source: palm/trunk/SOURCE/time_integration.f90 @ 1879

Last change on this file since 1879 was 1879, checked in by hellstea, 6 years ago

last commit documented

  • Property svn:keywords set to Id
File size: 44.1 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 1879 2016-04-20 08:39:42Z hellstea $
26!
27! 1878 2016-04-19 12:30:36Z hellstea
28! Synchronization for nested runs rewritten
29!
30! 1853 2016-04-11 09:00:35Z maronga
31! Adjusted for use with radiation_scheme = constant
32!
33! 1849 2016-04-08 11:33:18Z hoffmann
34! Adapted for modularization of microphysics
35!
36! 1833 2016-04-07 14:23:03Z raasch
37! spectrum renamed spectra_mod, spectra related variables moved to spectra_mod
38!
39! 1831 2016-04-07 13:15:51Z hoffmann
40! turbulence renamed collision_turbulence
41!
42! 1822 2016-04-07 07:49:42Z hoffmann
43! icloud_scheme replaced by microphysics_*
44!
45! 1808 2016-04-05 19:44:00Z raasch
46! output message in case unscheduled radiation calls removed
47!
48! 1797 2016-03-21 16:50:28Z raasch
49! introduction of different datatransfer modes
50!
51! 1791 2016-03-11 10:41:25Z raasch
52! call of pmci_update_new removed
53!
54! 1786 2016-03-08 05:49:27Z raasch
55! +module spectrum
56!
57! 1783 2016-03-06 18:36:17Z raasch
58! switch back of netcdf data format for mask output moved to the mask output
59! routine
60!
61! 1781 2016-03-03 15:12:23Z raasch
62! some pmc calls removed at the beginning (before timeloop),
63! pmc initialization moved to the main program
64!
65! 1764 2016-02-28 12:45:19Z raasch
66! PMC_ACTIVE flags removed,
67! bugfix: nest synchronization after first call of timestep
68!
69! 1762 2016-02-25 12:31:13Z hellstea
70! Introduction of nested domain feature
71!
72! 1736 2015-12-04 08:56:33Z raasch
73! no perturbations added to total domain if energy limit has been set zero
74!
75! 1691 2015-10-26 16:17:44Z maronga
76! Added option for spin-ups without land surface and radiation models. Moved calls
77! for radiation and lan surface schemes.
78!
79! 1682 2015-10-07 23:56:08Z knoop
80! Code annotations made doxygen readable
81!
82! 1671 2015-09-25 03:29:37Z raasch
83! bugfix: ghostpoint exchange for array diss in case that sgs velocities are used
84! for particles
85!
86! 1585 2015-04-30 07:05:52Z maronga
87! Moved call of radiation scheme. Added support for RRTM
88!
89! 1551 2015-03-03 14:18:16Z maronga
90! Added interface for different radiation schemes.
91!
92! 1496 2014-12-02 17:25:50Z maronga
93! Added calls for the land surface model and radiation scheme
94!
95! 1402 2014-05-09 14:25:13Z raasch
96! location messages modified
97!
98! 1384 2014-05-02 14:31:06Z raasch
99! location messages added
100!
101! 1380 2014-04-28 12:40:45Z heinze
102! CALL of nudge_ref added
103! bc_pt_t_val and bc_q_t_val are updated in case nudging is used
104!
105! 1365 2014-04-22 15:03:56Z boeske
106! Reset sums_ls_l to zero at each timestep
107! +sums_ls_l
108! Calculation of reference state (previously in subroutine calc_mean_profile)
109
110! 1342 2014-03-26 17:04:47Z kanani
111! REAL constants defined as wp-kind
112!
113! 1320 2014-03-20 08:40:49Z raasch
114! ONLY-attribute added to USE-statements,
115! kind-parameters added to all INTEGER and REAL declaration statements,
116! kinds are defined in new module kinds,
117! old module precision_kind is removed,
118! revision history before 2012 removed,
119! comment fields (!:) to be used for variable explanations added to
120! all variable declaration statements
121! 1318 2014-03-17 13:35:16Z raasch
122! module interfaces removed
123!
124! 1308 2014-03-13 14:58:42Z fricke
125! +netcdf_data_format_save
126! For masked data, parallel netcdf output is not tested so far, hence
127! netcdf_data_format is switched back to non-paralell output.
128!
129! 1276 2014-01-15 13:40:41Z heinze
130! Use LSF_DATA also in case of Dirichlet bottom boundary condition for scalars
131!
132! 1257 2013-11-08 15:18:40Z raasch
133! acc-update-host directive for timestep removed
134!
135! 1241 2013-10-30 11:36:58Z heinze
136! Generalize calc_mean_profile for wider use
137! Determine shf and qsws in dependence on data from LSF_DATA
138! Determine ug and vg in dependence on data from LSF_DATA
139! 1221 2013-09-10 08:59:13Z raasch
140! host update of arrays before timestep is called
141!
142! 1179 2013-06-14 05:57:58Z raasch
143! mean profiles for reference state are only calculated if required,
144! small bugfix for background communication
145!
146! 1171 2013-05-30 11:27:45Z raasch
147! split of prognostic_equations deactivated (comment lines), for the time being
148!
149! 1128 2013-04-12 06:19:32Z raasch
150! asynchronous transfer of ghost point data realized for acc-optimized version:
151! prognostic_equations are first called two times for those points required for
152! the left-right and north-south exchange, respectively, and then for the
153! remaining points,
154! those parts requiring global communication moved from prognostic_equations to
155! here
156!
157! 1115 2013-03-26 18:16:16Z hoffmann
158! calculation of qr and nr is restricted to precipitation
159!
160! 1113 2013-03-10 02:48:14Z raasch
161! GPU-porting of boundary conditions,
162! openACC directives updated
163! formal parameter removed from routine boundary_conds
164!
165! 1111 2013-03-08 23:54:10Z raasch
166! +internal timestep counter for cpu statistics added,
167! openACC directives updated
168!
