[1682] | 1 | !> @file palm.f90 |
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[1036] | 2 | !--------------------------------------------------------------------------------! |
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| 3 | ! This file is part of PALM. |
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| 4 | ! |
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| 5 | ! PALM is free software: you can redistribute it and/or modify it under the terms |
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| 6 | ! of the GNU General Public License as published by the Free Software Foundation, |
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| 7 | ! either version 3 of the License, or (at your option) any later version. |
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| 8 | ! |
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| 9 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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| 10 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
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| 11 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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| 12 | ! |
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| 13 | ! You should have received a copy of the GNU General Public License along with |
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| 14 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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| 15 | ! |
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[1310] | 16 | ! Copyright 1997-2014 Leibniz Universitaet Hannover |
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[1036] | 17 | !--------------------------------------------------------------------------------! |
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| 18 | ! |
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[484] | 19 | ! Current revisions: |
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[1] | 20 | ! ----------------- |
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[1779] | 21 | ! setting of nest_domain and coupling_char moved to the pmci |
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[1748] | 22 | ! |
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[1321] | 23 | ! Former revisions: |
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| 24 | ! ----------------- |
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| 25 | ! $Id: palm.f90 1779 2016-03-03 08:01:28Z raasch $ |
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| 26 | ! |
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[1765] | 27 | ! 1764 2016-02-28 12:45:19Z raasch |
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| 28 | ! cpp-statements for nesting removed, communicator settings cleaned up |
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| 29 | ! |
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[1763] | 30 | ! 1762 2016-02-25 12:31:13Z hellstea |
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| 31 | ! Introduction of nested domain feature |
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| 32 | ! |
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[1748] | 33 | ! 1747 2016-02-08 12:25:53Z raasch |
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| 34 | ! OpenACC-adjustment for new surface layer parameterization |
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| 35 | ! |
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[1683] | 36 | ! 1682 2015-10-07 23:56:08Z knoop |
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| 37 | ! Code annotations made doxygen readable |
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| 38 | ! |
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[1669] | 39 | ! 1668 2015-09-23 13:45:36Z raasch |
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| 40 | ! warning replaced by abort in case of failed user interface check |
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| 41 | ! |
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[1667] | 42 | ! 1666 2015-09-23 07:31:10Z raasch |
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| 43 | ! check for user's interface version added |
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| 44 | ! |
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[1483] | 45 | ! 1482 2014-10-18 12:34:45Z raasch |
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| 46 | ! adjustments for using CUDA-aware OpenMPI |
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| 47 | ! |
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[1469] | 48 | ! 1468 2014-09-24 14:06:57Z maronga |
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| 49 | ! Adapted for use on up to 6-digit processor cores |
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| 50 | ! |
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[1403] | 51 | ! 1402 2014-05-09 14:25:13Z raasch |
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| 52 | ! location messages added |
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| 53 | ! |
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[1375] | 54 | ! 1374 2014-04-25 12:55:07Z raasch |
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| 55 | ! bugfix: various modules added |
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| 56 | ! |
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[1321] | 57 | ! 1320 2014-03-20 08:40:49Z raasch |
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[1320] | 58 | ! ONLY-attribute added to USE-statements, |
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| 59 | ! kind-parameters added to all INTEGER and REAL declaration statements, |
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| 60 | ! kinds are defined in new module kinds, |
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| 61 | ! old module precision_kind is removed, |
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| 62 | ! revision history before 2012 removed, |
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| 63 | ! comment fields (!:) to be used for variable explanations added to |
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| 64 | ! all variable declaration statements |
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[77] | 65 | ! |
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[1319] | 66 | ! 1318 2014-03-17 13:35:16Z raasch |
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| 67 | ! module interfaces removed |
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| 68 | ! |
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[1242] | 69 | ! 1241 2013-10-30 11:36:58Z heinze |
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| 70 | ! initialization of nuding and large scale forcing from external file |
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| 71 | ! |
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[1222] | 72 | ! 1221 2013-09-10 08:59:13Z raasch |
