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source: palm/trunk/SOURCE/time_integration.f90 @ 1383

Last change on this file since 1383 was 1381, checked in by heinze, 11 years ago
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[1]	1	SUBROUTINE time_integration
	2
[1036]	3	!--------------------------------------------------------------------------------!
	4	! This file is part of PALM.
	5	!
	6	! PALM is free software: you can redistribute it and/or modify it under the terms
	7	! of the GNU General Public License as published by the Free Software Foundation,
	8	! either version 3 of the License, or (at your option) any later version.
	9	!
	10	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
	11	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
	12	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
	13	!
	14	! You should have received a copy of the GNU General Public License along with
	15	! PALM. If not, see <http://www.gnu.org/licenses/>.
	16	!
[1310]	17	! Copyright 1997-2014 Leibniz Universitaet Hannover
[1036]	18	!--------------------------------------------------------------------------------!
	19	!
[484]	20	! Current revisions:
[1092]	21	! ------------------
[1366]	22	!
[1381]	23	!
[1366]	24	! Former revisions:
	25	! -----------------
	26	! $Id: time_integration.f90 1381 2014-04-28 12:41:59Z boeske $
	27	!
[1381]	28	! 1380 2014-04-28 12:40:45Z heinze
	29	! CALL of nudge_ref added
	30	! bc_pt_t_val and bc_q_t_val are updated in case nudging is used
	31	!
[1366]	32	! 1365 2014-04-22 15:03:56Z boeske
[1365]	33	! Reset sums_ls_l to zero at each timestep
	34	! +sums_ls_l
	35	! Calculation of reference state (previously in subroutine calc_mean_profile)
	36
[1343]	37	! 1342 2014-03-26 17:04:47Z kanani
	38	! REAL constants defined as wp-kind
	39	!
[1321]	40	! 1320 2014-03-20 08:40:49Z raasch
[1320]	41	! ONLY-attribute added to USE-statements,
	42	! kind-parameters added to all INTEGER and REAL declaration statements,
	43	! kinds are defined in new module kinds,
	44	! old module precision_kind is removed,
	45	! revision history before 2012 removed,
	46	! comment fields (!:) to be used for variable explanations added to
	47	! all variable declaration statements
[1319]	48	! 1318 2014-03-17 13:35:16Z raasch
	49	! module interfaces removed
	50	!
[1309]	51	! 1308 2014-03-13 14:58:42Z fricke
	52	! +netcdf_data_format_save
	53	! For masked data, parallel netcdf output is not tested so far, hence
	54	! netcdf_data_format is switched back to non-paralell output.
	55	!
[1277]	56	! 1276 2014-01-15 13:40:41Z heinze
	57	! Use LSF_DATA also in case of Dirichlet bottom boundary condition for scalars
	58	!
[1258]	59	! 1257 2013-11-08 15:18:40Z raasch
	60	! acc-update-host directive for timestep removed
	61	!
[1242]	62	! 1241 2013-10-30 11:36:58Z heinze
	63	! Generalize calc_mean_profile for wider use
	64	! Determine shf and qsws in dependence on data from LSF_DATA
	65	! Determine ug and vg in dependence on data from LSF_DATA
[1222]	66	! 1221 2013-09-10 08:59:13Z raasch
	67	! host update of arrays before timestep is called
	68	!
[1182]	69	! 1179 2013-06-14 05:57:58Z raasch
	70	! mean profiles for reference state are only calculated if required,
	71	! small bugfix for background communication
	72	!
[1172]	73	! 1171 2013-05-30 11:27:45Z raasch
	74	! split of prognostic_equations deactivated (comment lines), for the time being
	75	!
[1132]	76	! 1128 2013-04-12 06:19:32Z raasch
[1128]	77	! asynchronous transfer of ghost point data realized for acc-optimized version:
	78	! prognostic_equations are first called two times for those points required for
	79	! the left-right and north-south exchange, respectively, and then for the
	80	! remaining points,
	81	! those parts requiring global communication moved from prognostic_equations to
	82	! here
[392]	83	!
[1116]	84	! 1115 2013-03-26 18:16:16Z hoffmann
	85	! calculation of qr and nr is restricted to precipitation
	86	!
[1114]	87	! 1113 2013-03-10 02:48:14Z raasch
	88	! GPU-porting of boundary conditions,
	89	! openACC directives updated
	90	! formal parameter removed from routine boundary_conds
	91	!
[1112]	92	! 1111 2013-03-08 23:54:10Z raasch
	93	! +internal timestep counter for cpu statistics added,
	94	! openACC directives updated
	95	!
[1093]	96	! 1092 2013-02-02 11:24:22Z raasch
	97	! unused variables removed
	98	!
[1066]	99	! 1065 2012-11-22 17:42:36Z hoffmann
	100	! exchange of diss (dissipation rate) in case of turbulence = .TRUE. added
	101	!
[1054]	102	! 1053 2012-11-13 17:11:03Z hoffmann
	103	! exchange of ghost points for nr, qr added
	104	!
[1037]	105	! 1036 2012-10-22 13:43:42Z raasch
	106	! code put under GPL (PALM 3.9)
	107	!
[1020]	108	! 1019 2012-09-28 06:46:45Z raasch
	109	! non-optimized version of prognostic_equations removed
	110	!
[1017]	111	! 1015 2012-09-27 09:23:24Z raasch
	112	! +call of prognostic_equations_acc
	113	!