169! 1092 2013-02-02 11:24:22Z raasch
170! unused variables removed
171!
172! 1065 2012-11-22 17:42:36Z hoffmann
173! exchange of diss (dissipation rate) in case of turbulence = .TRUE. added
174!
175! 1053 2012-11-13 17:11:03Z hoffmann
176! exchange of ghost points for nr, qr added
177!
178! 1036 2012-10-22 13:43:42Z raasch
179! code put under GPL (PALM 3.9)
180!
181! 1019 2012-09-28 06:46:45Z raasch
182! non-optimized version of prognostic_equations removed
183!
184! 1015 2012-09-27 09:23:24Z raasch
185! +call of prognostic_equations_acc
186!
187! 1001 2012-09-13 14:08:46Z raasch
188! all actions concerning leapfrog- and upstream-spline-scheme removed
189!
190! 849 2012-03-15 10:35:09Z raasch
191! advec_particles renamed lpm, first_call_advec_particles renamed first_call_lpm
192!
193! 825 2012-02-19 03:03:44Z raasch
194! wang_collision_kernel renamed wang_kernel
195!
196! Revision 1.1  1997/08/11 06:19:04  raasch
197! Initial revision
198!
199!
200! Description:
201! ------------
202!> Integration in time of the model equations, statistical analysis and graphic
203!> output
204!------------------------------------------------------------------------------!
205 SUBROUTINE time_integration
206 
207
208    USE advec_ws,                                                              &
209        ONLY:  ws_statistics
210
211    USE arrays_3d,                                                             &
212        ONLY:  diss, dzu, e, e_p, nr_p, prho, pt, pt_p, pt_init, q_init, q,    &
213               ql, ql_c, ql_v, ql_vp, qr_p, q_p, ref_state, rho, sa_p, tend,   &
214               u, u_p, v, vpt, v_p, w, w_p
215
216    USE calc_mean_profile_mod,                                                 &
217        ONLY:  calc_mean_profile
218
219    USE control_parameters,                                                    &
220        ONLY:  advected_distance_x, advected_distance_y, average_count_3d,     &
221               averaging_interval, averaging_interval_pr,                      &
222               bc_lr_cyc, bc_ns_cyc, bc_pt_t_val,                              &
223               bc_q_t_val, call_psolver_at_all_substeps, cloud_droplets,       &
224               cloud_physics, constant_flux_layer, constant_heatflux,          &
225               create_disturbances, dopr_n, constant_diffusion, coupling_mode, &
226               coupling_start_time, current_timestep_number,                   &
227               disturbance_created, disturbance_energy_limit, dist_range,      &
228               do_sum, dt_3d, dt_averaging_input, dt_averaging_input_pr,       &
229               dt_coupling, dt_data_output_av, dt_disturb, dt_do2d_xy,         &
230               dt_do2d_xz, dt_do2d_yz, dt_do3d, dt_domask,dt_dopts, dt_dopr,   &
231               dt_dopr_listing, dt_dots, dt_dvrp, dt_run_control,              &
232               end_time, first_call_lpm, galilei_transformation, humidity,     &
233               intermediate_timestep_count,                                    &
234               intermediate_timestep_count_max, large_scale_forcing,           &
235               loop_optimization, lsf_surf, lsf_vert, masks,                   &
236               microphysics_seifert, mid, nest_domain,                         &
237               neutral, nr_timesteps_this_run, nudging,                        &
238               ocean, on_device, passive_scalar,                               &
239               prho_reference, pt_reference, pt_slope_offset, random_heatflux, &
240               run_coupled, simulated_time, simulated_time_chr,                &
241               skip_time_do2d_xy, skip_time_do2d_xz, skip_time_do2d_yz,        &
242               skip_time_do3d, skip_time_domask, skip_time_dopr,               &
243               skip_time_data_output_av, sloping_surface,                      &
244               stop_dt, terminate_coupled, terminate_run, timestep_scheme,     &
245               time_coupling, time_do2d_xy, time_do2d_xz, time_do2d_yz,        &
246               time_do3d, time_domask, time_dopr, time_dopr_av,                &
247               time_dopr_listing, time_dopts, time_dosp, time_dosp_av,         &
248               time_dots, time_do_av, time_do_sla, time_disturb, time_dvrp,    &
249               time_run_control, time_since_reference_point,                   &
250               turbulent_inflow, use_initial_profile_as_reference,             &
251               use_single_reference_value, u_gtrans, v_gtrans, ws_scheme_mom,  &
252               ws_scheme_sca
253
254    USE cpulog,                                                                &
255        ONLY:  cpu_log, log_point, log_point_s
256
257    USE indices,                                                               &
258        ONLY:  i_left, i_right, j_north, j_south, nbgp, nx, nxl, nxlg, nxr,    &
259               nxrg, nyn, nys, nzb, nzt, nzb_u_inner, nzb_v_inner
260
261    USE interaction_droplets_ptq_mod,                                          &
262        ONLY:  interaction_droplets_ptq
263
264    USE kinds
265
266    USE land_surface_model_mod,                                                &
267        ONLY:  land_surface, lsm_energy_balance, lsm_soil_model,               &
268               skip_time_do_lsm
269
270    USE ls_forcing_mod,                                                        &
271        ONLY:  ls_forcing_surf, ls_forcing_vert
272
273    USE microphysics_mod,                                                      &
274        ONLY: collision_turbulence
275
276    USE nudge_mod,                                                             &
277        ONLY:  calc_tnudge, nudge_ref
278
279    USE particle_attributes,                                                   &
280        ONLY:  particle_advection, particle_advection_start,                   &
281               use_sgs_for_particles, wang_kernel
282
283    USE pegrid
284
285    USE pmc_interface,                                                         &
286        ONLY:  client_to_server, nested_run, nesting_mode,                     &
287               pmci_datatrans, pmci_ensure_nest_mass_conservation,             &
288               pmci_synchronize, server_to_client
289
290    USE production_e_mod,                                                      &
291        ONLY:  production_e_init
292
293    USE progress_bar,                                                          &
294        ONLY:  finish_progress_bar, output_progress_bar
295
296    USE prognostic_equations_mod,                                              &
297        ONLY:  prognostic_equations_acc, prognostic_equations_cache,           &
298               prognostic_equations_vector
299
300    USE radiation_model_mod,                                                   &
301        ONLY: dt_radiation, force_radiation_call, radiation,                   &
302              radiation_clearsky, radiation_constant, radiation_rrtmg,         &
303              radiation_scheme, skip_time_do_radiation, time_radiation
304
305    USE spectra_mod,                                                           &
306        ONLY: average_count_sp, averaging_interval_sp, calc_spectra, dt_dosp,  &
307              skip_time_dosp
308
309    USE statistics,                                                            &
310        ONLY:  flow_statistics_called, hom, pr_palm, sums_ls_l
311
312    USE surface_layer_fluxes_mod,                                              &
313        ONLY:  surface_layer_fluxes
314
315    USE user_actions_mod,                                                      &
316        ONLY:  user_actions
317
318    IMPLICIT NONE
319
320    CHARACTER (LEN=9) ::  time_to_string          !<
321
322!
