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source: palm/trunk/SOURCE/time_integration.f90 @ 1928

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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 1928 2016-06-07 11:58:16Z hellstea $
26	!
27	! 1927 2016-06-07 11:56:53Z hellstea
28	! Synchronization moved before CALL run_control. Exchange_horiz for pt after
29	! CALL pmci_datatrans is now only called if ( .NOT. neutral ).
30	!
31	! 1918 2016-05-27 14:35:57Z raasch
32	! determination of time step moved to the end of the time step loop,
33	! the first time step is now always calculated before the time step loop (i.e.
34	! also in case of restart runs)
35	!
36	! 1914 2016-05-26 14:44:07Z witha
37	! Added call for wind turbine model
38	!
39	! 1878 2016-04-19 12:30:36Z hellstea
40	! Synchronization for nested runs rewritten
41	!
42	! 1853 2016-04-11 09:00:35Z maronga
43	! Adjusted for use with radiation_scheme = constant
44	!
45	! 1849 2016-04-08 11:33:18Z hoffmann
46	! Adapted for modularization of microphysics
47	!
48	! 1833 2016-04-07 14:23:03Z raasch
49	! spectrum renamed spectra_mod, spectra related variables moved to spectra_mod
50	!
51	! 1831 2016-04-07 13:15:51Z hoffmann
52	! turbulence renamed collision_turbulence
53	!
54	! 1822 2016-04-07 07:49:42Z hoffmann
55	! icloud_scheme replaced by microphysics_*
56	!
57	! 1808 2016-04-05 19:44:00Z raasch
58	! output message in case unscheduled radiation calls removed
59	!
60	! 1797 2016-03-21 16:50:28Z raasch
61	! introduction of different datatransfer modes
62	!
63	! 1791 2016-03-11 10:41:25Z raasch
64	! call of pmci_update_new removed
65	!
66	! 1786 2016-03-08 05:49:27Z raasch
67	! +module spectrum
68	!
69	! 1783 2016-03-06 18:36:17Z raasch
70	! switch back of netcdf data format for mask output moved to the mask output
71	! routine
72	!
73	! 1781 2016-03-03 15:12:23Z raasch
74	! some pmc calls removed at the beginning (before timeloop),
75	! pmc initialization moved to the main program
76	!
77	! 1764 2016-02-28 12:45:19Z raasch
78	! PMC_ACTIVE flags removed,
79	! bugfix: nest synchronization after first call of timestep
80	!
81	! 1762 2016-02-25 12:31:13Z hellstea
82	! Introduction of nested domain feature
83	!
84	! 1736 2015-12-04 08:56:33Z raasch
85	! no perturbations added to total domain if energy limit has been set zero
86	!
87	! 1691 2015-10-26 16:17:44Z maronga
88	! Added option for spin-ups without land surface and radiation models. Moved calls
89	! for radiation and lan surface schemes.
90	!
91	! 1682 2015-10-07 23:56:08Z knoop
92	! Code annotations made doxygen readable
93	!
94	! 1671 2015-09-25 03:29:37Z raasch
95	! bugfix: ghostpoint exchange for array diss in case that sgs velocities are used
96	! for particles
97	!
98	! 1585 2015-04-30 07:05:52Z maronga
99	! Moved call of radiation scheme. Added support for RRTM
100	!
101	! 1551 2015-03-03 14:18:16Z maronga
102	! Added interface for different radiation schemes.
103	!
104	! 1496 2014-12-02 17:25:50Z maronga
105	! Added calls for the land surface model and radiation scheme
106	!
107	! 1402 2014-05-09 14:25:13Z raasch
108	! location messages modified
109	!
110	! 1384 2014-05-02 14:31:06Z raasch
111	! location messages added
112	!
113	! 1380 2014-04-28 12:40:45Z heinze
114	! CALL of nudge_ref added
115	! bc_pt_t_val and bc_q_t_val are updated in case nudging is used
116	!
117	! 1365 2014-04-22 15:03:56Z boeske
118	! Reset sums_ls_l to zero at each timestep
119	! +sums_ls_l
120	! Calculation of reference state (previously in subroutine calc_mean_profile)
121
122	! 1342 2014-03-26 17:04:47Z kanani
123	! REAL constants defined as wp-kind
124	!
125	! 1320 2014-03-20 08:40:49Z raasch
126	! ONLY-attribute added to USE-statements,
127	! kind-parameters added to all INTEGER and REAL declaration statements,
128	! kinds are defined in new module kinds,
129	! old module precision_kind is removed,
130	! revision history before 2012 removed,
131	! comment fields (!:) to be used for variable explanations added to
132	! all variable declaration statements
133	! 1318 2014-03-17 13:35:16Z raasch
134	! module interfaces removed
135	!
136	! 1308 2014-03-13 14:58:42Z fricke
137	! +netcdf_data_format_save
138	! For masked data, parallel netcdf output is not tested so far, hence
139	! netcdf_data_format is switched back to non-paralell output.
140	!
141	! 1276 2014-01-15 13:40:41Z heinze
142	! Use LSF_DATA also in case of Dirichlet bottom boundary condition for scalars
143	!
144	! 1257 2013-11-08 15:18:40Z raasch
145	! acc-update-host directive for timestep removed
146	!
147	! 1241 2013-10-30 11:36:58Z heinze
148	! Generalize calc_mean_profile for wider use
149	! Determine shf and qsws in dependence on data from LSF_DATA
150	! Determine ug and vg in dependence on data from LSF_DATA
151	! 1221 2013-09-10 08:59:13Z raasch
152	! host update of arrays before timestep is called
153	!
154	! 1179 2013-06-14 05:57:58Z raasch
155	! mean profiles for reference state are only calculated if required,
156	! small bugfix for background communication
157	!
158	! 1171 2013-05-30 11:27:45Z raasch
159	! split of prognostic_equations deactivated (comment lines), for the time being
160	!
161	! 1128 2013-04-12 06:19:32Z raasch
162	! asynchronous transfer of ghost point data realized for acc-optimized version:
163	! prognostic_equations are first called two times for those points required for
164	! the left-right and north-south exchange, respectively, and then for the
165	! remaining points,
166	! those parts requiring global communication moved from prognostic_equations to
167	! here
168	!
