, p_loc, r ) |
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| 210 | maxerror = SUM( r(nzb+1:nzt,nys:nyn,nxl:nxr)**2 ) |
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| 211 | |
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| 212 | #if defined( __parallel ) |
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| 213 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
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| 214 | CALL MPI_ALLREDUCE( maxerror, residual_norm, 1, MPI_REAL, & |
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| 215 | MPI_SUM, comm2d, ierr) |
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| 216 | #else |
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| 217 | residual_norm = maxerror |
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| 218 | #endif |
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| 219 | residual_norm = SQRT( residual_norm ) |
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| 220 | ENDIF |
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| 221 | |
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| 222 | mgcycles = mgcycles + 1 |
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| 223 | |
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| 224 | ! |
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| 225 | !-- If the user has not limited the number of cycles, stop the run in case |
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| 226 | !-- of insufficient convergence |
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| 227 | IF ( mgcycles > 1000 .AND. mg_cycles == -1 ) THEN |
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| 228 | message_string = 'no sufficient convergence within 1000 cycles' |
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| 229 | CALL message( 'poismg', 'PA0283', 1, 2, 0, 6, 0 ) |
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| 230 | ENDIF |
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| 231 | |
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| 232 | ENDDO |
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| 233 | |
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| 234 | DEALLOCATE( p3 ) |
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| 235 | ! |
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| 236 | !-- Result has to be sorted back from even/odd blocks to sequential order |
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| 237 | CALL sort_k_to_sequential( p_loc ) |
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| 238 | ! |
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| 239 | !-- Unset the grid level. Variable is used to determine the MPI datatypes for |
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| 240 | !-- ghost point exchange |
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| 241 | grid_level = 0 |
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| 242 | |
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| 243 | CALL cpu_log( log_point_s(29), 'poismg', 'stop' ) |
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| 244 | |
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| 245 | END SUBROUTINE poismg |
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| 246 | |
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| 247 | |
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| 248 | !------------------------------------------------------------------------------! |
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| 249 | ! Description: |
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| 250 | ! ------------ |
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| 251 | !> Computes the residual of the perturbation pressure. |
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| 252 | !------------------------------------------------------------------------------! |
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| 253 | SUBROUTINE resid( f_mg, p_mg, r ) |
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| 254 | |
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| 255 | |
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| 256 | USE arrays_3d, & |
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| 257 | ONLY: rho_air_mg |
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| 258 | |
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| 259 | USE control_parameters, & |
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| 260 | ONLY: bc_lr_cyc, bc_ns_cyc, ibc_p_b, ibc_p_t |
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| 261 | USE grid_variables, & |
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| 262 | ONLY: ddx2_mg, ddy2_mg |
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| 263 | |
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| 264 | USE indices, & |
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| 265 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
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| 266 | |
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| 267 | IMPLICIT NONE |
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| 268 | |
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| 269 | INTEGER(iwp) :: i !< index variable along x |
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| 270 | INTEGER(iwp) :: j !< index variable along y |
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| 271 | INTEGER(iwp) :: k !< index variable along z |
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| 272 | INTEGER(iwp) :: l !< index indicating grid level |
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| 273 | INTEGER(iwp) :: km1 !< index variable along z dimension (k-1) |
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| 274 | INTEGER(iwp) :: kp1 !< index variable along z dimension (k+1) |
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| 275 | |
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| 276 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
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| 277 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
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| 278 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: f_mg !< velocity divergence |
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| 279 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
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| 280 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
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| 281 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: p_mg !< perturbation pressure |
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| 282 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
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| 283 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
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| 284 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: r !< residuum of perturbation pressure |
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| 285 | |
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| 286 | ! |
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| 287 | !-- Calculate the residual |
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| 288 | l = grid_level |
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| 289 | |
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| 290 | CALL cpu_log( log_point_s(53), 'resid', 'start' ) |
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| 291 | !$OMP PARALLEL PRIVATE (i,j,k,km1,kp1) |
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| 292 | !$OMP DO |
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| 293 | DO i = nxl_mg(l), nxr_mg(l) |
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| 294 | DO j = nys_mg(l), nyn_mg(l) |
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| 295 | !DIR$ IVDEP |
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| 296 | DO k = ind_even_odd+1, nzt_mg(l) |
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| 297 | km1 = k-ind_even_odd-1 |
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| 298 | kp1 = k-ind_even_odd |
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| 299 | r(k,j,i) = f_mg(k,j,i) & |
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| 300 | - rho_air_mg(k,l) * ddx2_mg(l) * & |
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| 301 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
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| 302 | - rho_air_mg(k,l) * ddy2_mg(l) * & |
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| 303 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
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| 304 | - f2_mg_b(k,l) * p_mg(kp1,j,i) & |
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| 305 | - f3_mg_b(k,l) * p_mg(km1,j,i) & |
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| 306 | + f1_mg_b(k,l) * p_mg(k,j,i) |
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| 307 | ENDDO |
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| 308 | !DIR$ IVDEP |
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| 309 | DO k = nzb+1, ind_even_odd |
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| 310 | km1 = k+ind_even_odd |
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| 311 | kp1 = k+ind_even_odd+1 |
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| 312 | r(k,j,i) = f_mg(k,j,i) & |
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| 313 | - rho_air_mg(k,l) * ddx2_mg(l) * & |
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| 314 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
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| 315 | - rho_air_mg(k,l) * ddy2_mg(l) * & |
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| 316 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
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| 317 | - f2_mg_b(k,l) * p_mg(kp1,j,i) & |
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| 318 | - f3_mg_b(k,l) * p_mg(km1,j,i) & |
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| 319 | + f1_mg_b(k,l) * p_mg(k,j,i) |
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| 320 | ENDDO |
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| 321 | ENDDO |
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| 322 | ENDDO |
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| 323 | !$OMP END PARALLEL |
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| 324 | ! |
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| 325 | !-- Horizontal boundary conditions |
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| 326 | CALL exchange_horiz( r, 1) |
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| 327 | |
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| 328 | IF ( .NOT. bc_lr_cyc ) THEN |
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| 329 | IF ( bc_dirichlet_l .OR. bc_radiation_l ) THEN |
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| 330 | r(:,:,nxl_mg(l)-1) = r(:,:,nxl_mg(l)) |
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| 331 | ENDIF |
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| 332 | IF ( bc_dirichlet_r .OR. bc_radiation_r ) THEN |
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| 333 | r(:,:,nxr_mg(l)+1) = r(:,:,nxr_mg(l)) |
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| 334 | ENDIF |
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| 335 | ENDIF |
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| 336 | |
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| 337 | IF ( .NOT. bc_ns_cyc ) THEN |
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| 338 | IF ( bc_dirichlet_n .OR. bc_radiation_n ) THEN |
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| 339 | r(:,nyn_mg(l)+1,:) = r(:,nyn_mg(l),:) |
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| 340 | ENDIF |