323!-- At the beginning of a simulation determine the time step as well as
324!-- determine and print out the run control parameters
325    IF ( simulated_time == 0.0_wp )  CALL timestep
326
327!
328!-- Synchronize the timestep in case of nested run.
329    IF ( nested_run )  THEN
330!
331!--    Synchronization by unifying the time step.
332!--    Global minimum of all time-steps is used for all.
333       CALL pmci_synchronize
334    ENDIF
335
336    CALL run_control
337
338!
339!-- Data exchange between coupled models in case that a call has been omitted
340!-- at the end of the previous run of a job chain.
341    IF ( coupling_mode /= 'uncoupled'  .AND.  run_coupled )  THEN
342!
343!--    In case of model termination initiated by the local model the coupler
344!--    must not be called because this would again cause an MPI hang.
345       DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
346          CALL surface_coupler
347          time_coupling = time_coupling - dt_coupling
348       ENDDO
349       IF (time_coupling == 0.0_wp .AND. time_since_reference_point < dt_coupling)&
350       THEN
351          time_coupling = time_since_reference_point
352       ENDIF
353    ENDIF
354
355#if defined( __dvrp_graphics )
356!
357!-- Time measurement with dvrp software 
358    CALL DVRP_LOG_EVENT( 2, current_timestep_number )
359#endif
360
361    CALL location_message( 'start with time-stepping', .TRUE. )
362!
363!-- Start of the time loop
364    DO  WHILE ( simulated_time < end_time  .AND.  .NOT. stop_dt  .AND. &
365                .NOT. terminate_run )
366
367       CALL cpu_log( log_point_s(10), 'timesteps', 'start' )
368
369!
370!--    Determine size of next time step
371       IF ( simulated_time /= 0.0_wp )  THEN
372          CALL timestep
373!
374!--       Synchronize the timestep in case of nested run.
375          IF ( nested_run )  THEN
376!
377!--          Synchronize by unifying the time step.
378!--          Global minimum of all time-steps is used for all.     
379             CALL pmci_synchronize
380          ENDIF
381       ENDIF
382
383!
384!--    Determine ug, vg and w_subs in dependence on data from external file
385!--    LSF_DATA
386       IF ( large_scale_forcing .AND. lsf_vert )  THEN
387           CALL ls_forcing_vert ( simulated_time )
388           sums_ls_l = 0.0_wp
389       ENDIF
390
391!
392!--    Set pt_init and q_init to the current profiles taken from
393!--    NUDGING_DATA
394       IF ( nudging )  THEN
395           CALL nudge_ref ( simulated_time )
396!
397!--        Store temperature gradient at the top boundary for possible Neumann
398!--        boundary condition
399           bc_pt_t_val = ( pt_init(nzt+1) - pt_init(nzt) ) / dzu(nzt+1)
400           bc_q_t_val  = ( q_init(nzt+1) - q_init(nzt) ) / dzu(nzt+1)
401       ENDIF
402
403!
404!--    Execute the user-defined actions
405       CALL user_actions( 'before_timestep' )
406
407!
408!--    Start of intermediate step loop
409       intermediate_timestep_count = 0
410       DO  WHILE ( intermediate_timestep_count < &
411                   intermediate_timestep_count_max )
412
413          intermediate_timestep_count = intermediate_timestep_count + 1
414
415!
416!--       Set the steering factors for the prognostic equations which depend
417!--       on the timestep scheme
418          CALL timestep_scheme_steering
419
420!
421!--       Calculate those variables needed in the tendency terms which need
422!--       global communication
423          IF ( .NOT. use_single_reference_value  .AND. &
424               .NOT. use_initial_profile_as_reference )  THEN
425!
426!--          Horizontally averaged profiles to be used as reference state in
427!--          buoyancy terms (WARNING: only the respective last call of
428!--          calc_mean_profile defines the reference state!)
429             IF ( .NOT. neutral )  THEN
430                CALL calc_mean_profile( pt, 4 )
431                ref_state(:)  = hom(:,1,4,0) ! this is used in the buoyancy term
432             ENDIF
433             IF ( ocean )  THEN
434                CALL calc_mean_profile( rho, 64 )
435                ref_state(:)  = hom(:,1,64,0)
436             ENDIF
437             IF ( humidity )  THEN
438                CALL calc_mean_profile( vpt, 44 )
439                ref_state(:)  = hom(:,1,44,0)
440             ENDIF
441
442          ENDIF
443
444          IF ( .NOT. constant_diffusion )  CALL production_e_init
445          IF ( ( ws_scheme_mom .OR. ws_scheme_sca )  .AND.  &
446               intermediate_timestep_count == 1 )  CALL ws_statistics
447!
