source: palm/trunk/SOURCE/time_integration.f90 @ 1917

Last change on this file since 1917 was 1917, checked in by witha, 5 years ago

Corrected documented changes in the file headers

  • Property svn:keywords set to Id
File size: 44.5 KB
Line 
1!> @file time_integration.f90
2!--------------------------------------------------------------------------------!
3! This file is part of PALM.
4!
5! PALM is free software: you can redistribute it and/or modify it under the terms
6! of the GNU General Public License as published by the Free Software Foundation,
7! either version 3 of the License, or (at your option) any later version.
8!
9! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
10! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
11! A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
12!
13! You should have received a copy of the GNU General Public License along with
14! PALM. If not, see <http://www.gnu.org/licenses/>.
15!
16! Copyright 1997-2016 Leibniz Universitaet Hannover
17!--------------------------------------------------------------------------------!
18!
19! Current revisions:
20! ------------------
21!
22!
23! Former revisions:
24! -----------------
25! $Id: time_integration.f90 1917 2016-05-27 14:28:12Z witha $
26!
27! 1914 2016-05-26 14:44:07Z witha
28! Added call for wind turbine model
29!
30! 1878 2016-04-19 12:30:36Z hellstea
31! Synchronization for nested runs rewritten
32!
33! 1853 2016-04-11 09:00:35Z maronga
34! Adjusted for use with radiation_scheme = constant
35!
36! 1849 2016-04-08 11:33:18Z hoffmann
37! Adapted for modularization of microphysics
38!
39! 1833 2016-04-07 14:23:03Z raasch
40! spectrum renamed spectra_mod, spectra related variables moved to spectra_mod
41!
42! 1831 2016-04-07 13:15:51Z hoffmann
43! turbulence renamed collision_turbulence
44!
45! 1822 2016-04-07 07:49:42Z hoffmann
46! icloud_scheme replaced by microphysics_*
47!
48! 1808 2016-04-05 19:44:00Z raasch
49! output message in case unscheduled radiation calls removed
50!
51! 1797 2016-03-21 16:50:28Z raasch
52! introduction of different datatransfer modes
53!
54! 1791 2016-03-11 10:41:25Z raasch
55! call of pmci_update_new removed
56!
57! 1786 2016-03-08 05:49:27Z raasch
58! +module spectrum
59!
60! 1783 2016-03-06 18:36:17Z raasch
61! switch back of netcdf data format for mask output moved to the mask output
62! routine
63!
64! 1781 2016-03-03 15:12:23Z raasch
65! some pmc calls removed at the beginning (before timeloop),
66! pmc initialization moved to the main program
67!
68! 1764 2016-02-28 12:45:19Z raasch
69! PMC_ACTIVE flags removed,
70! bugfix: nest synchronization after first call of timestep
71!
72! 1762 2016-02-25 12:31:13Z hellstea
73! Introduction of nested domain feature
74!
75! 1736 2015-12-04 08:56:33Z raasch
76! no perturbations added to total domain if energy limit has been set zero
77!
78! 1691 2015-10-26 16:17:44Z maronga
79! Added option for spin-ups without land surface and radiation models. Moved calls
80! for radiation and lan surface schemes.
81!
82! 1682 2015-10-07 23:56:08Z knoop
83! Code annotations made doxygen readable
84!
85! 1671 2015-09-25 03:29:37Z raasch
86! bugfix: ghostpoint exchange for array diss in case that sgs velocities are used
87! for particles
88!
89! 1585 2015-04-30 07:05:52Z maronga
90! Moved call of radiation scheme. Added support for RRTM
91!
92! 1551 2015-03-03 14:18:16Z maronga
93! Added interface for different radiation schemes.
94!
95! 1496 2014-12-02 17:25:50Z maronga
96! Added calls for the land surface model and radiation scheme
97!
98! 1402 2014-05-09 14:25:13Z raasch
99! location messages modified
100!
101! 1384 2014-05-02 14:31:06Z raasch
102! location messages added
103!
104! 1380 2014-04-28 12:40:45Z heinze
105! CALL of nudge_ref added
106! bc_pt_t_val and bc_q_t_val are updated in case nudging is used
107!
108! 1365 2014-04-22 15:03:56Z boeske
109! Reset sums_ls_l to zero at each timestep
110! +sums_ls_l
111! Calculation of reference state (previously in subroutine calc_mean_profile)
112
113! 1342 2014-03-26 17:04:47Z kanani
114! REAL constants defined as wp-kind
115!
116! 1320 2014-03-20 08:40:49Z raasch
117! ONLY-attribute added to USE-statements,
118! kind-parameters added to all INTEGER and REAL declaration statements,
119! kinds are defined in new module kinds,
120! old module precision_kind is removed,
121! revision history before 2012 removed,
122! comment fields (!:) to be used for variable explanations added to
123! all variable declaration statements
124! 1318 2014-03-17 13:35:16Z raasch
125! module interfaces removed
126!
127! 1308 2014-03-13 14:58:42Z fricke
128! +netcdf_data_format_save
129! For masked data, parallel netcdf output is not tested so far, hence
130! netcdf_data_format is switched back to non-paralell output.
131!
132! 1276 2014-01-15 13:40:41Z heinze
133! Use LSF_DATA also in case of Dirichlet bottom boundary condition for scalars
134!
135! 1257 2013-11-08 15:18:40Z raasch
136! acc-update-host directive for timestep removed
137!
138! 1241 2013-10-30 11:36:58Z heinze
139! Generalize calc_mean_profile for wider use
140! Determine shf and qsws in dependence on data from LSF_DATA
141! Determine ug and vg in dependence on data from LSF_DATA
142! 1221 2013-09-10 08:59:13Z raasch
143! host update of arrays before timestep is called
144!
145! 1179 2013-06-14 05:57:58Z raasch
146! mean profiles for reference state are only calculated if required,
147! small bugfix for background communication
148!
149! 1171 2013-05-30 11:27:45Z raasch
150! split of prognostic_equations deactivated (comment lines), for the time being
151!