169	! 1115 2013-03-26 18:16:16Z hoffmann
170	! calculation of qr and nr is restricted to precipitation
171	!
172	! 1113 2013-03-10 02:48:14Z raasch
173	! GPU-porting of boundary conditions,
174	! openACC directives updated
175	! formal parameter removed from routine boundary_conds
176	!
177	! 1111 2013-03-08 23:54:10Z raasch
178	! +internal timestep counter for cpu statistics added,
179	! openACC directives updated
180	!
181	! 1092 2013-02-02 11:24:22Z raasch
182	! unused variables removed
183	!
184	! 1065 2012-11-22 17:42:36Z hoffmann
185	! exchange of diss (dissipation rate) in case of turbulence = .TRUE. added
186	!
187	! 1053 2012-11-13 17:11:03Z hoffmann
188	! exchange of ghost points for nr, qr added
189	!
190	! 1036 2012-10-22 13:43:42Z raasch
191	! code put under GPL (PALM 3.9)
192	!
193	! 1019 2012-09-28 06:46:45Z raasch
194	! non-optimized version of prognostic_equations removed
195	!
196	! 1015 2012-09-27 09:23:24Z raasch
197	! +call of prognostic_equations_acc
198	!
199	! 1001 2012-09-13 14:08:46Z raasch
200	! all actions concerning leapfrog- and upstream-spline-scheme removed
201	!
202	! 849 2012-03-15 10:35:09Z raasch
203	! advec_particles renamed lpm, first_call_advec_particles renamed first_call_lpm
204	!
205	! 825 2012-02-19 03:03:44Z raasch
206	! wang_collision_kernel renamed wang_kernel
207	!
208	! Revision 1.1 1997/08/11 06:19:04 raasch
209	! Initial revision
210	!
211	!
212	! Description:
213	! ------------
214	!> Integration in time of the model equations, statistical analysis and graphic
215	!> output
216	!------------------------------------------------------------------------------!
217	SUBROUTINE time_integration
218
219
220	USE advec_ws, &
221	ONLY: ws_statistics
222
223	USE arrays_3d, &
224	ONLY: diss, dzu, e, e_p, nr_p, prho, pt, pt_p, pt_init, q_init, q, &
225	ql, ql_c, ql_v, ql_vp, qr_p, q_p, ref_state, rho, sa_p, tend, &
226	u, u_p, v, vpt, v_p, w, w_p
227
228	USE calc_mean_profile_mod, &
229	ONLY: calc_mean_profile
230
231	USE control_parameters, &
232	ONLY: advected_distance_x, advected_distance_y, average_count_3d, &
233	averaging_interval, averaging_interval_pr, &
234	bc_lr_cyc, bc_ns_cyc, bc_pt_t_val, &
235	bc_q_t_val, call_psolver_at_all_substeps, cloud_droplets, &
236	cloud_physics, constant_flux_layer, constant_heatflux, &
237	create_disturbances, dopr_n, constant_diffusion, coupling_mode, &
238	coupling_start_time, current_timestep_number, &
239	disturbance_created, disturbance_energy_limit, dist_range, &
240	do_sum, dt_3d, dt_averaging_input, dt_averaging_input_pr, &
241	dt_coupling, dt_data_output_av, dt_disturb, dt_do2d_xy, &
242	dt_do2d_xz, dt_do2d_yz, dt_do3d, dt_domask,dt_dopts, dt_dopr, &
243	dt_dopr_listing, dt_dots, dt_dvrp, dt_run_control, &
244	end_time, first_call_lpm, galilei_transformation, humidity, &
245	intermediate_timestep_count, &
246	intermediate_timestep_count_max, large_scale_forcing, &
247	loop_optimization, lsf_surf, lsf_vert, masks, &
248	microphysics_seifert, mid, nest_domain, &
249	neutral, nr_timesteps_this_run, nudging, &
250	ocean, on_device, passive_scalar, &
251	prho_reference, pt_reference, pt_slope_offset, random_heatflux, &
252	run_coupled, simulated_time, simulated_time_chr, &
253	skip_time_do2d_xy, skip_time_do2d_xz, skip_time_do2d_yz, &
254	skip_time_do3d, skip_time_domask, skip_time_dopr, &
255	skip_time_data_output_av, sloping_surface, &
256	stop_dt, terminate_coupled, terminate_run, timestep_scheme, &
257	time_coupling, time_do2d_xy, time_do2d_xz, time_do2d_yz, &
258	time_do3d, time_domask, time_dopr, time_dopr_av, &
259	time_dopr_listing, time_dopts, time_dosp, time_dosp_av, &
260	time_dots, time_do_av, time_do_sla, time_disturb, time_dvrp, &
261	time_run_control, time_since_reference_point, &
262	turbulent_inflow, use_initial_profile_as_reference, &
263	use_single_reference_value, u_gtrans, v_gtrans, ws_scheme_mom, &
264	ws_scheme_sca
265
266	USE cpulog, &
267	ONLY: cpu_log, log_point, log_point_s
268
269	USE indices, &
270	ONLY: i_left, i_right, j_north, j_south, nbgp, nx, nxl, nxlg, nxr, &
271	nxrg, nyn, nyng, nys, nysg, nzb, nzt, nzb_u_inner, nzb_v_inner
272
273	USE interaction_droplets_ptq_mod, &
274	ONLY: interaction_droplets_ptq
275
276	USE interfaces
277
278	USE kinds
279
280	USE land_surface_model_mod, &
281	ONLY: land_surface, lsm_energy_balance, lsm_soil_model, &
282	skip_time_do_lsm
283
284	USE ls_forcing_mod, &
285	ONLY: ls_forcing_surf, ls_forcing_vert
286
287	USE microphysics_mod, &
288	ONLY: collision_turbulence
289
290	USE nudge_mod, &
291	ONLY: calc_tnudge, nudge_ref
292
293	USE particle_attributes, &
294	ONLY: particle_advection, particle_advection_start, &
295	use_sgs_for_particles, wang_kernel
296
297	USE pegrid
298
299	USE pmc_interface, &
300	ONLY: client_to_server, nested_run, nesting_mode, &
301	pmci_datatrans, pmci_ensure_nest_mass_conservation, &
302	pmci_synchronize, server_to_client
303
304	USE production_e_mod, &
305	ONLY: production_e_init
306
307	USE progress_bar, &
308	ONLY: finish_progress_bar, output_progress_bar
309