[1002]	114	! 1001 2012-09-13 14:08:46Z raasch
	115	! all actions concerning leapfrog- and upstream-spline-scheme removed
	116	!
[850]	117	! 849 2012-03-15 10:35:09Z raasch
	118	! advec_particles renamed lpm, first_call_advec_particles renamed first_call_lpm
	119	!
[826]	120	! 825 2012-02-19 03:03:44Z raasch
	121	! wang_collision_kernel renamed wang_kernel
	122	!
[1]	123	! Revision 1.1 1997/08/11 06:19:04 raasch
	124	! Initial revision
	125	!
	126	!
	127	! Description:
	128	! ------------
	129	! Integration in time of the model equations, statistical analysis and graphic
	130	! output
	131	!------------------------------------------------------------------------------!
	132
[1320]	133	USE advec_ws, &
	134	ONLY: ws_statistics
	135
	136	USE arrays_3d, &
[1380]	137	ONLY: diss, dzu, e_p, nr_p, prho, pt, pt_p, pt_init, q_init, q, ql, &
	138	ql_c, ql_v, ql_vp, qr_p, q_p, ref_state, rho, sa_p, tend, u, &
	139	u_p, v, vpt, v_p, w_p
[1320]	140
[1365]	141	USE calc_mean_profile_mod, &
[1320]	142	ONLY: calc_mean_profile
	143
	144	USE control_parameters, &
	145	ONLY: advected_distance_x, advected_distance_y, average_count_3d, &
	146	average_count_sp, averaging_interval, averaging_interval_pr, &
[1380]	147	averaging_interval_sp, bc_lr_cyc, bc_ns_cyc, bc_pt_t_val, &
	148	bc_q_t_val, call_psolver_at_all_substeps, cloud_droplets, &
	149	cloud_physics, constant_heatflux, create_disturbances, dopr_n, &
[1320]	150	constant_diffusion, coupling_mode, coupling_start_time, &
	151	current_timestep_number, disturbance_created, &
	152	disturbance_energy_limit, dist_range, do_sum, dt_3d, &
	153	dt_averaging_input, dt_averaging_input_pr, dt_coupling, &
	154	dt_data_output_av, dt_disturb, dt_do2d_xy, dt_do2d_xz, &
	155	dt_do2d_yz, dt_do3d, dt_domask,dt_dopts, dt_dopr, &
	156	dt_dopr_listing, dt_dosp, dt_dots, dt_dvrp, dt_run_control, &
	157	end_time, first_call_lpm, galilei_transformation, humidity, &
	158	icloud_scheme, intermediate_timestep_count, &
	159	intermediate_timestep_count_max, large_scale_forcing, &
	160	loop_optimization, lsf_surf, lsf_vert, masks, mid, &
[1365]	161	netcdf_data_format, neutral, nr_timesteps_this_run, nudging, &
	162	ocean, on_device, passive_scalar, prandtl_layer, precipitation, &
[1320]	163	prho_reference, pt_reference, pt_slope_offset, random_heatflux, &
	164	run_coupled, simulated_time, simulated_time_chr, &
	165	skip_time_do2d_xy, skip_time_do2d_xz, skip_time_do2d_yz, &
	166	skip_time_do3d, skip_time_domask, skip_time_dopr, &
	167	skip_time_dosp, skip_time_data_output_av, sloping_surface, &
	168	stop_dt, terminate_coupled, terminate_run, timestep_scheme, &
	169	time_coupling, time_do2d_xy, time_do2d_xz, time_do2d_yz, &
	170	time_do3d, time_domask, time_dopr, time_dopr_av, &
	171	time_dopr_listing, time_dopts, time_dosp, time_dosp_av, &
	172	time_dots, time_do_av, time_do_sla, time_disturb, time_dvrp, &
	173	time_run_control, time_since_reference_point, turbulence, &
	174	turbulent_inflow, use_initial_profile_as_reference, &
	175	use_single_reference_value, u_gtrans, v_gtrans, ws_scheme_mom, &
	176	ws_scheme_sca
	177
	178	USE cpulog, &
	179	ONLY: cpu_log, log_point, log_point_s
	180
	181	USE indices, &
	182	ONLY: i_left, i_right, j_north, j_south, nbgp, nx, nxl, nxlg, nxr, &
[1380]	183	nxrg, nyn, nys, nzb, nzt, nzb_u_inner, nzb_v_inner
[1320]	184
	185	USE interaction_droplets_ptq_mod, &
	186	ONLY: interaction_droplets_ptq
	187
	188	USE kinds
	189
	190	USE ls_forcing_mod, &
	191	ONLY: ls_forcing_surf, ls_forcing_vert
	192
[1365]	193	USE nudge_mod, &
[1380]	194	ONLY: calc_tnudge, nudge_ref
[1365]	195
[1320]	196	USE particle_attributes, &
	197	ONLY: particle_advection, particle_advection_start, wang_kernel
	198
[1]	199	USE pegrid
	200
[1320]	201	USE production_e_mod, &
	202	ONLY: production_e_init
	203
	204	USE prognostic_equations_mod, &
	205	ONLY: prognostic_equations_acc, prognostic_equations_cache, &
	206	prognostic_equations_vector
	207
	208	USE statistics, &
[1365]	209	ONLY: flow_statistics_called, hom, pr_palm, sums_ls_l
[1320]	210
	211	USE user_actions_mod, &
	212	ONLY: user_actions
	213
[1]	214	IMPLICIT NONE
	215
[1320]	216	CHARACTER (LEN=9) :: time_to_string !:
[1]	217
[1320]	218	INTEGER(iwp) :: netcdf_data_format_save !:
	219
[1]	220	!
