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source: palm/trunk/SOURCE/time_integration.f90 @ 1671

Last change on this file since 1671 was 1671, checked in by raasch, 9 years ago
bugfix: ghostpoint exchange for array diss in case that sgs velocities are used for particles
Property svn:keywords set to `Id`
File size: 40.0 KB

Rev	Line
[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	! ------------------
[1671]	22	! bugfix: ghostpoint exchange for array diss in case that sgs velocities are used
	23	! for particles
[1366]	24	!
	25	! Former revisions:
	26	! -----------------
	27	! $Id: time_integration.f90 1671 2015-09-25 03:29:37Z raasch $
	28	!
[1586]	29	! 1585 2015-04-30 07:05:52Z maronga
	30	! Moved call of radiation scheme. Added support for RRTM
	31	!
[1552]	32	! 1551 2015-03-03 14:18:16Z maronga
	33	! Added interface for different radiation schemes.
	34	!
[1497]	35	! 1496 2014-12-02 17:25:50Z maronga
	36	! Added calls for the land surface model and radiation scheme
	37	!
[1403]	38	! 1402 2014-05-09 14:25:13Z raasch
	39	! location messages modified
	40	!
[1385]	41	! 1384 2014-05-02 14:31:06Z raasch
	42	! location messages added
	43	!
[1381]	44	! 1380 2014-04-28 12:40:45Z heinze
	45	! CALL of nudge_ref added
	46	! bc_pt_t_val and bc_q_t_val are updated in case nudging is used
	47	!
[1366]	48	! 1365 2014-04-22 15:03:56Z boeske
[1365]	49	! Reset sums_ls_l to zero at each timestep
	50	! +sums_ls_l
	51	! Calculation of reference state (previously in subroutine calc_mean_profile)
	52
[1343]	53	! 1342 2014-03-26 17:04:47Z kanani
	54	! REAL constants defined as wp-kind
	55	!
[1321]	56	! 1320 2014-03-20 08:40:49Z raasch
[1320]	57	! ONLY-attribute added to USE-statements,
	58	! kind-parameters added to all INTEGER and REAL declaration statements,
	59	! kinds are defined in new module kinds,
	60	! old module precision_kind is removed,
	61	! revision history before 2012 removed,
	62	! comment fields (!:) to be used for variable explanations added to
	63	! all variable declaration statements
[1319]	64	! 1318 2014-03-17 13:35:16Z raasch
	65	! module interfaces removed
	66	!
[1309]	67	! 1308 2014-03-13 14:58:42Z fricke
	68	! +netcdf_data_format_save
	69	! For masked data, parallel netcdf output is not tested so far, hence
	70	! netcdf_data_format is switched back to non-paralell output.
	71	!
[1277]	72	! 1276 2014-01-15 13:40:41Z heinze
	73	! Use LSF_DATA also in case of Dirichlet bottom boundary condition for scalars
	74	!
[1258]	75	! 1257 2013-11-08 15:18:40Z raasch
	76	! acc-update-host directive for timestep removed
	77	!
[1242]	78	! 1241 2013-10-30 11:36:58Z heinze
	79	! Generalize calc_mean_profile for wider use
	80	! Determine shf and qsws in dependence on data from LSF_DATA
	81	! Determine ug and vg in dependence on data from LSF_DATA
[1222]	82	! 1221 2013-09-10 08:59:13Z raasch
	83	! host update of arrays before timestep is called
	84	!
[1182]	85	! 1179 2013-06-14 05:57:58Z raasch
	86	! mean profiles for reference state are only calculated if required,
	87	! small bugfix for background communication
	88	!
[1172]	89	! 1171 2013-05-30 11:27:45Z raasch
	90	! split of prognostic_equations deactivated (comment lines), for the time being
	91	!
[1132]	92	! 1128 2013-04-12 06:19:32Z raasch
[1128]	93	! asynchronous transfer of ghost point data realized for acc-optimized version:
	94	! prognostic_equations are first called two times for those points required for
	95	! the left-right and north-south exchange, respectively, and then for the
	96	! remaining points,
	97	! those parts requiring global communication moved from prognostic_equations to
	98	! here
[392]	99	!
[1116]	100	! 1115 2013-03-26 18:16:16Z hoffmann
	101	! calculation of qr and nr is restricted to precipitation
	102	!
[1114]	103	! 1113 2013-03-10 02:48:14Z raasch
	104	! GPU-porting of boundary conditions,
	105	! openACC directives updated
	106	! formal parameter removed from routine boundary_conds
	107	!
[1112]	108	! 1111 2013-03-08 23:54:10Z raasch
	109	! +internal timestep counter for cpu statistics added,
	110	! openACC directives updated
	111	!
[1093]	112	! 1092 2013-02-02 11:24:22Z raasch
	113	! unused variables removed
	114	!
[1066]	115	! 1065 2012-11-22 17:42:36Z hoffmann
	116	! exchange of diss (dissipation rate) in case of turbulence = .TRUE. added
	117	!