310	USE prognostic_equations_mod, &
311	ONLY: prognostic_equations_acc, prognostic_equations_cache, &
312	prognostic_equations_vector
313
314	USE radiation_model_mod, &
315	ONLY: dt_radiation, force_radiation_call, radiation, &
316	radiation_clearsky, radiation_constant, radiation_rrtmg, &
317	radiation_scheme, skip_time_do_radiation, time_radiation
318
319	USE spectra_mod, &
320	ONLY: average_count_sp, averaging_interval_sp, calc_spectra, dt_dosp, &
321	skip_time_dosp
322
323	USE statistics, &
324	ONLY: flow_statistics_called, hom, pr_palm, sums_ls_l, u_max, &
325	u_max_ijk, v_max, v_max_ijk, w_max, w_max_ijk
326
327	USE surface_layer_fluxes_mod, &
328	ONLY: surface_layer_fluxes
329
330	USE user_actions_mod, &
331	ONLY: user_actions
332
333	USE wind_turbine_model_mod, &
334	ONLY: wind_turbine, wtm_forces
335
336	IMPLICIT NONE
337
338	CHARACTER (LEN=9) :: time_to_string !<
339
340	REAL(wp) :: dt_3d_old !< temporary storage of timestep to be used for
341	!< steering of run control output interval
342
343	!
344	!-- At beginning determine the first time step
345	CALL timestep
346
347	!
348	!-- Synchronize the timestep in case of nested run.
349	IF ( nested_run ) THEN
350	!
351	!-- Synchronization by unifying the time step.
352	!-- Global minimum of all time-steps is used for all.
353	CALL pmci_synchronize
354	ENDIF
355
356	!
357	!-- Determine and print out the run control quantities before the first time
358	!-- step of this run. For the initial run, some statistics (e.g. divergence)
359	!-- need to be determined first.
360	IF ( simulated_time == 0.0_wp ) CALL flow_statistics
361	CALL run_control
362
363	!
364	!-- Data exchange between coupled models in case that a call has been omitted
365	!-- at the end of the previous run of a job chain.
366	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
367	!
368	!-- In case of model termination initiated by the local model the coupler
369	!-- must not be called because this would again cause an MPI hang.
370	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
371	CALL surface_coupler
372	time_coupling = time_coupling - dt_coupling
373	ENDDO
374	IF (time_coupling == 0.0_wp .AND. &
375	time_since_reference_point < dt_coupling ) &
376	THEN
377	time_coupling = time_since_reference_point
378	ENDIF
379	ENDIF
380
381	#if defined( __dvrp_graphics )
382	!
383	!-- Time measurement with dvrp software
384	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
385	#endif
386
387	CALL location_message( 'start with time-stepping', .TRUE. )
388	!
389	!-- Start of the time loop
390	DO WHILE ( simulated_time < end_time .AND. .NOT. stop_dt .AND. &
391	.NOT. terminate_run )
392
393	CALL cpu_log( log_point_s(10), 'timesteps', 'start' )
394
395	!
396	!-- Determine ug, vg and w_subs in dependence on data from external file
397	!-- LSF_DATA
398	IF ( large_scale_forcing .AND. lsf_vert ) THEN
399	CALL ls_forcing_vert ( simulated_time )
400	sums_ls_l = 0.0_wp
401	ENDIF
402
403	!
404	!-- Set pt_init and q_init to the current profiles taken from
405	!-- NUDGING_DATA
406	IF ( nudging ) THEN
407	CALL nudge_ref ( simulated_time )
408	!
409	!-- Store temperature gradient at the top boundary for possible Neumann
410	!-- boundary condition
411	bc_pt_t_val = ( pt_init(nzt+1) - pt_init(nzt) ) / dzu(nzt+1)
412	bc_q_t_val = ( q_init(nzt+1) - q_init(nzt) ) / dzu(nzt+1)
413	ENDIF
414
415	!
416	!-- Execute the user-defined actions
417	CALL user_actions( 'before_timestep' )
418
419	!
420	!-- Calculate forces by wind turbines
421	IF ( wind_turbine ) THEN
422
423	CALL cpu_log( log_point(55), 'wind_turbine', 'start' )
424
425	CALL wtm_forces
426
427	CALL cpu_log( log_point(55), 'wind_turbine', 'stop' )
428
429	ENDIF
430
431	!
432	!-- Start of intermediate step loop
433	intermediate_timestep_count = 0
434	DO WHILE ( intermediate_timestep_count < &
435	intermediate_timestep_count_max )
436
437	intermediate_timestep_count = intermediate_timestep_count + 1
438
439	!
440	!-- Set the steering factors for the prognostic equations which depend
441	!-- on the timestep scheme
442	CALL timestep_scheme_steering
443
444	!
445	!-- Calculate those variables needed in the tendency terms which need
446	!-- global communication
447	IF ( .NOT. use_single_reference_value .AND. &
448	.NOT. use_initial_profile_as_reference ) THEN
449	!
450	!-- Horizontally averaged profiles to be used as reference state in
451	!-- buoyancy terms (WARNING: only the respective last call of
452	!-- calc_mean_profile defines the reference state!)
453	IF ( .NOT. neutral ) THEN
454	CALL calc_mean_profile( pt, 4 )
455	ref_state(:) = hom(:,1,4,0) ! this is used in the buoyancy term
456	ENDIF
457	IF ( ocean ) THEN
458	CALL calc_mean_profile( rho, 64 )
459	ref_state(:) = hom(:,1,64,0)
460	ENDIF
461	IF ( humidity ) THEN
462	CALL calc_mean_profile( vpt, 44 )
463	ref_state(:) = hom(:,1,44,0)
464	ENDIF
465
466	ENDIF
467
468	IF ( .NOT. constant_diffusion ) CALL production_e_init
469	IF ( ( ws_scheme_mom .OR. ws_scheme_sca ) .AND. &
470	intermediate_timestep_count == 1 ) CALL ws_statistics
471	!