	221	!-- At the beginning of a simulation determine the time step as well as
	222	!-- determine and print out the run control parameters
[1342]	223	IF ( simulated_time == 0.0_wp ) CALL timestep
[667]	224
[1]	225	CALL run_control
	226
[667]	227
[108]	228	!
	229	!-- Data exchange between coupled models in case that a call has been omitted
	230	!-- at the end of the previous run of a job chain.
[291]	231	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
[108]	232	!
	233	!-- In case of model termination initiated by the local model the coupler
	234	!-- must not be called because this would again cause an MPI hang.
	235	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
	236	CALL surface_coupler
	237	time_coupling = time_coupling - dt_coupling
	238	ENDDO
[1342]	239	IF (time_coupling == 0.0_wp .AND. time_since_reference_point < dt_coupling)&
[348]	240	THEN
	241	time_coupling = time_since_reference_point
	242	ENDIF
[108]	243	ENDIF
	244
	245
[1]	246	#if defined( __dvrp_graphics )
	247	!
	248	!-- Time measurement with dvrp software
	249	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
	250	#endif
	251
	252	!
	253	!-- Start of the time loop
	254	DO WHILE ( simulated_time < end_time .AND. .NOT. stop_dt .AND. &
	255	.NOT. terminate_run )
	256
	257	CALL cpu_log( log_point_s(10), 'timesteps', 'start' )
[1221]	258
[1]	259	!
	260	!-- Determine size of next time step
[1342]	261	IF ( simulated_time /= 0.0_wp ) THEN
[1221]	262	CALL timestep
	263	ENDIF
	264
[1]	265	!
[1241]	266	!-- Determine ug, vg and w_subs in dependence on data from external file
	267	!-- LSF_DATA
[1365]	268	IF ( large_scale_forcing .AND. lsf_vert ) THEN
[1241]	269	CALL ls_forcing_vert ( simulated_time )
[1365]	270	sums_ls_l = 0.0_wp
[1241]	271	ENDIF
	272
	273	!
[1380]	274	!-- Set pt_init and q_init to the current profiles taken from
	275	!-- NUDGING_DATA
	276	IF ( nudging ) THEN
	277	CALL nudge_ref ( simulated_time )
	278	!
	279	!-- Store temperature gradient at the top boundary for possible Neumann
	280	!-- boundary condition
	281	bc_pt_t_val = ( pt_init(nzt+1) - pt_init(nzt) ) / dzu(nzt+1)
	282	bc_q_t_val = ( q_init(nzt+1) - q_init(nzt) ) / dzu(nzt+1)
	283	ENDIF
	284
	285	!
[1]	286	!-- Execute the user-defined actions
	287	CALL user_actions( 'before_timestep' )
	288
	289	!
	290	!-- Start of intermediate step loop
	291	intermediate_timestep_count = 0
	292	DO WHILE ( intermediate_timestep_count < &
	293	intermediate_timestep_count_max )
	294
	295	intermediate_timestep_count = intermediate_timestep_count + 1
	296
	297	!
	298	!-- Set the steering factors for the prognostic equations which depend
	299	!-- on the timestep scheme
	300	CALL timestep_scheme_steering
	301
	302	!
[1128]	303	!-- Calculate those variables needed in the tendency terms which need
	304	!-- global communication
[1179]	305	IF ( .NOT. use_single_reference_value .AND. &
	306	.NOT. use_initial_profile_as_reference ) THEN
	307	!
	308	!-- Horizontally averaged profiles to be used as reference state in
	309	!-- buoyancy terms (WARNING: only the respective last call of
	310	!-- calc_mean_profile defines the reference state!)
[1365]	311	IF ( .NOT. neutral ) THEN
	312	CALL calc_mean_profile( pt, 4 )
	313	ref_state(:) = hom(:,1,4,0) ! this is used in the buoyancy term
	314	ENDIF
	315	IF ( ocean ) THEN
	316	CALL calc_mean_profile( rho, 64 )
	317	ref_state(:) = hom(:,1,64,0)
	318	ENDIF
	319	IF ( humidity ) THEN
	320	CALL calc_mean_profile( vpt, 44 )
	321	ref_state(:) = hom(:,1,44,0)
	322	ENDIF
	323
[1179]	324	ENDIF
	325
[1128]	326	IF ( .NOT. constant_diffusion ) CALL production_e_init
	327	IF ( ( ws_scheme_mom .OR. ws_scheme_sca ) .AND. &
	328	intermediate_timestep_count == 1 ) CALL ws_statistics
[1365]	329	!
	330	!-- In case of nudging calculate current nudging time scale and horizontal
[1380]	331	!-- means of u, v, pt and q
[1365]	332	IF ( nudging ) THEN
	333	CALL calc_tnudge( simulated_time )
	334	CALL calc_mean_profile( u, 1 )
	335	CALL calc_mean_profile( v, 2 )
	336	CALL calc_mean_profile( pt, 4 )
	337	CALL calc_mean_profile( q, 41 )
	338	ENDIF
[1128]	339
	340	!