[1054]	118	! 1053 2012-11-13 17:11:03Z hoffmann
	119	! exchange of ghost points for nr, qr added
	120	!
[1037]	121	! 1036 2012-10-22 13:43:42Z raasch
	122	! code put under GPL (PALM 3.9)
	123	!
[1020]	124	! 1019 2012-09-28 06:46:45Z raasch
	125	! non-optimized version of prognostic_equations removed
	126	!
[1017]	127	! 1015 2012-09-27 09:23:24Z raasch
	128	! +call of prognostic_equations_acc
	129	!
[1002]	130	! 1001 2012-09-13 14:08:46Z raasch
	131	! all actions concerning leapfrog- and upstream-spline-scheme removed
	132	!
[850]	133	! 849 2012-03-15 10:35:09Z raasch
	134	! advec_particles renamed lpm, first_call_advec_particles renamed first_call_lpm
	135	!
[826]	136	! 825 2012-02-19 03:03:44Z raasch
	137	! wang_collision_kernel renamed wang_kernel
	138	!
[1]	139	! Revision 1.1 1997/08/11 06:19:04 raasch
	140	! Initial revision
	141	!
	142	!
	143	! Description:
	144	! ------------
	145	! Integration in time of the model equations, statistical analysis and graphic
	146	! output
	147	!------------------------------------------------------------------------------!
	148
[1320]	149	USE advec_ws, &
	150	ONLY: ws_statistics
	151
	152	USE arrays_3d, &
[1380]	153	ONLY: diss, dzu, e_p, nr_p, prho, pt, pt_p, pt_init, q_init, q, ql, &
	154	ql_c, ql_v, ql_vp, qr_p, q_p, ref_state, rho, sa_p, tend, u, &
	155	u_p, v, vpt, v_p, w_p
[1320]	156
[1365]	157	USE calc_mean_profile_mod, &
[1320]	158	ONLY: calc_mean_profile
	159
	160	USE control_parameters, &
	161	ONLY: advected_distance_x, advected_distance_y, average_count_3d, &
	162	average_count_sp, averaging_interval, averaging_interval_pr, &
[1380]	163	averaging_interval_sp, bc_lr_cyc, bc_ns_cyc, bc_pt_t_val, &
	164	bc_q_t_val, call_psolver_at_all_substeps, cloud_droplets, &
	165	cloud_physics, constant_heatflux, create_disturbances, dopr_n, &
[1320]	166	constant_diffusion, coupling_mode, coupling_start_time, &
	167	current_timestep_number, disturbance_created, &
	168	disturbance_energy_limit, dist_range, do_sum, dt_3d, &
	169	dt_averaging_input, dt_averaging_input_pr, dt_coupling, &
	170	dt_data_output_av, dt_disturb, dt_do2d_xy, dt_do2d_xz, &
	171	dt_do2d_yz, dt_do3d, dt_domask,dt_dopts, dt_dopr, &
	172	dt_dopr_listing, dt_dosp, dt_dots, dt_dvrp, dt_run_control, &
	173	end_time, first_call_lpm, galilei_transformation, humidity, &
	174	icloud_scheme, intermediate_timestep_count, &
	175	intermediate_timestep_count_max, large_scale_forcing, &
	176	loop_optimization, lsf_surf, lsf_vert, masks, mid, &
[1365]	177	netcdf_data_format, neutral, nr_timesteps_this_run, nudging, &
	178	ocean, on_device, passive_scalar, prandtl_layer, precipitation, &
[1320]	179	prho_reference, pt_reference, pt_slope_offset, random_heatflux, &
	180	run_coupled, simulated_time, simulated_time_chr, &
	181	skip_time_do2d_xy, skip_time_do2d_xz, skip_time_do2d_yz, &
	182	skip_time_do3d, skip_time_domask, skip_time_dopr, &
	183	skip_time_dosp, skip_time_data_output_av, sloping_surface, &
	184	stop_dt, terminate_coupled, terminate_run, timestep_scheme, &
	185	time_coupling, time_do2d_xy, time_do2d_xz, time_do2d_yz, &
	186	time_do3d, time_domask, time_dopr, time_dopr_av, &
	187	time_dopr_listing, time_dopts, time_dosp, time_dosp_av, &
	188	time_dots, time_do_av, time_do_sla, time_disturb, time_dvrp, &
[1496]	189	time_run_control, time_since_reference_point, &
	190	turbulence, &
[1320]	191	turbulent_inflow, use_initial_profile_as_reference, &
	192	use_single_reference_value, u_gtrans, v_gtrans, ws_scheme_mom, &
	193	ws_scheme_sca
	194
	195	USE cpulog, &
	196	ONLY: cpu_log, log_point, log_point_s
	197
	198	USE indices, &
	199	ONLY: i_left, i_right, j_north, j_south, nbgp, nx, nxl, nxlg, nxr, &
[1380]	200	nxrg, nyn, nys, nzb, nzt, nzb_u_inner, nzb_v_inner
[1320]	201
	202	USE interaction_droplets_ptq_mod, &
	203	ONLY: interaction_droplets_ptq
	204
	205	USE kinds
	206
[1496]	207	USE land_surface_model_mod, &