152! 1128 2013-04-12 06:19:32Z raasch
153! asynchronous transfer of ghost point data realized for acc-optimized version:
154! prognostic_equations are first called two times for those points required for
155! the left-right and north-south exchange, respectively, and then for the
156! remaining points,
157! those parts requiring global communication moved from prognostic_equations to
158! here
159!
160! 1115 2013-03-26 18:16:16Z hoffmann
161! calculation of qr and nr is restricted to precipitation
162!
163! 1113 2013-03-10 02:48:14Z raasch
164! GPU-porting of boundary conditions,
165! openACC directives updated
166! formal parameter removed from routine boundary_conds
167!
168! 1111 2013-03-08 23:54:10Z raasch
169! +internal timestep counter for cpu statistics added,
170! openACC directives updated
171!
172! 1092 2013-02-02 11:24:22Z raasch
173! unused variables removed
174!
175! 1065 2012-11-22 17:42:36Z hoffmann
176! exchange of diss (dissipation rate) in case of turbulence = .TRUE. added
177!
178! 1053 2012-11-13 17:11:03Z hoffmann
179! exchange of ghost points for nr, qr added
180!
181! 1036 2012-10-22 13:43:42Z raasch
182! code put under GPL (PALM 3.9)
183!
184! 1019 2012-09-28 06:46:45Z raasch
185! non-optimized version of prognostic_equations removed
186!
187! 1015 2012-09-27 09:23:24Z raasch
188! +call of prognostic_equations_acc
189!
190! 1001 2012-09-13 14:08:46Z raasch
191! all actions concerning leapfrog- and upstream-spline-scheme removed
192!
193! 849 2012-03-15 10:35:09Z raasch
194! advec_particles renamed lpm, first_call_advec_particles renamed first_call_lpm
195!
196! 825 2012-02-19 03:03:44Z raasch
197! wang_collision_kernel renamed wang_kernel
198!
199! Revision 1.1  1997/08/11 06:19:04  raasch
200! Initial revision
201!
202!
203! Description:
204! ------------
205!> Integration in time of the model equations, statistical analysis and graphic
206!> output
207!------------------------------------------------------------------------------!
208 SUBROUTINE time_integration
209 
210
211    USE advec_ws,                                                              &
212        ONLY:  ws_statistics
213
214    USE arrays_3d,                                                             &
215        ONLY:  diss, dzu, e, e_p, nr_p, prho, pt, pt_p, pt_init, q_init, q,    &
216               ql, ql_c, ql_v, ql_vp, qr_p, q_p, ref_state, rho, sa_p, tend,   &
217               u, u_p, v, vpt, v_p, w, w_p
218
219    USE calc_mean_profile_mod,                                                 &
220        ONLY:  calc_mean_profile
221
222    USE control_parameters,                                                    &
223        ONLY:  advected_distance_x, advected_distance_y, average_count_3d,     &
224               averaging_interval, averaging_interval_pr,                      &
225               bc_lr_cyc, bc_ns_cyc, bc_pt_t_val,                              &
226               bc_q_t_val, call_psolver_at_all_substeps, cloud_droplets,       &
227               cloud_physics, constant_flux_layer, constant_heatflux,          &
228               create_disturbances, dopr_n, constant_diffusion, coupling_mode, &
229               coupling_start_time, current_timestep_number,                   &
230               disturbance_created, disturbance_energy_limit, dist_range,      &
231               do_sum, dt_3d, dt_averaging_input, dt_averaging_input_pr,       &
232               dt_coupling, dt_data_output_av, dt_disturb, dt_do2d_xy,         &
233               dt_do2d_xz, dt_do2d_yz, dt_do3d, dt_domask,dt_dopts, dt_dopr,   &
234               dt_dopr_listing, dt_dots, dt_dvrp, dt_run_control,              &
235               end_time, first_call_lpm, galilei_transformation, humidity,     &
236               intermediate_timestep_count,                                    &
237               intermediate_timestep_count_max, large_scale_forcing,           &
238               loop_optimization, lsf_surf, lsf_vert, masks,                   &
239               microphysics_seifert, mid, nest_domain,                         &
240               neutral, nr_timesteps_this_run, nudging,                        &
241               ocean, on_device, passive_scalar,                               &
242               prho_reference, pt_reference, pt_slope_offset, random_heatflux, &
243               run_coupled, simulated_time, simulated_time_chr,                &
244               skip_time_do2d_xy, skip_time_do2d_xz, skip_time_do2d_yz,        &
245               skip_time_do3d, skip_time_domask, skip_time_dopr,               &
246               skip_time_data_output_av, sloping_surface,                      &
247               stop_dt, terminate_coupled, terminate_run, timestep_scheme,     &
248               time_coupling, time_do2d_xy, time_do2d_xz, time_do2d_yz,        &
249               time_do3d, time_domask, time_dopr, time_dopr_av,                &
250               time_dopr_listing, time_dopts, time_dosp, time_dosp_av,         &
251               time_dots, time_do_av, time_do_sla, time_disturb, time_dvrp,    &
252               time_run_control, time_since_reference_point,                   &
253               turbulent_inflow, use_initial_profile_as_reference,             &
254               use_single_reference_value, u_gtrans, v_gtrans, ws_scheme_mom,  &
255               ws_scheme_sca
256
257    USE cpulog,                                                                &
258        ONLY:  cpu_log, log_point, log_point_s
259
260    USE indices,                                                               &
261        ONLY:  i_left, i_right, j_north, j_south, nbgp, nx, nxl, nxlg, nxr,    &
262               nxrg, nyn, nys, nzb, nzt, nzb_u_inner, nzb_v_inner
263
264    USE interaction_droplets_ptq_mod,                                          &
265        ONLY:  interaction_droplets_ptq
266
267    USE kinds
268
269    USE land_surface_model_mod,                                                &
270        ONLY:  land_surface, lsm_energy_balance, lsm_soil_model,               &
271               skip_time_do_lsm
272
273    USE ls_forcing_mod,                                                        &
274        ONLY:  ls_forcing_surf, ls_forcing_vert
275
276    USE microphysics_mod,                                                      &
277        ONLY: collision_turbulence
278
279    USE nudge_mod,                                                             &
280        ONLY:  calc_tnudge, nudge_ref
281
282    USE particle_attributes,                                                   &
283        ONLY:  particle_advection, particle_advection_start,                   &
284               use_sgs_for_particles, wang_kernel
285
286    USE pegrid
287
288    USE pmc_interface,                                                         &
289        ONLY:  client_to_server, nested_run, nesting_mode,                     &
290               pmci_datatrans, pmci_ensure_nest_mass_conservation,             &
291               pmci_synchronize, server_to_client
292
293    USE production_e_mod,                                                      &
294        ONLY:  production_e_init
295
296    USE progress_bar,                                                          &
297        ONLY:  finish_progress_bar, output_progress_bar
298
299    USE prognostic_equations_mod,                                              &
300        ONLY:  prognostic_equations_acc, prognostic_equations_cache,           &
301               prognostic_equations_vector
302
303    USE radiation_model_mod,                                                   &
304        ONLY: dt_radiation, force_radiation_call, radiation,                   &
305              radiation_clearsky, radiation_constant, radiation_rrtmg,         &
306              radiation_scheme, skip_time_do_radiation, time_radiation
307
308    USE spectra_mod,                                                           &
309        ONLY: average_count_sp, averaging_interval_sp, calc_spectra, dt_dosp,  &
310              skip_time_dosp
311
312    USE statistics,                                                            &
313        ONLY:  flow_statistics_called, hom, pr_palm, sums_ls_l
314
315    USE surface_layer_fluxes_mod,                                              &
316        ONLY:  surface_layer_fluxes
317
318    USE user_actions_mod,                                                      &
319        ONLY:  user_actions
320
321    USE wind_turbine_model_mod,                                                &
322        ONLY:  wind_turbine, wtm_forces
323
324    IMPLICIT NONE
325
326    CHARACTER (LEN=9) ::  time_to_string          !<
327
328!