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| 341 | IF ( bc_dirichlet_s .OR. bc_radiation_s ) THEN |
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| 342 | r(:,nys_mg(l)-1,:) = r(:,nys_mg(l),:) |
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| 343 | ENDIF |
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| 344 | ENDIF |
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| 345 | |
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| 346 | ! |
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| 347 | !-- Boundary conditions at bottom and top of the domain. Points may be within |
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| 348 | !-- buildings, but that doesn't matter. |
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| 349 | IF ( ibc_p_b == 1 ) THEN |
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| 350 | ! |
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| 351 | !-- equivalent to r(nzb,:,: ) = r(nzb+1,:,:) |
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| 352 | r(nzb,:,: ) = r(ind_even_odd+1,:,:) |
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| 353 | ELSE |
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| 354 | r(nzb,:,: ) = 0.0_wp |
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| 355 | ENDIF |
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| 356 | |
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| 357 | IF ( ibc_p_t == 1 ) THEN |
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| 358 | ! |
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| 359 | !-- equivalent to r(nzt_mg(l)+1,:,: ) = r(nzt_mg(l),:,:) |
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| 360 | r(nzt_mg(l)+1,:,: ) = r(ind_even_odd,:,:) |
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| 361 | ELSE |
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| 362 | r(nzt_mg(l)+1,:,: ) = 0.0_wp |
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| 363 | ENDIF |
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| 364 | |
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| 365 | CALL cpu_log( log_point_s(53), 'resid', 'stop' ) |
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| 366 | |
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| 367 | END SUBROUTINE resid |
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| 368 | |
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| 369 | |
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| 370 | !------------------------------------------------------------------------------! |
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| 371 | ! Description: |
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| 372 | ! ------------ |
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| 373 | !> Interpolates the residual on the next coarser grid with "full weighting" |
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| 374 | !> scheme |
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| 375 | !------------------------------------------------------------------------------! |
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| 376 | SUBROUTINE restrict( f_mg, r ) |
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| 377 | |
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| 378 | |
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| 379 | USE control_parameters, & |
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| 380 | ONLY: bc_lr_cyc, bc_ns_cyc, ibc_p_b, ibc_p_t |
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| 381 | |
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| 382 | USE indices, & |
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| 383 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
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| 384 | |
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| 385 | IMPLICIT NONE |
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| 386 | |
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| 387 | INTEGER(iwp) :: i !< index variable along x on finer grid |
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| 388 | INTEGER(iwp) :: ic !< index variable along x on coarser grid |
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| 389 | INTEGER(iwp) :: j !< index variable along y on finer grid |
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| 390 | INTEGER(iwp) :: jc !< index variable along y on coarser grid |
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| 391 | INTEGER(iwp) :: k !< index variable along z on finer grid |
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| 392 | INTEGER(iwp) :: kc !< index variable along z on coarser grid |
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| 393 | INTEGER(iwp) :: l !< index indicating finer grid level |
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| 394 | INTEGER(iwp) :: km1 !< index variable along z dimension (k-1 on finer level) |
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| 395 | INTEGER(iwp) :: kp1 !< index variable along z dimension (k+1 on finer level) |
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| 396 | |
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| 397 | |
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| 398 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
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| 399 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
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| 400 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: & |
|---|
| 401 | f_mg !< Residual on coarser grid level |
|---|
| 402 | |
|---|
| 403 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level+1)+1, & |
|---|
| 404 | nys_mg(grid_level+1)-1:nyn_mg(grid_level+1)+1, & |
|---|
| 405 | nxl_mg(grid_level+1)-1:nxr_mg(grid_level+1)+1) :: & |
|---|
| 406 | r !< Residual on finer grid level |
|---|
| 407 | |
|---|
| 408 | ! |
|---|
| 409 | !-- Interpolate the residual |
|---|
| 410 | l = grid_level |
|---|
| 411 | |
|---|
| 412 | CALL cpu_log( log_point_s(54), 'restrict', 'start' ) |
|---|
| 413 | ! |
|---|
| 414 | !-- No wall treatment |
|---|
| 415 | !$OMP PARALLEL PRIVATE (i,j,k,ic,jc,kc,km1,kp1) |
|---|
| 416 | !$OMP DO SCHEDULE( STATIC ) |
|---|
| 417 | DO ic = nxl_mg(l), nxr_mg(l) |
|---|
| 418 | i = 2*ic |
|---|
| 419 | DO jc = nys_mg(l), nyn_mg(l) |
|---|
| 420 | ! |
|---|
| 421 | !-- Calculation for the first point along k |
|---|
| 422 | j = 2*jc |
|---|
| 423 | ! |
|---|
| 424 | !-- Calculation for the other points along k |
|---|
| 425 | !DIR$ IVDEP |
|---|
| 426 | DO k = ind_even_odd+1, nzt_mg(l+1) ! Fine grid at this point |
|---|
| 427 | km1 = k-ind_even_odd-1 |
|---|
| 428 | kp1 = k-ind_even_odd |
|---|
| 429 | kc = k-ind_even_odd ! Coarse grid index |
|---|
| 430 | |
|---|
| 431 | f_mg(kc,jc,ic) = 1.0_wp / 64.0_wp * ( & |
|---|
| 432 | 8.0_wp * r(k,j,i) & |
|---|
| 433 | + 4.0_wp * ( r(k,j,i-1) + r(k,j,i+1) + & |
|---|
| 434 | r(k,j+1,i) + r(k,j-1,i) ) & |
|---|
| 435 | + 2.0_wp * ( r(k,j-1,i-1) + r(k,j+1,i-1) + & |
|---|
| 436 | r(k,j-1,i+1) + r(k,j+1,i+1) ) & |
|---|
| 437 | + 4.0_wp * r(km1,j,i) & |
|---|
| 438 | + 2.0_wp * ( r(km1,j,i-1) + r(km1,j,i+1) + & |
|---|
| 439 | r(km1,j+1,i) + r(km1,j-1,i) ) & |
|---|
| 440 | + ( r(km1,j-1,i-1) + r(km1,j+1,i-1) + & |
|---|
| 441 | r(km1,j-1,i+1) + r(km1,j+1,i+1) ) & |
|---|
| 442 | + 4.0_wp * r(kp1,j,i) & |
|---|
| 443 | + 2.0_wp * ( r(kp1,j,i-1) + r(kp1,j,i+1) + & |
|---|
| 444 | r(kp1,j+1,i) + r(kp1,j-1,i) ) & |
|---|
| 445 | + ( r(kp1,j-1,i-1) + r(kp1,j+1,i-1) + & |
|---|
| 446 | r(kp1,j-1,i+1) + r(kp1,j+1,i+1) ) & |
|---|
| 447 | ) |
|---|
| 448 | ENDDO |
|---|
| 449 | ENDDO |
|---|
| 450 | ENDDO |
|---|
| 451 | !$OMP ENDDO |
|---|
| 452 | !$OMP END PARALLEL |
|---|
| 453 | |
|---|
| 454 | ! |
|---|
| 455 | !-- Ghost point exchange |
|---|
| 456 | CALL exchange_horiz( f_mg, 1) |
|---|
| 457 | ! |
|---|
| 458 | !-- Horizontal boundary conditions |
|---|
| 459 | IF ( .NOT. bc_lr_cyc ) THEN |
|---|
| 460 | IF ( bc_dirichlet_l .OR. bc_radiation_l ) THEN |
|---|
| 461 | f_mg(:,:,nxl_mg(l)-1) = f_mg(:,:,nxl_mg(l)) |
|---|
| 462 | ENDIF |
|---|
| 463 | IF ( bc_dirichlet_r .OR. bc_radiation_r ) THEN |
|---|
| 464 | f_mg(:,:,nxr_mg(l)+1) = f_mg(:,:,nxr_mg(l)) |
|---|
| 465 | ENDIF |
|---|
| 466 | ENDIF |
|---|
| 467 | |
|---|
| 468 | IF ( .NOT. bc_ns_cyc ) THEN |
|---|
| 469 | IF ( bc_dirichlet_n .OR. bc_radiation_n ) THEN |
|---|
| 470 | f_mg(:,nyn_mg(l)+1,:) = f_mg(:,nyn_mg(l),:) |
|---|
| 471 | ENDIF |
|---|
| 472 | IF ( bc_dirichlet_s .OR. bc_radiation_s ) THEN |
|---|
| 473 | f_mg(:,nys_mg(l)-1,:) = f_mg(:,nys_mg(l),:) |
|---|
| 474 | ENDIF |
|---|
| 475 | ENDIF |
|---|
| 476 | |
|---|
| 477 | ! |
|---|
| 478 | !-- Boundary conditions at bottom and top of the domain. |
|---|
| 479 | !-- These points are not handled by the above loop. Points may be within |
|---|
| 480 | !-- buildings, but that doesn't matter. Remark: f_mg is ordered sequentielly |
|---|
| 481 | !-- after interpolation on coarse grid (is ordered in odd-even blocks further |
|---|
| 482 | !-- below). |
|---|
| 483 | IF ( ibc_p_b == 1 ) THEN |
|---|
| 484 | f_mg(nzb,:,: ) = f_mg(nzb+1,:,:) |
|---|
| 485 | ELSE |
|---|
| 486 | f_mg(nzb,:,: ) = 0.0_wp |
|---|
| 487 | ENDIF |
|---|
| 488 | |
|---|
| 489 | IF ( ibc_p_t == 1 ) THEN |
|---|
| 490 | f_mg(nzt_mg(l)+1,:,: ) = f_mg(nzt_mg(l),:,:) |
|---|
| 491 | ELSE |
|---|
| 492 | f_mg(nzt_mg(l)+1,:,: ) = 0.0_wp |
|---|
| 493 | ENDIF |
|---|
| 494 | |
|---|
| 495 | CALL cpu_log( log_point_s(54), 'restrict', 'stop' ) |
|---|
| 496 | ! |
|---|
| 497 | !-- Since residual is in sequential order after interpolation, an additional |
|---|
| 498 | !-- sorting in odd-even blocks along z dimension is required at this point. |
|---|
| 499 | CALL sort_k_to_even_odd_blocks( f_mg , l) |
|---|
| 500 | |
|---|
| 501 | END SUBROUTINE restrict |
|---|
| 502 | |
|---|
| 503 | |
|---|
| 504 | !------------------------------------------------------------------------------! |
|---|
| 505 | ! Description: |
|---|
| 506 | ! ------------ |
|---|
| 507 | !> Interpolates the correction of the perturbation pressure |
|---|
| 508 | !> to the next finer grid. |
|---|
| 509 | !------------------------------------------------------------------------------! |
|---|
| 510 | SUBROUTINE prolong( p, temp ) |
|---|
| 511 | |
|---|
| 512 | |
|---|
| 513 | USE control_parameters, & |
|---|
| 514 | ONLY: bc_lr_cyc, bc_ns_cyc, ibc_p_b, ibc_p_t |
|---|
| 515 | USE indices, & |
|---|
| 516 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
|---|
| 517 | |
|---|
| 518 | IMPLICIT NONE |
|---|
| 519 | |
|---|
| 520 | INTEGER(iwp) :: i !< index variable along x on coarser grid level |
|---|
| 521 | INTEGER(iwp) :: j !< index variable along y on coarser grid level |
|---|
| 522 | INTEGER(iwp) :: k !< index variable along z on coarser grid level |
|---|
| 523 | INTEGER(iwp) :: l !< index indicating finer grid level |
|---|
| 524 | INTEGER(iwp) :: kp1 !< index variable along z |
|---|
| 525 | INTEGER(iwp) :: ke !< index for prolog even |
|---|
| 526 | INTEGER(iwp) :: ko !< index for prolog odd |
|---|
| 527 | |
|---|
| 528 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level-1)+1, & |
|---|
| 529 | nys_mg(grid_level-1)-1:nyn_mg(grid_level-1)+1, & |
|---|
| 530 | nxl_mg(grid_level-1)-1:nxr_mg(grid_level-1)+1 ) :: & |
|---|
| 531 | p !< perturbation pressure on coarser grid level |
|---|
| 532 | |
|---|
| 533 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 534 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 535 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: & |
|---|
| 536 | temp !< perturbation pressure on finer grid level |
|---|
| 537 | |
|---|
| 538 | |
|---|
| 539 | CALL cpu_log( log_point_s(55), 'prolong', 'start' ) |
|---|
| 540 | |
|---|
| 541 | ! |
|---|
| 542 | !-- First, store elements of the coarser grid on the next finer grid |
|---|
| 543 | l = grid_level |
|---|
| 544 | ind_even_odd = even_odd_level(grid_level-1) |