472	!-- In case of nudging calculate current nudging time scale and horizontal
473	!-- means of u, v, pt and q
474	IF ( nudging ) THEN
475	CALL calc_tnudge( simulated_time )
476	CALL calc_mean_profile( u, 1 )
477	CALL calc_mean_profile( v, 2 )
478	CALL calc_mean_profile( pt, 4 )
479	CALL calc_mean_profile( q, 41 )
480	ENDIF
481
482	!
483	!-- Solve the prognostic equations. A fast cache optimized version with
484	!-- only one single loop is used in case of Piascek-Williams advection
485	!-- scheme. NEC vector machines use a different version, because
486	!-- in the other versions a good vectorization is prohibited due to
487	!-- inlining problems.
488	IF ( loop_optimization == 'cache' ) THEN
489	CALL prognostic_equations_cache
490	ELSEIF ( loop_optimization == 'vector' ) THEN
491	CALL prognostic_equations_vector
492	ELSEIF ( loop_optimization == 'acc' ) THEN
493	i_left = nxl; i_right = nxr
494	j_south = nys; j_north = nyn
495	CALL prognostic_equations_acc
496
497	! i_left = nxl; i_right = nxl+nbgp-1
498	! j_south = nys; j_north = nyn
499	! CALL prognostic_equations_acc
500	! i_left = nxr-nbgp+1; i_right = nxr
501	! j_south = nys; j_north = nyn
502	! CALL prognostic_equations_acc
503
504	!
505	!-- Exchange of ghost points (lateral boundary conditions)
506	IF ( background_communication ) THEN
507
508	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
509
510	send_receive = 'lr'
511	sendrecv_in_background = .TRUE.
512	req = 0
513	req_count = 0
514
515	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
516	on_device = .TRUE. ! to be removed after complete porting
517	ELSE ! of ghost point exchange
518	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
519	ENDIF
520
521	CALL exchange_horiz( u_p, nbgp )
522	CALL exchange_horiz( v_p, nbgp )
523	CALL exchange_horiz( w_p, nbgp )
524	CALL exchange_horiz( pt_p, nbgp )
525	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
526	IF ( ocean ) THEN
527	CALL exchange_horiz( sa_p, nbgp )
528	CALL exchange_horiz( rho, nbgp )
529	CALL exchange_horiz( prho, nbgp )
530	ENDIF
531	IF (humidity .OR. passive_scalar) THEN
532	CALL exchange_horiz( q_p, nbgp )
533	IF ( cloud_physics .AND. microphysics_seifert ) THEN
534	CALL exchange_horiz( qr_p, nbgp )
535	CALL exchange_horiz( nr_p, nbgp )
536	ENDIF
537	ENDIF
538	IF ( cloud_droplets ) THEN
539	CALL exchange_horiz( ql, nbgp )
540	CALL exchange_horiz( ql_c, nbgp )
541	CALL exchange_horiz( ql_v, nbgp )
542	CALL exchange_horiz( ql_vp, nbgp )
543	ENDIF
544	IF ( wang_kernel .OR. collision_turbulence .OR. &
545	use_sgs_for_particles ) THEN
546	CALL exchange_horiz( diss, nbgp )
547	ENDIF
548
549	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
550	on_device = .FALSE. ! to be removed after complete porting
551	ELSE ! of ghost point exchange
552	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
553	ENDIF
554
555	sendrecv_in_background = .FALSE.
556
557	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'pause' )
558
559	ENDIF
560
561	! i_left = nxl+nbgp; i_right = nxr-nbgp
562	! j_south = nys; j_north = nys+nbgp-1
563	! CALL prognostic_equations_acc
564	! i_left = nxl+nbgp; i_right = nxr-nbgp
565	! j_south = nyn-nbgp+1; j_north = nyn
566	! CALL prognostic_equations_acc
567
568	IF ( background_communication ) THEN
569	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'start' )
570	#if defined( __parallel )
571	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
572	#endif
573	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'pause' )
574
575	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'continue' )
576
577	send_receive = 'ns'
578	sendrecv_in_background = .TRUE.
579	req = 0
580	req_count = 0
581
582	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
583	on_device = .TRUE. ! to be removed after complete porting
584	ELSE ! of ghost point exchange
585	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
586	ENDIF
587
588	CALL exchange_horiz( u_p, nbgp )
589	CALL exchange_horiz( v_p, nbgp )
590	CALL exchange_horiz( w_p, nbgp )
591	CALL exchange_horiz( pt_p, nbgp )
592	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
593	IF ( ocean ) THEN
594	CALL exchange_horiz( sa_p, nbgp )
595	CALL exchange_horiz( rho, nbgp )
596	CALL exchange_horiz( prho, nbgp )
597	ENDIF
598	IF (humidity .OR. passive_scalar) THEN
599	CALL exchange_horiz( q_p, nbgp )
600	IF ( cloud_physics .AND. microphysics_seifert ) THEN
601	CALL exchange_horiz( qr_p, nbgp )
602	CALL exchange_horiz( nr_p, nbgp )
603	ENDIF
604	ENDIF
605	IF ( cloud_droplets ) THEN
606	CALL exchange_horiz( ql, nbgp )
607	CALL exchange_horiz( ql_c, nbgp )
608	CALL exchange_horiz( ql_v, nbgp )
609	CALL exchange_horiz( ql_vp, nbgp )
610	ENDIF
611	IF ( wang_kernel .OR. collision_turbulence .OR. &
612	use_sgs_for_particles ) THEN
613	CALL exchange_horiz( diss, nbgp )
614	ENDIF
615
616	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
617	on_device = .FALSE. ! to be removed after complete porting
618	ELSE ! of ghost point exchange
619	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
620	ENDIF
621
622	sendrecv_in_background = .FALSE.
