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source: palm/trunk/SOURCE/time_integration.f90 @ 1937

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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 1933 2016-06-13 07:12:51Z suehring $
26	!
27	! 1919 2016-05-27 14:51:23Z raasch
28	! Initial version of purely vertical nesting introduced.
29	!
30	! 1918 2016-05-27 14:35:57Z raasch
31	! determination of time step moved to the end of the time step loop,
32	! the first time step is now always calculated before the time step loop (i.e.
33	! also in case of restart runs)
34	!
35	! 1914 2016-05-26 14:44:07Z witha
36	! Added call for wind turbine model
37	!
38	! 1878 2016-04-19 12:30:36Z hellstea
39	! Synchronization for nested runs rewritten
40	!
41	! 1853 2016-04-11 09:00:35Z maronga
42	! Adjusted for use with radiation_scheme = constant
43	!
44	! 1849 2016-04-08 11:33:18Z hoffmann
45	! Adapted for modularization of microphysics
46	!
47	! 1833 2016-04-07 14:23:03Z raasch
48	! spectrum renamed spectra_mod, spectra related variables moved to spectra_mod
49	!
50	! 1831 2016-04-07 13:15:51Z hoffmann
51	! turbulence renamed collision_turbulence
52	!
53	! 1822 2016-04-07 07:49:42Z hoffmann
54	! icloud_scheme replaced by microphysics_*
55	!
56	! 1808 2016-04-05 19:44:00Z raasch
57	! output message in case unscheduled radiation calls removed
58	!
59	! 1797 2016-03-21 16:50:28Z raasch
60	! introduction of different datatransfer modes
61	!
62	! 1791 2016-03-11 10:41:25Z raasch
63	! call of pmci_update_new removed
64	!
65	! 1786 2016-03-08 05:49:27Z raasch
66	! +module spectrum
67	!
68	! 1783 2016-03-06 18:36:17Z raasch
69	! switch back of netcdf data format for mask output moved to the mask output
70	! routine
71	!
72	! 1781 2016-03-03 15:12:23Z raasch
73	! some pmc calls removed at the beginning (before timeloop),
74	! pmc initialization moved to the main program
75	!
76	! 1764 2016-02-28 12:45:19Z raasch
77	! PMC_ACTIVE flags removed,
78	! bugfix: nest synchronization after first call of timestep
79	!
80	! 1762 2016-02-25 12:31:13Z hellstea
81	! Introduction of nested domain feature
82	!
83	! 1736 2015-12-04 08:56:33Z raasch
84	! no perturbations added to total domain if energy limit has been set zero
85	!
86	! 1691 2015-10-26 16:17:44Z maronga
87	! Added option for spin-ups without land surface and radiation models. Moved calls
88	! for radiation and lan surface schemes.
89	!
90	! 1682 2015-10-07 23:56:08Z knoop
91	! Code annotations made doxygen readable
92	!
93	! 1671 2015-09-25 03:29:37Z raasch
94	! bugfix: ghostpoint exchange for array diss in case that sgs velocities are used
95	! for particles
96	!
97	! 1585 2015-04-30 07:05:52Z maronga
98	! Moved call of radiation scheme. Added support for RRTM
99	!
100	! 1551 2015-03-03 14:18:16Z maronga
101	! Added interface for different radiation schemes.
102	!
103	! 1496 2014-12-02 17:25:50Z maronga
104	! Added calls for the land surface model and radiation scheme
105	!
106	! 1402 2014-05-09 14:25:13Z raasch
107	! location messages modified
108	!
109	! 1384 2014-05-02 14:31:06Z raasch
110	! location messages added
111	!
112	! 1380 2014-04-28 12:40:45Z heinze
113	! CALL of nudge_ref added
114	! bc_pt_t_val and bc_q_t_val are updated in case nudging is used
115	!
116	! 1365 2014-04-22 15:03:56Z boeske
117	! Reset sums_ls_l to zero at each timestep
118	! +sums_ls_l
119	! Calculation of reference state (previously in subroutine calc_mean_profile)
120
121	! 1342 2014-03-26 17:04:47Z kanani
122	! REAL constants defined as wp-kind
123	!