|---|
| 545 | |
|---|
| 546 | !$OMP PARALLEL PRIVATE (i,j,k,kp1,ke,ko) |
|---|
| 547 | !$OMP DO |
|---|
| 548 | DO i = nxl_mg(l-1), nxr_mg(l-1) |
|---|
| 549 | DO j = nys_mg(l-1), nyn_mg(l-1) |
|---|
| 550 | |
|---|
| 551 | !DIR$ IVDEP |
|---|
| 552 | DO k = ind_even_odd+1, nzt_mg(l-1) |
|---|
| 553 | kp1 = k - ind_even_odd |
|---|
| 554 | ke = 2 * ( k-ind_even_odd - 1 ) + 1 |
|---|
| 555 | ko = 2 * k - 1 |
|---|
| 556 | ! |
|---|
| 557 | !-- Points of the coarse grid are directly stored on the next finer |
|---|
| 558 | !-- grid |
|---|
| 559 | temp(ko,2*j,2*i) = p(k,j,i) |
|---|
| 560 | ! |
|---|
| 561 | !-- Points between two coarse-grid points |
|---|
| 562 | temp(ko,2*j,2*i+1) = 0.5_wp * ( p(k,j,i) + p(k,j,i+1) ) |
|---|
| 563 | temp(ko,2*j+1,2*i) = 0.5_wp * ( p(k,j,i) + p(k,j+1,i) ) |
|---|
| 564 | temp(ke,2*j,2*i) = 0.5_wp * ( p(k,j,i) + p(kp1,j,i) ) |
|---|
| 565 | ! |
|---|
| 566 | !-- Points in the center of the planes stretched by four points |
|---|
| 567 | !-- of the coarse grid cube |
|---|
| 568 | temp(ko,2*j+1,2*i+1) = 0.25_wp * ( p(k,j,i) + p(k,j,i+1) + & |
|---|
| 569 | p(k,j+1,i) + p(k,j+1,i+1) ) |
|---|
| 570 | temp(ke,2*j,2*i+1) = 0.25_wp * ( p(k,j,i) + p(k,j,i+1) + & |
|---|
| 571 | p(kp1,j,i) + p(kp1,j,i+1) ) |
|---|
| 572 | temp(ke,2*j+1,2*i) = 0.25_wp * ( p(k,j,i) + p(k,j+1,i) + & |
|---|
| 573 | p(kp1,j,i) + p(kp1,j+1,i) ) |
|---|
| 574 | ! |
|---|
| 575 | !-- Points in the middle of coarse grid cube |
|---|
| 576 | temp(ke,2*j+1,2*i+1) = 0.125_wp * & |
|---|
| 577 | ( p(k,j,i) + p(k,j,i+1) + & |
|---|
| 578 | p(k,j+1,i) + p(k,j+1,i+1) + & |
|---|
| 579 | p(kp1,j,i) + p(kp1,j,i+1) + & |
|---|
| 580 | p(kp1,j+1,i) + p(kp1,j+1,i+1) ) |
|---|
| 581 | |
|---|
| 582 | ENDDO |
|---|
| 583 | |
|---|
| 584 | !DIR$ IVDEP |
|---|
| 585 | DO k = nzb+1, ind_even_odd |
|---|
| 586 | kp1 = k + ind_even_odd + 1 |
|---|
| 587 | ke = 2 * k |
|---|
| 588 | ko = 2 * ( k + ind_even_odd ) |
|---|
| 589 | ! |
|---|
| 590 | !-- Points of the coarse grid are directly stored on the next finer |
|---|
| 591 | !-- grid |
|---|
| 592 | temp(ko,2*j,2*i) = p(k,j,i) |
|---|
| 593 | ! |
|---|
| 594 | !-- Points between two coarse-grid points |
|---|
| 595 | temp(ko,2*j,2*i+1) = 0.5_wp * ( p(k,j,i) + p(k,j,i+1) ) |
|---|
| 596 | temp(ko,2*j+1,2*i) = 0.5_wp * ( p(k,j,i) + p(k,j+1,i) ) |
|---|
| 597 | temp(ke,2*j,2*i) = 0.5_wp * ( p(k,j,i) + p(kp1,j,i) ) |
|---|
| 598 | ! |
|---|
| 599 | !-- Points in the center of the planes stretched by four points |
|---|
| 600 | !-- of the coarse grid cube |
|---|
| 601 | temp(ko,2*j+1,2*i+1) = 0.25_wp * ( p(k,j,i) + p(k,j,i+1) + & |
|---|
| 602 | p(k,j+1,i) + p(k,j+1,i+1) ) |
|---|
| 603 | temp(ke,2*j,2*i+1) = 0.25_wp * ( p(k,j,i) + p(k,j,i+1) + & |
|---|
| 604 | p(kp1,j,i) + p(kp1,j,i+1) ) |
|---|
| 605 | temp(ke,2*j+1,2*i) = 0.25_wp * ( p(k,j,i) + p(k,j+1,i) + & |
|---|
| 606 | p(kp1,j,i) + p(kp1,j+1,i) ) |
|---|
| 607 | ! |
|---|
| 608 | !-- Points in the middle of coarse grid cube |
|---|
| 609 | temp(ke,2*j+1,2*i+1) = 0.125_wp * & |
|---|
| 610 | ( p(k,j,i) + p(k,j,i+1) + & |
|---|
| 611 | p(k,j+1,i) + p(k,j+1,i+1) + & |
|---|
| 612 | p(kp1,j,i) + p(kp1,j,i+1) + & |
|---|
| 613 | p(kp1,j+1,i) + p(kp1,j+1,i+1) ) |
|---|
| 614 | |
|---|
| 615 | ENDDO |
|---|
| 616 | |
|---|
| 617 | ENDDO |
|---|
| 618 | ENDDO |
|---|
| 619 | !$OMP END PARALLEL |
|---|
| 620 | |
|---|
| 621 | ind_even_odd = even_odd_level(grid_level) |
|---|
| 622 | ! |
|---|
| 623 | !-- Horizontal boundary conditions |
|---|
| 624 | CALL exchange_horiz( temp, 1) |
|---|
| 625 | |
|---|
| 626 | IF ( .NOT. bc_lr_cyc ) THEN |
|---|
| 627 | IF ( bc_dirichlet_l .OR. bc_radiation_l ) THEN |
|---|
| 628 | temp(:,:,nxl_mg(l)-1) = temp(:,:,nxl_mg(l)) |
|---|
| 629 | ENDIF |
|---|
| 630 | IF ( bc_dirichlet_r .OR. bc_radiation_r ) THEN |
|---|
| 631 | temp(:,:,nxr_mg(l)+1) = temp(:,:,nxr_mg(l)) |
|---|
| 632 | ENDIF |
|---|
| 633 | ENDIF |
|---|
| 634 | |
|---|
| 635 | IF ( .NOT. bc_ns_cyc ) THEN |
|---|
| 636 | IF ( bc_dirichlet_n .OR. bc_radiation_n ) THEN |
|---|
| 637 | temp(:,nyn_mg(l)+1,:) = temp(:,nyn_mg(l),:) |
|---|
| 638 | ENDIF |
|---|
| 639 | IF ( bc_dirichlet_s .OR. bc_radiation_s ) THEN |
|---|
| 640 | temp(:,nys_mg(l)-1,:) = temp(:,nys_mg(l),:) |
|---|
| 641 | ENDIF |
|---|
| 642 | ENDIF |
|---|
| 643 | |
|---|
| 644 | ! |
|---|
| 645 | !-- Bottom and top boundary conditions |
|---|
| 646 | IF ( ibc_p_b == 1 ) THEN |
|---|
| 647 | ! |
|---|
| 648 | !-- equivalent to temp(nzb,:,: ) = temp(nzb+1,:,:) |
|---|
| 649 | temp(nzb,:,: ) = temp(ind_even_odd+1,:,:) |
|---|
| 650 | ELSE |
|---|
| 651 | temp(nzb,:,: ) = 0.0_wp |
|---|
| 652 | ENDIF |
|---|
| 653 | |
|---|
| 654 | IF ( ibc_p_t == 1 ) THEN |
|---|
| 655 | ! |
|---|
| 656 | !-- equivalent to temp(nzt_mg(l)+1,:,: ) = temp(nzt_mg(l),:,:) |
|---|
| 657 | temp(nzt_mg(l)+1,:,: ) = temp(ind_even_odd,:,:) |
|---|
| 658 | ELSE |
|---|
| 659 | temp(nzt_mg(l)+1,:,: ) = 0.0_wp |
|---|
| 660 | ENDIF |
|---|
| 661 | |
|---|
| 662 | CALL cpu_log( log_point_s(55), 'prolong', 'stop' ) |
|---|
| 663 | |
|---|
| 664 | END SUBROUTINE prolong |
|---|
| 665 | |
|---|
| 666 | |
|---|
| 667 | !------------------------------------------------------------------------------! |
|---|
| 668 | ! Description: |
|---|
| 669 | ! ------------ |
|---|
| 670 | !> Relaxation method for the multigrid scheme. A Gauss-Seidel iteration with |
|---|
| 671 | !> 3D-Red-Black decomposition (GS-RB) is used. |
|---|
| 672 | !------------------------------------------------------------------------------! |
|---|
| 673 | SUBROUTINE redblack( f_mg, p_mg ) |
|---|
| 674 | |
|---|
| 675 | |
|---|
| 676 | USE arrays_3d, & |
|---|
| 677 | ONLY: rho_air_mg |
|---|
| 678 | |
|---|
| 679 | USE control_parameters, & |
|---|
| 680 | ONLY: bc_lr_cyc, bc_ns_cyc, ibc_p_b, ibc_p_t, ngsrb |
|---|
| 681 | |
|---|
| 682 | USE grid_variables, & |
|---|
| 683 | ONLY: ddx2_mg, ddy2_mg |
|---|
| 684 | |
|---|
| 685 | USE indices, & |
|---|
| 686 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
|---|
| 687 | |
|---|
| 688 | IMPLICIT NONE |
|---|
| 689 | |
|---|
| 690 | INTEGER(iwp) :: color !< grid point color, either red or black |
|---|
| 691 | INTEGER(iwp) :: i !< index variable along x |
|---|
| 692 | INTEGER(iwp) :: ic !< index variable along x |
|---|
| 693 | INTEGER(iwp) :: j !< index variable along y |
|---|
| 694 | INTEGER(iwp) :: jc !< index variable along y |
|---|
| 695 | INTEGER(iwp) :: jj !< index variable along y |
|---|
| 696 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 697 | INTEGER(iwp) :: l !< grid level |
|---|
| 698 | INTEGER(iwp) :: n !< loop variable GauÃ-Seidel iterations |
|---|
| 699 | INTEGER(iwp) :: km1 !< index variable (k-1) |
|---|
| 700 | INTEGER(iwp) :: kp1 !< index variable (k+1) |
|---|
| 701 | |
|---|
| 702 | LOGICAL :: unroll !< flag indicating whether loop unrolling is possible |
|---|
| 703 | |
|---|
| 704 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 705 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 706 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: & |
|---|
| 707 | f_mg !< residual of perturbation pressure |
|---|
| 708 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 709 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 710 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: & |
|---|
| 711 | p_mg !< perturbation pressure |
|---|
| 712 | |
|---|
| 713 | l = grid_level |
|---|
| 714 | |
|---|
| 715 | unroll = ( MOD( nyn_mg(l)-nys_mg(l)+1, 4 ) == 0 .AND. & |
|---|
| 716 | MOD( nxr_mg(l)-nxl_mg(l)+1, 2 ) == 0 ) |
|---|
| 717 | |
|---|
| 718 | DO n = 1, ngsrb |
|---|
| 719 | |
|---|
| 720 | DO color = 1, 2 |
|---|
| 721 | |
|---|
| 722 | IF ( .NOT. unroll ) THEN |
|---|
| 723 | |
|---|
| 724 | CALL cpu_log( log_point_s(36), 'redblack_no_unroll_f', 'start' ) |
|---|
| 725 | ! |
|---|
| 726 | !-- Without unrolling of loops, no cache optimization |
|---|
| 727 | !$OMP PARALLEL PRIVATE (i,j,k,km1,kp1) |
|---|
| 728 | !$OMP DO |
|---|
| 729 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 730 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 731 | !DIR$ IVDEP |
|---|
| 732 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 733 | km1 = k-ind_even_odd-1 |
|---|
| 734 | kp1 = k-ind_even_odd |
|---|
| 735 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 736 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 737 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 738 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 739 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 740 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 741 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 742 | - f_mg(k,j,i) ) |
|---|
| 743 | ENDDO |
|---|
| 744 | ENDDO |
|---|
| 745 | ENDDO |
|---|
| 746 | |
|---|
| 747 | !$OMP DO |
|---|
| 748 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 749 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 750 | !DIR$ IVDEP |
|---|
| 751 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 752 | km1 = k-ind_even_odd-1 |
|---|
| 753 | kp1 = k-ind_even_odd |
|---|
| 754 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 755 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 756 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 757 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 758 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 759 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 760 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 761 | - f_mg(k,j,i) ) |
|---|
| 762 | ENDDO |
|---|
| 763 | ENDDO |
|---|
| 764 | ENDDO |
|---|
| 765 | |
|---|
| 766 | !$OMP DO |
|---|
| 767 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 768 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 769 | !DIR$ IVDEP |
|---|
| 770 | DO k = nzb+1, ind_even_odd |
|---|
| 771 | km1 = k+ind_even_odd |
|---|
| 772 | kp1 = k+ind_even_odd+1 |
|---|
| 773 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 774 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 775 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 776 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 777 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 778 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 779 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 780 | - f_mg(k,j,i) ) |
|---|
| 781 | ENDDO |
|---|
| 782 | ENDDO |
|---|
| 783 | ENDDO |
|---|
| 784 | |
|---|
| 785 | !$OMP DO |
|---|
| 786 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 787 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 788 | !DIR$ IVDEP |
|---|
| 789 | DO k = nzb+1, ind_even_odd |
|---|
| 790 | km1 = k+ind_even_odd |
|---|
| 791 | kp1 = k+ind_even_odd+1 |
|---|
| 792 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 793 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 794 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 795 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 796 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 797 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 798 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 799 | - f_mg(k,j,i) ) |
|---|
| 800 | ENDDO |
|---|
| 801 | ENDDO |
|---|
| 802 | ENDDO |
|---|
| 803 | !$OMP END PARALLEL |
|---|
| 804 | |
|---|
| 805 | CALL cpu_log( log_point_s(36), 'redblack_no_unroll_f', 'stop' ) |
|---|
| 806 | |
|---|
| 807 | ELSE |
|---|
| 808 | ! |
|---|
| 809 | !-- Loop unrolling along y, only one i loop for better cache use |
|---|
| 810 | CALL cpu_log( log_point_s(38), 'redblack_unroll_f', 'start' ) |
|---|
| 811 | |
|---|
| 812 | !$OMP PARALLEL PRIVATE (i,j,k,ic,jc,km1,kp1,jj) |
|---|
| 813 | !$OMP DO |
|---|
| 814 | DO ic = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 815 | DO jc = nys_mg(l), nyn_mg(l), 4 |
|---|
| 816 | i = ic |
|---|
| 817 | jj = jc+2-color |
|---|
| 818 | !DIR$ IVDEP |
|---|
| 819 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 820 | km1 = k-ind_even_odd-1 |
|---|
| 821 | kp1 = k-ind_even_odd |