329!-- At the beginning of a simulation determine the time step as well as
330!-- determine and print out the run control parameters
331    IF ( simulated_time == 0.0_wp )  CALL timestep
332
333!
334!-- Synchronize the timestep in case of nested run.
335    IF ( nested_run )  THEN
336!
337!--    Synchronization by unifying the time step.
338!--    Global minimum of all time-steps is used for all.
339       CALL pmci_synchronize
340    ENDIF
341
342    CALL run_control
343
344!
345!-- Data exchange between coupled models in case that a call has been omitted
346!-- at the end of the previous run of a job chain.
347    IF ( coupling_mode /= 'uncoupled'  .AND.  run_coupled )  THEN
348!
349!--    In case of model termination initiated by the local model the coupler
350!--    must not be called because this would again cause an MPI hang.
351       DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
352          CALL surface_coupler
353          time_coupling = time_coupling - dt_coupling
354       ENDDO
355       IF (time_coupling == 0.0_wp .AND. time_since_reference_point < dt_coupling)&
356       THEN
357          time_coupling = time_since_reference_point
358       ENDIF
359    ENDIF
360
361#if defined( __dvrp_graphics )
362!
363!-- Time measurement with dvrp software 
364    CALL DVRP_LOG_EVENT( 2, current_timestep_number )
365#endif
366
367    CALL location_message( 'start with time-stepping', .TRUE. )
368!
369!-- Start of the time loop
370    DO  WHILE ( simulated_time < end_time  .AND.  .NOT. stop_dt  .AND. &
371                .NOT. terminate_run )
372
373       CALL cpu_log( log_point_s(10), 'timesteps', 'start' )
374
375!
376!--    Determine size of next time step
377       IF ( simulated_time /= 0.0_wp )  THEN
378          CALL timestep
379!
380!--       Synchronize the timestep in case of nested run.
381          IF ( nested_run )  THEN
382!
383!--          Synchronize by unifying the time step.
384!--          Global minimum of all time-steps is used for all.     
385             CALL pmci_synchronize
386          ENDIF
387       ENDIF
388
389!
390!--    Determine ug, vg and w_subs in dependence on data from external file
391!--    LSF_DATA
392       IF ( large_scale_forcing .AND. lsf_vert )  THEN
393           CALL ls_forcing_vert ( simulated_time )
394           sums_ls_l = 0.0_wp
395       ENDIF
396
397!
398!--    Set pt_init and q_init to the current profiles taken from
399!--    NUDGING_DATA
400       IF ( nudging )  THEN
401           CALL nudge_ref ( simulated_time )
402!
403!--        Store temperature gradient at the top boundary for possible Neumann
404!--        boundary condition
405           bc_pt_t_val = ( pt_init(nzt+1) - pt_init(nzt) ) / dzu(nzt+1)
406           bc_q_t_val  = ( q_init(nzt+1) - q_init(nzt) ) / dzu(nzt+1)
407       ENDIF
408
409!
410!--    Execute the user-defined actions
411       CALL user_actions( 'before_timestep' )
412
413!
414!--    Calculate forces by wind turbines
415       IF ( wind_turbine )  THEN
416
417          CALL cpu_log( log_point(55), 'wind_turbine', 'start' )
418
419          CALL wtm_forces
420
421          CALL cpu_log( log_point(55), 'wind_turbine', 'stop' )
422
423       ENDIF       
424       
425!
426!--    Start of intermediate step loop
427       intermediate_timestep_count = 0
428       DO  WHILE ( intermediate_timestep_count < &
429                   intermediate_timestep_count_max )
430
431          intermediate_timestep_count = intermediate_timestep_count + 1
432
433!
434!--       Set the steering factors for the prognostic equations which depend
435!--       on the timestep scheme
436          CALL timestep_scheme_steering
437
438!
439!--       Calculate those variables needed in the tendency terms which need
440!--       global communication
441          IF ( .NOT. use_single_reference_value  .AND. &
442               .NOT. use_initial_profile_as_reference )  THEN
443!
444!--          Horizontally averaged profiles to be used as reference state in
445!--          buoyancy terms (WARNING: only the respective last call of
446!--          calc_mean_profile defines the reference state!)