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| 73 | ! +wall_flags_00, rflags_invers, rflags_s_inner in copyin statement |
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| 74 | ! |
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[1213] | 75 | ! 1212 2013-08-15 08:46:27Z raasch |
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| 76 | ! +tri in copyin statement |
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| 77 | ! |
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[1182] | 78 | ! 1179 2013-06-14 05:57:58Z raasch |
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| 79 | ! ref_state added to copyin-list |
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| 80 | ! |
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[1114] | 81 | ! 1113 2013-03-10 02:48:14Z raasch |
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| 82 | ! openACC statements modified |
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| 83 | ! |
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[1112] | 84 | ! 1111 2013-03-08 23:54:10Z raasch |
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| 85 | ! openACC statements updated |
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| 86 | ! |
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[1093] | 87 | ! 1092 2013-02-02 11:24:22Z raasch |
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| 88 | ! unused variables removed |
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| 89 | ! |
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[1037] | 90 | ! 1036 2012-10-22 13:43:42Z raasch |
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| 91 | ! code put under GPL (PALM 3.9) |
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| 92 | ! |
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[1017] | 93 | ! 1015 2012-09-27 09:23:24Z raasch |
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[863] | 94 | ! Version number changed from 3.8 to 3.8a. |
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[1017] | 95 | ! OpenACC statements added + code changes required for GPU optimization |
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[863] | 96 | ! |
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[850] | 97 | ! 849 2012-03-15 10:35:09Z raasch |
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| 98 | ! write_particles renamed lpm_write_restart_file |
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| 99 | ! |
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[1] | 100 | ! Revision 1.1 1997/07/24 11:23:35 raasch |
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| 101 | ! Initial revision |
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| 102 | ! |
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| 103 | ! |
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| 104 | ! Description: |
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| 105 | ! ------------ |
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[1682] | 106 | !> Large-Eddy Simulation (LES) model for the convective boundary layer, |
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| 107 | !> optimized for use on parallel machines (implementation realized using the |
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| 108 | !> Message Passing Interface (MPI)). The model can also be run on vector machines |
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| 109 | !> (less well optimized) and workstations. Versions for the different types of |
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| 110 | !> machines are controlled via cpp-directives. |
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| 111 | !> Model runs are only feasible using the ksh-script mrun. |
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[1] | 112 | !------------------------------------------------------------------------------! |
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[1682] | 113 | PROGRAM palm |
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| 114 | |
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[1] | 115 | |
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[1374] | 116 | USE arrays_3d |
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[1] | 117 | |
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[1320] | 118 | USE control_parameters, & |
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| 119 | ONLY: coupling_char, coupling_mode, do2d_at_begin, do3d_at_begin, & |
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[1666] | 120 | io_blocks, io_group, large_scale_forcing, message_string, & |
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[1762] | 121 | nest_domain, nudging, simulated_time, simulated_time_chr, & |
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[1666] | 122 | user_interface_current_revision, & |
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| 123 | user_interface_required_revision, version, wall_heatflux, & |
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| 124 | write_binary |
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[1320] | 125 | |
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| 126 | USE cpulog, & |
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| 127 | ONLY: cpu_log, log_point, cpu_statistics |
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| 128 | |
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[1374] | 129 | USE grid_variables, & |
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| 130 | ONLY: fxm, fxp, fym, fyp, fwxm, fwxp, fwym, fwyp, wall_e_x, wall_e_y, & |
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| 131 | wall_u, wall_v, wall_w_x, wall_w_y |
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| 132 | |
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| 133 | USE indices, & |
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[1666] | 134 | ONLY: ngp_2dh, ngp_2dh_s_inner, nzb_diff_s_inner, nzb_diff_s_outer, & |
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| 135 | nzb_diff_u, nzb_diff_v, nzb_s_inner, nzb_s_outer, nzb_u_inner, & |
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| 136 | nzb_u_outer, nzb_v_inner, nzb_v_outer, nzb_w_inner, & |
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| 137 | nzb_w_outer, rflags_invers, rflags_s_inner, wall_flags_0, & |
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| 138 | wall_flags_00 |
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[1374] | 139 | |
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[1320] | 140 | USE kinds |
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| 141 | |
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| 142 | USE ls_forcing_mod, & |
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| 143 | ONLY: init_ls_forcing |
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| 144 | |
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| 145 | USE nudge_mod, & |