[1]	341	!-- Solve the prognostic equations. A fast cache optimized version with
	342	!-- only one single loop is used in case of Piascek-Williams advection
	343	!-- scheme. NEC vector machines use a different version, because
	344	!-- in the other versions a good vectorization is prohibited due to
	345	!-- inlining problems.
[1019]	346	IF ( loop_optimization == 'cache' ) THEN
	347	CALL prognostic_equations_cache
	348	ELSEIF ( loop_optimization == 'vector' ) THEN
[63]	349	CALL prognostic_equations_vector
[1015]	350	ELSEIF ( loop_optimization == 'acc' ) THEN
[1171]	351	i_left = nxl; i_right = nxr
	352	j_south = nys; j_north = nyn
	353	CALL prognostic_equations_acc
	354
	355	! i_left = nxl; i_right = nxl+nbgp-1
[1128]	356	! j_south = nys; j_north = nyn
	357	! CALL prognostic_equations_acc
[1171]	358	! i_left = nxr-nbgp+1; i_right = nxr
	359	! j_south = nys; j_north = nyn
	360	! CALL prognostic_equations_acc
[1128]	361
	362	!
	363	!-- Exchange of ghost points (lateral boundary conditions)
	364	IF ( background_communication ) THEN
	365
	366	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
	367
	368	send_receive = 'lr'
	369	sendrecv_in_background = .TRUE.
	370	req = 0
	371	req_count = 0
	372
	373	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	374	on_device = .TRUE. ! to be removed after complete porting
	375	ELSE ! of ghost point exchange
	376	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
	377	ENDIF
	378
	379	CALL exchange_horiz( u_p, nbgp )
	380	CALL exchange_horiz( v_p, nbgp )
	381	CALL exchange_horiz( w_p, nbgp )
	382	CALL exchange_horiz( pt_p, nbgp )
	383	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	384	IF ( ocean ) THEN
	385	CALL exchange_horiz( sa_p, nbgp )
	386	CALL exchange_horiz( rho, nbgp )
	387	CALL exchange_horiz( prho, nbgp )
	388	ENDIF
	389	IF (humidity .OR. passive_scalar) THEN
	390	CALL exchange_horiz( q_p, nbgp )
	391	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
	392	CALL exchange_horiz( qr_p, nbgp )
	393	CALL exchange_horiz( nr_p, nbgp )
	394	ENDIF
	395	ENDIF
	396	IF ( cloud_droplets ) THEN
	397	CALL exchange_horiz( ql, nbgp )
	398	CALL exchange_horiz( ql_c, nbgp )
	399	CALL exchange_horiz( ql_v, nbgp )
	400	CALL exchange_horiz( ql_vp, nbgp )
	401	ENDIF
	402	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
	403
	404	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	405	on_device = .FALSE. ! to be removed after complete porting
	406	ELSE ! of ghost point exchange
	407	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	408	ENDIF
	409
	410	sendrecv_in_background = .FALSE.
	411
	412	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'pause' )
	413
	414	ENDIF
	415
[1171]	416	! i_left = nxl+nbgp; i_right = nxr-nbgp
	417	! j_south = nys; j_north = nys+nbgp-1
	418	! CALL prognostic_equations_acc
	419	! i_left = nxl+nbgp; i_right = nxr-nbgp
	420	! j_south = nyn-nbgp+1; j_north = nyn
	421	! CALL prognostic_equations_acc
[1128]	422
	423	IF ( background_communication ) THEN
	424	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'start' )
	425	#if defined( __parallel )
	426	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
	427	#endif
	428	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'pause' )
	429
	430	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'continue' )
	431
	432	send_receive = 'ns'
	433	sendrecv_in_background = .TRUE.
	434	req = 0
	435	req_count = 0
	436
	437	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	438	on_device = .TRUE. ! to be removed after complete porting
	439	ELSE ! of ghost point exchange
	440	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
	441	ENDIF
	442
	443	CALL exchange_horiz( u_p, nbgp )
	444	CALL exchange_horiz( v_p, nbgp )
	445	CALL exchange_horiz( w_p, nbgp )
	446	CALL exchange_horiz( pt_p, nbgp )
	447	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	448	IF ( ocean ) THEN
	449	CALL exchange_horiz( sa_p, nbgp )
	450	CALL exchange_horiz( rho, nbgp )
	451	CALL exchange_horiz( prho, nbgp )
	452	ENDIF
	453	IF (humidity .OR. passive_scalar) THEN
	454	CALL exchange_horiz( q_p, nbgp )
	455	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
	456	CALL exchange_horiz( qr_p, nbgp )
	457	CALL exchange_horiz( nr_p, nbgp )
	458	ENDIF
	459	ENDIF
	460	IF ( cloud_droplets ) THEN
	461	CALL exchange_horiz( ql, nbgp )
	462	CALL exchange_horiz( ql_c, nbgp )
	463	CALL exchange_horiz( ql_v, nbgp )
	464	CALL exchange_horiz( ql_vp, nbgp )
	465	ENDIF
	466	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
	467
	468	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	469	on_device = .FALSE. ! to be removed after complete porting
	470	ELSE ! of ghost point exchange
	471	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	472	ENDIF
	473
	474	sendrecv_in_background = .FALSE.