623
624	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
625
626	ENDIF
627
628	! i_left = nxl+nbgp; i_right = nxr-nbgp
629	! j_south = nys+nbgp; j_north = nyn-nbgp
630	! CALL prognostic_equations_acc
631
632	IF ( background_communication ) THEN
633	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'continue' )
634	#if defined( __parallel )
635	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
636	#endif
637	send_receive = 'al'
638	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'stop' )
639	ENDIF
640
641	ENDIF
642
643	!
644	!-- Particle transport/physics with the Lagrangian particle model
645	!-- (only once during intermediate steps, because it uses an Euler-step)
646	!-- ### particle model should be moved before prognostic_equations, in order
647	!-- to regard droplet interactions directly
648	IF ( particle_advection .AND. &
649	simulated_time >= particle_advection_start .AND. &
650	intermediate_timestep_count == 1 ) THEN
651	CALL lpm
652	first_call_lpm = .FALSE.
653	ENDIF
654
655	!
656	!-- Interaction of droplets with temperature and specific humidity.
657	!-- Droplet condensation and evaporation is calculated within
658	!-- advec_particles.
659	IF ( cloud_droplets .AND. &
660	intermediate_timestep_count == intermediate_timestep_count_max )&
661	THEN
662	CALL interaction_droplets_ptq
663	ENDIF
664
665	!
666	!-- Exchange of ghost points (lateral boundary conditions)
667	IF ( .NOT. background_communication ) THEN
668
669	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
670
671	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
672	on_device = .TRUE. ! to be removed after complete porting
673	ELSE ! of ghost point exchange
674	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
675	ENDIF
676
677	CALL exchange_horiz( u_p, nbgp )
678	CALL exchange_horiz( v_p, nbgp )
679	CALL exchange_horiz( w_p, nbgp )
680	CALL exchange_horiz( pt_p, nbgp )
681	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
682	IF ( ocean ) THEN
683	CALL exchange_horiz( sa_p, nbgp )
684	CALL exchange_horiz( rho, nbgp )
685	CALL exchange_horiz( prho, nbgp )
686	ENDIF
687	IF (humidity .OR. passive_scalar) THEN
688	CALL exchange_horiz( q_p, nbgp )
689	IF ( cloud_physics .AND. microphysics_seifert ) THEN
690	CALL exchange_horiz( qr_p, nbgp )
691	CALL exchange_horiz( nr_p, nbgp )
692	ENDIF
693	ENDIF
694	IF ( cloud_droplets ) THEN
695	CALL exchange_horiz( ql, nbgp )
696	CALL exchange_horiz( ql_c, nbgp )
697	CALL exchange_horiz( ql_v, nbgp )
698	CALL exchange_horiz( ql_vp, nbgp )
699	ENDIF
700	IF ( wang_kernel .OR. collision_turbulence .OR. &
701	use_sgs_for_particles ) THEN
702	CALL exchange_horiz( diss, nbgp )
703	ENDIF
704
705	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
706	on_device = .FALSE. ! to be removed after complete porting
707	ELSE ! of ghost point exchange
708	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
709	ENDIF
710
711	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
712
713	ENDIF
714
715	!
716	!-- Boundary conditions for the prognostic quantities (except of the
717	!-- velocities at the outflow in case of a non-cyclic lateral wall)
718	CALL boundary_conds
719
720	!
721	!-- Swap the time levels in preparation for the next time step.
722	CALL swap_timelevel
723
724	IF ( nested_run ) THEN
725
726	CALL cpu_log( log_point(60), 'nesting', 'start' )
727	!
728	!-- Domain nesting. The data transfer subroutines pmci_server_datatrans
729	!-- and pmci_client_datatatrans are called inside the wrapper
730	!-- subroutine pmci_datatrans according to the control parameters
731	!-- nesting_mode and nesting_datatransfer_mode.
732	!-- TO_DO: why is nesting_mode given as a parameter here?
733	CALL pmci_datatrans( nesting_mode )
734
735	IF ( nesting_mode == 'two-way' ) THEN
736	!
737	!-- Exchange_horiz is needed for all server-domains after the
738	!-- anterpolation
739	CALL exchange_horiz( u, nbgp )
740	CALL exchange_horiz( v, nbgp )
741	CALL exchange_horiz( w, nbgp )
742	IF ( .NOT. neutral ) THEN
743	CALL exchange_horiz( pt, nbgp )
744	ENDIF
745	IF ( humidity .OR. passive_scalar ) THEN
746	CALL exchange_horiz( q, nbgp )
747	ENDIF
748	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e, nbgp )
749	ENDIF
750	!
751	!-- Correct the w top-BC in nest domains to ensure mass conservation.
752	!-- This action must never be done for the root domain.
753	IF ( nest_domain ) THEN
754	CALL pmci_ensure_nest_mass_conservation
755	ENDIF
756
757	CALL cpu_log( log_point(60), 'nesting', 'stop' )
758
759	ENDIF
760
761	!
762	!-- Temperature offset must be imposed at cyclic boundaries in x-direction
763	!-- when a sloping surface is used
764	IF ( sloping_surface ) THEN
765	IF ( nxl == 0 ) pt(:,:,nxlg:nxl-1) = pt(:,:,nxlg:nxl-1) - &
766	pt_slope_offset
767	IF ( nxr == nx ) pt(:,:,nxr+1:nxrg) = pt(:,:,nxr+1:nxrg) + &
768	pt_slope_offset
769	ENDIF
770
771	!
772	!-- Impose a turbulent inflow using the recycling method
773	IF ( turbulent_inflow ) CALL inflow_turbulence
774
775	!