124	! 1320 2014-03-20 08:40:49Z raasch
125	! ONLY-attribute added to USE-statements,
126	! kind-parameters added to all INTEGER and REAL declaration statements,
127	! kinds are defined in new module kinds,
128	! old module precision_kind is removed,
129	! revision history before 2012 removed,
130	! comment fields (!:) to be used for variable explanations added to
131	! all variable declaration statements
132	! 1318 2014-03-17 13:35:16Z raasch
133	! module interfaces removed
134	!
135	! 1308 2014-03-13 14:58:42Z fricke
136	! +netcdf_data_format_save
137	! For masked data, parallel netcdf output is not tested so far, hence
138	! netcdf_data_format is switched back to non-paralell output.
139	!
140	! 1276 2014-01-15 13:40:41Z heinze
141	! Use LSF_DATA also in case of Dirichlet bottom boundary condition for scalars
142	!
143	! 1257 2013-11-08 15:18:40Z raasch
144	! acc-update-host directive for timestep removed
145	!
146	! 1241 2013-10-30 11:36:58Z heinze
147	! Generalize calc_mean_profile for wider use
148	! Determine shf and qsws in dependence on data from LSF_DATA
149	! Determine ug and vg in dependence on data from LSF_DATA
150	! 1221 2013-09-10 08:59:13Z raasch
151	! host update of arrays before timestep is called
152	!
153	! 1179 2013-06-14 05:57:58Z raasch
154	! mean profiles for reference state are only calculated if required,
155	! small bugfix for background communication
156	!
157	! 1171 2013-05-30 11:27:45Z raasch
158	! split of prognostic_equations deactivated (comment lines), for the time being
159	!
160	! 1128 2013-04-12 06:19:32Z raasch
161	! asynchronous transfer of ghost point data realized for acc-optimized version:
162	! prognostic_equations are first called two times for those points required for
163	! the left-right and north-south exchange, respectively, and then for the
164	! remaining points,
165	! those parts requiring global communication moved from prognostic_equations to
166	! here
167	!
168	! 1115 2013-03-26 18:16:16Z hoffmann
169	! calculation of qr and nr is restricted to precipitation
170	!
171	! 1113 2013-03-10 02:48:14Z raasch
172	! GPU-porting of boundary conditions,
173	! openACC directives updated
174	! formal parameter removed from routine boundary_conds
175	!
176	! 1111 2013-03-08 23:54:10Z raasch
177	! +internal timestep counter for cpu statistics added,
178	! openACC directives updated
179	!
180	! 1092 2013-02-02 11:24:22Z raasch
181	! unused variables removed
182	!
183	! 1065 2012-11-22 17:42:36Z hoffmann
184	! exchange of diss (dissipation rate) in case of turbulence = .TRUE. added
185	!
186	! 1053 2012-11-13 17:11:03Z hoffmann
187	! exchange of ghost points for nr, qr added
188	!
189	! 1036 2012-10-22 13:43:42Z raasch
190	! code put under GPL (PALM 3.9)
191	!
192	! 1019 2012-09-28 06:46:45Z raasch
193	! non-optimized version of prognostic_equations removed
194	!
195	! 1015 2012-09-27 09:23:24Z raasch
196	! +call of prognostic_equations_acc
197	!
198	! 1001 2012-09-13 14:08:46Z raasch
199	! all actions concerning leapfrog- and upstream-spline-scheme removed
200	!
201	! 849 2012-03-15 10:35:09Z raasch
202	! advec_particles renamed lpm, first_call_advec_particles renamed first_call_lpm
203	!
204	! 825 2012-02-19 03:03:44Z raasch
205	! wang_collision_kernel renamed wang_kernel
206	!
207	! Revision 1.1 1997/08/11 06:19:04 raasch
208	! Initial revision
209	!
210	!
211	! Description:
212	! ------------
213	!> Integration in time of the model equations, statistical analysis and graphic
214	!> output
215	!------------------------------------------------------------------------------!