448!--       In case of nudging calculate current nudging time scale and horizontal
449!--       means of u, v, pt and q
450          IF ( nudging )  THEN
451             CALL calc_tnudge( simulated_time )
452             CALL calc_mean_profile( u, 1 )
453             CALL calc_mean_profile( v, 2 )
454             CALL calc_mean_profile( pt, 4 )
455             CALL calc_mean_profile( q, 41 )
456          ENDIF
457
458!
459!--       Solve the prognostic equations. A fast cache optimized version with
460!--       only one single loop is used in case of Piascek-Williams advection
461!--       scheme. NEC vector machines use a different version, because
462!--       in the other versions a good vectorization is prohibited due to
463!--       inlining problems.
464          IF ( loop_optimization == 'cache' )  THEN
465             CALL prognostic_equations_cache
466          ELSEIF ( loop_optimization == 'vector' )  THEN
467             CALL prognostic_equations_vector
468          ELSEIF ( loop_optimization == 'acc' )  THEN
469             i_left  = nxl;         i_right = nxr
470             j_south = nys;         j_north = nyn
471             CALL prognostic_equations_acc
472
473!             i_left  = nxl;         i_right = nxl+nbgp-1
474!             j_south = nys;         j_north = nyn
475!             CALL prognostic_equations_acc
476!             i_left  = nxr-nbgp+1;  i_right = nxr
477!             j_south = nys;         j_north = nyn
478!             CALL prognostic_equations_acc
479
480!
481!--          Exchange of ghost points (lateral boundary conditions)
482             IF ( background_communication )  THEN
483
484                CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
485               
486                send_receive = 'lr'
487                sendrecv_in_background = .TRUE.
488                req          = 0
489                req_count    = 0
490
491                IF ( numprocs == 1 )  THEN    ! workaround for single-core GPU runs
492                   on_device = .TRUE.         ! to be removed after complete porting
493                ELSE                          ! of ghost point exchange
494                   !$acc update host( e_p, pt_p, u_p, v_p, w_p )
495                ENDIF
496
497                CALL exchange_horiz( u_p, nbgp )
498                CALL exchange_horiz( v_p, nbgp )
499                CALL exchange_horiz( w_p, nbgp )
500                CALL exchange_horiz( pt_p, nbgp )
501                IF ( .NOT. constant_diffusion )  CALL exchange_horiz( e_p, nbgp )
502                IF ( ocean )  THEN
503                   CALL exchange_horiz( sa_p, nbgp )
504                   CALL exchange_horiz( rho, nbgp )
505                  CALL exchange_horiz( prho, nbgp )
506                ENDIF
507                IF (humidity  .OR.  passive_scalar)  THEN
508                   CALL exchange_horiz( q_p, nbgp )
509                   IF ( cloud_physics .AND. microphysics_seifert )  THEN
510                      CALL exchange_horiz( qr_p, nbgp )
511                      CALL exchange_horiz( nr_p, nbgp )
512                   ENDIF
513                ENDIF
514                IF ( cloud_droplets )  THEN
515                   CALL exchange_horiz( ql, nbgp )
516                   CALL exchange_horiz( ql_c, nbgp )
517                   CALL exchange_horiz( ql_v, nbgp )
518                   CALL exchange_horiz( ql_vp, nbgp )
519                ENDIF
520                IF ( wang_kernel  .OR.  collision_turbulence  .OR.             &
521                     use_sgs_for_particles )  THEN
522                   CALL exchange_horiz( diss, nbgp )
523                ENDIF
524
525                IF ( numprocs == 1 )  THEN    ! workaround for single-core GPU runs
526                   on_device = .FALSE.        ! to be removed after complete porting
527                ELSE                          ! of ghost point exchange
528                   !$acc update device( e_p, pt_p, u_p, v_p, w_p )
529                ENDIF
530
531                sendrecv_in_background = .FALSE.
532
533                CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'pause' )
534
535             ENDIF
536
537!             i_left  = nxl+nbgp;    i_right = nxr-nbgp
538!             j_south = nys;         j_north = nys+nbgp-1
539!             CALL prognostic_equations_acc
540!             i_left  = nxl+nbgp;    i_right = nxr-nbgp
541!             j_south = nyn-nbgp+1;  j_north = nyn
542!             CALL prognostic_equations_acc
543
544             IF ( background_communication )  THEN
545                CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'start' )
546#if defined( __parallel )
547                CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
548#endif
549                CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'pause' )
550
551                CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'continue' )
552
553                send_receive = 'ns'
554                sendrecv_in_background = .TRUE.
555                req          = 0
556                req_count    = 0
557
558                IF ( numprocs == 1 )  THEN    ! workaround for single-core GPU runs
559                   on_device = .TRUE.         ! to be removed after complete porting
560                ELSE                          ! of ghost point exchange
561                   !$acc update host( e_p, pt_p, u_p, v_p, w_p )
562                ENDIF
563
564                CALL exchange_horiz( u_p, nbgp )
565                CALL exchange_horiz( v_p, nbgp )
566                CALL exchange_horiz( w_p, nbgp )
567                CALL exchange_horiz( pt_p, nbgp )
568                IF ( .NOT. constant_diffusion )  CALL exchange_horiz( e_p, nbgp )
569                IF ( ocean )  THEN
570                   CALL exchange_horiz( sa_p, nbgp )
571                   CALL exchange_horiz( rho, nbgp )
572                  CALL exchange_horiz( prho, nbgp )
573                ENDIF
574                IF (humidity  .OR.  passive_scalar)  THEN
575                   CALL exchange_horiz( q_p, nbgp )
576                   IF ( cloud_physics .AND. microphysics_seifert )  THEN
577                      CALL exchange_horiz( qr_p, nbgp )
578                      CALL exchange_horiz( nr_p, nbgp )
579                   ENDIF
580                ENDIF
581                IF ( cloud_droplets )  THEN
582                   CALL exchange_horiz( ql, nbgp )
583                   CALL exchange_horiz( ql_c, nbgp )
584                   CALL exchange_horiz( ql_v, nbgp )
585                   CALL exchange_horiz( ql_vp, nbgp )
586                ENDIF
587                IF ( wang_kernel  .OR.  collision_turbulence  .OR.             &
588                     use_sgs_for_particles )  THEN
589                   CALL exchange_horiz( diss, nbgp )
590                ENDIF
591
592                IF ( numprocs == 1 )  THEN    ! workaround for single-core GPU runs
593                   on_device = .FALSE.        ! to be removed after complete porting
594                ELSE                          ! of ghost point exchange
595                   !$acc update device( e_p, pt_p, u_p, v_p, w_p )
596                ENDIF
597
598                sendrecv_in_background = .FALSE.