776	!-- Impose a random perturbation on the horizontal velocity field
777	IF ( create_disturbances .AND. &
778	( call_psolver_at_all_substeps .AND. &
779	intermediate_timestep_count == intermediate_timestep_count_max )&
780	.OR. ( .NOT. call_psolver_at_all_substeps .AND. &
781	intermediate_timestep_count == 1 ) ) &
782	THEN
783	time_disturb = time_disturb + dt_3d
784	IF ( time_disturb >= dt_disturb ) THEN
785	!$acc update host( u, v )
786	IF ( numprocs == 1 ) on_device = .FALSE. ! workaround, remove later
787	IF ( disturbance_energy_limit /= 0.0_wp .AND. &
788	hom(nzb+5,1,pr_palm,0) < disturbance_energy_limit ) THEN
789	CALL disturb_field( nzb_u_inner, tend, u )
790	CALL disturb_field( nzb_v_inner, tend, v )
791	ELSEIF ( .NOT. bc_lr_cyc .OR. .NOT. bc_ns_cyc ) THEN
792	!
793	!-- Runs with a non-cyclic lateral wall need perturbations
794	!-- near the inflow throughout the whole simulation
795	dist_range = 1
796	CALL disturb_field( nzb_u_inner, tend, u )
797	CALL disturb_field( nzb_v_inner, tend, v )
798	dist_range = 0
799	ENDIF
800	IF ( numprocs == 1 ) on_device = .TRUE. ! workaround, remove later
801	!$acc update device( u, v )
802	time_disturb = time_disturb - dt_disturb
803	ENDIF
804	ENDIF
805
806	!
807	!-- Reduce the velocity divergence via the equation for perturbation
808	!-- pressure.
809	IF ( intermediate_timestep_count == 1 .OR. &
810	call_psolver_at_all_substeps ) THEN
811	CALL pres
812	ENDIF
813
814	!
815	!-- If required, compute liquid water content
816	IF ( cloud_physics ) THEN
817	CALL calc_liquid_water_content
818	!$acc update device( ql )
819	ENDIF
820	!
821	!-- If required, compute virtual potential temperature
822	IF ( humidity ) THEN
823	CALL compute_vpt
824	!$acc update device( vpt )
825	ENDIF
826
827	!
828	!-- Compute the diffusion quantities
829	IF ( .NOT. constant_diffusion ) THEN
830
831	!
832	!-- Determine surface fluxes shf and qsws and surface values
833	!-- pt_surface and q_surface in dependence on data from external
834	!-- file LSF_DATA respectively
835	IF ( ( large_scale_forcing .AND. lsf_surf ) .AND. &
836	intermediate_timestep_count == intermediate_timestep_count_max )&
837	THEN
838	CALL ls_forcing_surf ( simulated_time )
839	ENDIF
840
841	!
842	!-- First the vertical fluxes in the surface (constant flux) layer are computed
843	IF ( constant_flux_layer ) THEN
844	CALL cpu_log( log_point(19), 'surface_layer_fluxes', 'start' )
845	CALL surface_layer_fluxes
846	CALL cpu_log( log_point(19), 'surface_layer_fluxes', 'stop' )
847	ENDIF
848
849	!
850	!-- If required, solve the energy balance for the surface and run soil
851	!-- model
852	IF ( land_surface .AND. simulated_time > skip_time_do_lsm) THEN
853
854	CALL cpu_log( log_point(54), 'land_surface', 'start' )
855	CALL lsm_energy_balance
856	CALL lsm_soil_model
857	CALL cpu_log( log_point(54), 'land_surface', 'stop' )
858	ENDIF
859	!
860	!-- Compute the diffusion coefficients
861	CALL cpu_log( log_point(17), 'diffusivities', 'start' )
862	IF ( .NOT. humidity ) THEN
863	IF ( ocean ) THEN
864	CALL diffusivities( prho, prho_reference )
865	ELSE
866	CALL diffusivities( pt, pt_reference )
867	ENDIF
868	ELSE
869	CALL diffusivities( vpt, pt_reference )
870	ENDIF
871	CALL cpu_log( log_point(17), 'diffusivities', 'stop' )
872
873	ENDIF
874
875	!
876	!-- If required, calculate radiative fluxes and heating rates
877	IF ( radiation .AND. intermediate_timestep_count &
878	== intermediate_timestep_count_max .AND. simulated_time > &
879	skip_time_do_radiation ) THEN
880
881	time_radiation = time_radiation + dt_3d
882
883	IF ( time_radiation >= dt_radiation .OR. force_radiation_call ) &
884	THEN
885
886	CALL cpu_log( log_point(50), 'radiation', 'start' )
887
888	IF ( .NOT. force_radiation_call ) THEN
889	time_radiation = time_radiation - dt_radiation
890	ENDIF
891
892	IF ( radiation_scheme == 'clear-sky' ) THEN
893	CALL radiation_clearsky
894	ELSEIF ( radiation_scheme == 'rrtmg' ) THEN
895	CALL radiation_rrtmg
896	ELSE
897	CALL radiation_constant
898	ENDIF
899
900	CALL cpu_log( log_point(50), 'radiation', 'stop' )
901	ENDIF
902	ENDIF
903
904	ENDDO ! Intermediate step loop
905
906	!
907	!-- Increase simulation time and output times
908	nr_timesteps_this_run = nr_timesteps_this_run + 1
909	current_timestep_number = current_timestep_number + 1
910	simulated_time = simulated_time + dt_3d
911	simulated_time_chr = time_to_string( simulated_time )
912	time_since_reference_point = simulated_time - coupling_start_time
913
914	IF ( simulated_time >= skip_time_data_output_av ) THEN
915	time_do_av = time_do_av + dt_3d
916	ENDIF
917	IF ( simulated_time >= skip_time_do2d_xy ) THEN
918	time_do2d_xy = time_do2d_xy + dt_3d
919	ENDIF
920	IF ( simulated_time >= skip_time_do2d_xz ) THEN
921	time_do2d_xz = time_do2d_xz + dt_3d
922	ENDIF
923	IF ( simulated_time >= skip_time_do2d_yz ) THEN
924	time_do2d_yz = time_do2d_yz + dt_3d
925	ENDIF
926	IF ( simulated_time >= skip_time_do3d ) THEN
927	time_do3d = time_do3d + dt_3d
928	ENDIF
929	DO mid = 1, masks
930	IF ( simulated_time >= skip_time_domask(mid) ) THEN
931	time_domask(mid)= time_domask(mid) + dt_3d
932	ENDIF
933	ENDDO
934	time_dvrp = time_dvrp + dt_3d
935	IF ( simulated_time >= skip_time_dosp ) THEN
936	time_dosp = time_dosp + dt_3d
937	ENDIF
938	time_dots = time_dots + dt_3d
939	IF ( .NOT. first_call_lpm ) THEN
940	time_dopts = time_dopts + dt_3d
941	ENDIF
942	IF ( simulated_time >= skip_time_dopr ) THEN
943	time_dopr = time_dopr + dt_3d
944	ENDIF
945	time_dopr_listing = time_dopr_listing + dt_3d
946	time_run_control = time_run_control + dt_3d
947
948	!