216	SUBROUTINE time_integration
217
218
219	USE advec_ws, &
220	ONLY: ws_statistics
221
222	USE arrays_3d, &
223	ONLY: diss, dzu, e, e_p, nr_p, prho, pt, pt_p, pt_init, q_init, q, &
224	ql, ql_c, ql_v, ql_vp, qr_p, q_p, ref_state, rho, sa_p, tend, &
225	u, u_p, v, vpt, v_p, w, w_p
226
227	USE calc_mean_profile_mod, &
228	ONLY: calc_mean_profile
229
230	USE control_parameters, &
231	ONLY: advected_distance_x, advected_distance_y, average_count_3d, &
232	averaging_interval, averaging_interval_pr, &
233	bc_lr_cyc, bc_ns_cyc, bc_pt_t_val, &
234	bc_q_t_val, call_psolver_at_all_substeps, cloud_droplets, &
235	cloud_physics, constant_flux_layer, constant_heatflux, &
236	create_disturbances, dopr_n, constant_diffusion, coupling_mode, &
237	coupling_start_time, current_timestep_number, &
238	disturbance_created, disturbance_energy_limit, dist_range, &
239	do_sum, dt_3d, dt_averaging_input, dt_averaging_input_pr, &
240	dt_coupling, dt_data_output_av, dt_disturb, dt_do2d_xy, &
241	dt_do2d_xz, dt_do2d_yz, dt_do3d, dt_domask,dt_dopts, dt_dopr, &
242	dt_dopr_listing, dt_dots, dt_dvrp, dt_run_control, &
243	end_time, first_call_lpm, galilei_transformation, humidity, &
244	intermediate_timestep_count, &
245	intermediate_timestep_count_max, large_scale_forcing, &
246	loop_optimization, lsf_surf, lsf_vert, masks, &
247	microphysics_seifert, mid, nest_domain, &
248	neutral, nr_timesteps_this_run, nudging, &
249	ocean, on_device, passive_scalar, &
250	prho_reference, pt_reference, pt_slope_offset, random_heatflux, &
251	run_coupled, simulated_time, simulated_time_chr, &
252	skip_time_do2d_xy, skip_time_do2d_xz, skip_time_do2d_yz, &
253	skip_time_do3d, skip_time_domask, skip_time_dopr, &
254	skip_time_data_output_av, sloping_surface, &
255	stop_dt, terminate_coupled, terminate_run, timestep_scheme, &
256	time_coupling, time_do2d_xy, time_do2d_xz, time_do2d_yz, &
257	time_do3d, time_domask, time_dopr, time_dopr_av, &
258	time_dopr_listing, time_dopts, time_dosp, time_dosp_av, &
259	time_dots, time_do_av, time_do_sla, time_disturb, time_dvrp, &
260	time_run_control, time_since_reference_point, &
261	turbulent_inflow, use_initial_profile_as_reference, &
262	use_single_reference_value, u_gtrans, v_gtrans, ws_scheme_mom, &
263	ws_scheme_sca
264
265	USE cpulog, &
266	ONLY: cpu_log, log_point, log_point_s
267
268	USE indices, &
269	ONLY: i_left, i_right, j_north, j_south, nbgp, nx, nxl, nxlg, nxr, &
270	nxrg, nyn, nyng, nys, nysg, nzb, nzt, nzb_u_inner, nzb_v_inner
271
272	USE interaction_droplets_ptq_mod, &
273	ONLY: interaction_droplets_ptq
274
275	USE interfaces
276
277	USE kinds
278
279	USE land_surface_model_mod, &
280	ONLY: land_surface, lsm_energy_balance, lsm_soil_model, &
281	skip_time_do_lsm
282
283	USE ls_forcing_mod, &
284	ONLY: ls_forcing_surf, ls_forcing_vert
285
286	USE microphysics_mod, &
287	ONLY: collision_turbulence
288
289	USE nudge_mod, &
290	ONLY: calc_tnudge, nudge_ref
291
292	USE particle_attributes, &
293	ONLY: particle_advection, particle_advection_start, &
294	use_sgs_for_particles, wang_kernel
295
296	USE pegrid
297
298	USE pmc_interface, &
299	ONLY: nested_run, nesting_mode, pmci_datatrans, &
300	pmci_ensure_nest_mass_conservation, pmci_synchronize
301
302	USE production_e_mod, &
303	ONLY: production_e_init
304
305	USE progress_bar, &
306	ONLY: finish_progress_bar, output_progress_bar
307
308	USE prognostic_equations_mod, &