|---|
| 822 | j = jj |
|---|
| 823 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 824 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 825 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 826 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 827 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 828 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 829 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 830 | - f_mg(k,j,i) ) |
|---|
| 831 | j = jj+2 |
|---|
| 832 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 833 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 834 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 835 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 836 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 837 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 838 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 839 | - f_mg(k,j,i) ) |
|---|
| 840 | ENDDO |
|---|
| 841 | |
|---|
| 842 | i = ic+1 |
|---|
| 843 | jj = jc+color-1 |
|---|
| 844 | !DIR$ IVDEP |
|---|
| 845 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 846 | km1 = k-ind_even_odd-1 |
|---|
| 847 | kp1 = k-ind_even_odd |
|---|
| 848 | j = jj |
|---|
| 849 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 850 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 851 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 852 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 853 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 854 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 855 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 856 | - f_mg(k,j,i) ) |
|---|
| 857 | j = jj+2 |
|---|
| 858 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 859 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 860 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 861 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 862 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 863 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 864 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 865 | - f_mg(k,j,i) ) |
|---|
| 866 | ENDDO |
|---|
| 867 | |
|---|
| 868 | i = ic |
|---|
| 869 | jj = jc+color-1 |
|---|
| 870 | !DIR$ IVDEP |
|---|
| 871 | DO k = nzb+1, ind_even_odd |
|---|
| 872 | km1 = k+ind_even_odd |
|---|
| 873 | kp1 = k+ind_even_odd+1 |
|---|
| 874 | j = jj |
|---|
| 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 | j = jj+2 |
|---|
| 884 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 885 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 886 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 887 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 888 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 889 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 890 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 891 | - f_mg(k,j,i) ) |
|---|
| 892 | ENDDO |
|---|
| 893 | |
|---|
| 894 | i = ic+1 |
|---|
| 895 | jj = jc+2-color |
|---|
| 896 | !DIR$ IVDEP |
|---|
| 897 | DO k = nzb+1, ind_even_odd |
|---|
| 898 | km1 = k+ind_even_odd |
|---|
| 899 | kp1 = k+ind_even_odd+1 |
|---|
| 900 | j = jj |
|---|
| 901 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 902 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 903 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 904 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 905 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 906 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 907 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 908 | - f_mg(k,j,i) ) |
|---|
| 909 | j = jj+2 |
|---|
| 910 | p_mg(k,j,i) = 1.0_wp / f1_mg_b(k,l) * ( & |
|---|
| 911 | rho_air_mg(k,l) * ddx2_mg(l) * & |
|---|
| 912 | ( p_mg(k,j,i+1) + p_mg(k,j,i-1) ) & |
|---|
| 913 | + rho_air_mg(k,l) * ddy2_mg(l) * & |
|---|
| 914 | ( p_mg(k,j+1,i) + p_mg(k,j-1,i) ) & |
|---|
| 915 | + f2_mg_b(k,l) * p_mg(kp1,j,i) & |
|---|
| 916 | + f3_mg_b(k,l) * p_mg(km1,j,i) & |
|---|
| 917 | - f_mg(k,j,i) ) |
|---|
| 918 | ENDDO |
|---|
| 919 | |
|---|
| 920 | ENDDO |
|---|
| 921 | ENDDO |
|---|
| 922 | !$OMP END PARALLEL |
|---|
| 923 | |
|---|
| 924 | CALL cpu_log( log_point_s(38), 'redblack_unroll_f', 'stop' ) |
|---|
| 925 | |
|---|
| 926 | ENDIF |
|---|
| 927 | |
|---|
| 928 | ! |
|---|
| 929 | !-- Horizontal boundary conditions |
|---|
| 930 | CALL special_exchange_horiz( p_mg, color ) |
|---|
| 931 | |
|---|
| 932 | IF ( .NOT. bc_lr_cyc ) THEN |
|---|
| 933 | IF ( bc_dirichlet_l .OR. bc_radiation_l ) THEN |
|---|
| 934 | p_mg(:,:,nxl_mg(l)-1) = p_mg(:,:,nxl_mg(l)) |
|---|
| 935 | ENDIF |
|---|
| 936 | IF ( bc_dirichlet_r .OR. bc_radiation_r ) THEN |
|---|
| 937 | p_mg(:,:,nxr_mg(l)+1) = p_mg(:,:,nxr_mg(l)) |
|---|
| 938 | ENDIF |
|---|
| 939 | ENDIF |
|---|
| 940 | |
|---|
| 941 | IF ( .NOT. bc_ns_cyc ) THEN |
|---|
| 942 | IF ( bc_dirichlet_n .OR. bc_radiation_n ) THEN |
|---|
| 943 | p_mg(:,nyn_mg(l)+1,:) = p_mg(:,nyn_mg(l),:) |
|---|
| 944 | ENDIF |
|---|
| 945 | IF ( bc_dirichlet_s .OR. bc_radiation_s ) THEN |
|---|
| 946 | p_mg(:,nys_mg(l)-1,:) = p_mg(:,nys_mg(l),:) |
|---|
| 947 | ENDIF |
|---|
| 948 | ENDIF |
|---|
| 949 | |
|---|
| 950 | ! |
|---|
| 951 | !-- Bottom and top boundary conditions |
|---|
| 952 | IF ( ibc_p_b == 1 ) THEN |
|---|
| 953 | ! |
|---|
| 954 | !-- equivalent to p_mg(nzb,:,: ) = p_mg(nzb+1,:,:) |
|---|
| 955 | p_mg(nzb,:,: ) = p_mg(ind_even_odd+1,:,:) |
|---|
| 956 | ELSE |
|---|
| 957 | p_mg(nzb,:,: ) = 0.0_wp |
|---|
| 958 | ENDIF |
|---|
| 959 | |
|---|
| 960 | IF ( ibc_p_t == 1 ) THEN |
|---|
| 961 | ! |
|---|
| 962 | !-- equivalent to p_mg(nzt_mg(l)+1,:,: ) = p_mg(nzt_mg(l),:,:) |
|---|
| 963 | p_mg(nzt_mg(l)+1,:,: ) = p_mg(ind_even_odd,:,:) |
|---|
| 964 | ELSE |
|---|
| 965 | p_mg(nzt_mg(l)+1,:,: ) = 0.0_wp |
|---|
| 966 | ENDIF |
|---|
| 967 | |
|---|
| 968 | ENDDO |
|---|
| 969 | |
|---|
| 970 | ENDDO |
|---|
| 971 | |
|---|
| 972 | END SUBROUTINE redblack |
|---|
| 973 | |
|---|
| 974 | |
|---|
| 975 | !------------------------------------------------------------------------------! |
|---|
| 976 | ! Description: |
|---|
| 977 | ! ------------ |
|---|
| 978 | !> Sort k-Dimension from sequential into blocks of even and odd. |
|---|
| 979 | !> This is required to vectorize the red-black subroutine. |
|---|
| 980 | !> Version for 3D-REAL arrays |
|---|
| 981 | !------------------------------------------------------------------------------! |
|---|
| 982 | SUBROUTINE sort_k_to_even_odd_blocks( p_mg , glevel ) |
|---|
| 983 | |
|---|
| 984 | |
|---|
| 985 | USE indices, & |
|---|
| 986 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
|---|
| 987 | |
|---|
| 988 | IMPLICIT NONE |
|---|
| 989 | |
|---|
| 990 | INTEGER(iwp), INTENT(IN) :: glevel !< grid level |
|---|
| 991 | |
|---|
| 992 | REAL(wp), DIMENSION(nzb:nzt_mg(glevel)+1, & |
|---|
| 993 | nys_mg(glevel)-1:nyn_mg(glevel)+1, & |
|---|
| 994 | nxl_mg(glevel)-1:nxr_mg(glevel)+1) :: & |
|---|
| 995 | p_mg !< array to be sorted |
|---|
| 996 | ! |
|---|
| 997 | !-- Local variables |
|---|
| 998 | INTEGER(iwp) :: i !< index variable along x |
|---|
| 999 | INTEGER(iwp) :: j !< index variable along y |
|---|
| 1000 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 1001 | INTEGER(iwp) :: l !< grid level |
|---|
| 1002 | INTEGER(iwp) :: ind !< index variable along z |
|---|
| 1003 | REAL(wp), DIMENSION(nzb:nzt_mg(glevel)+1) :: tmp !< odd-even sorted temporary array |
|---|
| 1004 | |
|---|
| 1005 | |
|---|
| 1006 | CALL cpu_log( log_point_s(52), 'sort_k_to_even_odd', 'start' ) |
|---|
| 1007 | |
|---|
| 1008 | l = glevel |
|---|
| 1009 | ind_even_odd = even_odd_level(l) |
|---|
| 1010 | |
|---|
| 1011 | !$OMP PARALLEL PRIVATE (i,j,k,ind,tmp) |
|---|
| 1012 | !$OMP DO |
|---|
| 1013 | DO i = nxl_mg(l)-1, nxr_mg(l)+1 |
|---|
| 1014 | DO j = nys_mg(l)-1, nyn_mg(l)+1 |
|---|
| 1015 | |
|---|
| 1016 | ! |
|---|
| 1017 | !-- Sort the data with even k index |
|---|
| 1018 | ind = nzb-1 |
|---|
| 1019 | DO k = nzb, nzt_mg(l), 2 |
|---|
| 1020 | ind = ind + 1 |
|---|
| 1021 | tmp(ind) = p_mg(k,j,i) |
|---|
| 1022 | ENDDO |
|---|
| 1023 | ! |
|---|
| 1024 | !-- Sort the data with odd k index |
|---|
| 1025 | DO k = nzb+1, nzt_mg(l)+1, 2 |
|---|
| 1026 | ind = ind + 1 |
|---|
| 1027 | tmp(ind) = p_mg(k,j,i) |
|---|
| 1028 | ENDDO |
|---|
| 1029 | |
|---|
| 1030 | p_mg(:,j,i) = tmp |
|---|
| 1031 | |
|---|
| 1032 | ENDDO |
|---|
| 1033 | ENDDO |
|---|
| 1034 | !$OMP END PARALLEL |
|---|
| 1035 | |
|---|
| 1036 | CALL cpu_log( log_point_s(52), 'sort_k_to_even_odd', 'stop' ) |
|---|
| 1037 | |
|---|
| 1038 | END SUBROUTINE sort_k_to_even_odd_blocks |
|---|
| 1039 | |
|---|
| 1040 | |
|---|
| 1041 | !------------------------------------------------------------------------------! |
|---|
| 1042 | ! Description: |
|---|
| 1043 | ! ------------ |
|---|
| 1044 | !> Sort k-Dimension from sequential into blocks of even and odd. |
|---|
| 1045 | !> This is required to vectorize the red-black subroutine. |
|---|
| 1046 | !> Version for 1D-REAL arrays |
|---|
| 1047 | !------------------------------------------------------------------------------! |
|---|
| 1048 | SUBROUTINE sort_k_to_even_odd_blocks_1d( f_mg, f_mg_b, glevel ) |
|---|
| 1049 | |
|---|
| 1050 | |
|---|
| 1051 | USE indices, & |
|---|
| 1052 | ONLY: nzb, nzt_mg |
|---|
| 1053 | |
|---|
| 1054 | IMPLICIT NONE |
|---|
| 1055 | |
|---|
| 1056 | INTEGER(iwp), INTENT(IN) :: glevel !< grid level |
|---|
| 1057 | |
|---|
| 1058 | REAL(wp), DIMENSION(nzb+1:nzt_mg(glevel)) :: f_mg !< 1D input array |
|---|
| 1059 | REAL(wp), DIMENSION(nzb:nzt_mg(glevel)+1) :: f_mg_b !< 1D output array |
|---|
| 1060 | |
|---|
| 1061 | ! |
|---|
| 1062 | !-- Local variables |
|---|
| 1063 | INTEGER(iwp) :: ind !< index variable along z |
|---|
| 1064 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 1065 | |
|---|
| 1066 | |
|---|
| 1067 | ind = nzb - 1 |
|---|
| 1068 | ! |
|---|
| 1069 | !-- Sort the data with even k index |
|---|
| 1070 | DO k = nzb, nzt_mg(glevel), 2 |
|---|
| 1071 | ind = ind + 1 |
|---|
| 1072 | IF ( k >= nzb+1 .AND. k <= nzt_mg(glevel) ) THEN |
|---|
| 1073 | f_mg_b(ind) = f_mg(k) |
|---|
| 1074 | ENDIF |
|---|
| 1075 | ENDDO |
|---|
| 1076 | ! |
|---|
| 1077 | !-- Sort the data with odd k index |
|---|
| 1078 | DO k = nzb+1, nzt_mg(glevel)+1, 2 |
|---|
| 1079 | ind = ind + 1 |
|---|
| 1080 | IF( k >= nzb+1 .AND. k <= nzt_mg(glevel) ) THEN |
|---|
| 1081 | f_mg_b(ind) = f_mg(k) |
|---|
| 1082 | ENDIF |
|---|
| 1083 | ENDDO |
|---|
| 1084 | |
|---|
| 1085 | END SUBROUTINE sort_k_to_even_odd_blocks_1d |
|---|
| 1086 | |
|---|
| 1087 | |
|---|
| 1088 | !------------------------------------------------------------------------------! |
|---|
| 1089 | ! Description: |
|---|
| 1090 | ! ------------ |
|---|
| 1091 | !> Sort k-Dimension from sequential into blocks of even and odd. |
|---|
| 1092 | !> This is required to vectorize the red-black subroutine. |
|---|
| 1093 | !> Version for 2D-INTEGER arrays |
|---|
| 1094 | !------------------------------------------------------------------------------! |
|---|
| 1095 | ! SUBROUTINE sort_k_to_even_odd_blocks_int( i_mg , glevel ) |
|---|
| 1096 | ! |
|---|
| 1097 | ! |
|---|
| 1098 | ! USE indices, & |
|---|
| 1099 | ! ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
|---|
| 1100 | ! |
|---|
| 1101 | ! IMPLICIT NONE |
|---|
| 1102 | ! |
|---|
| 1103 | ! INTEGER(iwp), INTENT(IN) :: glevel !< grid level |
|---|
| 1104 | ! |
|---|
| 1105 | ! INTEGER(iwp), DIMENSION(nzb:nzt_mg(glevel)+1, & |
|---|
| 1106 | ! nys_mg(glevel)-1:nyn_mg(glevel)+1, & |
|---|
| 1107 | ! nxl_mg(glevel)-1:nxr_mg(glevel)+1) :: & |
|---|
| 1108 | ! i_mg !< array to be sorted |
|---|
| 1109 | ! |
|---|
| 1110 | !-- Local variables |
|---|
| 1111 | ! INTEGER(iwp) :: i !< index variabel along x |
|---|
| 1112 | ! INTEGER(iwp) :: j !< index variable along y |
|---|
| 1113 | ! INTEGER(iwp) :: k !< index variable along z |
|---|
| 1114 | ! INTEGER(iwp) :: l !< grid level |