599
600                CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
601
602             ENDIF
603
604!             i_left  = nxl+nbgp;    i_right = nxr-nbgp
605!             j_south = nys+nbgp;    j_north = nyn-nbgp
606!             CALL prognostic_equations_acc
607
608             IF ( background_communication )  THEN
609                CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'continue' )
610#if defined( __parallel )
611                CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
612#endif
613                send_receive = 'al'
614                CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'stop' )
615             ENDIF
616
617          ENDIF
618
619!
620!--       Particle transport/physics with the Lagrangian particle model
621!--       (only once during intermediate steps, because it uses an Euler-step)
622!--       ### particle model should be moved before prognostic_equations, in order
623!--       to regard droplet interactions directly
624          IF ( particle_advection  .AND.                         &
625               simulated_time >= particle_advection_start  .AND. &
626               intermediate_timestep_count == 1 )  THEN
627             CALL lpm
628             first_call_lpm = .FALSE.
629          ENDIF
630
631!
632!--       Interaction of droplets with temperature and specific humidity.
633!--       Droplet condensation and evaporation is calculated within
634!--       advec_particles.
635          IF ( cloud_droplets  .AND.  &
636               intermediate_timestep_count == intermediate_timestep_count_max )&
637          THEN
638             CALL interaction_droplets_ptq
639          ENDIF
640
641!
642!--       Exchange of ghost points (lateral boundary conditions)
643          IF ( .NOT. background_communication )  THEN
644
645             CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
646
647             IF ( numprocs == 1 )  THEN    ! workaround for single-core GPU runs
648                on_device = .TRUE.         ! to be removed after complete porting
649             ELSE                          ! of ghost point exchange
650                !$acc update host( e_p, pt_p, u_p, v_p, w_p )
651             ENDIF
652
653             CALL exchange_horiz( u_p, nbgp )
654             CALL exchange_horiz( v_p, nbgp )
655             CALL exchange_horiz( w_p, nbgp )
656             CALL exchange_horiz( pt_p, nbgp )
657             IF ( .NOT. constant_diffusion )  CALL exchange_horiz( e_p, nbgp )
658             IF ( ocean )  THEN
659                CALL exchange_horiz( sa_p, nbgp )
660                CALL exchange_horiz( rho, nbgp )
661                CALL exchange_horiz( prho, nbgp )
662             ENDIF
663             IF (humidity  .OR.  passive_scalar)  THEN
664                CALL exchange_horiz( q_p, nbgp )
665                IF ( cloud_physics .AND. microphysics_seifert )  THEN
666                   CALL exchange_horiz( qr_p, nbgp )
667                   CALL exchange_horiz( nr_p, nbgp )
668                ENDIF
669             ENDIF
670             IF ( cloud_droplets )  THEN
671                CALL exchange_horiz( ql, nbgp )
672                CALL exchange_horiz( ql_c, nbgp )
673                CALL exchange_horiz( ql_v, nbgp )
674                CALL exchange_horiz( ql_vp, nbgp )
675             ENDIF
676             IF ( wang_kernel  .OR.  collision_turbulence  .OR.                &
677                  use_sgs_for_particles )  THEN
678                CALL exchange_horiz( diss, nbgp )
679             ENDIF
680
681             IF ( numprocs == 1 )  THEN    ! workaround for single-core GPU runs
682                on_device = .FALSE.        ! to be removed after complete porting
683             ELSE                          ! of ghost point exchange
684                !$acc update device( e_p, pt_p, u_p, v_p, w_p )
685             ENDIF
686
687             CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
688
689          ENDIF
690
691!
692!--       Boundary conditions for the prognostic quantities (except of the
693!--       velocities at the outflow in case of a non-cyclic lateral wall)
694          CALL boundary_conds
695
696!
697!--       Swap the time levels in preparation for the next time step.
698          CALL swap_timelevel
699
700          IF ( nested_run )  THEN
701
702             CALL cpu_log( log_point(60), 'nesting', 'start' )
703!
704!--          Domain nesting. The data transfer subroutines pmci_server_datatrans
705!--          and pmci_client_datatatrans are called inside the wrapper
706!--          subroutine pmci_datatrans according to the control parameters
707!--          nesting_mode and nesting_datatransfer_mode.
708!--          TO_DO: why is nesting_mode given as a parameter here?
709             CALL pmci_datatrans( nesting_mode )
710
711             IF ( nesting_mode == 'two-way' )  THEN
712!
713!--             Exchange_horiz is needed for all server-domains after the
714!--             anterpolation
715                CALL exchange_horiz( u, nbgp )
716                CALL exchange_horiz( v, nbgp )
717                CALL exchange_horiz( w, nbgp )
718                CALL exchange_horiz( pt, nbgp )
719                IF ( humidity  .OR.  passive_scalar )  THEN
720                   CALL exchange_horiz( q, nbgp )
721                ENDIF
722                IF ( .NOT. constant_diffusion )  CALL exchange_horiz( e, nbgp )
723             ENDIF
724!
725!--          Correct the w top-BC in nest domains to ensure mass conservation.
726!--          This action must never be done for the root domain.
727             IF ( nest_domain )  THEN
728                CALL pmci_ensure_nest_mass_conservation
729             ENDIF
730
731             CALL cpu_log( log_point(60), 'nesting', 'stop' )
732
733          ENDIF
734
735!