309	ONLY: prognostic_equations_acc, prognostic_equations_cache, &
310	prognostic_equations_vector
311
312	USE radiation_model_mod, &
313	ONLY: dt_radiation, force_radiation_call, radiation, &
314	radiation_clearsky, radiation_constant, radiation_rrtmg, &
315	radiation_scheme, skip_time_do_radiation, time_radiation
316
317	USE spectra_mod, &
318	ONLY: average_count_sp, averaging_interval_sp, calc_spectra, dt_dosp, &
319	skip_time_dosp
320
321	USE statistics, &
322	ONLY: flow_statistics_called, hom, pr_palm, sums_ls_l, u_max, &
323	u_max_ijk, v_max, v_max_ijk, w_max, w_max_ijk
324
325	USE surface_layer_fluxes_mod, &
326	ONLY: surface_layer_fluxes
327
328	USE user_actions_mod, &
329	ONLY: user_actions
330
331	USE wind_turbine_model_mod, &
332	ONLY: wind_turbine, wtm_forces
333
334	IMPLICIT NONE
335
336	CHARACTER (LEN=9) :: time_to_string !<
337
338	REAL(wp) :: dt_3d_old !< temporary storage of timestep to be used for
339	!< steering of run control output interval
340
341	!
342	!-- At beginning determine the first time step
343	CALL timestep
344
345	!
346	!-- Synchronize the timestep in case of nested run.
347	IF ( nested_run ) THEN
348	!
349	!-- Synchronization by unifying the time step.
350	!-- Global minimum of all time-steps is used for all.
351	CALL pmci_synchronize
352	ENDIF
353
354	!
355	!-- Determine and print out the run control quantities before the first time
356	!-- step of this run. For the initial run, some statistics (e.g. divergence)
357	!-- need to be determined first.
358	IF ( simulated_time == 0.0_wp ) CALL flow_statistics
359	CALL run_control
360
361	!
362	!-- Data exchange between coupled models in case that a call has been omitted
363	!-- at the end of the previous run of a job chain.
364	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
365	!
366	!-- In case of model termination initiated by the local model the coupler
367	!-- must not be called because this would again cause an MPI hang.
368	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
369	CALL surface_coupler
370	time_coupling = time_coupling - dt_coupling
371	ENDDO
372	IF (time_coupling == 0.0_wp .AND. &
373	time_since_reference_point < dt_coupling ) &
374	THEN
375	time_coupling = time_since_reference_point
376	ENDIF
377	ENDIF
378
379	#if defined( __dvrp_graphics )
380	!
381	!-- Time measurement with dvrp software
382	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
383	#endif
384
385	CALL location_message( 'start with time-stepping', .TRUE. )
386	!
387	!-- Start of the time loop
388	DO WHILE ( simulated_time < end_time .AND. .NOT. stop_dt .AND. &
389	.NOT. terminate_run )
390
391	CALL cpu_log( log_point_s(10), 'timesteps', 'start' )
392
393	!
394	!-- Determine ug, vg and w_subs in dependence on data from external file
395	!-- LSF_DATA
396	IF ( large_scale_forcing .AND. lsf_vert ) THEN
397	CALL ls_forcing_vert ( simulated_time )
398	sums_ls_l = 0.0_wp
399	ENDIF
400
401	!
402	!-- Set pt_init and q_init to the current profiles taken from
403	!-- NUDGING_DATA
404	IF ( nudging ) THEN
405	CALL nudge_ref ( simulated_time )
406	!
407	!-- Store temperature gradient at the top boundary for possible Neumann
408	!-- boundary condition
409	bc_pt_t_val = ( pt_init(nzt+1) - pt_init(nzt) ) / dzu(nzt+1)
410	bc_q_t_val = ( q_init(nzt+1) - q_init(nzt) ) / dzu(nzt+1)
411	ENDIF
412
413	!
414	!-- Execute the user-defined actions
415	CALL user_actions( 'before_timestep' )
416
417	!