	475
	476	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
	477
	478	ENDIF
	479
[1171]	480	! i_left = nxl+nbgp; i_right = nxr-nbgp
	481	! j_south = nys+nbgp; j_north = nyn-nbgp
	482	! CALL prognostic_equations_acc
[1128]	483
	484	IF ( background_communication ) THEN
	485	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'continue' )
	486	#if defined( __parallel )
	487	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
	488	#endif
	489	send_receive = 'al'
	490	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'stop' )
	491	ENDIF
	492
[1]	493	ENDIF
	494
	495	!
[849]	496	!-- Particle transport/physics with the Lagrangian particle model
	497	!-- (only once during intermediate steps, because it uses an Euler-step)
[1128]	498	!-- ### particle model should be moved before prognostic_equations, in order
	499	!-- to regard droplet interactions directly
[63]	500	IF ( particle_advection .AND. &
	501	simulated_time >= particle_advection_start .AND. &
[1]	502	intermediate_timestep_count == 1 ) THEN
[849]	503	CALL lpm
	504	first_call_lpm = .FALSE.
[1]	505	ENDIF
	506
	507	!
	508	!-- Interaction of droplets with temperature and specific humidity.
	509	!-- Droplet condensation and evaporation is calculated within
	510	!-- advec_particles.
	511	IF ( cloud_droplets .AND. &
	512	intermediate_timestep_count == intermediate_timestep_count_max )&
	513	THEN
	514	CALL interaction_droplets_ptq
	515	ENDIF
	516
	517	!
	518	!-- Exchange of ghost points (lateral boundary conditions)
[1128]	519	IF ( .NOT. background_communication ) THEN
[1113]	520
[1128]	521	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
[1113]	522
[1128]	523	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	524	on_device = .TRUE. ! to be removed after complete porting
	525	ELSE ! of ghost point exchange
	526	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
[1053]	527	ENDIF
[1]	528
[1128]	529	CALL exchange_horiz( u_p, nbgp )
	530	CALL exchange_horiz( v_p, nbgp )
	531	CALL exchange_horiz( w_p, nbgp )
	532	CALL exchange_horiz( pt_p, nbgp )
	533	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	534	IF ( ocean ) THEN
	535	CALL exchange_horiz( sa_p, nbgp )
	536	CALL exchange_horiz( rho, nbgp )
	537	CALL exchange_horiz( prho, nbgp )
	538	ENDIF
	539	IF (humidity .OR. passive_scalar) THEN
	540	CALL exchange_horiz( q_p, nbgp )
[1179]	541	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
	542	precipitation ) THEN
[1128]	543	CALL exchange_horiz( qr_p, nbgp )
	544	CALL exchange_horiz( nr_p, nbgp )
	545	ENDIF
	546	ENDIF
	547	IF ( cloud_droplets ) THEN
	548	CALL exchange_horiz( ql, nbgp )
	549	CALL exchange_horiz( ql_c, nbgp )
	550	CALL exchange_horiz( ql_v, nbgp )
	551	CALL exchange_horiz( ql_vp, nbgp )
	552	ENDIF
	553	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
	554
	555	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	556	on_device = .FALSE. ! to be removed after complete porting
	557	ELSE ! of ghost point exchange
	558	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	559	ENDIF
	560
	561	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
	562
[1113]	563	ENDIF
	564
[1]	565	!
	566	!-- Boundary conditions for the prognostic quantities (except of the
	567	!-- velocities at the outflow in case of a non-cyclic lateral wall)
[1113]	568	CALL boundary_conds
[1]	569
	570	!
[73]	571	!-- Swap the time levels in preparation for the next time step.
	572	CALL swap_timelevel
	573
	574	!
[1]	575	!-- Temperature offset must be imposed at cyclic boundaries in x-direction
	576	!-- when a sloping surface is used
	577	IF ( sloping_surface ) THEN
[707]	578	IF ( nxl == 0 ) pt(:,:,nxlg:nxl-1) = pt(:,:,nxlg:nxl-1) - &
	579	pt_slope_offset
	580	IF ( nxr == nx ) pt(:,:,nxr+1:nxrg) = pt(:,:,nxr+1:nxrg) + &
	581	pt_slope_offset
[1]	582	ENDIF
	583
	584	!
[151]	585	!-- Impose a turbulent inflow using the recycling method
	586	IF ( turbulent_inflow ) CALL inflow_turbulence
	587
	588	!
[1]	589	!-- Impose a random perturbation on the horizontal velocity field
[106]	590	IF ( create_disturbances .AND. &
	591	( call_psolver_at_all_substeps .AND. &
[1]	592	intermediate_timestep_count == intermediate_timestep_count_max )&
[106]	593	.OR. ( .NOT. call_psolver_at_all_substeps .AND. &
	594	intermediate_timestep_count == 1 ) ) &
[1]	595	THEN
	596	time_disturb = time_disturb + dt_3d
	597	IF ( time_disturb >= dt_disturb ) THEN
[1111]	598	!$acc update host( u, v )
[1113]	599	IF ( numprocs == 1 ) on_device = .FALSE. ! workaround, remove later
[87]	600	IF ( hom(nzb+5,1,pr_palm,0) < disturbance_energy_limit ) THEN
[75]	601	CALL disturb_field( nzb_u_inner, tend, u )
	602	CALL disturb_field( nzb_v_inner, tend, v )
[707]	603	ELSEIF ( .NOT. bc_lr_cyc .OR. .NOT. bc_ns_cyc ) THEN
[1]	604	!