949	!-- Data exchange between coupled models
950	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
951	time_coupling = time_coupling + dt_3d
952
953	!
954	!-- In case of model termination initiated by the local model
955	!-- (terminate_coupled > 0), the coupler must be skipped because it would
956	!-- cause an MPI intercomminucation hang.
957	!-- If necessary, the coupler will be called at the beginning of the
958	!-- next restart run.
959	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
960	CALL surface_coupler
961	time_coupling = time_coupling - dt_coupling
962	ENDDO
963	ENDIF
964
965	!
966	!-- Execute user-defined actions
967	CALL user_actions( 'after_integration' )
968
969	!
970	!-- If Galilei transformation is used, determine the distance that the
971	!-- model has moved so far
972	IF ( galilei_transformation ) THEN
973	advected_distance_x = advected_distance_x + u_gtrans * dt_3d
974	advected_distance_y = advected_distance_y + v_gtrans * dt_3d
975	ENDIF
976
977	!
978	!-- Check, if restart is necessary (because cpu-time is expiring or
979	!-- because it is forced by user) and set stop flag
980	!-- This call is skipped if the remote model has already initiated a restart.
981	IF ( .NOT. terminate_run ) CALL check_for_restart
982
983	!
984	!-- Carry out statistical analysis and output at the requested output times.
985	!-- The MOD function is used for calculating the output time counters (like
986	!-- time_dopr) in order to regard a possible decrease of the output time
987	!-- interval in case of restart runs
988
989	!
990	!-- Set a flag indicating that so far no statistics have been created
991	!-- for this time step
992	flow_statistics_called = .FALSE.
993
994	!
995	!-- If required, call flow_statistics for averaging in time
996	IF ( averaging_interval_pr /= 0.0_wp .AND. &
997	( dt_dopr - time_dopr ) <= averaging_interval_pr .AND. &
998	simulated_time >= skip_time_dopr ) THEN
999	time_dopr_av = time_dopr_av + dt_3d
1000	IF ( time_dopr_av >= dt_averaging_input_pr ) THEN
1001	do_sum = .TRUE.
1002	time_dopr_av = MOD( time_dopr_av, &
1003	MAX( dt_averaging_input_pr, dt_3d ) )
1004	ENDIF
1005	ENDIF
1006	IF ( do_sum ) CALL flow_statistics
1007
1008	!
1009	!-- Sum-up 3d-arrays for later output of time-averaged 2d/3d/masked data
1010	IF ( averaging_interval /= 0.0_wp .AND. &
1011	( dt_data_output_av - time_do_av ) <= averaging_interval .AND. &
1012	simulated_time >= skip_time_data_output_av ) &
1013	THEN
1014	time_do_sla = time_do_sla + dt_3d
1015	IF ( time_do_sla >= dt_averaging_input ) THEN
1016	CALL sum_up_3d_data
1017	average_count_3d = average_count_3d + 1
1018	time_do_sla = MOD( time_do_sla, MAX( dt_averaging_input, dt_3d ) )
1019	ENDIF
1020	ENDIF
1021
1022	!
1023	!-- Calculate spectra for time averaging
1024	IF ( averaging_interval_sp /= 0.0_wp .AND. &
1025	( dt_dosp - time_dosp ) <= averaging_interval_sp .AND. &
1026	simulated_time >= skip_time_dosp ) THEN
1027	time_dosp_av = time_dosp_av + dt_3d
1028	IF ( time_dosp_av >= dt_averaging_input_pr ) THEN
1029	CALL calc_spectra
1030	time_dosp_av = MOD( time_dosp_av, &
1031	MAX( dt_averaging_input_pr, dt_3d ) )
1032	ENDIF
1033	ENDIF
1034
1035	!
1036	!-- Profile output (ASCII) on file
1037	IF ( time_dopr_listing >= dt_dopr_listing ) THEN
1038	CALL print_1d
1039	time_dopr_listing = MOD( time_dopr_listing, MAX( dt_dopr_listing, &
1040	dt_3d ) )
1041	ENDIF
1042
1043	!
1044	!-- Graphic output for PROFIL
1045	IF ( time_dopr >= dt_dopr ) THEN
1046	IF ( dopr_n /= 0 ) CALL data_output_profiles
1047	time_dopr = MOD( time_dopr, MAX( dt_dopr, dt_3d ) )
1048	time_dopr_av = 0.0_wp ! due to averaging (see above)
1049	ENDIF
1050
1051	!
1052	!-- Graphic output for time series
1053	IF ( time_dots >= dt_dots ) THEN
1054	CALL data_output_tseries
1055	time_dots = MOD( time_dots, MAX( dt_dots, dt_3d ) )
1056	ENDIF
1057
1058	!
1059	!-- Output of spectra (formatted for use with PROFIL), in case of no
1060	!-- time averaging, spectra has to be calculated before
1061	IF ( time_dosp >= dt_dosp ) THEN
1062	IF ( average_count_sp == 0 ) CALL calc_spectra
1063	CALL data_output_spectra
1064	time_dosp = MOD( time_dosp, MAX( dt_dosp, dt_3d ) )
1065	ENDIF
1066
1067	!