418	!-- Calculate forces by wind turbines
419	IF ( wind_turbine ) THEN
420
421	CALL cpu_log( log_point(55), 'wind_turbine', 'start' )
422
423	CALL wtm_forces
424
425	CALL cpu_log( log_point(55), 'wind_turbine', 'stop' )
426
427	ENDIF
428
429	!
430	!-- Start of intermediate step loop
431	intermediate_timestep_count = 0
432	DO WHILE ( intermediate_timestep_count < &
433	intermediate_timestep_count_max )
434
435	intermediate_timestep_count = intermediate_timestep_count + 1
436
437	!
438	!-- Set the steering factors for the prognostic equations which depend
439	!-- on the timestep scheme
440	CALL timestep_scheme_steering
441
442	!
443	!-- Calculate those variables needed in the tendency terms which need
444	!-- global communication
445	IF ( .NOT. use_single_reference_value .AND. &
446	.NOT. use_initial_profile_as_reference ) THEN
447	!
448	!-- Horizontally averaged profiles to be used as reference state in
449	!-- buoyancy terms (WARNING: only the respective last call of
450	!-- calc_mean_profile defines the reference state!)
451	IF ( .NOT. neutral ) THEN
452	CALL calc_mean_profile( pt, 4 )
453	ref_state(:) = hom(:,1,4,0) ! this is used in the buoyancy term
454	ENDIF
455	IF ( ocean ) THEN
456	CALL calc_mean_profile( rho, 64 )
457	ref_state(:) = hom(:,1,64,0)
458	ENDIF
459	IF ( humidity ) THEN
460	CALL calc_mean_profile( vpt, 44 )
461	ref_state(:) = hom(:,1,44,0)
462	ENDIF
463
464	ENDIF
465
466	IF ( .NOT. constant_diffusion ) CALL production_e_init
467	IF ( ( ws_scheme_mom .OR. ws_scheme_sca ) .AND. &
468	intermediate_timestep_count == 1 ) CALL ws_statistics
469	!
470	!-- In case of nudging calculate current nudging time scale and horizontal
471	!-- means of u, v, pt and q
472	IF ( nudging ) THEN
473	CALL calc_tnudge( simulated_time )
474	CALL calc_mean_profile( u, 1 )
475	CALL calc_mean_profile( v, 2 )
476	CALL calc_mean_profile( pt, 4 )
477	CALL calc_mean_profile( q, 41 )
478	ENDIF
479
480	!
481	!-- Solve the prognostic equations. A fast cache optimized version with
482	!-- only one single loop is used in case of Piascek-Williams advection
483	!-- scheme. NEC vector machines use a different version, because
484	!-- in the other versions a good vectorization is prohibited due to
485	!-- inlining problems.
486	IF ( loop_optimization == 'cache' ) THEN
487	CALL prognostic_equations_cache
488	ELSEIF ( loop_optimization == 'vector' ) THEN
489	CALL prognostic_equations_vector
490	ELSEIF ( loop_optimization == 'acc' ) THEN
491	i_left = nxl; i_right = nxr
492	j_south = nys; j_north = nyn
493	CALL prognostic_equations_acc
494
495	! i_left = nxl; i_right = nxl+nbgp-1
496	! j_south = nys; j_north = nyn
497	! CALL prognostic_equations_acc
498	! i_left = nxr-nbgp+1; i_right = nxr
499	! j_south = nys; j_north = nyn
500	! CALL prognostic_equations_acc
501
502	!
503	!-- Exchange of ghost points (lateral boundary conditions)
504	IF ( background_communication ) THEN
505
506	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
507
508	send_receive = 'lr'
509	sendrecv_in_background = .TRUE.