|---|
| 1115 | ! INTEGER(iwp) :: ind !< index variable along z |
|---|
| 1116 | ! INTEGER(iwp),DIMENSION(nzb:nzt_mg(glevel)+1) :: tmp !< temporary odd-even sorted array |
|---|
| 1117 | ! |
|---|
| 1118 | ! |
|---|
| 1119 | ! CALL cpu_log( log_point_s(52), 'sort_k_to_even_odd', 'start' ) |
|---|
| 1120 | ! |
|---|
| 1121 | ! l = glevel |
|---|
| 1122 | ! ind_even_odd = even_odd_level(l) |
|---|
| 1123 | ! |
|---|
| 1124 | ! DO i = nxl_mg(l)-1, nxr_mg(l)+1 |
|---|
| 1125 | ! DO j = nys_mg(l)-1, nyn_mg(l)+1 |
|---|
| 1126 | ! |
|---|
| 1127 | ! |
|---|
| 1128 | !-- Sort the data with even k index |
|---|
| 1129 | ! ind = nzb-1 |
|---|
| 1130 | ! DO k = nzb, nzt_mg(l), 2 |
|---|
| 1131 | ! ind = ind + 1 |
|---|
| 1132 | ! tmp(ind) = i_mg(k,j,i) |
|---|
| 1133 | ! ENDDO |
|---|
| 1134 | ! |
|---|
| 1135 | !-- Sort the data with odd k index |
|---|
| 1136 | ! DO k = nzb+1, nzt_mg(l)+1, 2 |
|---|
| 1137 | ! ind = ind + 1 |
|---|
| 1138 | ! tmp(ind) = i_mg(k,j,i) |
|---|
| 1139 | ! ENDDO |
|---|
| 1140 | ! |
|---|
| 1141 | ! i_mg(:,j,i) = tmp |
|---|
| 1142 | ! |
|---|
| 1143 | ! ENDDO |
|---|
| 1144 | ! ENDDO |
|---|
| 1145 | ! |
|---|
| 1146 | ! CALL cpu_log( log_point_s(52), 'sort_k_to_even_odd', 'stop' ) |
|---|
| 1147 | ! |
|---|
| 1148 | ! END SUBROUTINE sort_k_to_even_odd_blocks_int |
|---|
| 1149 | |
|---|
| 1150 | |
|---|
| 1151 | !------------------------------------------------------------------------------! |
|---|
| 1152 | ! Description: |
|---|
| 1153 | ! ------------ |
|---|
| 1154 | !> Sort k-dimension from blocks of even and odd into sequential |
|---|
| 1155 | !------------------------------------------------------------------------------! |
|---|
| 1156 | SUBROUTINE sort_k_to_sequential( p_mg ) |
|---|
| 1157 | |
|---|
| 1158 | |
|---|
| 1159 | USE control_parameters, & |
|---|
| 1160 | ONLY: grid_level |
|---|
| 1161 | |
|---|
| 1162 | USE indices, & |
|---|
| 1163 | ONLY: nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
|---|
| 1164 | |
|---|
| 1165 | IMPLICIT NONE |
|---|
| 1166 | |
|---|
| 1167 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 1168 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1169 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: & |
|---|
| 1170 | p_mg !< array to be sorted |
|---|
| 1171 | ! |
|---|
| 1172 | !-- Local variables |
|---|
| 1173 | INTEGER(iwp) :: i !< index variable along x |
|---|
| 1174 | INTEGER(iwp) :: j !< index variable along y |
|---|
| 1175 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 1176 | INTEGER(iwp) :: l !< grid level |
|---|
| 1177 | INTEGER(iwp) :: ind !< index variable along z |
|---|
| 1178 | |
|---|
| 1179 | REAL(wp),DIMENSION(nzb:nzt_mg(grid_level)+1) :: tmp |
|---|
| 1180 | |
|---|
| 1181 | |
|---|
| 1182 | l = grid_level |
|---|
| 1183 | |
|---|
| 1184 | !$OMP PARALLEL PRIVATE (i,j,k,ind,tmp) |
|---|
| 1185 | !$OMP DO |
|---|
| 1186 | DO i = nxl_mg(l)-1, nxr_mg(l)+1 |
|---|
| 1187 | DO j = nys_mg(l)-1, nyn_mg(l)+1 |
|---|
| 1188 | |
|---|
| 1189 | ind = nzb - 1 |
|---|
| 1190 | tmp = p_mg(:,j,i) |
|---|
| 1191 | DO k = nzb, nzt_mg(l), 2 |
|---|
| 1192 | ind = ind + 1 |
|---|
| 1193 | p_mg(k,j,i) = tmp(ind) |
|---|
| 1194 | ENDDO |
|---|
| 1195 | |
|---|
| 1196 | DO k = nzb+1, nzt_mg(l)+1, 2 |
|---|
| 1197 | ind = ind + 1 |
|---|
| 1198 | p_mg(k,j,i) = tmp(ind) |
|---|
| 1199 | ENDDO |
|---|
| 1200 | ENDDO |
|---|
| 1201 | ENDDO |
|---|
| 1202 | !$OMP END PARALLEL |
|---|
| 1203 | |
|---|
| 1204 | END SUBROUTINE sort_k_to_sequential |
|---|
| 1205 | |
|---|
| 1206 | |
|---|
| 1207 | !------------------------------------------------------------------------------! |
|---|
| 1208 | ! Description: |
|---|
| 1209 | ! ------------ |
|---|
| 1210 | !> Gather subdomain data from all PEs. |
|---|
| 1211 | !------------------------------------------------------------------------------! |
|---|
| 1212 | SUBROUTINE mg_gather( f2, f2_sub ) |
|---|
| 1213 | |
|---|
| 1214 | USE control_parameters, & |
|---|
| 1215 | ONLY: grid_level |
|---|
| 1216 | |
|---|
| 1217 | USE cpulog, & |
|---|
| 1218 | ONLY: cpu_log, log_point_s |
|---|
| 1219 | |
|---|
| 1220 | USE indices, & |
|---|
| 1221 | ONLY: mg_loc_ind, nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
|---|
| 1222 | |
|---|
| 1223 | IMPLICIT NONE |
|---|
| 1224 | |
|---|
| 1225 | INTEGER(iwp) :: i !< |
|---|
| 1226 | INTEGER(iwp) :: il !< |
|---|
| 1227 | INTEGER(iwp) :: ir !< |
|---|
| 1228 | INTEGER(iwp) :: j !< |
|---|
| 1229 | INTEGER(iwp) :: jn !< |
|---|
| 1230 | INTEGER(iwp) :: js !< |
|---|
| 1231 | INTEGER(iwp) :: k !< |
|---|
| 1232 | INTEGER(iwp) :: nwords !< |
|---|
| 1233 | |
|---|
| 1234 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 1235 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1236 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: f2 !< |
|---|
| 1237 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 1238 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1239 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: f2_l !< |
|---|
| 1240 | |
|---|
| 1241 | REAL(wp), DIMENSION(nzb:mg_loc_ind(5,myid)+1, & |
|---|
| 1242 | mg_loc_ind(3,myid)-1:mg_loc_ind(4,myid)+1, & |
|---|
| 1243 | mg_loc_ind(1,myid)-1:mg_loc_ind(2,myid)+1) :: f2_sub !< |
|---|
| 1244 | |
|---|
| 1245 | |
|---|
| 1246 | #if defined( __parallel ) |
|---|
| 1247 | CALL cpu_log( log_point_s(34), 'mg_gather', 'start' ) |
|---|
| 1248 | |
|---|
| 1249 | f2_l = 0.0_wp |
|---|
| 1250 | |
|---|
| 1251 | ! |
|---|
| 1252 | !-- Store the local subdomain array on the total array |
|---|
| 1253 | js = mg_loc_ind(3,myid) |
|---|
| 1254 | IF ( south_border_pe ) js = js - 1 |
|---|
| 1255 | jn = mg_loc_ind(4,myid) |
|---|
| 1256 | IF ( north_border_pe ) jn = jn + 1 |
|---|
| 1257 | il = mg_loc_ind(1,myid) |
|---|
| 1258 | IF ( left_border_pe ) il = il - 1 |
|---|
| 1259 | ir = mg_loc_ind(2,myid) |
|---|
| 1260 | IF ( right_border_pe ) ir = ir + 1 |
|---|
| 1261 | DO i = il, ir |
|---|
| 1262 | DO j = js, jn |
|---|
| 1263 | DO k = nzb, nzt_mg(grid_level)+1 |
|---|
| 1264 | f2_l(k,j,i) = f2_sub(k,j,i) |
|---|
| 1265 | ENDDO |
|---|
| 1266 | ENDDO |
|---|
| 1267 | ENDDO |
|---|
| 1268 | |
|---|
| 1269 | ! |
|---|
| 1270 | !-- Find out the number of array elements of the total array |
|---|
| 1271 | nwords = SIZE( f2 ) |
|---|
| 1272 | |
|---|
| 1273 | ! |
|---|
| 1274 | !-- Gather subdomain data from all PEs |
|---|
| 1275 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
|---|
| 1276 | CALL MPI_ALLREDUCE( f2_l(nzb,nys_mg(grid_level)-1,nxl_mg(grid_level)-1), & |
|---|
| 1277 | f2(nzb,nys_mg(grid_level)-1,nxl_mg(grid_level)-1), & |
|---|
| 1278 | nwords, MPI_REAL, MPI_SUM, comm2d, ierr ) |
|---|
| 1279 | |
|---|
| 1280 | CALL cpu_log( log_point_s(34), 'mg_gather', 'stop' ) |
|---|
| 1281 | #endif |
|---|
| 1282 | |
|---|
| 1283 | END SUBROUTINE mg_gather |
|---|
| 1284 | |
|---|
| 1285 | |
|---|
| 1286 | |
|---|
| 1287 | !------------------------------------------------------------------------------! |
|---|
| 1288 | ! Description: |
|---|
| 1289 | ! ------------ |
|---|
| 1290 | !> @todo It might be possible to improve the speed of this routine by using |
|---|
| 1291 | !> non-blocking communication |
|---|
| 1292 | !------------------------------------------------------------------------------! |
|---|
| 1293 | SUBROUTINE mg_scatter( p2, p2_sub ) |
|---|
| 1294 | |
|---|
| 1295 | USE control_parameters, & |
|---|
| 1296 | ONLY: grid_level |
|---|
| 1297 | |
|---|
| 1298 | USE cpulog, & |
|---|
| 1299 | ONLY: cpu_log, log_point_s |
|---|
| 1300 | |
|---|
| 1301 | USE indices, & |
|---|
| 1302 | ONLY: mg_loc_ind, nxl_mg, nxr_mg, nys_mg, nyn_mg, nzb, nzt_mg |
|---|
| 1303 | |
|---|
| 1304 | IMPLICIT NONE |
|---|
| 1305 | |
|---|
| 1306 | INTEGER(iwp) :: nwords !< |
|---|
| 1307 | |
|---|
| 1308 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level-1)+1, & |
|---|
| 1309 | nys_mg(grid_level-1)-1:nyn_mg(grid_level-1)+1, & |
|---|
| 1310 | nxl_mg(grid_level-1)-1:nxr_mg(grid_level-1)+1) :: p2 !< |
|---|
| 1311 | |
|---|
| 1312 | REAL(wp), DIMENSION(nzb:mg_loc_ind(5,myid)+1, & |
|---|
| 1313 | mg_loc_ind(3,myid)-1:mg_loc_ind(4,myid)+1, & |
|---|
| 1314 | mg_loc_ind(1,myid)-1:mg_loc_ind(2,myid)+1) :: p2_sub !< |
|---|
| 1315 | |
|---|
| 1316 | ! |
|---|
| 1317 | !-- Find out the number of array elements of the subdomain array |
|---|
| 1318 | nwords = SIZE( p2_sub ) |
|---|
| 1319 | |
|---|
| 1320 | #if defined( __parallel ) |
|---|
| 1321 | CALL cpu_log( log_point_s(35), 'mg_scatter', 'start' ) |
|---|
| 1322 | |
|---|
| 1323 | p2_sub = p2(:,mg_loc_ind(3,myid)-1:mg_loc_ind(4,myid)+1, & |
|---|
| 1324 | mg_loc_ind(1,myid)-1:mg_loc_ind(2,myid)+1) |
|---|
| 1325 | |
|---|
| 1326 | CALL cpu_log( log_point_s(35), 'mg_scatter', 'stop' ) |
|---|
| 1327 | #endif |
|---|
| 1328 | |
|---|
| 1329 | END SUBROUTINE mg_scatter |
|---|
| 1330 | |
|---|
| 1331 | |
|---|
| 1332 | !------------------------------------------------------------------------------! |
|---|
| 1333 | ! Description: |
|---|
| 1334 | ! ------------ |
|---|
| 1335 | !> This is where the multigrid technique takes place. V- and W- Cycle are |
|---|
| 1336 | !> implemented and steered by the parameter "gamma". Parameter "nue" determines |
|---|
| 1337 | !> the convergence of the multigrid iterative solution. There are nue times |
|---|
| 1338 | !> RB-GS iterations. It should be set to "1" or "2", considering the time effort |
|---|
| 1339 | !> one would like to invest. Last choice shows a very good converging factor, |
|---|
| 1340 | !> but leads to an increase in computing time. |
|---|
| 1341 | !------------------------------------------------------------------------------! |
|---|
| 1342 | RECURSIVE SUBROUTINE next_mg_level( f_mg, p_mg, p3, r ) |
|---|
| 1343 | |
|---|
| 1344 | USE control_parameters, & |
|---|
| 1345 | ONLY: bc_lr_dirrad, bc_lr_raddir, bc_ns_dirrad, bc_ns_raddir, & |
|---|
| 1346 | child_domain, gamma_mg, grid_level_count, maximum_grid_level,& |
|---|
| 1347 | mg_switch_to_pe0_level, mg_switch_to_pe0, ngsrb |
|---|
| 1348 | |
|---|
| 1349 | USE indices, & |
|---|
| 1350 | ONLY: mg_loc_ind, nxl, nxl_mg, nxr, nxr_mg, nys, nys_mg, nyn, & |
|---|
| 1351 | nyn_mg, nzb, nzt, nzt_mg |
|---|
| 1352 | |
|---|
| 1353 | IMPLICIT NONE |
|---|
| 1354 | |
|---|
| 1355 | INTEGER(iwp) :: i !< index variable along x |
|---|
| 1356 | INTEGER(iwp) :: j !< index variable along y |
|---|
| 1357 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 1358 | INTEGER(iwp) :: nxl_mg_save !< |
|---|
| 1359 | INTEGER(iwp) :: nxr_mg_save !< |
|---|
| 1360 | INTEGER(iwp) :: nyn_mg_save !< |
|---|
| 1361 | INTEGER(iwp) :: nys_mg_save !< |
|---|
| 1362 | INTEGER(iwp) :: nzt_mg_save !< |
|---|
| 1363 | |
|---|
| 1364 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 1365 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1366 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: f_mg !< |
|---|
| 1367 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 1368 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1369 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: p_mg !< |
|---|
| 1370 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 1371 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1372 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: p3 !< |
|---|
| 1373 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 1374 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1375 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: r !< |
|---|
| 1376 | |
|---|
| 1377 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level-1)+1, & |
|---|
| 1378 | nys_mg(grid_level-1)-1:nyn_mg(grid_level-1)+1, & |
|---|
| 1379 | nxl_mg(grid_level-1)-1:nxr_mg(grid_level-1)+1) :: f2 !< |
|---|
| 1380 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level-1)+1, & |
|---|
| 1381 | nys_mg(grid_level-1)-1:nyn_mg(grid_level-1)+1, & |
|---|
| 1382 | nxl_mg(grid_level-1)-1:nxr_mg(grid_level-1)+1) :: p2 !< |
|---|
| 1383 | |
|---|