	605	!-- Runs with a non-cyclic lateral wall need perturbations
	606	!-- near the inflow throughout the whole simulation
	607	dist_range = 1
[75]	608	CALL disturb_field( nzb_u_inner, tend, u )
	609	CALL disturb_field( nzb_v_inner, tend, v )
[1]	610	dist_range = 0
	611	ENDIF
[1113]	612	IF ( numprocs == 1 ) on_device = .TRUE. ! workaround, remove later
[1111]	613	!$acc update device( u, v )
[1]	614	time_disturb = time_disturb - dt_disturb
	615	ENDIF
	616	ENDIF
	617
	618	!
	619	!-- Reduce the velocity divergence via the equation for perturbation
	620	!-- pressure.
[106]	621	IF ( intermediate_timestep_count == 1 .OR. &
	622	call_psolver_at_all_substeps ) THEN
[1]	623	CALL pres
	624	ENDIF
	625
	626	!
	627	!-- If required, compute liquid water content
[1015]	628	IF ( cloud_physics ) THEN
	629	CALL calc_liquid_water_content
	630	!$acc update device( ql )
	631	ENDIF
[1115]	632	!
	633	!-- If required, compute virtual potential temperature
	634	IF ( humidity ) THEN
	635	CALL compute_vpt
	636	!$acc update device( vpt )
	637	ENDIF
[1]	638	!
	639	!-- Compute the diffusion quantities
	640	IF ( .NOT. constant_diffusion ) THEN
	641
	642	!
[1276]	643	!-- Determine surface fluxes shf and qsws and surface values
	644	!-- pt_surface and q_surface in dependence on data from external
	645	!-- file LSF_DATA respectively
	646	IF ( ( large_scale_forcing .AND. lsf_surf ) .AND. &
	647	intermediate_timestep_count == intermediate_timestep_count_max )&
	648	THEN
	649	CALL ls_forcing_surf ( simulated_time )
	650	ENDIF
	651
	652	!
[1]	653	!-- First the vertical fluxes in the Prandtl layer are being computed
	654	IF ( prandtl_layer ) THEN
	655	CALL cpu_log( log_point(19), 'prandtl_fluxes', 'start' )
	656	CALL prandtl_fluxes
	657	CALL cpu_log( log_point(19), 'prandtl_fluxes', 'stop' )
	658	ENDIF
[1241]	659
[1]	660	!
	661	!-- Compute the diffusion coefficients
	662	CALL cpu_log( log_point(17), 'diffusivities', 'start' )
[75]	663	IF ( .NOT. humidity ) THEN
[97]	664	IF ( ocean ) THEN
[388]	665	CALL diffusivities( prho, prho_reference )
[97]	666	ELSE
	667	CALL diffusivities( pt, pt_reference )
	668	ENDIF
[1]	669	ELSE
[97]	670	CALL diffusivities( vpt, pt_reference )
[1]	671	ENDIF
	672	CALL cpu_log( log_point(17), 'diffusivities', 'stop' )
	673
	674	ENDIF
	675
	676	ENDDO ! Intermediate step loop
	677
	678	!
	679	!-- Increase simulation time and output times
[1111]	680	nr_timesteps_this_run = nr_timesteps_this_run + 1
[291]	681	current_timestep_number = current_timestep_number + 1
	682	simulated_time = simulated_time + dt_3d
	683	simulated_time_chr = time_to_string( simulated_time )
	684	time_since_reference_point = simulated_time - coupling_start_time
	685
[1]	686	IF ( simulated_time >= skip_time_data_output_av ) THEN
	687	time_do_av = time_do_av + dt_3d
	688	ENDIF
	689	IF ( simulated_time >= skip_time_do2d_xy ) THEN
	690	time_do2d_xy = time_do2d_xy + dt_3d
	691	ENDIF
	692	IF ( simulated_time >= skip_time_do2d_xz ) THEN
	693	time_do2d_xz = time_do2d_xz + dt_3d
	694	ENDIF
	695	IF ( simulated_time >= skip_time_do2d_yz ) THEN
	696	time_do2d_yz = time_do2d_yz + dt_3d
	697	ENDIF
	698	IF ( simulated_time >= skip_time_do3d ) THEN
	699	time_do3d = time_do3d + dt_3d
	700	ENDIF
[410]	701	DO mid = 1, masks
	702	IF ( simulated_time >= skip_time_domask(mid) ) THEN
	703	time_domask(mid)= time_domask(mid) + dt_3d
	704	ENDIF
	705	ENDDO
[1]	706	time_dvrp = time_dvrp + dt_3d
	707	IF ( simulated_time >= skip_time_dosp ) THEN
	708	time_dosp = time_dosp + dt_3d
	709	ENDIF
	710	time_dots = time_dots + dt_3d
[849]	711	IF ( .NOT. first_call_lpm ) THEN
[1]	712	time_dopts = time_dopts + dt_3d
	713	ENDIF
	714	IF ( simulated_time >= skip_time_dopr ) THEN
	715	time_dopr = time_dopr + dt_3d
	716	ENDIF
	717	time_dopr_listing = time_dopr_listing + dt_3d
	718	time_run_control = time_run_control + dt_3d
	719
	720	!
[102]	721	!-- Data exchange between coupled models
[291]	722	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
[102]	723	time_coupling = time_coupling + dt_3d
[343]	724
[108]	725	!