1068	!-- 2d-data output (cross-sections)
1069	IF ( time_do2d_xy >= dt_do2d_xy ) THEN
1070	CALL data_output_2d( 'xy', 0 )
1071	time_do2d_xy = MOD( time_do2d_xy, MAX( dt_do2d_xy, dt_3d ) )
1072	ENDIF
1073	IF ( time_do2d_xz >= dt_do2d_xz ) THEN
1074	CALL data_output_2d( 'xz', 0 )
1075	time_do2d_xz = MOD( time_do2d_xz, MAX( dt_do2d_xz, dt_3d ) )
1076	ENDIF
1077	IF ( time_do2d_yz >= dt_do2d_yz ) THEN
1078	CALL data_output_2d( 'yz', 0 )
1079	time_do2d_yz = MOD( time_do2d_yz, MAX( dt_do2d_yz, dt_3d ) )
1080	ENDIF
1081
1082	!
1083	!-- 3d-data output (volume data)
1084	IF ( time_do3d >= dt_do3d ) THEN
1085	CALL data_output_3d( 0 )
1086	time_do3d = MOD( time_do3d, MAX( dt_do3d, dt_3d ) )
1087	ENDIF
1088
1089	!
1090	!-- Masked data output
1091	DO mid = 1, masks
1092	IF ( time_domask(mid) >= dt_domask(mid) ) THEN
1093	CALL data_output_mask( 0 )
1094	time_domask(mid) = MOD( time_domask(mid), &
1095	MAX( dt_domask(mid), dt_3d ) )
1096	ENDIF
1097	ENDDO
1098
1099	!
1100	!-- Output of time-averaged 2d/3d/masked data
1101	IF ( time_do_av >= dt_data_output_av ) THEN
1102	CALL average_3d_data
1103	CALL data_output_2d( 'xy', 1 )
1104	CALL data_output_2d( 'xz', 1 )
1105	CALL data_output_2d( 'yz', 1 )
1106	CALL data_output_3d( 1 )
1107	DO mid = 1, masks
1108	CALL data_output_mask( 1 )
1109	ENDDO
1110	time_do_av = MOD( time_do_av, MAX( dt_data_output_av, dt_3d ) )
1111	ENDIF
1112
1113	!
1114	!-- Output of particle time series
1115	IF ( particle_advection ) THEN
1116	IF ( time_dopts >= dt_dopts .OR. &
1117	( simulated_time >= particle_advection_start .AND. &
1118	first_call_lpm ) ) THEN
1119	CALL data_output_ptseries
1120	time_dopts = MOD( time_dopts, MAX( dt_dopts, dt_3d ) )
1121	ENDIF
1122	ENDIF
1123
1124	!
1125	!-- Output of dvrp-graphics (isosurface, particles, slicer)
1126	#if defined( __dvrp_graphics )
1127	CALL DVRP_LOG_EVENT( -2, current_timestep_number-1 )
1128	#endif
1129	IF ( time_dvrp >= dt_dvrp ) THEN
1130	CALL data_output_dvrp
1131	time_dvrp = MOD( time_dvrp, MAX( dt_dvrp, dt_3d ) )
1132	ENDIF
1133	#if defined( __dvrp_graphics )
1134	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
1135	#endif
1136
1137	!
1138	!-- If required, set the heat flux for the next time step at a random value
1139	IF ( constant_heatflux .AND. random_heatflux ) CALL disturb_heatflux
1140
1141	!
1142	!-- Execute user-defined actions
1143	CALL user_actions( 'after_timestep' )
1144
1145	!
1146	!-- Determine size of next time step. Save timestep dt_3d because it is
1147	!-- newly calculated in routine timestep, but required further below for
1148	!-- steering the run control output interval
1149	dt_3d_old = dt_3d
1150	CALL timestep
1151
1152	!
1153	!-- Synchronize the timestep in case of nested run.
1154	IF ( nested_run ) THEN
1155	!
1156	!-- Synchronize by unifying the time step.
1157	!-- Global minimum of all time-steps is used for all.
1158	CALL pmci_synchronize
1159	ENDIF
1160
1161	!
1162	!-- Computation and output of run control parameters.
1163	!-- This is also done whenever perturbations have been imposed
1164	IF ( time_run_control >= dt_run_control .OR. &
1165	timestep_scheme(1:5) /= 'runge' .OR. disturbance_created ) &
1166	THEN
1167	! IF ( current_timestep_number == 1 ) THEN
1168	! IF ( nxl < 7 .AND. nxr > 7 .AND. nys < 7 .AND. nyn > 7 ) THEN
1169	! u(10,7,7) = 0.55
1170	! ENDIF
1171	! PRINT*, 'calculating minmax'
1172	! CALL global_min_max( nzb, nzt+1, nysg, nyng, nxlg, nxrg, u, &
1173	! 'abs', 0.0_wp, u_max, u_max_ijk )
1174	! CALL global_min_max( nzb, nzt+1, nysg, nyng, nxlg, nxrg, v, &
1175	! 'abs', 0.0_wp, v_max, v_max_ijk )
1176	! CALL global_min_max( nzb, nzt+1, nysg, nyng, nxlg, nxrg, w, &
1177	! 'abs', 0.0_wp, w_max, w_max_ijk )
1178	! PRINT*, 'calculated u_max = ', u_max, ' myid = ', myid
1179	! ENDIF
1180	CALL run_control
1181	IF ( time_run_control >= dt_run_control ) THEN
1182	time_run_control = MOD( time_run_control, &
1183	MAX( dt_run_control, dt_3d_old ) )
1184	ENDIF
1185	ENDIF
1186
1187	!
1188	!-- Output elapsed simulated time in form of a progress bar on stdout
1189	IF ( myid == 0 ) CALL output_progress_bar
1190
1191	CALL cpu_log( log_point_s(10), 'timesteps', 'stop' )
1192
1193
1194	ENDDO ! time loop
1195
1196	IF ( myid == 0 ) CALL finish_progress_bar
1197
1198	#if defined( __dvrp_graphics )
1199	CALL DVRP_LOG_EVENT( -2, current_timestep_number )
1200	#endif
1201
1202	CALL location_message( 'finished time-stepping', .TRUE. )
1203
1204	END SUBROUTINE time_integration

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