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| 146 | ONLY: init_nudge |
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| 147 | |
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| 148 | USE particle_attributes, & |
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| 149 | ONLY: particle_advection |
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| 150 | |
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[1] | 151 | USE pegrid |
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| 152 | |
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[1762] | 153 | USE pmc_interface, & |
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[1764] | 154 | ONLY: cpl_id, nested_run, pmci_init, pmci_modelconfiguration |
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[1762] | 155 | |
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[1374] | 156 | USE statistics, & |
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| 157 | ONLY: hom, rmask, weight_pres, weight_substep |
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| 158 | |
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[1747] | 159 | USE surface_layer_fluxes_mod, & |
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| 160 | ONLY: pt1, qv1, uv_total |
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| 161 | |
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[1015] | 162 | #if defined( __openacc ) |
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| 163 | USE OPENACC |
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| 164 | #endif |
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| 165 | |
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[1] | 166 | IMPLICIT NONE |
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| 167 | |
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| 168 | ! |
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| 169 | !-- Local variables |
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[1682] | 170 | CHARACTER(LEN=9) :: time_to_string !< |
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| 171 | CHARACTER(LEN=10) :: env_string !< to store string of environment var |
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| 172 | INTEGER(iwp) :: env_stat !< to hold status of GET_ENV |
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| 173 | INTEGER(iwp) :: i !< |
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| 174 | INTEGER(iwp) :: myid_openmpi !< OpenMPI local rank for CUDA aware MPI |
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[1015] | 175 | #if defined( __openacc ) |
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[1682] | 176 | REAL(wp), DIMENSION(100) :: acc_dum !< |
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[1015] | 177 | #endif |
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[1] | 178 | |
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[1539] | 179 | version = 'PALM 4.0' |
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[1666] | 180 | user_interface_required_revision = 'r1663' |
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[75] | 181 | |
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[1] | 182 | #if defined( __parallel ) |
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| 183 | ! |
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| 184 | !-- MPI initialisation. comm2d is preliminary set, because |
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| 185 | !-- it will be defined in init_pegrid but is used before in cpu_log. |
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| 186 | CALL MPI_INIT( ierr ) |
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[1762] | 187 | |
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| 188 | ! |
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| 189 | !-- Initialize the coupling for nested-domain runs |
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[1764] | 190 | !-- comm_palm is the communicator which includes all PEs (MPI processes) |
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| 191 | !-- available for this (nested) model. If it is not a nested run, comm_palm |
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| 192 | !-- is returned as MPI_COMM_WORLD |
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[1762] | 193 | CALL pmci_init( comm_palm ) |
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| 194 | comm2d = comm_palm |
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[1764] | 195 | ! |
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| 196 | !-- Get the (preliminary) number of MPI processes and the local PE-id (in case |
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| 197 | !-- of a further communicator splitting in init_coupling, these numbers will |
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| 198 | !-- be changed in init_pegrid). |
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| 199 | IF ( nested_run ) THEN |
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[1762] | 200 | |
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[1764] | 201 | CALL MPI_COMM_SIZE( comm_palm, numprocs, ierr ) |
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| 202 | CALL MPI_COMM_RANK( comm_palm, myid, ierr ) |
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[1762] | 203 | |
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[1764] | 204 | ELSE |
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| 205 | |
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| 206 | CALL MPI_COMM_SIZE( MPI_COMM_WORLD, numprocs, ierr ) |
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| 207 | CALL MPI_COMM_RANK( MPI_COMM_WORLD, myid, ierr ) |
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[1] | 208 | ! |
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[1764] | 209 | !-- Initialize PE topology in case of coupled atmosphere-ocean runs (comm_palm |
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| 210 | !-- will be splitted in init_coupling) |
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| 211 | CALL init_coupling |
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| 212 | ENDIF |
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[102] | 213 | #endif |
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| 214 | |
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[1015] | 215 | #if defined( __openacc ) |
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[102] | 216 | ! |
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[1482] | 217 | !-- Get the local MPI rank in case of CUDA aware OpenMPI. Important, if there |
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| 218 | !-- is more than one accelerator board on the node |
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| 219 | CALL GET_ENVIRONMENT_VARIABLE('OMPI_COMM_WORLD_LOCAL_RANK', & |
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| 220 | VALUE=env_string, STATUS=env_stat ) |