	726	!-- In case of model termination initiated by the local model
	727	!-- (terminate_coupled > 0), the coupler must be skipped because it would
	728	!-- cause an MPI intercomminucation hang.
	729	!-- If necessary, the coupler will be called at the beginning of the
	730	!-- next restart run.
	731	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
[102]	732	CALL surface_coupler
	733	time_coupling = time_coupling - dt_coupling
	734	ENDDO
	735	ENDIF
	736
	737	!
[46]	738	!-- Execute user-defined actions
	739	CALL user_actions( 'after_integration' )
	740
	741	!
[1]	742	!-- If Galilei transformation is used, determine the distance that the
	743	!-- model has moved so far
	744	IF ( galilei_transformation ) THEN
	745	advected_distance_x = advected_distance_x + u_gtrans * dt_3d
	746	advected_distance_y = advected_distance_y + v_gtrans * dt_3d
	747	ENDIF
	748
	749	!
	750	!-- Check, if restart is necessary (because cpu-time is expiring or
	751	!-- because it is forced by user) and set stop flag
[108]	752	!-- This call is skipped if the remote model has already initiated a restart.
	753	IF ( .NOT. terminate_run ) CALL check_for_restart
[1]	754
	755	!
	756	!-- Carry out statistical analysis and output at the requested output times.
	757	!-- The MOD function is used for calculating the output time counters (like
	758	!-- time_dopr) in order to regard a possible decrease of the output time
	759	!-- interval in case of restart runs
	760
	761	!
	762	!-- Set a flag indicating that so far no statistics have been created
	763	!-- for this time step
	764	flow_statistics_called = .FALSE.
	765
	766	!
	767	!-- If required, call flow_statistics for averaging in time
[1342]	768	IF ( averaging_interval_pr /= 0.0_wp .AND. &
[1]	769	( dt_dopr - time_dopr ) <= averaging_interval_pr .AND. &
	770	simulated_time >= skip_time_dopr ) THEN
	771	time_dopr_av = time_dopr_av + dt_3d
	772	IF ( time_dopr_av >= dt_averaging_input_pr ) THEN
	773	do_sum = .TRUE.
	774	time_dopr_av = MOD( time_dopr_av, &
	775	MAX( dt_averaging_input_pr, dt_3d ) )
	776	ENDIF
	777	ENDIF
	778	IF ( do_sum ) CALL flow_statistics
	779
	780	!
[410]	781	!-- Sum-up 3d-arrays for later output of time-averaged 2d/3d/masked data
[1342]	782	IF ( averaging_interval /= 0.0_wp .AND. &
[1]	783	( dt_data_output_av - time_do_av ) <= averaging_interval .AND. &
	784	simulated_time >= skip_time_data_output_av ) &
	785	THEN
	786	time_do_sla = time_do_sla + dt_3d
	787	IF ( time_do_sla >= dt_averaging_input ) THEN
	788	CALL sum_up_3d_data
	789	average_count_3d = average_count_3d + 1
	790	time_do_sla = MOD( time_do_sla, MAX( dt_averaging_input, dt_3d ) )
	791	ENDIF
	792	ENDIF
	793
	794	!
	795	!-- Calculate spectra for time averaging
[1342]	796	IF ( averaging_interval_sp /= 0.0_wp .AND. &
[1]	797	( dt_dosp - time_dosp ) <= averaging_interval_sp .AND. &
	798	simulated_time >= skip_time_dosp ) THEN
	799	time_dosp_av = time_dosp_av + dt_3d
	800	IF ( time_dosp_av >= dt_averaging_input_pr ) THEN
	801	CALL calc_spectra
	802	time_dosp_av = MOD( time_dosp_av, &
	803	MAX( dt_averaging_input_pr, dt_3d ) )
	804	ENDIF
	805	ENDIF
	806
	807	!
	808	!-- Computation and output of run control parameters.
[1001]	809	!-- This is also done whenever perturbations have been imposed
[1]	810	IF ( time_run_control >= dt_run_control .OR. &
[1001]	811	timestep_scheme(1:5) /= 'runge' .OR. disturbance_created ) &
[1]	812	THEN
	813	CALL run_control
	814	IF ( time_run_control >= dt_run_control ) THEN
	815	time_run_control = MOD( time_run_control, &
	816	MAX( dt_run_control, dt_3d ) )
	817	ENDIF
	818	ENDIF
	819
	820	!
	821	!-- Profile output (ASCII) on file
	822	IF ( time_dopr_listing >= dt_dopr_listing ) THEN
	823	CALL print_1d
	824	time_dopr_listing = MOD( time_dopr_listing, MAX( dt_dopr_listing, &
	825	dt_3d ) )
	826	ENDIF
	827
	828	!
	829	!-- Graphic output for PROFIL
	830	IF ( time_dopr >= dt_dopr ) THEN
	831	IF ( dopr_n /= 0 ) CALL data_output_profiles
	832	time_dopr = MOD( time_dopr, MAX( dt_dopr, dt_3d ) )
[1342]	833	time_dopr_av = 0.0_wp ! due to averaging (see above)
[1]	834	ENDIF
	835
	836	!
	837	!-- Graphic output for time series
	838	IF ( time_dots >= dt_dots ) THEN
[48]	839	CALL data_output_tseries
[1]	840	time_dots = MOD( time_dots, MAX( dt_dots, dt_3d ) )
	841	ENDIF
	842
	843	!