447             IF ( .NOT. neutral )  THEN
448                CALL calc_mean_profile( pt, 4 )
449                ref_state(:)  = hom(:,1,4,0) ! this is used in the buoyancy term
450             ENDIF
451             IF ( ocean )  THEN
452                CALL calc_mean_profile( rho, 64 )
453                ref_state(:)  = hom(:,1,64,0)
454             ENDIF
455             IF ( humidity )  THEN
456                CALL calc_mean_profile( vpt, 44 )
457                ref_state(:)  = hom(:,1,44,0)
458             ENDIF
459
460          ENDIF
461
462          IF ( .NOT. constant_diffusion )  CALL production_e_init
463          IF ( ( ws_scheme_mom .OR. ws_scheme_sca )  .AND.  &
464               intermediate_timestep_count == 1 )  CALL ws_statistics
465!
466!--       In case of nudging calculate current nudging time scale and horizontal
467!--       means of u, v, pt and q
468          IF ( nudging )  THEN
469             CALL calc_tnudge( simulated_time )
470             CALL calc_mean_profile( u, 1 )
471             CALL calc_mean_profile( v, 2 )
472             CALL calc_mean_profile( pt, 4 )
473             CALL calc_mean_profile( q, 41 )
474          ENDIF
475
476!
477!--       Solve the prognostic equations. A fast cache optimized version with
478!--       only one single loop is used in case of Piascek-Williams advection
479!--       scheme. NEC vector machines use a different version, because
480!--       in the other versions a good vectorization is prohibited due to
481!--       inlining problems.
482          IF ( loop_optimization == 'cache' )  THEN
483             CALL prognostic_equations_cache
484          ELSEIF ( loop_optimization == 'vector' )  THEN
485             CALL prognostic_equations_vector
486          ELSEIF ( loop_optimization == 'acc' )  THEN
487             i_left  = nxl;         i_right = nxr
488             j_south = nys;         j_north = nyn
489             CALL prognostic_equations_acc
490
491!             i_left  = nxl;         i_right = nxl+nbgp-1
492!             j_south = nys;         j_north = nyn
493!             CALL prognostic_equations_acc
494!             i_left  = nxr-nbgp+1;  i_right = nxr
495!             j_south = nys;         j_north = nyn
496!             CALL prognostic_equations_acc
497
498!
499!--          Exchange of ghost points (lateral boundary conditions)
500             IF ( background_communication )  THEN
501
502                CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
503               
504                send_receive = 'lr'
505                sendrecv_in_background = .TRUE.
506                req          = 0
507                req_count    = 0
508
509                IF ( numprocs == 1 )  THEN    ! workaround for single-core GPU runs
510                   on_device = .TRUE.         ! to be removed after complete porting
511                ELSE                          ! of ghost point exchange
512                   !$acc update host( e_p, pt_p, u_p, v_p, w_p )
513                ENDIF
514
515                CALL exchange_horiz( u_p, nbgp )
516                CALL exchange_horiz( v_p, nbgp )
517                CALL exchange_horiz( w_p, nbgp )
518                CALL exchange_horiz( pt_p, nbgp )
519                IF ( .NOT. constant_diffusion )  CALL exchange_horiz( e_p, nbgp )
520                IF ( ocean )  THEN
521                   CALL exchange_horiz( sa_p, nbgp )
522                   CALL exchange_horiz( rho, nbgp )
523                  CALL exchange_horiz( prho, nbgp )
524                ENDIF
525                IF (humidity  .OR.  passive_scalar)  THEN
526                   CALL exchange_horiz( q_p, nbgp )
527                   IF ( cloud_physics .AND. microphysics_seifert )  THEN
528                      CALL exchange_horiz( qr_p, nbgp )
529                      CALL exchange_horiz( nr_p, nbgp )
530                   ENDIF
531                ENDIF
532                IF ( cloud_droplets )  THEN
533                   CALL exchange_horiz( ql, nbgp )
534                   CALL exchange_horiz( ql_c, nbgp )
535                   CALL exchange_horiz( ql_v, nbgp )
536                   CALL exchange_horiz( ql_vp, nbgp )
537                ENDIF
538                IF ( wang_kernel  .OR.  collision_turbulence  .OR.             &
539                     use_sgs_for_particles )  THEN
540                   CALL exchange_horiz( diss, nbgp )
541                ENDIF
542
543                IF ( numprocs == 1 )  THEN    ! workaround for single-core GPU runs
544                   on_device = .FALSE.        ! to be removed after complete porting
545                ELSE                          ! of ghost point exchange
546                   !$acc update device( e_p, pt_p, u_p, v_p, w_p )
547                ENDIF
548
549                sendrecv_in_background = .FALSE.
550
551                CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'pause' )
552
553             ENDIF
554
555!             i_left  = nxl+nbgp;    i_right = nxr-nbgp
556!             j_south = nys;         j_north = nys+nbgp-1
557!             CALL prognostic_equations_acc
558!             i_left  = nxl+nbgp;    i_right = nxr-nbgp
559!             j_south = nyn-nbgp+1;  j_north = nyn
560!             CALL prognostic_equations_acc
561
562             IF ( background_communication )  THEN
563                CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'start' )
564#if defined( __parallel )
565                CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
566#endif
567                CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'pause' )
568
569                CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'continue' )
570
571                send_receive = 'ns'
572                sendrecv_in_background = .TRUE.