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| 221 | READ( env_string, '(I1)' ) myid_openmpi |
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| 222 | PRINT*, '### local_rank = ', myid_openmpi, ' status=',env_stat |
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| 223 | ! |
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[1015] | 224 | !-- Get the number of accelerator boards per node and assign the MPI processes |
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| 225 | !-- to these boards |
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[1092] | 226 | PRINT*, '*** ACC_DEVICE_NVIDIA = ', ACC_DEVICE_NVIDIA |
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[1015] | 227 | num_acc_per_node = ACC_GET_NUM_DEVICES( ACC_DEVICE_NVIDIA ) |
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[1092] | 228 | IF ( numprocs == 1 .AND. num_acc_per_node > 0 ) num_acc_per_node = 1 |
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[1482] | 229 | PRINT*, '*** myid = ', myid_openmpi, ' num_acc_per_node = ', num_acc_per_node |
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| 230 | acc_rank = MOD( myid_openmpi, num_acc_per_node ) |
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[1015] | 231 | CALL ACC_SET_DEVICE_NUM ( acc_rank, ACC_DEVICE_NVIDIA ) |
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| 232 | ! |
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| 233 | !-- Test output (to be removed later) |
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[1482] | 234 | WRITE (*,'(A,I6,A,I3,A,I3,A,I3)') '*** Connect MPI-Task ', myid_openmpi, & |
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| 235 | ' to CPU ', acc_rank, ' Devices: ', & |
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| 236 | num_acc_per_node, ' connected to:', & |
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[1015] | 237 | ACC_GET_DEVICE_NUM( ACC_DEVICE_NVIDIA ) |
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| 238 | #endif |
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[1092] | 239 | |
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[1015] | 240 | ! |
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| 241 | !-- Ensure that OpenACC first attaches the GPU devices by copying a dummy data |
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| 242 | !-- region |
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| 243 | !$acc data copyin( acc_dum ) |
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| 244 | |
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| 245 | ! |
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[1] | 246 | !-- Initialize measuring of the CPU-time remaining to the run |
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| 247 | CALL local_tremain_ini |
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| 248 | |
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| 249 | ! |
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| 250 | !-- Start of total CPU time measuring. |
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| 251 | CALL cpu_log( log_point(1), 'total', 'start' ) |
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| 252 | CALL cpu_log( log_point(2), 'initialisation', 'start' ) |
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| 253 | |
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| 254 | ! |
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[206] | 255 | !-- Open a file for debug output |
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[1468] | 256 | WRITE (myid_char,'(''_'',I6.6)') myid |
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[206] | 257 | OPEN( 9, FILE='DEBUG'//TRIM( coupling_char )//myid_char, FORM='FORMATTED' ) |
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| 258 | |
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| 259 | ! |
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[1] | 260 | !-- Initialize dvrp logging. Also, one PE maybe split from the global |
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| 261 | !-- communicator for doing the dvrp output. In that case, the number of |
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| 262 | !-- PEs available for PALM is reduced by one and communicator comm_palm |
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| 263 | !-- is changed respectively. |
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| 264 | #if defined( __parallel ) |
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| 265 | CALL MPI_COMM_RANK( comm_palm, myid, ierr ) |
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| 266 | ! |
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[102] | 267 | !-- TEST OUTPUT (TO BE REMOVED) |
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| 268 | WRITE(9,*) '*** coupling_mode = "', TRIM( coupling_mode ), '"' |
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| 269 | CALL LOCAL_FLUSH( 9 ) |
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[215] | 270 | IF ( TRIM( coupling_mode ) /= 'uncoupled' ) THEN |
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| 271 | PRINT*, '*** PE', myid, ' Global target PE:', target_id, & |
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| 272 | TRIM( coupling_mode ) |
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| 273 | ENDIF |
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[102] | 274 | #endif |
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| 275 | |
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[108] | 276 | CALL init_dvrp_logging |
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| 277 | |
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[102] | 278 | ! |
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[108] | 279 | !-- Read control parameters from NAMELIST files and read environment-variables |
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| 280 | CALL parin |
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| 281 | |
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| 282 | ! |
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[1666] | 283 | !-- Check for the user's interface version |
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| 284 | IF ( user_interface_current_revision /= user_interface_required_revision ) & |
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| 285 | THEN |
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| 286 | message_string = 'current user-interface revision "' // & |
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| 287 | TRIM( user_interface_current_revision ) // '" does ' // & |
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| 288 | 'not match the required revision ' // & |
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| 289 | TRIM( user_interface_required_revision ) |
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[1668] | 290 | CALL message( 'palm', 'PA0169', 1, 2, 0, 6, 0 ) |
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[1666] | 291 | ENDIF |