	844	!-- Output of spectra (formatted for use with PROFIL), in case of no
	845	!-- time averaging, spectra has to be calculated before
	846	IF ( time_dosp >= dt_dosp ) THEN
	847	IF ( average_count_sp == 0 ) CALL calc_spectra
	848	CALL data_output_spectra
	849	time_dosp = MOD( time_dosp, MAX( dt_dosp, dt_3d ) )
	850	ENDIF
	851
	852	!
	853	!-- 2d-data output (cross-sections)
	854	IF ( time_do2d_xy >= dt_do2d_xy ) THEN
	855	CALL data_output_2d( 'xy', 0 )
	856	time_do2d_xy = MOD( time_do2d_xy, MAX( dt_do2d_xy, dt_3d ) )
	857	ENDIF
	858	IF ( time_do2d_xz >= dt_do2d_xz ) THEN
	859	CALL data_output_2d( 'xz', 0 )
	860	time_do2d_xz = MOD( time_do2d_xz, MAX( dt_do2d_xz, dt_3d ) )
	861	ENDIF
	862	IF ( time_do2d_yz >= dt_do2d_yz ) THEN
	863	CALL data_output_2d( 'yz', 0 )
	864	time_do2d_yz = MOD( time_do2d_yz, MAX( dt_do2d_yz, dt_3d ) )
	865	ENDIF
	866
	867	!
	868	!-- 3d-data output (volume data)
	869	IF ( time_do3d >= dt_do3d ) THEN
	870	CALL data_output_3d( 0 )
	871	time_do3d = MOD( time_do3d, MAX( dt_do3d, dt_3d ) )
	872	ENDIF
	873
	874	!
[410]	875	!-- masked data output
[1308]	876	!-- Parallel netcdf output is not tested so far for masked data, hence
	877	!-- netcdf_data_format is switched back to non-paralell output.
	878	netcdf_data_format_save = netcdf_data_format
	879	IF ( netcdf_data_format == 5 ) netcdf_data_format = 3
	880	IF ( netcdf_data_format == 6 ) netcdf_data_format = 4
[410]	881	DO mid = 1, masks
	882	IF ( time_domask(mid) >= dt_domask(mid) ) THEN
	883	CALL data_output_mask( 0 )
	884	time_domask(mid) = MOD( time_domask(mid), &
	885	MAX( dt_domask(mid), dt_3d ) )
	886	ENDIF
	887	ENDDO
[1308]	888	netcdf_data_format = netcdf_data_format_save
[410]	889
	890	!
	891	!-- Output of time-averaged 2d/3d/masked data
[1]	892	IF ( time_do_av >= dt_data_output_av ) THEN
	893	CALL average_3d_data
	894	CALL data_output_2d( 'xy', 1 )
	895	CALL data_output_2d( 'xz', 1 )
	896	CALL data_output_2d( 'yz', 1 )
	897	CALL data_output_3d( 1 )
[1308]	898	!-- Parallel netcdf output is not tested so far for masked data, hence
	899	!-- netcdf_data_format is switched back to non-paralell output.
	900	netcdf_data_format_save = netcdf_data_format
	901	IF ( netcdf_data_format == 5 ) netcdf_data_format = 3
	902	IF ( netcdf_data_format == 6 ) netcdf_data_format = 4
[410]	903	DO mid = 1, masks
	904	CALL data_output_mask( 1 )
	905	ENDDO
[1308]	906	netcdf_data_format = netcdf_data_format_save
[1]	907	time_do_av = MOD( time_do_av, MAX( dt_data_output_av, dt_3d ) )
	908	ENDIF
	909
	910	!
	911	!-- Output of particle time series
[253]	912	IF ( particle_advection ) THEN
	913	IF ( time_dopts >= dt_dopts .OR. &
	914	( simulated_time >= particle_advection_start .AND. &
[849]	915	first_call_lpm ) ) THEN
[253]	916	CALL data_output_ptseries
	917	time_dopts = MOD( time_dopts, MAX( dt_dopts, dt_3d ) )
	918	ENDIF
[1]	919	ENDIF
	920
	921	!
	922	!-- Output of dvrp-graphics (isosurface, particles, slicer)
	923	#if defined( __dvrp_graphics )
	924	CALL DVRP_LOG_EVENT( -2, current_timestep_number-1 )
	925	#endif
	926	IF ( time_dvrp >= dt_dvrp ) THEN
	927	CALL data_output_dvrp
	928	time_dvrp = MOD( time_dvrp, MAX( dt_dvrp, dt_3d ) )
	929	ENDIF
	930	#if defined( __dvrp_graphics )
	931	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
	932	#endif
	933
	934	!
	935	!-- If required, set the heat flux for the next time step at a random value
	936	IF ( constant_heatflux .AND. random_heatflux ) CALL disturb_heatflux
	937
	938	!
	939	!-- Execute user-defined actions
	940	CALL user_actions( 'after_timestep' )
	941
	942	CALL cpu_log( log_point_s(10), 'timesteps', 'stop' )
	943
[667]	944
[1]	945	ENDDO ! time loop
	946
	947	#if defined( __dvrp_graphics )
	948	CALL DVRP_LOG_EVENT( -2, current_timestep_number )
	949	#endif
	950
	951	END SUBROUTINE time_integration

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