510	req = 0
511	req_count = 0
512
513	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
514	on_device = .TRUE. ! to be removed after complete porting
515	ELSE ! of ghost point exchange
516	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
517	ENDIF
518
519	CALL exchange_horiz( u_p, nbgp )
520	CALL exchange_horiz( v_p, nbgp )
521	CALL exchange_horiz( w_p, nbgp )
522	CALL exchange_horiz( pt_p, nbgp )
523	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
524	IF ( ocean ) THEN
525	CALL exchange_horiz( sa_p, nbgp )
526	CALL exchange_horiz( rho, nbgp )
527	CALL exchange_horiz( prho, nbgp )
528	ENDIF
529	IF (humidity .OR. passive_scalar) THEN
530	CALL exchange_horiz( q_p, nbgp )
531	IF ( cloud_physics .AND. microphysics_seifert ) THEN
532	CALL exchange_horiz( qr_p, nbgp )
533	CALL exchange_horiz( nr_p, nbgp )
534	ENDIF
535	ENDIF
536	IF ( cloud_droplets ) THEN
537	CALL exchange_horiz( ql, nbgp )
538	CALL exchange_horiz( ql_c, nbgp )
539	CALL exchange_horiz( ql_v, nbgp )
540	CALL exchange_horiz( ql_vp, nbgp )
541	ENDIF
542	IF ( wang_kernel .OR. collision_turbulence .OR. &
543	use_sgs_for_particles ) THEN
544	CALL exchange_horiz( diss, nbgp )
545	ENDIF
546
547	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
548	on_device = .FALSE. ! to be removed after complete porting
549	ELSE ! of ghost point exchange
550	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
551	ENDIF
552
553	sendrecv_in_background = .FALSE.
554
555	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'pause' )
556
557	ENDIF
558
559	! i_left = nxl+nbgp; i_right = nxr-nbgp
560	! j_south = nys; j_north = nys+nbgp-1
561	! CALL prognostic_equations_acc
562	! i_left = nxl+nbgp; i_right = nxr-nbgp
563	! j_south = nyn-nbgp+1; j_north = nyn
564	! CALL prognostic_equations_acc
565
566	IF ( background_communication ) THEN
567	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'start' )
568	#if defined( __parallel )
569	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
570	#endif
571	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'pause' )
572
573	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'continue' )
574
575	send_receive = 'ns'
576	sendrecv_in_background = .TRUE.
577	req = 0
578	req_count = 0
579
580	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
581	on_device = .TRUE. ! to be removed after complete porting
582	ELSE ! of ghost point exchange
583	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
584	ENDIF
585
586	CALL exchange_horiz( u_p, nbgp )
587	CALL exchange_horiz( v_p, nbgp )
588	CALL exchange_horiz( w_p, nbgp )
589	CALL exchange_horiz( pt_p, nbgp )
590	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
591	IF ( ocean ) THEN
592	CALL exchange_horiz( sa_p, nbgp )
593	CALL exchange_horiz( rho, nbgp )
594	CALL exchange_horiz( prho, nbgp )
595	ENDIF
596	IF (humidity .OR. passive_scalar) THEN
597	CALL exchange_horiz( q_p, nbgp )
598	IF ( cloud_physics .AND. microphysics_seifert ) THEN
599	CALL exchange_horiz( qr_p, nbgp )
600	CALL exchange_horiz( nr_p, nbgp )
601	ENDIF
602	ENDIF
603	IF ( cloud_droplets ) THEN
604	CALL exchange_horiz( ql, nbgp )
605	CALL exchange_horiz( ql_c, nbgp )
606	CALL exchange_horiz( ql_v, nbgp )
607	CALL exchange_horiz( ql_vp, nbgp )
608	ENDIF
609	IF ( wang_kernel .OR. collision_turbulence .OR. &
610	use_sgs_for_particles ) THEN
611	CALL exchange_horiz( diss, nbgp )
612	ENDIF
613
614	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
615	on_device = .FALSE. ! to be removed after complete porting
616	ELSE ! of ghost point exchange
617	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
618	ENDIF
619
620	sendrecv_in_background = .FALSE.
621
622	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
623
624	ENDIF
625
626	! i_left = nxl+nbgp; i_right = nxr-nbgp
627	! j_south = nys+nbgp; j_north = nyn-nbgp
628	! CALL prognostic_equations_acc
629
630	IF ( background_communication ) THEN
631	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'continue' )
632	#if defined( __parallel )
633	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
634	#endif
635	send_receive = 'al'
636	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'stop' )
637	ENDIF
638
639	ENDIF
640
641	!