| 1384 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: f2_sub !< |
|---|
| 1385 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: p2_sub !< |
|---|
| 1386 | |
|---|
| 1387 | ! |
|---|
| 1388 | !-- Restriction to the coarsest grid |
|---|
| 1389 | 10 IF ( grid_level == 1 ) THEN |
|---|
| 1390 | |
|---|
| 1391 | ! |
|---|
| 1392 | !-- Solution on the coarsest grid. Double the number of Gauss-Seidel |
|---|
| 1393 | !-- iterations in order to get a more accurate solution. |
|---|
| 1394 | ngsrb = 2 * ngsrb |
|---|
| 1395 | |
|---|
| 1396 | ind_even_odd = even_odd_level(grid_level) |
|---|
| 1397 | |
|---|
| 1398 | CALL redblack( f_mg, p_mg ) |
|---|
| 1399 | |
|---|
| 1400 | ngsrb = ngsrb / 2 |
|---|
| 1401 | |
|---|
| 1402 | |
|---|
| 1403 | ELSEIF ( grid_level /= 1 ) THEN |
|---|
| 1404 | |
|---|
| 1405 | grid_level_count(grid_level) = grid_level_count(grid_level) + 1 |
|---|
| 1406 | |
|---|
| 1407 | ! |
|---|
| 1408 | !-- Solution on the actual grid level |
|---|
| 1409 | ind_even_odd = even_odd_level(grid_level) |
|---|
| 1410 | |
|---|
| 1411 | CALL redblack( f_mg, p_mg ) |
|---|
| 1412 | |
|---|
| 1413 | ! |
|---|
| 1414 | !-- Determination of the actual residual |
|---|
| 1415 | CALL resid( f_mg, p_mg, r ) |
|---|
| 1416 | |
|---|
| 1417 | !-- Restriction of the residual (finer grid values!) to the next coarser |
|---|
| 1418 | !-- grid. Therefore, the grid level has to be decremented now. nxl..nzt have |
|---|
| 1419 | !-- to be set to the coarse grid values, because these variables are needed |
|---|
| 1420 | !-- for the exchange of ghost points in routine exchange_horiz |
|---|
| 1421 | grid_level = grid_level - 1 |
|---|
| 1422 | |
|---|
| 1423 | nxl = nxl_mg(grid_level) |
|---|
| 1424 | nys = nys_mg(grid_level) |
|---|
| 1425 | nxr = nxr_mg(grid_level) |
|---|
| 1426 | nyn = nyn_mg(grid_level) |
|---|
| 1427 | nzt = nzt_mg(grid_level) |
|---|
| 1428 | |
|---|
| 1429 | IF ( grid_level == mg_switch_to_pe0_level ) THEN |
|---|
| 1430 | |
|---|
| 1431 | ! |
|---|
| 1432 | !-- From this level on, calculations are done on PE0 only. |
|---|
| 1433 | !-- First, carry out restriction on the subdomain. |
|---|
| 1434 | !-- Therefore, indices of the level have to be changed to subdomain |
|---|
| 1435 | !-- values in between (otherwise, the restrict routine would expect |
|---|
| 1436 | !-- the gathered array) |
|---|
| 1437 | |
|---|
| 1438 | nxl_mg_save = nxl_mg(grid_level) |
|---|
| 1439 | nxr_mg_save = nxr_mg(grid_level) |
|---|
| 1440 | nys_mg_save = nys_mg(grid_level) |
|---|
| 1441 | nyn_mg_save = nyn_mg(grid_level) |
|---|
| 1442 | nzt_mg_save = nzt_mg(grid_level) |
|---|
| 1443 | nxl_mg(grid_level) = mg_loc_ind(1,myid) |
|---|
| 1444 | nxr_mg(grid_level) = mg_loc_ind(2,myid) |
|---|
| 1445 | nys_mg(grid_level) = mg_loc_ind(3,myid) |
|---|
| 1446 | nyn_mg(grid_level) = mg_loc_ind(4,myid) |
|---|
| 1447 | nzt_mg(grid_level) = mg_loc_ind(5,myid) |
|---|
| 1448 | nxl = mg_loc_ind(1,myid) |
|---|
| 1449 | nxr = mg_loc_ind(2,myid) |
|---|
| 1450 | nys = mg_loc_ind(3,myid) |
|---|
| 1451 | nyn = mg_loc_ind(4,myid) |
|---|
| 1452 | nzt = mg_loc_ind(5,myid) |
|---|
| 1453 | |
|---|
| 1454 | ALLOCATE( f2_sub(nzb:nzt_mg(grid_level)+1, & |
|---|
| 1455 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1456 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) ) |
|---|
| 1457 | |
|---|
| 1458 | CALL restrict( f2_sub, r ) |
|---|
| 1459 | |
|---|
| 1460 | ! |
|---|
| 1461 | !-- Restore the correct indices of this level |
|---|
| 1462 | nxl_mg(grid_level) = nxl_mg_save |
|---|
| 1463 | nxr_mg(grid_level) = nxr_mg_save |
|---|
| 1464 | nys_mg(grid_level) = nys_mg_save |
|---|
| 1465 | nyn_mg(grid_level) = nyn_mg_save |
|---|
| 1466 | nzt_mg(grid_level) = nzt_mg_save |
|---|
| 1467 | nxl = nxl_mg(grid_level) |
|---|
| 1468 | nxr = nxr_mg(grid_level) |
|---|
| 1469 | nys = nys_mg(grid_level) |
|---|
| 1470 | nyn = nyn_mg(grid_level) |
|---|
| 1471 | nzt = nzt_mg(grid_level) |
|---|
| 1472 | ! |
|---|
| 1473 | !-- Gather all arrays from the subdomains on PE0 |
|---|
| 1474 | CALL mg_gather( f2, f2_sub ) |
|---|
| 1475 | |
|---|
| 1476 | ! |
|---|
| 1477 | !-- Set switch for routine exchange_horiz, that no ghostpoint exchange |
|---|
| 1478 | !-- has to be carried out from now on |
|---|
| 1479 | mg_switch_to_pe0 = .TRUE. |
|---|
| 1480 | |
|---|
| 1481 | ! |
|---|
| 1482 | !-- In case of non-cyclic lateral boundary conditions, both in- and |
|---|
| 1483 | !-- outflow conditions have to be used on all PEs after the switch, |
|---|
| 1484 | !-- because then they have the total domain. |
|---|
| 1485 | IF ( bc_lr_dirrad ) THEN |
|---|
| 1486 | bc_dirichlet_l = .TRUE. |
|---|
| 1487 | bc_dirichlet_r = .FALSE. |
|---|
| 1488 | bc_radiation_l = .FALSE. |
|---|
| 1489 | bc_radiation_r = .TRUE. |
|---|
| 1490 | ELSEIF ( bc_lr_raddir ) THEN |
|---|
| 1491 | bc_dirichlet_l = .FALSE. |
|---|
| 1492 | bc_dirichlet_r = .TRUE. |
|---|
| 1493 | bc_radiation_l = .TRUE. |
|---|
| 1494 | bc_radiation_r = .FALSE. |
|---|
| 1495 | ELSEIF ( child_domain .OR. nesting_offline ) THEN |
|---|
| 1496 | bc_dirichlet_l = .TRUE. |
|---|
| 1497 | bc_dirichlet_r = .TRUE. |
|---|
| 1498 | ENDIF |
|---|
| 1499 | |
|---|
| 1500 | IF ( bc_ns_dirrad ) THEN |
|---|
| 1501 | bc_dirichlet_n = .TRUE. |
|---|
| 1502 | bc_dirichlet_s = .FALSE. |
|---|
| 1503 | bc_radiation_n = .FALSE. |
|---|
| 1504 | bc_radiation_s = .TRUE. |
|---|
| 1505 | ELSEIF ( bc_ns_raddir ) THEN |
|---|
| 1506 | bc_dirichlet_n = .FALSE. |
|---|
| 1507 | bc_dirichlet_s = .TRUE. |
|---|
| 1508 | bc_radiation_n = .TRUE. |
|---|
| 1509 | bc_radiation_s = .FALSE. |
|---|
| 1510 | ELSEIF ( child_domain .OR. nesting_offline) THEN |
|---|
| 1511 | bc_dirichlet_s = .TRUE. |
|---|
| 1512 | bc_dirichlet_n = .TRUE. |
|---|
| 1513 | ENDIF |
|---|
| 1514 | |
|---|
| 1515 | DEALLOCATE( f2_sub ) |
|---|
| 1516 | |
|---|
| 1517 | ELSE |
|---|
| 1518 | |
|---|
| 1519 | CALL restrict( f2, r ) |
|---|
| 1520 | |
|---|
| 1521 | ind_even_odd = even_odd_level(grid_level) ! must be after restrict |
|---|
| 1522 | |
|---|
| 1523 | ENDIF |
|---|
| 1524 | |
|---|
| 1525 | p2 = 0.0_wp |
|---|
| 1526 | |
|---|
| 1527 | ! |
|---|
| 1528 | !-- Repeat the same procedure till the coarsest grid is reached |
|---|
| 1529 | CALL next_mg_level( f2, p2, p3, r ) |
|---|
| 1530 | |
|---|
| 1531 | ENDIF |
|---|
| 1532 | |
|---|
| 1533 | ! |
|---|
| 1534 | !-- Now follows the prolongation |
|---|
| 1535 | IF ( grid_level >= 2 ) THEN |
|---|
| 1536 | |
|---|
| 1537 | ! |
|---|
| 1538 | !-- Prolongation of the new residual. The values are transferred |
|---|
| 1539 | !-- from the coarse to the next finer grid. |
|---|
| 1540 | IF ( grid_level == mg_switch_to_pe0_level+1 ) THEN |
|---|
| 1541 | |
|---|
| 1542 | #if defined( __parallel ) |
|---|
| 1543 | ! |
|---|
| 1544 | !-- At this level, the new residual first has to be scattered from |
|---|
| 1545 | !-- PE0 to the other PEs |
|---|
| 1546 | ALLOCATE( p2_sub(nzb:mg_loc_ind(5,myid)+1, & |
|---|
| 1547 | mg_loc_ind(3,myid)-1:mg_loc_ind(4,myid)+1, & |
|---|
| 1548 | mg_loc_ind(1,myid)-1:mg_loc_ind(2,myid)+1) ) |
|---|
| 1549 | |
|---|
| 1550 | CALL mg_scatter( p2, p2_sub ) |
|---|
| 1551 | |
|---|
| 1552 | ! |
|---|
| 1553 | !-- Therefore, indices of the previous level have to be changed to |
|---|
| 1554 | !-- subdomain values in between (otherwise, the prolong routine would |
|---|
| 1555 | !-- expect the gathered array) |
|---|
| 1556 | nxl_mg_save = nxl_mg(grid_level-1) |
|---|
| 1557 | nxr_mg_save = nxr_mg(grid_level-1) |
|---|
| 1558 | nys_mg_save = nys_mg(grid_level-1) |
|---|
| 1559 | nyn_mg_save = nyn_mg(grid_level-1) |
|---|
| 1560 | nzt_mg_save = nzt_mg(grid_level-1) |
|---|
| 1561 | nxl_mg(grid_level-1) = mg_loc_ind(1,myid) |
|---|
| 1562 | nxr_mg(grid_level-1) = mg_loc_ind(2,myid) |
|---|
| 1563 | nys_mg(grid_level-1) = mg_loc_ind(3,myid) |
|---|
| 1564 | nyn_mg(grid_level-1) = mg_loc_ind(4,myid) |
|---|
| 1565 | nzt_mg(grid_level-1) = mg_loc_ind(5,myid) |
|---|
| 1566 | |
|---|
| 1567 | ! |
|---|
| 1568 | !-- Set switch for routine exchange_horiz, that ghostpoint exchange |
|---|
| 1569 | !-- has to be carried again out from now on |
|---|
| 1570 | mg_switch_to_pe0 = .FALSE. |
|---|
| 1571 | |
|---|
| 1572 | ! |
|---|
| 1573 | !-- For non-cyclic lateral boundary conditions and in case of nesting, |
|---|
| 1574 | !-- restore the in-/outflow conditions. |
|---|
| 1575 | bc_dirichlet_l = .FALSE.; bc_dirichlet_r = .FALSE. |
|---|
| 1576 | bc_dirichlet_n = .FALSE.; bc_dirichlet_s = .FALSE. |
|---|
| 1577 | bc_radiation_l = .FALSE.; bc_radiation_r = .FALSE. |
|---|
| 1578 | bc_radiation_n = .FALSE.; bc_radiation_s = .FALSE. |
|---|
| 1579 | |
|---|
| 1580 | IF ( pleft == MPI_PROC_NULL ) THEN |
|---|
| 1581 | IF ( bc_lr_dirrad .OR. child_domain .OR. nesting_offline ) & |
|---|
| 1582 | THEN |
|---|
| 1583 | bc_dirichlet_l = .TRUE. |
|---|
| 1584 | ELSEIF ( bc_lr_raddir ) THEN |
|---|
| 1585 | bc_radiation_l = .TRUE. |
|---|
| 1586 | ENDIF |
|---|
| 1587 | ENDIF |
|---|
| 1588 | |
|---|
| 1589 | IF ( pright == MPI_PROC_NULL ) THEN |
|---|
| 1590 | IF ( bc_lr_dirrad ) THEN |
|---|
| 1591 | bc_radiation_r = .TRUE. |
|---|
| 1592 | ELSEIF ( bc_lr_raddir .OR. child_domain .OR. & |
|---|
| 1593 | nesting_offline ) THEN |
|---|
| 1594 | bc_dirichlet_r = .TRUE. |
|---|
| 1595 | ENDIF |
|---|
| 1596 | ENDIF |
|---|
| 1597 | |
|---|
| 1598 | IF ( psouth == MPI_PROC_NULL ) THEN |
|---|
| 1599 | IF ( bc_ns_dirrad ) THEN |
|---|
| 1600 | bc_radiation_s = .TRUE. |
|---|
| 1601 | ELSEIF ( bc_ns_raddir .OR. child_domain .OR. & |
|---|
| 1602 | nesting_offline ) THEN |
|---|
| 1603 | bc_dirichlet_s = .TRUE. |
|---|
| 1604 | ENDIF |
|---|
| 1605 | ENDIF |
|---|
| 1606 | |
|---|
| 1607 | IF ( pnorth == MPI_PROC_NULL ) THEN |
|---|
| 1608 | IF ( bc_ns_dirrad .OR. child_domain .OR. nesting_offline ) & |
|---|
| 1609 | THEN |
|---|
| 1610 | bc_dirichlet_n = .TRUE. |
|---|
| 1611 | ELSEIF ( bc_ns_raddir ) THEN |
|---|
| 1612 | bc_radiation_n = .TRUE. |
|---|
| 1613 | ENDIF |
|---|
| 1614 | ENDIF |
|---|
| 1615 | |
|---|
| 1616 | CALL prolong( p2_sub, p3 ) |
|---|
| 1617 | |
|---|
| 1618 | ! |
|---|
| 1619 | !-- Restore the correct indices of the previous level |
|---|
| 1620 | nxl_mg(grid_level-1) = nxl_mg_save |
|---|
| 1621 | nxr_mg(grid_level-1) = nxr_mg_save |
|---|
| 1622 | nys_mg(grid_level-1) = nys_mg_save |
|---|
| 1623 | nyn_mg(grid_level-1) = nyn_mg_save |
|---|
| 1624 | nzt_mg(grid_level-1) = nzt_mg_save |
|---|
| 1625 | |
|---|
| 1626 | DEALLOCATE( p2_sub ) |
|---|
| 1627 | #endif |
|---|
| 1628 | |
|---|
| 1629 | ELSE |
|---|
| 1630 | |
|---|
| 1631 | CALL prolong( p2, p3 ) |
|---|
| 1632 | |
|---|
| 1633 | ENDIF |
|---|
| 1634 | |
|---|
| 1635 | ! |
|---|
| 1636 | !-- Computation of the new pressure correction. Therefore, |
|---|
| 1637 | !-- values from prior grids are added up automatically stage by stage. |
|---|
| 1638 | DO i = nxl_mg(grid_level)-1, nxr_mg(grid_level)+1 |
|---|
| 1639 | DO j = nys_mg(grid_level)-1, nyn_mg(grid_level)+1 |
|---|
| 1640 | DO k = nzb, nzt_mg(grid_level)+1 |
|---|
| 1641 | p_mg(k,j,i) = p_mg(k,j,i) + p3(k,j,i) |
|---|
| 1642 | ENDDO |
|---|
| 1643 | ENDDO |
|---|
| 1644 | ENDDO |
|---|
| 1645 | |
|---|
| 1646 | ! |
|---|
| 1647 | !-- Relaxation of the new solution |
|---|
| 1648 | CALL redblack( f_mg, p_mg ) |
|---|
| 1649 | |
|---|
| 1650 | ENDIF |
|---|
| 1651 | |
|---|
| 1652 | |
|---|
| 1653 | ! |
|---|
| 1654 | !-- The following few lines serve the steering of the multigrid scheme |
|---|
| 1655 | IF ( grid_level == maximum_grid_level ) THEN |
|---|
| 1656 | |
|---|
| 1657 | GOTO 20 |
|---|
| 1658 | |
|---|
| 1659 | ELSEIF ( grid_level /= maximum_grid_level .AND. grid_level /= 1 .AND. & |
|---|
| 1660 | grid_level_count(grid_level) /= gamma_mg ) THEN |
|---|
| 1661 | |
|---|
| 1662 | GOTO 10 |
|---|
| 1663 | |
|---|
| 1664 | ENDIF |
|---|
| 1665 | |
|---|
| 1666 | ! |
|---|
| 1667 | !-- Reset counter for the next call of poismg |
|---|
| 1668 | grid_level_count(grid_level) = 0 |