573                req          = 0
574                req_count    = 0
575
576                IF ( numprocs == 1 )  THEN    ! workaround for single-core GPU runs
577                   on_device = .TRUE.         ! to be removed after complete porting
578                ELSE                          ! of ghost point exchange
579                   !$acc update host( e_p, pt_p, u_p, v_p, w_p )
580                ENDIF
581
582                CALL exchange_horiz( u_p, nbgp )
583                CALL exchange_horiz( v_p, nbgp )
584                CALL exchange_horiz( w_p, nbgp )
585                CALL exchange_horiz( pt_p, nbgp )
586                IF ( .NOT. constant_diffusion )  CALL exchange_horiz( e_p, nbgp )
587                IF ( ocean )  THEN
588                   CALL exchange_horiz( sa_p, nbgp )
589                   CALL exchange_horiz( rho, nbgp )
590                  CALL exchange_horiz( prho, nbgp )
591                ENDIF
592                IF (humidity  .OR.  passive_scalar)  THEN
593                   CALL exchange_horiz( q_p, nbgp )
594                   IF ( cloud_physics .AND. microphysics_seifert )  THEN
595                      CALL exchange_horiz( qr_p, nbgp )
596                      CALL exchange_horiz( nr_p, nbgp )
597                   ENDIF
598                ENDIF
599                IF ( cloud_droplets )  THEN
600                   CALL exchange_horiz( ql, nbgp )
601                   CALL exchange_horiz( ql_c, nbgp )
602                   CALL exchange_horiz( ql_v, nbgp )
603                   CALL exchange_horiz( ql_vp, nbgp )
604                ENDIF
605                IF ( wang_kernel  .OR.  collision_turbulence  .OR.             &
606                     use_sgs_for_particles )  THEN
607                   CALL exchange_horiz( diss, nbgp )
608                ENDIF
609
610                IF ( numprocs == 1 )  THEN    ! workaround for single-core GPU runs
611                   on_device = .FALSE.        ! to be removed after complete porting
612                ELSE                          ! of ghost point exchange
613                   !$acc update device( e_p, pt_p, u_p, v_p, w_p )
614                ENDIF
615
616                sendrecv_in_background = .FALSE.
617
618                CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
619
620             ENDIF
621
622!             i_left  = nxl+nbgp;    i_right = nxr-nbgp
623!             j_south = nys+nbgp;    j_north = nyn-nbgp
624!             CALL prognostic_equations_acc
625
626             IF ( background_communication )  THEN
627                CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'continue' )
628#if defined( __parallel )
629                CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
630#endif
631                send_receive = 'al'
632                CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'stop' )
633             ENDIF
634
635          ENDIF
636
637!
638!--       Particle transport/physics with the Lagrangian particle model
639!--       (only once during intermediate steps, because it uses an Euler-step)
640!--       ### particle model should be moved before prognostic_equations, in order
641!--       to regard droplet interactions directly
642          IF ( particle_advection  .AND.                         &
643               simulated_time >= particle_advection_start  .AND. &
644               intermediate_timestep_count == 1 )  THEN
645             CALL lpm
646             first_call_lpm = .FALSE.
647          ENDIF
648
649!
650!--       Interaction of droplets with temperature and specific humidity.
651!--       Droplet condensation and evaporation is calculated within
652!--       advec_particles.
653          IF ( cloud_droplets  .AND.  &
654               intermediate_timestep_count == intermediate_timestep_count_max )&
655          THEN
656             CALL interaction_droplets_ptq
657          ENDIF
658
659!
660!--       Exchange of ghost points (lateral boundary conditions)
661          IF ( .NOT. background_communication )  THEN
662
663             CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
664
665             IF ( numprocs == 1 )  THEN    ! workaround for single-core GPU runs
666                on_device = .TRUE.         ! to be removed after complete porting
667             ELSE                          ! of ghost point exchange
668                !$acc update host( e_p, pt_p, u_p, v_p, w_p )
669             ENDIF
670
671             CALL exchange_horiz( u_p, nbgp )
672             CALL exchange_horiz( v_p, nbgp )
673             CALL exchange_horiz( w_p, nbgp )
674             CALL exchange_horiz( pt_p, nbgp )
675             IF ( .NOT. constant_diffusion )  CALL exchange_horiz( e_p, nbgp )
676             IF ( ocean )  THEN
677                CALL exchange_horiz( sa_p, nbgp )
678                CALL exchange_horiz( rho, nbgp )
679                CALL exchange_horiz( prho, nbgp )
680             ENDIF
681             IF (humidity  .OR.  passive_scalar)  THEN
682                CALL exchange_horiz( q_p, nbgp )
683                IF ( cloud_physics .AND. microphysics_seifert )  THEN
684                   CALL exchange_horiz( qr_p, nbgp )
685                   CALL exchange_horiz( nr_p, nbgp )
686                ENDIF
687             ENDIF
688             IF ( cloud_droplets )  THEN
689                CALL exchange_horiz( ql, nbgp )
690                CALL exchange_horiz( ql_c, nbgp )
691                CALL exchange_horiz( ql_v, nbgp )
692                CALL exchange_horiz( ql_vp, nbgp )
693             ENDIF
694             IF ( wang_kernel  .OR.  collision_turbulence  .OR.                &
695                  use_sgs_for_particles )  THEN
696                CALL exchange_horiz( diss, nbgp )
697             ENDIF
698
699             IF ( numprocs == 1 )  THEN    ! workaround for single-core GPU runs
700                on_device = .FALSE.        ! to be removed after complete porting
701             ELSE                          ! of ghost point exchange
702                !$acc update device( e_p, pt_p, u_p, v_p, w_p )
703             ENDIF
704
705             CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
706
707          ENDIF
708
709!
710!--       Boundary conditions for the prognostic quantities (except of the
711!--       velocities at the outflow in case of a non-cyclic lateral wall)
712          CALL boundary_conds
713
714!
715!--       Swap the time levels in preparation for the next time step.
716          CALL swap_timelevel
717
718          IF ( nested_run )  THEN
719
720             CALL cpu_log( log_point(60), 'nesting', 'start' )
721!
722!--          Domain nesting. The data transfer subroutines pmci_server_datatrans
723!--          and pmci_client_datatatrans are called inside the wrapper
724!--          subroutine pmci_datatrans according to the control parameters
725!--          nesting_mode and nesting_datatransfer_mode.
726!--          TO_DO: why is nesting_mode given as a parameter here?
727             CALL pmci_datatrans( nesting_mode )
728
729             IF ( nesting_mode == 'two-way' )  THEN
730!
731!--             Exchange_horiz is needed for all server-domains after the
732!--             anterpolation
733                CALL exchange_horiz( u, nbgp )
734                CALL exchange_horiz( v, nbgp )
735                CALL exchange_horiz( w, nbgp )
736                CALL exchange_horiz( pt, nbgp )
737                IF ( humidity  .OR.  passive_scalar )  THEN
738                   CALL exchange_horiz( q, nbgp )
739                ENDIF
740                IF ( .NOT. constant_diffusion )  CALL exchange_horiz( e, nbgp )
741             ENDIF
742!