736!--       Temperature offset must be imposed at cyclic boundaries in x-direction
737!--       when a sloping surface is used
738          IF ( sloping_surface )  THEN
739             IF ( nxl ==  0 )  pt(:,:,nxlg:nxl-1) = pt(:,:,nxlg:nxl-1) - &
740                                                    pt_slope_offset
741             IF ( nxr == nx )  pt(:,:,nxr+1:nxrg) = pt(:,:,nxr+1:nxrg) + &
742                                                    pt_slope_offset
743          ENDIF
744
745!
746!--       Impose a turbulent inflow using the recycling method
747          IF ( turbulent_inflow )  CALL  inflow_turbulence
748
749!
750!--       Impose a random perturbation on the horizontal velocity field
751          IF ( create_disturbances  .AND.                                      &
752               ( call_psolver_at_all_substeps  .AND.                           &
753               intermediate_timestep_count == intermediate_timestep_count_max )&
754          .OR. ( .NOT. call_psolver_at_all_substeps  .AND.                     &
755               intermediate_timestep_count == 1 ) )                            &
756          THEN
757             time_disturb = time_disturb + dt_3d
758             IF ( time_disturb >= dt_disturb )  THEN
759                !$acc update host( u, v )
760                IF ( numprocs == 1 )  on_device = .FALSE.  ! workaround, remove later
761                IF ( disturbance_energy_limit /= 0.0_wp  .AND.                 &
762                     hom(nzb+5,1,pr_palm,0) < disturbance_energy_limit )  THEN
763                   CALL disturb_field( nzb_u_inner, tend, u )
764                   CALL disturb_field( nzb_v_inner, tend, v )
765                ELSEIF ( .NOT. bc_lr_cyc  .OR.  .NOT. bc_ns_cyc )  THEN
766!
767!--                Runs with a non-cyclic lateral wall need perturbations
768!--                near the inflow throughout the whole simulation
769                   dist_range = 1
770                   CALL disturb_field( nzb_u_inner, tend, u )
771                   CALL disturb_field( nzb_v_inner, tend, v )
772                   dist_range = 0
773                ENDIF
774                IF ( numprocs == 1 )  on_device = .TRUE.  ! workaround, remove later
775                !$acc update device( u, v )
776                time_disturb = time_disturb - dt_disturb
777             ENDIF
778          ENDIF
779
780!
781!--       Reduce the velocity divergence via the equation for perturbation
782!--       pressure.
783          IF ( intermediate_timestep_count == 1  .OR. &
784                call_psolver_at_all_substeps )  THEN
785             CALL pres
786          ENDIF
787
788!
789!--       If required, compute liquid water content
790          IF ( cloud_physics )  THEN
791             CALL calc_liquid_water_content
792             !$acc update device( ql )
793          ENDIF
794!
795!--       If required, compute virtual potential temperature
796          IF ( humidity )  THEN
797             CALL compute_vpt
798             !$acc update device( vpt )
799          ENDIF
800
801!
802!--       Compute the diffusion quantities
803          IF ( .NOT. constant_diffusion )  THEN
804
805!
806!--          Determine surface fluxes shf and qsws and surface values
807!--          pt_surface and q_surface in dependence on data from external
808!--          file LSF_DATA respectively
809             IF ( ( large_scale_forcing .AND. lsf_surf ) .AND. &
810                 intermediate_timestep_count == intermediate_timestep_count_max )&
811             THEN
812                CALL ls_forcing_surf ( simulated_time )
813             ENDIF
814
815!
816!--          First the vertical fluxes in the surface (constant flux) layer are computed
817             IF ( constant_flux_layer )  THEN
818                CALL cpu_log( log_point(19), 'surface_layer_fluxes', 'start' )
819                CALL surface_layer_fluxes
820                CALL cpu_log( log_point(19), 'surface_layer_fluxes', 'stop' )
821             ENDIF
822
823!
824!--          If required, solve the energy balance for the surface and run soil
825!--          model
826             IF ( land_surface .AND. simulated_time > skip_time_do_lsm)  THEN
827
828                CALL cpu_log( log_point(54), 'land_surface', 'start' )
829                CALL lsm_energy_balance
830                CALL lsm_soil_model
831                CALL cpu_log( log_point(54), 'land_surface', 'stop' )
832             ENDIF
833!
834!--          Compute the diffusion coefficients
835             CALL cpu_log( log_point(17), 'diffusivities', 'start' )
836             IF ( .NOT. humidity ) THEN
837                IF ( ocean )  THEN
838                   CALL diffusivities( prho, prho_reference )
839                ELSE
840                   CALL diffusivities( pt, pt_reference )
841                ENDIF
842             ELSE
843                CALL diffusivities( vpt, pt_reference )
844             ENDIF
845             CALL cpu_log( log_point(17), 'diffusivities', 'stop' )
846
847          ENDIF
848
849!
850!--       If required, calculate radiative fluxes and heating rates
851          IF ( radiation .AND. intermediate_timestep_count                     &
852               == intermediate_timestep_count_max .AND. simulated_time >    &
853               skip_time_do_radiation )  THEN
854
855               time_radiation = time_radiation + dt_3d
856
857             IF ( time_radiation >= dt_radiation .OR. force_radiation_call )   &
858             THEN
859
860                CALL cpu_log( log_point(50), 'radiation', 'start' )
861
862                IF ( .NOT. force_radiation_call )  THEN
863                   time_radiation = time_radiation - dt_radiation
864                ENDIF
865
866                IF ( radiation_scheme == 'clear-sky' )  THEN
867                   CALL radiation_clearsky
868                ELSEIF ( radiation_scheme == 'rrtmg' )  THEN
869                   CALL radiation_rrtmg
870                ELSE
871                   CALL radiation_constant
872                ENDIF
873
874                CALL cpu_log( log_point(50), 'radiation', 'stop' )
875             ENDIF
876          ENDIF
877
878       ENDDO   ! Intermediate step loop
879
880!