|---|
| 1669 | |
|---|
| 1670 | ! |
|---|
| 1671 | !-- Continue with the next finer level. nxl..nzt have to be |
|---|
| 1672 | !-- set to the finer grid values, because these variables are needed for the |
|---|
| 1673 | !-- exchange of ghost points in routine exchange_horiz |
|---|
| 1674 | grid_level = grid_level + 1 |
|---|
| 1675 | ind_even_odd = even_odd_level(grid_level) |
|---|
| 1676 | |
|---|
| 1677 | nxl = nxl_mg(grid_level) |
|---|
| 1678 | nxr = nxr_mg(grid_level) |
|---|
| 1679 | nys = nys_mg(grid_level) |
|---|
| 1680 | nyn = nyn_mg(grid_level) |
|---|
| 1681 | nzt = nzt_mg(grid_level) |
|---|
| 1682 | |
|---|
| 1683 | 20 CONTINUE |
|---|
| 1684 | |
|---|
| 1685 | END SUBROUTINE next_mg_level |
|---|
| 1686 | |
|---|
| 1687 | |
|---|
| 1688 | !------------------------------------------------------------------------------! |
|---|
| 1689 | ! Description: |
|---|
| 1690 | ! ------------ |
|---|
| 1691 | !> Initial settings for sorting k-dimension from sequential order (alternate |
|---|
| 1692 | !> even/odd) into blocks of even and odd or vice versa |
|---|
| 1693 | !------------------------------------------------------------------------------! |
|---|
| 1694 | SUBROUTINE init_even_odd_blocks |
|---|
| 1695 | |
|---|
| 1696 | |
|---|
| 1697 | USE arrays_3d, & |
|---|
| 1698 | ONLY: f1_mg, f2_mg, f3_mg |
|---|
| 1699 | |
|---|
| 1700 | USE control_parameters, & |
|---|
| 1701 | ONLY: grid_level, maximum_grid_level |
|---|
| 1702 | |
|---|
| 1703 | USE indices, & |
|---|
| 1704 | ONLY: nzb, nzt, nzt_mg |
|---|
| 1705 | |
|---|
| 1706 | USE indices, & |
|---|
| 1707 | ONLY: nzb, nzt_mg |
|---|
| 1708 | |
|---|
| 1709 | IMPLICIT NONE |
|---|
| 1710 | ! |
|---|
| 1711 | !-- Local variables |
|---|
| 1712 | INTEGER(iwp) :: i !< |
|---|
| 1713 | INTEGER(iwp) :: l !< |
|---|
| 1714 | |
|---|
| 1715 | LOGICAL, SAVE :: lfirst = .TRUE. |
|---|
| 1716 | |
|---|
| 1717 | |
|---|
| 1718 | IF ( .NOT. lfirst ) RETURN |
|---|
| 1719 | |
|---|
| 1720 | ALLOCATE( even_odd_level(maximum_grid_level) ) |
|---|
| 1721 | |
|---|
| 1722 | ALLOCATE( f1_mg_b(nzb:nzt+1,maximum_grid_level), & |
|---|
| 1723 | f2_mg_b(nzb:nzt+1,maximum_grid_level), & |
|---|
| 1724 | f3_mg_b(nzb:nzt+1,maximum_grid_level) ) |
|---|
| 1725 | |
|---|
| 1726 | ! |
|---|
| 1727 | !-- Set border index between the even and odd block |
|---|
| 1728 | DO i = maximum_grid_level, 1, -1 |
|---|
| 1729 | even_odd_level(i) = nzt_mg(i) / 2 |
|---|
| 1730 | ENDDO |
|---|
| 1731 | |
|---|
| 1732 | ! |
|---|
| 1733 | !-- Sort grid coefficients used in red/black scheme and for calculating the |
|---|
| 1734 | !-- residual to block (even/odd) structure |
|---|
| 1735 | DO l = maximum_grid_level, 1 , -1 |
|---|
| 1736 | CALL sort_k_to_even_odd_blocks( f1_mg(nzb+1:nzt_mg(grid_level),l), & |
|---|
| 1737 | f1_mg_b(nzb:nzt_mg(grid_level)+1,l), & |
|---|
| 1738 | l ) |
|---|
| 1739 | CALL sort_k_to_even_odd_blocks( f2_mg(nzb+1:nzt_mg(grid_level),l), & |
|---|
| 1740 | f2_mg_b(nzb:nzt_mg(grid_level)+1,l), & |
|---|
| 1741 | l ) |
|---|
| 1742 | CALL sort_k_to_even_odd_blocks( f3_mg(nzb+1:nzt_mg(grid_level),l), & |
|---|
| 1743 | f3_mg_b(nzb:nzt_mg(grid_level)+1,l), & |
|---|
| 1744 | l ) |
|---|
| 1745 | ENDDO |
|---|
| 1746 | |
|---|
| 1747 | lfirst = .FALSE. |
|---|
| 1748 | |
|---|
| 1749 | END SUBROUTINE init_even_odd_blocks |
|---|
| 1750 | |
|---|
| 1751 | |
|---|
| 1752 | !------------------------------------------------------------------------------! |
|---|
| 1753 | ! Description: |
|---|
| 1754 | ! ------------ |
|---|
| 1755 | !> Special exchange_horiz subroutine for use in redblack. Transfers only |
|---|
| 1756 | !> "red" or "black" data points. |
|---|
| 1757 | !------------------------------------------------------------------------------! |
|---|
| 1758 | SUBROUTINE special_exchange_horiz( p_mg, color ) |
|---|
| 1759 | |
|---|
| 1760 | |
|---|
| 1761 | USE control_parameters, & |
|---|
| 1762 | ONLY: grid_level, mg_switch_to_pe0_level, synchronous_exchange |
|---|
| 1763 | |
|---|
| 1764 | USE indices, & |
|---|
| 1765 | ONLY: nxl, nxl_mg, nxr, nxr_mg, nys, nys_mg, nyn, & |
|---|
| 1766 | nyn_mg, nzb, nzt, nzt_mg |
|---|
| 1767 | |
|---|
| 1768 | IMPLICIT NONE |
|---|
| 1769 | |
|---|
| 1770 | REAL(wp), DIMENSION(nzb:nzt_mg(grid_level)+1, & |
|---|
| 1771 | nys_mg(grid_level)-1:nyn_mg(grid_level)+1, & |
|---|
| 1772 | nxl_mg(grid_level)-1:nxr_mg(grid_level)+1) :: & |
|---|
| 1773 | p_mg !< treated array |
|---|
| 1774 | |
|---|
| 1775 | INTEGER(iwp), intent(IN) :: color !< flag for grid point type (red or black) |
|---|
| 1776 | ! |
|---|
| 1777 | !-- Local variables |
|---|
| 1778 | INTEGER(iwp) :: i !< index variable along x |
|---|
| 1779 | INTEGER(iwp) :: i1 !< index variable along x on coarse level |
|---|
| 1780 | INTEGER(iwp) :: i2 !< index variable along x on coarse level |
|---|
| 1781 | |
|---|
| 1782 | INTEGER(iwp) :: j !< index variable along y |
|---|
| 1783 | INTEGER(iwp) :: j1 !< index variable along y on coarse level |
|---|
| 1784 | INTEGER(iwp) :: j2 !< index variable along y on coarse level |
|---|
| 1785 | INTEGER(iwp) :: k !< index variable along z |
|---|
| 1786 | INTEGER(iwp) :: l !< short for grid level |
|---|
| 1787 | INTEGER(iwp) :: jys !< index for lower local PE boundary along y |
|---|
| 1788 | INTEGER(iwp) :: jyn !< index for upper local PE boundary along y |
|---|
| 1789 | INTEGER(iwp) :: ixl !< index for lower local PE boundary along x |
|---|
| 1790 | INTEGER(iwp) :: ixr !< index for upper local PE boundary along x |
|---|
| 1791 | |
|---|
| 1792 | LOGICAL :: synchronous_exchange_save !< dummy to reset synchronous_exchange to prescribed value |
|---|
| 1793 | |
|---|
| 1794 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: temp !< temporary array on next coarser grid level |
|---|
| 1795 | |
|---|
| 1796 | #if defined ( __parallel ) |
|---|
| 1797 | synchronous_exchange_save = synchronous_exchange |
|---|
| 1798 | synchronous_exchange = .FALSE. |
|---|
| 1799 | |
|---|
| 1800 | l = grid_level |
|---|
| 1801 | |
|---|
| 1802 | ind_even_odd = even_odd_level(grid_level) |
|---|
| 1803 | |
|---|
| 1804 | ! |
|---|
| 1805 | !-- Restricted transfer only on finer levels with enough data. |
|---|
| 1806 | !-- Restricted transfer is not possible for levels smaller or equal to |
|---|
| 1807 | !-- 'switch to PE0 levels', since array bounds does not fit. Moreover, |
|---|
| 1808 | !-- it is not possible for the coarsest grid level, since the dimensions |
|---|
| 1809 | !-- of temp are not defined. For such cases, normal exchange_horiz is called. |
|---|
| 1810 | IF ( l > 1 .AND. l > mg_switch_to_pe0_level + 1 .AND. & |
|---|
| 1811 | ( ngp_xz(grid_level) >= 900 .OR. ngp_yz(grid_level) >= 900 ) ) THEN |
|---|
| 1812 | |
|---|
| 1813 | jys = nys_mg(grid_level-1) |
|---|
| 1814 | jyn = nyn_mg(grid_level-1) |
|---|
| 1815 | ixl = nxl_mg(grid_level-1) |
|---|
| 1816 | ixr = nxr_mg(grid_level-1) |
|---|
| 1817 | ALLOCATE( temp(nzb:nzt_mg(l-1)+1,jys-1:jyn+1,ixl-1:ixr+1) ) |
|---|
| 1818 | ! |
|---|
| 1819 | !-- Handling the even k Values |
|---|
| 1820 | !-- Collecting data for the north - south exchange |
|---|
| 1821 | !-- Since only every second value has to be transfered, data are stored |
|---|
| 1822 | !-- on the next coarser grid level, because the arrays on that level |
|---|
| 1823 | !-- have just the required size |
|---|
| 1824 | i1 = nxl_mg(grid_level-1) |
|---|
| 1825 | i2 = nxl_mg(grid_level-1) |
|---|
| 1826 | |
|---|
| 1827 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 1828 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 1829 | |
|---|
| 1830 | IF ( j == nys_mg(l) ) THEN |
|---|
| 1831 | !DIR$ IVDEP |
|---|
| 1832 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1833 | temp(k-ind_even_odd,jys,i1) = p_mg(k,j,i) |
|---|
| 1834 | ENDDO |
|---|
| 1835 | i1 = i1 + 1 |
|---|
| 1836 | |
|---|
| 1837 | ENDIF |
|---|
| 1838 | |
|---|
| 1839 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 1840 | !DIR$ IVDEP |
|---|
| 1841 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1842 | temp(k-ind_even_odd,jyn,i2) = p_mg(k,j,i) |
|---|
| 1843 | ENDDO |
|---|
| 1844 | i2 = i2 + 1 |
|---|
| 1845 | |
|---|
| 1846 | ENDIF |
|---|
| 1847 | |
|---|
| 1848 | ENDDO |
|---|
| 1849 | ENDDO |
|---|
| 1850 | |
|---|
| 1851 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 1852 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 1853 | |
|---|
| 1854 | IF ( j == nys_mg(l) ) THEN |
|---|
| 1855 | !DIR$ IVDEP |
|---|
| 1856 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1857 | temp(k-ind_even_odd,jys,i1) = p_mg(k,j,i) |
|---|
| 1858 | ENDDO |
|---|
| 1859 | i1 = i1 + 1 |
|---|
| 1860 | |
|---|
| 1861 | ENDIF |
|---|
| 1862 | |
|---|
| 1863 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 1864 | !DIR$ IVDEP |
|---|
| 1865 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1866 | temp(k-ind_even_odd,jyn,i2) = p_mg(k,j,i) |
|---|
| 1867 | ENDDO |
|---|
| 1868 | i2 = i2 + 1 |
|---|
| 1869 | |
|---|
| 1870 | ENDIF |
|---|
| 1871 | |
|---|
| 1872 | ENDDO |
|---|
| 1873 | ENDDO |
|---|
| 1874 | |
|---|
| 1875 | grid_level = grid_level-1 |
|---|
| 1876 | |
|---|
| 1877 | nxl = nxl_mg(grid_level) |
|---|
| 1878 | nys = nys_mg(grid_level) |
|---|
| 1879 | nxr = nxr_mg(grid_level) |
|---|
| 1880 | nyn = nyn_mg(grid_level) |
|---|
| 1881 | nzt = nzt_mg(grid_level) |
|---|
| 1882 | |
|---|
| 1883 | send_receive = 'ns' |
|---|
| 1884 | CALL exchange_horiz( temp, 1 ) |
|---|
| 1885 | |
|---|
| 1886 | grid_level = grid_level+1 |
|---|
| 1887 | |
|---|
| 1888 | i1 = nxl_mg(grid_level-1) |
|---|
| 1889 | i2 = nxl_mg(grid_level-1) |
|---|
| 1890 | |
|---|
| 1891 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 1892 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 1893 | |
|---|
| 1894 | IF ( j == nys_mg(l) ) THEN |
|---|
| 1895 | !DIR$ IVDEP |
|---|
| 1896 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1897 | p_mg(k,nyn_mg(l)+1,i) = temp(k-ind_even_odd,jyn+1,i1) |
|---|
| 1898 | ENDDO |
|---|
| 1899 | i1 = i1 + 1 |
|---|
| 1900 | |
|---|
| 1901 | ENDIF |
|---|
| 1902 | |
|---|
| 1903 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 1904 | !DIR$ IVDEP |
|---|
| 1905 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1906 | p_mg(k,nys_mg(l)-1,i) = temp(k-ind_even_odd,jys-1,i2) |
|---|
| 1907 | ENDDO |
|---|
| 1908 | i2 = i2 + 1 |
|---|
| 1909 | |
|---|
| 1910 | ENDIF |
|---|
| 1911 | |
|---|
| 1912 | ENDDO |
|---|
| 1913 | ENDDO |
|---|
| 1914 | |
|---|
| 1915 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 1916 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 1917 | |
|---|
| 1918 | IF ( j == nys_mg(l) ) THEN |
|---|
| 1919 | !DIR$ IVDEP |
|---|
| 1920 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1921 | p_mg(k,nyn_mg(l)+1,i) = temp(k-ind_even_odd,jyn+1,i1) |
|---|
| 1922 | ENDDO |
|---|
| 1923 | i1 = i1 + 1 |
|---|
| 1924 | |
|---|
| 1925 | ENDIF |
|---|
| 1926 | |
|---|
| 1927 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 1928 | !DIR$ IVDEP |
|---|
| 1929 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1930 | p_mg(k,nys_mg(l)-1,i) = temp(k-ind_even_odd,jys-1,i2) |
|---|
| 1931 | ENDDO |
|---|
| 1932 | i2 = i2 + 1 |
|---|
| 1933 | |
|---|
| 1934 | ENDIF |
|---|
| 1935 | |
|---|
| 1936 | ENDDO |
|---|
| 1937 | ENDDO |
|---|
| 1938 | |
|---|
| 1939 | ! |
|---|
| 1940 | !-- Collecting data for the left - right exchange |
|---|
| 1941 | !-- Since only every second value has to be transfered, data are stored |
|---|
| 1942 | !-- on the next coarser grid level, because the arrays on that level |
|---|
| 1943 | !-- have just the required size |
|---|
| 1944 | j1 = nys_mg(grid_level-1) |
|---|
| 1945 | j2 = nys_mg(grid_level-1) |
|---|
| 1946 | |
|---|
| 1947 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 1948 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 1949 | |
|---|
| 1950 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 1951 | !DIR$ IVDEP |
|---|