743!--          Correct the w top-BC in nest domains to ensure mass conservation.
744!--          This action must never be done for the root domain.
745             IF ( nest_domain )  THEN
746                CALL pmci_ensure_nest_mass_conservation
747             ENDIF
748
749             CALL cpu_log( log_point(60), 'nesting', 'stop' )
750
751          ENDIF
752
753!
754!--       Temperature offset must be imposed at cyclic boundaries in x-direction
755!--       when a sloping surface is used
756          IF ( sloping_surface )  THEN
757             IF ( nxl ==  0 )  pt(:,:,nxlg:nxl-1) = pt(:,:,nxlg:nxl-1) - &
758                                                    pt_slope_offset
759             IF ( nxr == nx )  pt(:,:,nxr+1:nxrg) = pt(:,:,nxr+1:nxrg) + &
760                                                    pt_slope_offset
761          ENDIF
762
763!
764!--       Impose a turbulent inflow using the recycling method
765          IF ( turbulent_inflow )  CALL  inflow_turbulence
766
767!
768!--       Impose a random perturbation on the horizontal velocity field
769          IF ( create_disturbances  .AND.                                      &
770               ( call_psolver_at_all_substeps  .AND.                           &
771               intermediate_timestep_count == intermediate_timestep_count_max )&
772          .OR. ( .NOT. call_psolver_at_all_substeps  .AND.                     &
773               intermediate_timestep_count == 1 ) )                            &
774          THEN
775             time_disturb = time_disturb + dt_3d
776             IF ( time_disturb >= dt_disturb )  THEN
777                !$acc update host( u, v )
778                IF ( numprocs == 1 )  on_device = .FALSE.  ! workaround, remove later
779                IF ( disturbance_energy_limit /= 0.0_wp  .AND.                 &
780                     hom(nzb+5,1,pr_palm,0) < disturbance_energy_limit )  THEN
781                   CALL disturb_field( nzb_u_inner, tend, u )
782                   CALL disturb_field( nzb_v_inner, tend, v )
783                ELSEIF ( .NOT. bc_lr_cyc  .OR.  .NOT. bc_ns_cyc )  THEN
784!
785!--                Runs with a non-cyclic lateral wall need perturbations
786!--                near the inflow throughout the whole simulation
787                   dist_range = 1
788                   CALL disturb_field( nzb_u_inner, tend, u )
789                   CALL disturb_field( nzb_v_inner, tend, v )
790                   dist_range = 0
791                ENDIF
792                IF ( numprocs == 1 )  on_device = .TRUE.  ! workaround, remove later
793                !$acc update device( u, v )
794                time_disturb = time_disturb - dt_disturb
795             ENDIF
796          ENDIF
797
798!
799!--       Reduce the velocity divergence via the equation for perturbation
800!--       pressure.
801          IF ( intermediate_timestep_count == 1  .OR. &
802                call_psolver_at_all_substeps )  THEN
803             CALL pres
804          ENDIF
805
806!
807!--       If required, compute liquid water content
808          IF ( cloud_physics )  THEN
809             CALL calc_liquid_water_content
810             !$acc update device( ql )
811          ENDIF
812!
813!--       If required, compute virtual potential temperature
814          IF ( humidity )  THEN
815             CALL compute_vpt
816             !$acc update device( vpt )
817          ENDIF
818
819!
820!--       Compute the diffusion quantities
821          IF ( .NOT. constant_diffusion )  THEN
822
823!
824!--          Determine surface fluxes shf and qsws and surface values
825!--          pt_surface and q_surface in dependence on data from external
826!--          file LSF_DATA respectively
827             IF ( ( large_scale_forcing .AND. lsf_surf ) .AND. &
828                 intermediate_timestep_count == intermediate_timestep_count_max )&
829             THEN
830                CALL ls_forcing_surf ( simulated_time )
831             ENDIF
832
833!
834!--          First the vertical fluxes in the surface (constant flux) layer are computed
835             IF ( constant_flux_layer )  THEN
836                CALL cpu_log( log_point(19), 'surface_layer_fluxes', 'start' )
837                CALL surface_layer_fluxes
838                CALL cpu_log( log_point(19), 'surface_layer_fluxes', 'stop' )
839             ENDIF
840
841!
842!--          If required, solve the energy balance for the surface and run soil
843!--          model
844             IF ( land_surface .AND. simulated_time > skip_time_do_lsm)  THEN
845
846                CALL cpu_log( log_point(54), 'land_surface', 'start' )
847                CALL lsm_energy_balance
848                CALL lsm_soil_model
849                CALL cpu_log( log_point(54), 'land_surface', 'stop' )
850             ENDIF
851!
852!--          Compute the diffusion coefficients
853             CALL cpu_log( log_point(17), 'diffusivities', 'start' )
854             IF ( .NOT. humidity ) THEN
855                IF ( ocean )  THEN
856                   CALL diffusivities( prho, prho_reference )
857                ELSE
858                   CALL diffusivities( pt, pt_reference )
859                ENDIF
860             ELSE
861                CALL diffusivities( vpt, pt_reference )
862             ENDIF
863             CALL cpu_log( log_point(17), 'diffusivities', 'stop' )
864
865          ENDIF
866
867!
868!--       If required, calculate radiative fluxes and heating rates
869          IF ( radiation .AND. intermediate_timestep_count                     &
870               == intermediate_timestep_count_max .AND. simulated_time >    &
871               skip_time_do_radiation )  THEN
872
873               time_radiation = time_radiation + dt_3d
874
875             IF ( time_radiation >= dt_radiation .OR. force_radiation_call )   &
876             THEN
877
878                CALL cpu_log( log_point(50), 'radiation', 'start' )
879
880                IF ( .NOT. force_radiation_call )  THEN
881                   time_radiation = time_radiation - dt_radiation
882                ENDIF
883
884                IF ( radiation_scheme == 'clear-sky' )  THEN
885                   CALL radiation_clearsky
886                ELSEIF ( radiation_scheme == 'rrtmg' )  THEN
887                   CALL radiation_rrtmg
888                ELSE
889                   CALL radiation_constant
890                ENDIF
891
892                CALL cpu_log( log_point(50), 'radiation', 'stop' )
893             ENDIF
894          ENDIF
895
896       ENDDO   ! Intermediate step loop
897
898!