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| 292 | |
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| 293 | ! |
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[108] | 294 | !-- Determine processor topology and local array indices |
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| 295 | CALL init_pegrid |
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| 296 | |
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| 297 | ! |
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[1] | 298 | !-- Generate grid parameters |
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| 299 | CALL init_grid |
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| 300 | |
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| 301 | ! |
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[1241] | 302 | !-- Initialize nudging if required |
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| 303 | IF ( nudging ) THEN |
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| 304 | CALL init_nudge |
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| 305 | ENDIF |
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| 306 | |
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| 307 | ! |
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| 308 | !-- Initialize reading of large scale forcing from external file - if required |
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| 309 | IF ( large_scale_forcing ) THEN |
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| 310 | CALL init_ls_forcing |
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| 311 | ENDIF |
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| 312 | |
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| 313 | ! |
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[1] | 314 | !-- Check control parameters and deduce further quantities |
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| 315 | CALL check_parameters |
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| 316 | |
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| 317 | ! |
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| 318 | !-- Initialize all necessary variables |
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| 319 | CALL init_3d_model |
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| 320 | |
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| 321 | ! |
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[1762] | 322 | !-- Coupling protocol setup for nested-domain runs |
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[1764] | 323 | IF ( nested_run ) THEN |
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| 324 | CALL pmci_modelconfiguration |
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| 325 | ENDIF |
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[1762] | 326 | |
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| 327 | ! |
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[1] | 328 | !-- Output of program header |
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| 329 | IF ( myid == 0 ) CALL header |
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| 330 | |
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| 331 | CALL cpu_log( log_point(2), 'initialisation', 'stop' ) |
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| 332 | |
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| 333 | ! |
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| 334 | !-- Set start time in format hh:mm:ss |
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| 335 | simulated_time_chr = time_to_string( simulated_time ) |
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| 336 | |
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| 337 | ! |
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| 338 | !-- If required, output of initial arrays |
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| 339 | IF ( do2d_at_begin ) THEN |
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| 340 | CALL data_output_2d( 'xy', 0 ) |
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| 341 | CALL data_output_2d( 'xz', 0 ) |
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| 342 | CALL data_output_2d( 'yz', 0 ) |
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| 343 | ENDIF |
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| 344 | IF ( do3d_at_begin ) THEN |
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| 345 | CALL data_output_3d( 0 ) |
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| 346 | ENDIF |
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| 347 | |
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| 348 | ! |
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[1015] | 349 | !-- Declare and initialize variables in the accelerator memory with their |
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| 350 | !-- host values |
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[1113] | 351 | !$acc data copyin( d, diss, e, e_p, kh, km, p, pt, pt_p, q, ql, tend, te_m, tpt_m, tu_m, tv_m, tw_m, u, u_p, v, vpt, v_p, w, w_p ) & |
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[1212] | 352 | !$acc copyin( tri, tric, dzu, ddzu, ddzw, dd2zu, l_grid, l_wall, ptdf_x, ptdf_y, pt_init, rdf, rdf_sc, ref_state, ug, u_init, vg, v_init, zu, zw ) & |
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[1747] | 353 | !$acc copyin( hom, ol, pt1, qs, qsws, qswst, qv1, rif_wall, shf, ts, tswst, us, usws, uswst, uv_total, vsws, vswst, z0, z0h ) & |
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[1015] | 354 | !$acc copyin( fxm, fxp, fym, fyp, fwxm, fwxp, fwym, fwyp, nzb_diff_s_inner, nzb_diff_s_outer, nzb_diff_u ) & |
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| 355 | !$acc copyin( nzb_diff_v, nzb_s_inner, nzb_s_outer, nzb_u_inner ) & |
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| 356 | !$acc copyin( nzb_u_outer, nzb_v_inner, nzb_v_outer, nzb_w_inner ) & |
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[1221] | 357 | !$acc copyin( nzb_w_outer, rflags_invers, rflags_s_inner, rmask, wall_heatflux, wall_e_x, wall_e_y, wall_u, wall_v, wall_w_x, wall_w_y, wall_flags_0, wall_flags_00 ) & |
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| 358 | !$acc copyin( ngp_2dh, ngp_2dh_s_inner ) & |
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[1113] | 359 | !$acc copyin( weight_pres, weight_substep ) |
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[1015] | 360 | ! |
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[495] | 361 | !-- Integration of the model equations using timestep-scheme |
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[1] | 362 | CALL time_integration |
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| 363 | |
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| 364 | ! |
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[495] | 365 | !-- If required, write binary data for restart runs |