| 1952 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1953 | temp(k-ind_even_odd,j1,ixl) = p_mg(k,j,i) |
|---|
| 1954 | ENDDO |
|---|
| 1955 | j1 = j1 + 1 |
|---|
| 1956 | |
|---|
| 1957 | ENDIF |
|---|
| 1958 | |
|---|
| 1959 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 1960 | !DIR$ IVDEP |
|---|
| 1961 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1962 | temp(k-ind_even_odd,j2,ixr) = p_mg(k,j,i) |
|---|
| 1963 | ENDDO |
|---|
| 1964 | j2 = j2 + 1 |
|---|
| 1965 | |
|---|
| 1966 | ENDIF |
|---|
| 1967 | |
|---|
| 1968 | ENDDO |
|---|
| 1969 | ENDDO |
|---|
| 1970 | |
|---|
| 1971 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 1972 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 1973 | |
|---|
| 1974 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 1975 | !DIR$ IVDEP |
|---|
| 1976 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1977 | temp(k-ind_even_odd,j1,ixl) = p_mg(k,j,i) |
|---|
| 1978 | ENDDO |
|---|
| 1979 | j1 = j1 + 1 |
|---|
| 1980 | |
|---|
| 1981 | ENDIF |
|---|
| 1982 | |
|---|
| 1983 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 1984 | !DIR$ IVDEP |
|---|
| 1985 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 1986 | temp(k-ind_even_odd,j2,ixr) = p_mg(k,j,i) |
|---|
| 1987 | ENDDO |
|---|
| 1988 | j2 = j2 + 1 |
|---|
| 1989 | |
|---|
| 1990 | ENDIF |
|---|
| 1991 | |
|---|
| 1992 | ENDDO |
|---|
| 1993 | ENDDO |
|---|
| 1994 | |
|---|
| 1995 | grid_level = grid_level-1 |
|---|
| 1996 | send_receive = 'lr' |
|---|
| 1997 | |
|---|
| 1998 | CALL exchange_horiz( temp, 1 ) |
|---|
| 1999 | |
|---|
| 2000 | grid_level = grid_level+1 |
|---|
| 2001 | |
|---|
| 2002 | j1 = nys_mg(grid_level-1) |
|---|
| 2003 | j2 = nys_mg(grid_level-1) |
|---|
| 2004 | |
|---|
| 2005 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 2006 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 2007 | |
|---|
| 2008 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2009 | !DIR$ IVDEP |
|---|
| 2010 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2011 | p_mg(k,j,nxr_mg(l)+1) = temp(k-ind_even_odd,j1,ixr+1) |
|---|
| 2012 | ENDDO |
|---|
| 2013 | j1 = j1 + 1 |
|---|
| 2014 | |
|---|
| 2015 | ENDIF |
|---|
| 2016 | |
|---|
| 2017 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2018 | !DIR$ IVDEP |
|---|
| 2019 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2020 | p_mg(k,j,nxl_mg(l)-1) = temp(k-ind_even_odd,j2,ixl-1) |
|---|
| 2021 | ENDDO |
|---|
| 2022 | j2 = j2 + 1 |
|---|
| 2023 | |
|---|
| 2024 | ENDIF |
|---|
| 2025 | |
|---|
| 2026 | ENDDO |
|---|
| 2027 | ENDDO |
|---|
| 2028 | |
|---|
| 2029 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2030 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2031 | |
|---|
| 2032 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2033 | !DIR$ IVDEP |
|---|
| 2034 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2035 | p_mg(k,j,nxr_mg(l)+1) = temp(k-ind_even_odd,j1,ixr+1) |
|---|
| 2036 | ENDDO |
|---|
| 2037 | j1 = j1 + 1 |
|---|
| 2038 | |
|---|
| 2039 | ENDIF |
|---|
| 2040 | |
|---|
| 2041 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2042 | !DIR$ IVDEP |
|---|
| 2043 | DO k = ind_even_odd+1, nzt_mg(l) |
|---|
| 2044 | p_mg(k,j,nxl_mg(l)-1) = temp(k-ind_even_odd,j2,ixl-1) |
|---|
| 2045 | ENDDO |
|---|
| 2046 | j2 = j2 + 1 |
|---|
| 2047 | |
|---|
| 2048 | ENDIF |
|---|
| 2049 | |
|---|
| 2050 | ENDDO |
|---|
| 2051 | ENDDO |
|---|
| 2052 | |
|---|
| 2053 | ! |
|---|
| 2054 | !-- Now handling the even k values |
|---|
| 2055 | !-- Collecting data for the north - south exchange |
|---|
| 2056 | !-- Since only every second value has to be transfered, data are stored |
|---|
| 2057 | !-- on the next coarser grid level, because the arrays on that level |
|---|
| 2058 | !-- have just the required size |
|---|
| 2059 | i1 = nxl_mg(grid_level-1) |
|---|
| 2060 | i2 = nxl_mg(grid_level-1) |
|---|
| 2061 | |
|---|
| 2062 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 2063 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2064 | |
|---|
| 2065 | IF ( j == nys_mg(l) ) THEN |
|---|
| 2066 | !DIR$ IVDEP |
|---|
| 2067 | DO k = nzb+1, ind_even_odd |
|---|
| 2068 | temp(k,jys,i1) = p_mg(k,j,i) |
|---|
| 2069 | ENDDO |
|---|
| 2070 | i1 = i1 + 1 |
|---|
| 2071 | |
|---|
| 2072 | ENDIF |
|---|
| 2073 | |
|---|
| 2074 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 2075 | !DIR$ IVDEP |
|---|
| 2076 | DO k = nzb+1, ind_even_odd |
|---|
| 2077 | temp(k,jyn,i2) = p_mg(k,j,i) |
|---|
| 2078 | ENDDO |
|---|
| 2079 | i2 = i2 + 1 |
|---|
| 2080 | |
|---|
| 2081 | ENDIF |
|---|
| 2082 | |
|---|
| 2083 | ENDDO |
|---|
| 2084 | ENDDO |
|---|
| 2085 | |
|---|
| 2086 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2087 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 2088 | |
|---|
| 2089 | IF ( j == nys_mg(l) ) THEN |
|---|
| 2090 | !DIR$ IVDEP |
|---|
| 2091 | DO k = nzb+1, ind_even_odd |
|---|
| 2092 | temp(k,jys,i1) = p_mg(k,j,i) |
|---|
| 2093 | ENDDO |
|---|
| 2094 | i1 = i1 + 1 |
|---|
| 2095 | |
|---|
| 2096 | ENDIF |
|---|
| 2097 | |
|---|
| 2098 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 2099 | !DIR$ IVDEP |
|---|
| 2100 | DO k = nzb+1, ind_even_odd |
|---|
| 2101 | temp(k,jyn,i2) = p_mg(k,j,i) |
|---|
| 2102 | ENDDO |
|---|
| 2103 | i2 = i2 + 1 |
|---|
| 2104 | |
|---|
| 2105 | ENDIF |
|---|
| 2106 | |
|---|
| 2107 | ENDDO |
|---|
| 2108 | ENDDO |
|---|
| 2109 | |
|---|
| 2110 | grid_level = grid_level-1 |
|---|
| 2111 | |
|---|
| 2112 | send_receive = 'ns' |
|---|
| 2113 | CALL exchange_horiz( temp, 1 ) |
|---|
| 2114 | |
|---|
| 2115 | grid_level = grid_level+1 |
|---|
| 2116 | |
|---|
| 2117 | i1 = nxl_mg(grid_level-1) |
|---|
| 2118 | i2 = nxl_mg(grid_level-1) |
|---|
| 2119 | |
|---|
| 2120 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 2121 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2122 | |
|---|
| 2123 | IF ( j == nys_mg(l) ) THEN |
|---|
| 2124 | !DIR$ IVDEP |
|---|
| 2125 | DO k = nzb+1, ind_even_odd |
|---|
| 2126 | p_mg(k,nyn_mg(l)+1,i) = temp(k,jyn+1,i1) |
|---|
| 2127 | ENDDO |
|---|
| 2128 | i1 = i1 + 1 |
|---|
| 2129 | |
|---|
| 2130 | ENDIF |
|---|
| 2131 | |
|---|
| 2132 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 2133 | !DIR$ IVDEP |
|---|
| 2134 | DO k = nzb+1, ind_even_odd |
|---|
| 2135 | p_mg(k,nys_mg(l)-1,i) = temp(k,jys-1,i2) |
|---|
| 2136 | ENDDO |
|---|
| 2137 | i2 = i2 + 1 |
|---|
| 2138 | |
|---|
| 2139 | ENDIF |
|---|
| 2140 | |
|---|
| 2141 | ENDDO |
|---|
| 2142 | ENDDO |
|---|
| 2143 | |
|---|
| 2144 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2145 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 2146 | |
|---|
| 2147 | IF ( j == nys_mg(l) ) THEN |
|---|
| 2148 | !DIR$ IVDEP |
|---|
| 2149 | DO k = nzb+1, ind_even_odd |
|---|
| 2150 | p_mg(k,nyn_mg(l)+1,i) = temp(k,jyn+1,i1) |
|---|
| 2151 | ENDDO |
|---|
| 2152 | i1 = i1 + 1 |
|---|
| 2153 | |
|---|
| 2154 | ENDIF |
|---|
| 2155 | |
|---|
| 2156 | IF ( j == nyn_mg(l) ) THEN |
|---|
| 2157 | !DIR$ IVDEP |
|---|
| 2158 | DO k = nzb+1, ind_even_odd |
|---|
| 2159 | p_mg(k,nys_mg(l)-1,i) = temp(k,jys-1,i2) |
|---|
| 2160 | ENDDO |
|---|
| 2161 | i2 = i2 + 1 |
|---|
| 2162 | |
|---|
| 2163 | ENDIF |
|---|
| 2164 | |
|---|
| 2165 | ENDDO |
|---|
| 2166 | ENDDO |
|---|
| 2167 | |
|---|
| 2168 | j1 = nys_mg(grid_level-1) |
|---|
| 2169 | j2 = nys_mg(grid_level-1) |
|---|
| 2170 | |
|---|
| 2171 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 2172 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2173 | |
|---|
| 2174 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2175 | !DIR$ IVDEP |
|---|
| 2176 | DO k = nzb+1, ind_even_odd |
|---|
| 2177 | temp(k,j1,ixl) = p_mg(k,j,i) |
|---|
| 2178 | ENDDO |
|---|
| 2179 | j1 = j1 + 1 |
|---|
| 2180 | |
|---|
| 2181 | ENDIF |
|---|
| 2182 | |
|---|
| 2183 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2184 | !DIR$ IVDEP |
|---|
| 2185 | DO k = nzb+1, ind_even_odd |
|---|
| 2186 | temp(k,j2,ixr) = p_mg(k,j,i) |
|---|
| 2187 | ENDDO |
|---|
| 2188 | j2 = j2 + 1 |
|---|
| 2189 | |
|---|
| 2190 | ENDIF |
|---|
| 2191 | |
|---|
| 2192 | ENDDO |
|---|
| 2193 | ENDDO |
|---|
| 2194 | |
|---|
| 2195 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2196 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 2197 | |
|---|
| 2198 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2199 | !DIR$ IVDEP |
|---|
| 2200 | DO k = nzb+1, ind_even_odd |
|---|
| 2201 | temp(k,j1,ixl) = p_mg(k,j,i) |
|---|
| 2202 | ENDDO |
|---|
| 2203 | j1 = j1 + 1 |
|---|
| 2204 | |
|---|
| 2205 | ENDIF |
|---|
| 2206 | |
|---|
| 2207 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2208 | !DIR$ IVDEP |
|---|
| 2209 | DO k = nzb+1, ind_even_odd |
|---|
| 2210 | temp(k,j2,ixr) = p_mg(k,j,i) |
|---|
| 2211 | ENDDO |
|---|
| 2212 | j2 = j2 + 1 |
|---|
| 2213 | |
|---|
| 2214 | ENDIF |
|---|
| 2215 | |
|---|
| 2216 | ENDDO |
|---|
| 2217 | ENDDO |
|---|
| 2218 | |
|---|
| 2219 | grid_level = grid_level-1 |
|---|
| 2220 | |
|---|
| 2221 | send_receive = 'lr' |
|---|
| 2222 | CALL exchange_horiz( temp, 1 ) |
|---|
| 2223 | |
|---|
| 2224 | grid_level = grid_level+1 |
|---|
| 2225 | |
|---|
| 2226 | nxl = nxl_mg(grid_level) |
|---|
| 2227 | nys = nys_mg(grid_level) |
|---|
| 2228 | nxr = nxr_mg(grid_level) |
|---|
| 2229 | nyn = nyn_mg(grid_level) |
|---|
| 2230 | nzt = nzt_mg(grid_level) |
|---|
| 2231 | |
|---|
| 2232 | j1 = nys_mg(grid_level-1) |
|---|
| 2233 | j2 = nys_mg(grid_level-1) |
|---|
| 2234 | |
|---|
| 2235 | DO i = nxl_mg(l), nxr_mg(l), 2 |
|---|
| 2236 | DO j = nys_mg(l) + (color-1), nyn_mg(l), 2 |
|---|
| 2237 | |
|---|
| 2238 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2239 | !DIR$ IVDEP |
|---|
| 2240 | DO k = nzb+1, ind_even_odd |
|---|
| 2241 | p_mg(k,j,nxr_mg(l)+1) = temp(k,j1,ixr+1) |
|---|
| 2242 | ENDDO |
|---|
| 2243 | j1 = j1 + 1 |
|---|
| 2244 | |
|---|
| 2245 | ENDIF |
|---|
| 2246 | |
|---|
| 2247 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2248 | !DIR$ IVDEP |
|---|
| 2249 | DO k = nzb+1, ind_even_odd |
|---|
| 2250 | p_mg(k,j,nxl_mg(l)-1) = temp(k,j2,ixl-1) |
|---|
| 2251 | ENDDO |
|---|
| 2252 | j2 = j2 + 1 |
|---|
| 2253 | |
|---|
| 2254 | ENDIF |
|---|
| 2255 | |
|---|
| 2256 | ENDDO |
|---|
| 2257 | ENDDO |
|---|
| 2258 | |
|---|
| 2259 | DO i = nxl_mg(l)+1, nxr_mg(l), 2 |
|---|
| 2260 | DO j = nys_mg(l) + 2 - color, nyn_mg(l), 2 |
|---|
| 2261 | |
|---|
| 2262 | IF ( i == nxl_mg(l) ) THEN |
|---|
| 2263 | !DIR$ IVDEP |
|---|
| 2264 | DO k = nzb+1, ind_even_odd |
|---|
| 2265 | p_mg(k,j,nxr_mg(l)+1) = temp(k,j1,ixr+1) |
|---|
| 2266 | ENDDO |
|---|
| 2267 | j1 = j1 + 1 |
|---|
| 2268 | |
|---|
| 2269 | ENDIF |
|---|
| 2270 | |
|---|
| 2271 | IF ( i == nxr_mg(l) ) THEN |
|---|
| 2272 | !DIR$ IVDEP |
|---|
| 2273 | DO k = nzb+1, ind_even_odd |
|---|
| 2274 | p_mg(k,j,nxl_mg(l)-1) = temp(k,j2,ixl-1) |
|---|
| 2275 | ENDDO |
|---|
| 2276 | j2 = j2 + 1 |
|---|
| 2277 | |
|---|
| 2278 | ENDIF |
|---|
| 2279 | |
|---|
| 2280 | ENDDO |
|---|
| 2281 | ENDDO |
|---|
| 2282 | |
|---|
| 2283 | DEALLOCATE( temp ) |
|---|
| 2284 | |
|---|
| 2285 | ELSE |
|---|
| 2286 | |
|---|
| 2287 | ! |
|---|
| 2288 | !-- Standard horizontal ghost boundary exchange for small coarse grid |
|---|
| 2289 | !-- levels, where the transfer time is latency bound |
|---|
| 2290 | CALL exchange_horiz( p_mg, 1 ) |
|---|
| 2291 | |
|---|
| 2292 | ENDIF |
|---|
| 2293 | |
|---|
| 2294 | ! |
|---|
| 2295 | !-- Reset values to default PALM setup |
|---|
| 2296 | synchronous_exchange = synchronous_exchange_save |
|---|
| 2297 | send_receive = 'al' |
|---|
| 2298 | #else |
|---|
| 2299 | |
|---|
| 2300 | ! |
|---|
| 2301 | !-- Standard horizontal ghost boundary exchange for small coarse grid |
|---|
| 2302 | !-- levels, where the transfer time is latency bound |
|---|
| 2303 | CALL exchange_horiz( p_mg, 1 ) |
|---|
| 2304 | #endif |
|---|
| 2305 | |
|---|
| 2306 | END SUBROUTINE special_exchange_horiz |
|---|
| 2307 | |
|---|
| 2308 | END MODULE poismg_mod |
|---|