899!--    Increase simulation time and output times
900       nr_timesteps_this_run      = nr_timesteps_this_run + 1
901       current_timestep_number    = current_timestep_number + 1
902       simulated_time             = simulated_time   + dt_3d
903       simulated_time_chr         = time_to_string( simulated_time )
904       time_since_reference_point = simulated_time - coupling_start_time
905
906       IF ( simulated_time >= skip_time_data_output_av )  THEN
907          time_do_av         = time_do_av       + dt_3d
908       ENDIF
909       IF ( simulated_time >= skip_time_do2d_xy )  THEN
910          time_do2d_xy       = time_do2d_xy     + dt_3d
911       ENDIF
912       IF ( simulated_time >= skip_time_do2d_xz )  THEN
913          time_do2d_xz       = time_do2d_xz     + dt_3d
914       ENDIF
915       IF ( simulated_time >= skip_time_do2d_yz )  THEN
916          time_do2d_yz       = time_do2d_yz     + dt_3d
917       ENDIF
918       IF ( simulated_time >= skip_time_do3d    )  THEN
919          time_do3d          = time_do3d        + dt_3d
920       ENDIF
921       DO  mid = 1, masks
922          IF ( simulated_time >= skip_time_domask(mid) )  THEN
923             time_domask(mid)= time_domask(mid) + dt_3d
924          ENDIF
925       ENDDO
926       time_dvrp          = time_dvrp        + dt_3d
927       IF ( simulated_time >= skip_time_dosp )  THEN
928          time_dosp       = time_dosp        + dt_3d
929       ENDIF
930       time_dots          = time_dots        + dt_3d
931       IF ( .NOT. first_call_lpm )  THEN
932          time_dopts      = time_dopts       + dt_3d
933       ENDIF
934       IF ( simulated_time >= skip_time_dopr )  THEN
935          time_dopr       = time_dopr        + dt_3d
936       ENDIF
937       time_dopr_listing          = time_dopr_listing        + dt_3d
938       time_run_control   = time_run_control + dt_3d
939
940!
941!--    Data exchange between coupled models
942       IF ( coupling_mode /= 'uncoupled'  .AND.  run_coupled )  THEN
943          time_coupling = time_coupling + dt_3d
944
945!
946!--       In case of model termination initiated by the local model
947!--       (terminate_coupled > 0), the coupler must be skipped because it would
948!--       cause an MPI intercomminucation hang.
949!--       If necessary, the coupler will be called at the beginning of the
950!--       next restart run.
951          DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
952             CALL surface_coupler
953             time_coupling = time_coupling - dt_coupling
954          ENDDO
955       ENDIF
956
957!
958!--    Execute user-defined actions
959       CALL user_actions( 'after_integration' )
960
961!
962!--    If Galilei transformation is used, determine the distance that the
963!--    model has moved so far
964       IF ( galilei_transformation )  THEN
965          advected_distance_x = advected_distance_x + u_gtrans * dt_3d
966          advected_distance_y = advected_distance_y + v_gtrans * dt_3d
967       ENDIF
968
969!
970!--    Check, if restart is necessary (because cpu-time is expiring or
971!--    because it is forced by user) and set stop flag
972!--    This call is skipped if the remote model has already initiated a restart.
973       IF ( .NOT. terminate_run )  CALL check_for_restart
974
975!
976!--    Carry out statistical analysis and output at the requested output times.
977!--    The MOD function is used for calculating the output time counters (like
978!--    time_dopr) in order to regard a possible decrease of the output time
979!--    interval in case of restart runs
980
981!
982!--    Set a flag indicating that so far no statistics have been created
983!--    for this time step
984       flow_statistics_called = .FALSE.
985
986!
987!--    If required, call flow_statistics for averaging in time
988       IF ( averaging_interval_pr /= 0.0_wp  .AND.  &
989            ( dt_dopr - time_dopr ) <= averaging_interval_pr  .AND.  &
990            simulated_time >= skip_time_dopr )  THEN
991          time_dopr_av = time_dopr_av + dt_3d
992          IF ( time_dopr_av >= dt_averaging_input_pr )  THEN
993             do_sum = .TRUE.
994             time_dopr_av = MOD( time_dopr_av, &
995                                    MAX( dt_averaging_input_pr, dt_3d ) )
996          ENDIF
997       ENDIF
998       IF ( do_sum )  CALL flow_statistics
999
1000!
1001!--    Sum-up 3d-arrays for later output of time-averaged 2d/3d/masked data
1002       IF ( averaging_interval /= 0.0_wp  .AND.                                &
1003            ( dt_data_output_av - time_do_av ) <= averaging_interval  .AND. &
1004            simulated_time >= skip_time_data_output_av )                    &
1005       THEN
1006          time_do_sla = time_do_sla + dt_3d
1007          IF ( time_do_sla >= dt_averaging_input )  THEN
1008             CALL sum_up_3d_data
1009             average_count_3d = average_count_3d + 1
1010             time_do_sla = MOD( time_do_sla, MAX( dt_averaging_input, dt_3d ) )
1011          ENDIF
1012       ENDIF
1013
1014!
1015!--    Calculate spectra for time averaging
1016       IF ( averaging_interval_sp /= 0.0_wp  .AND.  &
1017            ( dt_dosp - time_dosp ) <= averaging_interval_sp  .AND.  &
1018            simulated_time >= skip_time_dosp )  THEN
1019          time_dosp_av = time_dosp_av + dt_3d
1020          IF ( time_dosp_av >= dt_averaging_input_pr )  THEN
1021             CALL calc_spectra
1022             time_dosp_av = MOD( time_dosp_av, &
1023                                 MAX( dt_averaging_input_pr, dt_3d ) )
1024          ENDIF
1025       ENDIF
1026
1027!
1028!--    Computation and output of run control parameters.