881!--    Increase simulation time and output times
882       nr_timesteps_this_run      = nr_timesteps_this_run + 1
883       current_timestep_number    = current_timestep_number + 1
884       simulated_time             = simulated_time   + dt_3d
885       simulated_time_chr         = time_to_string( simulated_time )
886       time_since_reference_point = simulated_time - coupling_start_time
887
888       IF ( simulated_time >= skip_time_data_output_av )  THEN
889          time_do_av         = time_do_av       + dt_3d
890       ENDIF
891       IF ( simulated_time >= skip_time_do2d_xy )  THEN
892          time_do2d_xy       = time_do2d_xy     + dt_3d
893       ENDIF
894       IF ( simulated_time >= skip_time_do2d_xz )  THEN
895          time_do2d_xz       = time_do2d_xz     + dt_3d
896       ENDIF
897       IF ( simulated_time >= skip_time_do2d_yz )  THEN
898          time_do2d_yz       = time_do2d_yz     + dt_3d
899       ENDIF
900       IF ( simulated_time >= skip_time_do3d    )  THEN
901          time_do3d          = time_do3d        + dt_3d
902       ENDIF
903       DO  mid = 1, masks
904          IF ( simulated_time >= skip_time_domask(mid) )  THEN
905             time_domask(mid)= time_domask(mid) + dt_3d
906          ENDIF
907       ENDDO
908       time_dvrp          = time_dvrp        + dt_3d
909       IF ( simulated_time >= skip_time_dosp )  THEN
910          time_dosp       = time_dosp        + dt_3d
911       ENDIF
912       time_dots          = time_dots        + dt_3d
913       IF ( .NOT. first_call_lpm )  THEN
914          time_dopts      = time_dopts       + dt_3d
915       ENDIF
916       IF ( simulated_time >= skip_time_dopr )  THEN
917          time_dopr       = time_dopr        + dt_3d
918       ENDIF
919       time_dopr_listing          = time_dopr_listing        + dt_3d
920       time_run_control   = time_run_control + dt_3d
921
922!
923!--    Data exchange between coupled models
924       IF ( coupling_mode /= 'uncoupled'  .AND.  run_coupled )  THEN
925          time_coupling = time_coupling + dt_3d
926
927!
928!--       In case of model termination initiated by the local model
929!--       (terminate_coupled > 0), the coupler must be skipped because it would
930!--       cause an MPI intercomminucation hang.
931!--       If necessary, the coupler will be called at the beginning of the
932!--       next restart run.
933          DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
934             CALL surface_coupler
935             time_coupling = time_coupling - dt_coupling
936          ENDDO
937       ENDIF
938
939!
940!--    Execute user-defined actions
941       CALL user_actions( 'after_integration' )
942
943!
944!--    If Galilei transformation is used, determine the distance that the
945!--    model has moved so far
946       IF ( galilei_transformation )  THEN
947          advected_distance_x = advected_distance_x + u_gtrans * dt_3d
948          advected_distance_y = advected_distance_y + v_gtrans * dt_3d
949       ENDIF
950
951!
952!--    Check, if restart is necessary (because cpu-time is expiring or
953!--    because it is forced by user) and set stop flag
954!--    This call is skipped if the remote model has already initiated a restart.
955       IF ( .NOT. terminate_run )  CALL check_for_restart
956
957!
958!--    Carry out statistical analysis and output at the requested output times.
959!--    The MOD function is used for calculating the output time counters (like
960!--    time_dopr) in order to regard a possible decrease of the output time
961!--    interval in case of restart runs
962
963!
964!--    Set a flag indicating that so far no statistics have been created
965!--    for this time step
966       flow_statistics_called = .FALSE.
967
968!
969!--    If required, call flow_statistics for averaging in time
970       IF ( averaging_interval_pr /= 0.0_wp  .AND.  &
971            ( dt_dopr - time_dopr ) <= averaging_interval_pr  .AND.  &
972            simulated_time >= skip_time_dopr )  THEN
973          time_dopr_av = time_dopr_av + dt_3d
974          IF ( time_dopr_av >= dt_averaging_input_pr )  THEN
975             do_sum = .TRUE.
976             time_dopr_av = MOD( time_dopr_av, &
977                                    MAX( dt_averaging_input_pr, dt_3d ) )
978          ENDIF
979       ENDIF
980       IF ( do_sum )  CALL flow_statistics
981
982!
983!--    Sum-up 3d-arrays for later output of time-averaged 2d/3d/masked data
984       IF ( averaging_interval /= 0.0_wp  .AND.                                &
985            ( dt_data_output_av - time_do_av ) <= averaging_interval  .AND. &
986            simulated_time >= skip_time_data_output_av )                    &
987       THEN
988          time_do_sla = time_do_sla + dt_3d
989          IF ( time_do_sla >= dt_averaging_input )  THEN
990             CALL sum_up_3d_data
991             average_count_3d = average_count_3d + 1
992             time_do_sla = MOD( time_do_sla, MAX( dt_averaging_input, dt_3d ) )
993          ENDIF
994       ENDIF
995
996!
997!--    Calculate spectra for time averaging
998       IF ( averaging_interval_sp /= 0.0_wp  .AND.  &
999            ( dt_dosp - time_dosp ) <= averaging_interval_sp  .AND.  &
1000            simulated_time >= skip_time_dosp )  THEN
1001          time_dosp_av = time_dosp_av + dt_3d
1002          IF ( time_dosp_av >= dt_averaging_input_pr )  THEN
1003             CALL calc_spectra
1004             time_dosp_av = MOD( time_dosp_av, &
1005                                 MAX( dt_averaging_input_pr, dt_3d ) )
1006          ENDIF
1007       ENDIF
1008
1009!
1010!--    Computation and output of run control parameters.