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| 366 | IF ( write_binary(1:4) == 'true' ) THEN |
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[759] | 367 | |
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| 368 | CALL cpu_log( log_point(22), 'write_3d_binary', 'start' ) |
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| 369 | |
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[1402] | 370 | CALL location_message( 'writing restart data', .FALSE. ) |
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| 371 | |
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[759] | 372 | CALL check_open( 14 ) |
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| 373 | |
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| 374 | DO i = 0, io_blocks-1 |
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| 375 | IF ( i == io_group ) THEN |
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[1] | 376 | ! |
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[759] | 377 | !-- Write flow field data |
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| 378 | CALL write_3d_binary |
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| 379 | ENDIF |
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| 380 | #if defined( __parallel ) |
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| 381 | CALL MPI_BARRIER( comm2d, ierr ) |
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| 382 | #endif |
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| 383 | ENDDO |
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| 384 | |
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[1402] | 385 | CALL location_message( 'finished', .TRUE. ) |
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| 386 | |
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[759] | 387 | CALL cpu_log( log_point(22), 'write_3d_binary', 'stop' ) |
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| 388 | |
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[495] | 389 | ! |
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| 390 | !-- If required, write particle data |
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[849] | 391 | IF ( particle_advection ) CALL lpm_write_restart_file |
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[495] | 392 | ENDIF |
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[1] | 393 | |
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| 394 | ! |
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| 395 | !-- If required, repeat output of header including the required CPU-time |
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| 396 | IF ( myid == 0 ) CALL header |
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| 397 | ! |
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| 398 | !-- If required, final user-defined actions, and |
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| 399 | !-- last actions on the open files and close files. Unit 14 was opened |
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| 400 | !-- in write_3d_binary but it is closed here, to allow writing on this |
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| 401 | !-- unit in routine user_last_actions. |
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| 402 | CALL cpu_log( log_point(4), 'last actions', 'start' ) |
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[759] | 403 | DO i = 0, io_blocks-1 |
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| 404 | IF ( i == io_group ) THEN |
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| 405 | CALL user_last_actions |
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| 406 | IF ( write_binary(1:4) == 'true' ) CALL close_file( 14 ) |
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| 407 | ENDIF |
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| 408 | #if defined( __parallel ) |
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| 409 | CALL MPI_BARRIER( comm2d, ierr ) |
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| 410 | #endif |
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| 411 | ENDDO |
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[1] | 412 | CALL close_file( 0 ) |
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| 413 | CALL close_dvrp |
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| 414 | CALL cpu_log( log_point(4), 'last actions', 'stop' ) |
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| 415 | |
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[102] | 416 | #if defined( __mpi2 ) |
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[1] | 417 | ! |
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[206] | 418 | !-- Test exchange via intercommunicator in case of a MPI-2 coupling |
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[102] | 419 | IF ( coupling_mode == 'atmosphere_to_ocean' ) THEN |
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| 420 | i = 12345 + myid |
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| 421 | CALL MPI_SEND( i, 1, MPI_INTEGER, myid, 11, comm_inter, ierr ) |
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| 422 | ELSEIF ( coupling_mode == 'ocean_to_atmosphere' ) THEN |
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| 423 | CALL MPI_RECV( i, 1, MPI_INTEGER, myid, 11, comm_inter, status, ierr ) |
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| 424 | PRINT*, '### myid: ', myid, ' received from atmosphere: i = ', i |
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| 425 | ENDIF |
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| 426 | #endif |
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| 427 | |
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| 428 | ! |
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[1015] | 429 | !-- Close the OpenACC dummy data region |
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| 430 | !$acc end data |
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| 431 | !$acc end data |
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| 432 | |
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| 433 | ! |
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[1] | 434 | !-- Take final CPU-time for CPU-time analysis |
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| 435 | CALL cpu_log( log_point(1), 'total', 'stop' ) |
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| 436 | CALL cpu_statistics |
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| 437 | |
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| 438 | #if defined( __parallel ) |
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| 439 | CALL MPI_FINALIZE( ierr ) |
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| 440 | #endif |
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| 441 | |
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| 442 | END PROGRAM palm |
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