1029!--    This is also done whenever perturbations have been imposed
1030       IF ( time_run_control >= dt_run_control  .OR.                     &
1031            timestep_scheme(1:5) /= 'runge'  .OR.  disturbance_created ) &
1032       THEN
1033          CALL run_control
1034          IF ( time_run_control >= dt_run_control )  THEN
1035             time_run_control = MOD( time_run_control, &
1036                                     MAX( dt_run_control, dt_3d ) )
1037          ENDIF
1038       ENDIF
1039
1040!
1041!--    Profile output (ASCII) on file
1042       IF ( time_dopr_listing >= dt_dopr_listing )  THEN
1043          CALL print_1d
1044          time_dopr_listing = MOD( time_dopr_listing, MAX( dt_dopr_listing, &
1045                                                           dt_3d ) )
1046       ENDIF
1047
1048!
1049!--    Graphic output for PROFIL
1050       IF ( time_dopr >= dt_dopr )  THEN
1051          IF ( dopr_n /= 0 )  CALL data_output_profiles
1052          time_dopr = MOD( time_dopr, MAX( dt_dopr, dt_3d ) )
1053          time_dopr_av = 0.0_wp    ! due to averaging (see above)
1054       ENDIF
1055
1056!
1057!--    Graphic output for time series
1058       IF ( time_dots >= dt_dots )  THEN
1059          CALL data_output_tseries
1060          time_dots = MOD( time_dots, MAX( dt_dots, dt_3d ) )
1061       ENDIF
1062
1063!
1064!--    Output of spectra (formatted for use with PROFIL), in case of no
1065!--    time averaging, spectra has to be calculated before
1066       IF ( time_dosp >= dt_dosp )  THEN
1067          IF ( average_count_sp == 0 )  CALL calc_spectra
1068          CALL data_output_spectra
1069          time_dosp = MOD( time_dosp, MAX( dt_dosp, dt_3d ) )
1070       ENDIF
1071
1072!
1073!--    2d-data output (cross-sections)
1074       IF ( time_do2d_xy >= dt_do2d_xy )  THEN
1075          CALL data_output_2d( 'xy', 0 )
1076          time_do2d_xy = MOD( time_do2d_xy, MAX( dt_do2d_xy, dt_3d ) )
1077       ENDIF
1078       IF ( time_do2d_xz >= dt_do2d_xz )  THEN
1079          CALL data_output_2d( 'xz', 0 )
1080          time_do2d_xz = MOD( time_do2d_xz, MAX( dt_do2d_xz, dt_3d ) )
1081       ENDIF
1082       IF ( time_do2d_yz >= dt_do2d_yz )  THEN
1083          CALL data_output_2d( 'yz', 0 )
1084          time_do2d_yz = MOD( time_do2d_yz, MAX( dt_do2d_yz, dt_3d ) )
1085       ENDIF
1086
1087!
1088!--    3d-data output (volume data)
1089       IF ( time_do3d >= dt_do3d )  THEN
1090          CALL data_output_3d( 0 )
1091          time_do3d = MOD( time_do3d, MAX( dt_do3d, dt_3d ) )
1092       ENDIF
1093
1094!
1095!--    Masked data output
1096       DO  mid = 1, masks
1097          IF ( time_domask(mid) >= dt_domask(mid) )  THEN
1098             CALL data_output_mask( 0 )
1099             time_domask(mid) = MOD( time_domask(mid),  &
1100                                     MAX( dt_domask(mid), dt_3d ) )
1101          ENDIF
1102       ENDDO
1103
1104!
1105!--    Output of time-averaged 2d/3d/masked data
1106       IF ( time_do_av >= dt_data_output_av )  THEN
1107          CALL average_3d_data
1108          CALL data_output_2d( 'xy', 1 )
1109          CALL data_output_2d( 'xz', 1 )
1110          CALL data_output_2d( 'yz', 1 )
1111          CALL data_output_3d( 1 )
1112          DO  mid = 1, masks
1113             CALL data_output_mask( 1 )
1114          ENDDO
1115          time_do_av = MOD( time_do_av, MAX( dt_data_output_av, dt_3d ) )
1116       ENDIF
1117
1118!
1119!--    Output of particle time series
1120       IF ( particle_advection )  THEN
1121          IF ( time_dopts >= dt_dopts  .OR. &
1122               ( simulated_time >= particle_advection_start  .AND. &
1123                 first_call_lpm ) )  THEN
1124             CALL data_output_ptseries
1125             time_dopts = MOD( time_dopts, MAX( dt_dopts, dt_3d ) )
1126          ENDIF
1127       ENDIF
1128
1129!
1130!--    Output of dvrp-graphics (isosurface, particles, slicer)
1131#if defined( __dvrp_graphics )
1132       CALL DVRP_LOG_EVENT( -2, current_timestep_number-1 )
1133#endif
1134       IF ( time_dvrp >= dt_dvrp )  THEN
1135          CALL data_output_dvrp
1136          time_dvrp = MOD( time_dvrp, MAX( dt_dvrp, dt_3d ) )
1137       ENDIF
1138#if defined( __dvrp_graphics )
1139       CALL DVRP_LOG_EVENT( 2, current_timestep_number )
1140#endif
1141
1142!
1143!--    If required, set the heat flux for the next time step at a random value
1144       IF ( constant_heatflux  .AND.  random_heatflux )  CALL disturb_heatflux
1145
1146!
1147!--    Execute user-defined actions
1148       CALL user_actions( 'after_timestep' )
1149
1150!
1151!--    Output elapsed simulated time in form of a progress bar on stdout
1152       IF ( myid == 0 )  CALL output_progress_bar
1153
1154       CALL cpu_log( log_point_s(10), 'timesteps', 'stop' )
1155
1156
1157    ENDDO   ! time loop
1158
1159    IF ( myid == 0 )  CALL finish_progress_bar
1160
1161#if defined( __dvrp_graphics )
1162    CALL DVRP_LOG_EVENT( -2, current_timestep_number )
1163#endif
1164
1165    CALL location_message( 'finished time-stepping', .TRUE. )
1166
1167 END SUBROUTINE time_integration
Note: See TracBrowser for help on using the repository browser.