1011!--    This is also done whenever perturbations have been imposed
1012       IF ( time_run_control >= dt_run_control  .OR.                     &
1013            timestep_scheme(1:5) /= 'runge'  .OR.  disturbance_created ) &
1014       THEN
1015          CALL run_control
1016          IF ( time_run_control >= dt_run_control )  THEN
1017             time_run_control = MOD( time_run_control, &
1018                                     MAX( dt_run_control, dt_3d ) )
1019          ENDIF
1020       ENDIF
1021
1022!
1023!--    Profile output (ASCII) on file
1024       IF ( time_dopr_listing >= dt_dopr_listing )  THEN
1025          CALL print_1d
1026          time_dopr_listing = MOD( time_dopr_listing, MAX( dt_dopr_listing, &
1027                                                           dt_3d ) )
1028       ENDIF
1029
1030!
1031!--    Graphic output for PROFIL
1032       IF ( time_dopr >= dt_dopr )  THEN
1033          IF ( dopr_n /= 0 )  CALL data_output_profiles
1034          time_dopr = MOD( time_dopr, MAX( dt_dopr, dt_3d ) )
1035          time_dopr_av = 0.0_wp    ! due to averaging (see above)
1036       ENDIF
1037
1038!
1039!--    Graphic output for time series
1040       IF ( time_dots >= dt_dots )  THEN
1041          CALL data_output_tseries
1042          time_dots = MOD( time_dots, MAX( dt_dots, dt_3d ) )
1043       ENDIF
1044
1045!
1046!--    Output of spectra (formatted for use with PROFIL), in case of no
1047!--    time averaging, spectra has to be calculated before
1048       IF ( time_dosp >= dt_dosp )  THEN
1049          IF ( average_count_sp == 0 )  CALL calc_spectra
1050          CALL data_output_spectra
1051          time_dosp = MOD( time_dosp, MAX( dt_dosp, dt_3d ) )
1052       ENDIF
1053
1054!
1055!--    2d-data output (cross-sections)
1056       IF ( time_do2d_xy >= dt_do2d_xy )  THEN
1057          CALL data_output_2d( 'xy', 0 )
1058          time_do2d_xy = MOD( time_do2d_xy, MAX( dt_do2d_xy, dt_3d ) )
1059       ENDIF
1060       IF ( time_do2d_xz >= dt_do2d_xz )  THEN
1061          CALL data_output_2d( 'xz', 0 )
1062          time_do2d_xz = MOD( time_do2d_xz, MAX( dt_do2d_xz, dt_3d ) )
1063       ENDIF
1064       IF ( time_do2d_yz >= dt_do2d_yz )  THEN
1065          CALL data_output_2d( 'yz', 0 )
1066          time_do2d_yz = MOD( time_do2d_yz, MAX( dt_do2d_yz, dt_3d ) )
1067       ENDIF
1068
1069!
1070!--    3d-data output (volume data)
1071       IF ( time_do3d >= dt_do3d )  THEN
1072          CALL data_output_3d( 0 )
1073          time_do3d = MOD( time_do3d, MAX( dt_do3d, dt_3d ) )
1074       ENDIF
1075
1076!
1077!--    Masked data output
1078       DO  mid = 1, masks
1079          IF ( time_domask(mid) >= dt_domask(mid) )  THEN
1080             CALL data_output_mask( 0 )
1081             time_domask(mid) = MOD( time_domask(mid),  &
1082                                     MAX( dt_domask(mid), dt_3d ) )
1083          ENDIF
1084       ENDDO
1085
1086!
1087!--    Output of time-averaged 2d/3d/masked data
1088       IF ( time_do_av >= dt_data_output_av )  THEN
1089          CALL average_3d_data
1090          CALL data_output_2d( 'xy', 1 )
1091          CALL data_output_2d( 'xz', 1 )
1092          CALL data_output_2d( 'yz', 1 )
1093          CALL data_output_3d( 1 )
1094          DO  mid = 1, masks
1095             CALL data_output_mask( 1 )
1096          ENDDO
1097          time_do_av = MOD( time_do_av, MAX( dt_data_output_av, dt_3d ) )
1098       ENDIF
1099
1100!
1101!--    Output of particle time series
1102       IF ( particle_advection )  THEN
1103          IF ( time_dopts >= dt_dopts  .OR. &
1104               ( simulated_time >= particle_advection_start  .AND. &
1105                 first_call_lpm ) )  THEN
1106             CALL data_output_ptseries
1107             time_dopts = MOD( time_dopts, MAX( dt_dopts, dt_3d ) )
1108          ENDIF
1109       ENDIF
1110
1111!
1112!--    Output of dvrp-graphics (isosurface, particles, slicer)
1113#if defined( __dvrp_graphics )
1114       CALL DVRP_LOG_EVENT( -2, current_timestep_number-1 )
1115#endif
1116       IF ( time_dvrp >= dt_dvrp )  THEN
1117          CALL data_output_dvrp
1118          time_dvrp = MOD( time_dvrp, MAX( dt_dvrp, dt_3d ) )
1119       ENDIF
1120#if defined( __dvrp_graphics )
1121       CALL DVRP_LOG_EVENT( 2, current_timestep_number )
1122#endif
1123
1124!
1125!--    If required, set the heat flux for the next time step at a random value
1126       IF ( constant_heatflux  .AND.  random_heatflux )  CALL disturb_heatflux
1127
1128!
1129!--    Execute user-defined actions
1130       CALL user_actions( 'after_timestep' )
1131
1132!
1133!--    Output elapsed simulated time in form of a progress bar on stdout
1134       IF ( myid == 0 )  CALL output_progress_bar
1135
1136       CALL cpu_log( log_point_s(10), 'timesteps', 'stop' )
1137
1138
1139    ENDDO   ! time loop
1140
1141    IF ( myid == 0 )  CALL finish_progress_bar
1142
1143#if defined( __dvrp_graphics )
1144    CALL DVRP_LOG_EVENT( -2, current_timestep_number )
1145#endif
1146
1147    CALL location_message( 'finished time-stepping', .TRUE. )
1148
1149 END SUBROUTINE time_integration
Note: See TracBrowser for help on using the repository browser.