642	!-- Particle transport/physics with the Lagrangian particle model
643	!-- (only once during intermediate steps, because it uses an Euler-step)
644	!-- ### particle model should be moved before prognostic_equations, in order
645	!-- to regard droplet interactions directly
646	IF ( particle_advection .AND. &
647	simulated_time >= particle_advection_start .AND. &
648	intermediate_timestep_count == 1 ) THEN
649	CALL lpm
650	first_call_lpm = .FALSE.
651	ENDIF
652
653	!
654	!-- Interaction of droplets with temperature and specific humidity.
655	!-- Droplet condensation and evaporation is calculated within
656	!-- advec_particles.
657	IF ( cloud_droplets .AND. &
658	intermediate_timestep_count == intermediate_timestep_count_max )&
659	THEN
660	CALL interaction_droplets_ptq
661	ENDIF
662
663	!
664	!-- Exchange of ghost points (lateral boundary conditions)
665	IF ( .NOT. background_communication ) THEN
666
667	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
668
669	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
670	on_device = .TRUE. ! to be removed after complete porting
671	ELSE ! of ghost point exchange
672	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
673	ENDIF
674
675	CALL exchange_horiz( u_p, nbgp )
676	CALL exchange_horiz( v_p, nbgp )
677	CALL exchange_horiz( w_p, nbgp )
678	CALL exchange_horiz( pt_p, nbgp )
679	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
680	IF ( ocean ) THEN
681	CALL exchange_horiz( sa_p, nbgp )
682	CALL exchange_horiz( rho, nbgp )
683	CALL exchange_horiz( prho, nbgp )
684	ENDIF
685	IF (humidity .OR. passive_scalar) THEN
686	CALL exchange_horiz( q_p, nbgp )
687	IF ( cloud_physics .AND. microphysics_seifert ) THEN
688	CALL exchange_horiz( qr_p, nbgp )
689	CALL exchange_horiz( nr_p, nbgp )
690	ENDIF
691	ENDIF
692	IF ( cloud_droplets ) THEN
693	CALL exchange_horiz( ql, nbgp )
694	CALL exchange_horiz( ql_c, nbgp )
695	CALL exchange_horiz( ql_v, nbgp )
696	CALL exchange_horiz( ql_vp, nbgp )
697	ENDIF
698	IF ( wang_kernel .OR. collision_turbulence .OR. &
699	use_sgs_for_particles ) THEN
700	CALL exchange_horiz( diss, nbgp )
701	ENDIF
702
703	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
704	on_device = .FALSE. ! to be removed after complete porting
705	ELSE ! of ghost point exchange
706	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
707	ENDIF
708
709	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
710
711	ENDIF
712
713	!
714	!-- Boundary conditions for the prognostic quantities (except of the
715	!-- velocities at the outflow in case of a non-cyclic lateral wall)
716	CALL boundary_conds
717
718	!
719	!-- Swap the time levels in preparation for the next time step.
720	CALL swap_timelevel
721
722	IF ( nested_run ) THEN
723
724	CALL cpu_log( log_point(60), 'nesting', 'start' )
725	!
726	!-- Domain nesting. The data transfer subroutines pmci_parent_datatrans
727	!-- and pmci_child_datatrans are called inside the wrapper
728	!-- subroutine pmci_datatrans according to the control parameters
729	!-- nesting_mode and nesting_datatransfer_mode.
730	!-- TO_DO: why is nesting_mode given as a parameter here?
731	CALL pmci_datatrans( nesting_mode )
732
733	IF ( TRIM( nesting_mode ) == 'two-way' .OR. &
734	nesting_mode == 'vertical' ) THEN
735	!
736	!-- Exchange_horiz is needed for all parent-domains after the
737	!-- anterpolation
738	CALL exchange_horiz( u, nbgp )
739	CALL exchange_horiz( v, nbgp )
740	CALL exchange_horiz( w, nbgp )
741	IF ( .NOT. neutral ) THEN
742	CALL exchange_horiz( pt, nbgp )
743	ENDIF
744	IF ( humidity .OR. passive_scalar ) THEN
745	CALL exchange_horiz( q, nbgp )
746	ENDIF
747	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e, nbgp )
748	ENDIF
749	!
750	!-- Correct the w top-BC in nest domains to ensure mass conservation.
751	!-- This action must never be done for the root domain. Vertical
752	!-- nesting implies mass conservation.
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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