	208	ONLY: land_surface, lsm_energy_balance, lsm_soil_model
	209
[1320]	210	USE ls_forcing_mod, &
	211	ONLY: ls_forcing_surf, ls_forcing_vert
	212
[1365]	213	USE nudge_mod, &
[1380]	214	ONLY: calc_tnudge, nudge_ref
[1365]	215
[1320]	216	USE particle_attributes, &
[1671]	217	ONLY: particle_advection, particle_advection_start, &
	218	use_sgs_for_particles, wang_kernel
[1320]	219
[1]	220	USE pegrid
	221
[1320]	222	USE production_e_mod, &
	223	ONLY: production_e_init
	224
[1402]	225	USE progress_bar, &
	226	ONLY: finish_progress_bar, output_progress_bar
	227
[1320]	228	USE prognostic_equations_mod, &
	229	ONLY: prognostic_equations_acc, prognostic_equations_cache, &
	230	prognostic_equations_vector
	231
[1496]	232	USE radiation_model_mod, &
[1585]	233	ONLY: dt_radiation, radiation, radiation_clearsky, &
	234	radiation_rrtmg, radiation_scheme, time_radiation
[1496]	235
[1320]	236	USE statistics, &
[1365]	237	ONLY: flow_statistics_called, hom, pr_palm, sums_ls_l
[1320]	238
	239	USE user_actions_mod, &
	240	ONLY: user_actions
	241
[1]	242	IMPLICIT NONE
	243
[1320]	244	CHARACTER (LEN=9) :: time_to_string !:
[1]	245
[1320]	246	INTEGER(iwp) :: netcdf_data_format_save !:
	247
[1]	248	!
	249	!-- At the beginning of a simulation determine the time step as well as
	250	!-- determine and print out the run control parameters
[1342]	251	IF ( simulated_time == 0.0_wp ) CALL timestep
[667]	252
[1]	253	CALL run_control
	254
[667]	255
[108]	256	!
	257	!-- Data exchange between coupled models in case that a call has been omitted
	258	!-- at the end of the previous run of a job chain.
[291]	259	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
[108]	260	!
	261	!-- In case of model termination initiated by the local model the coupler
	262	!-- must not be called because this would again cause an MPI hang.
	263	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
	264	CALL surface_coupler
	265	time_coupling = time_coupling - dt_coupling
	266	ENDDO
[1342]	267	IF (time_coupling == 0.0_wp .AND. time_since_reference_point < dt_coupling)&
[348]	268	THEN
	269	time_coupling = time_since_reference_point
	270	ENDIF
[108]	271	ENDIF
	272
	273
[1]	274	#if defined( __dvrp_graphics )
	275	!
	276	!-- Time measurement with dvrp software
	277	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
	278	#endif
	279
[1402]	280	CALL location_message( 'start with time-stepping', .TRUE. )
[1]	281	!
	282	!-- Start of the time loop
	283	DO WHILE ( simulated_time < end_time .AND. .NOT. stop_dt .AND. &
	284	.NOT. terminate_run )
	285
	286	CALL cpu_log( log_point_s(10), 'timesteps', 'start' )
[1221]	287
[1]	288	!
	289	!-- Determine size of next time step
[1342]	290	IF ( simulated_time /= 0.0_wp ) THEN
[1221]	291	CALL timestep
	292	ENDIF
	293
[1]	294	!
[1241]	295	!-- Determine ug, vg and w_subs in dependence on data from external file
	296	!-- LSF_DATA
[1365]	297	IF ( large_scale_forcing .AND. lsf_vert ) THEN
[1241]	298	CALL ls_forcing_vert ( simulated_time )
[1365]	299	sums_ls_l = 0.0_wp
[1241]	300	ENDIF
	301
	302	!
[1380]	303	!-- Set pt_init and q_init to the current profiles taken from
	304	!-- NUDGING_DATA
	305	IF ( nudging ) THEN
	306	CALL nudge_ref ( simulated_time )
	307	!
	308	!-- Store temperature gradient at the top boundary for possible Neumann
	309	!-- boundary condition
	310	bc_pt_t_val = ( pt_init(nzt+1) - pt_init(nzt) ) / dzu(nzt+1)
	311	bc_q_t_val = ( q_init(nzt+1) - q_init(nzt) ) / dzu(nzt+1)
	312	ENDIF
	313
	314	!
[1]	315	!-- Execute the user-defined actions
	316	CALL user_actions( 'before_timestep' )
	317
	318	!
	319	!-- Start of intermediate step loop
	320	intermediate_timestep_count = 0
	321	DO WHILE ( intermediate_timestep_count < &
	322	intermediate_timestep_count_max )
	323
	324	intermediate_timestep_count = intermediate_timestep_count + 1
	325
	326	!
	327	!-- Set the steering factors for the prognostic equations which depend
	328	!-- on the timestep scheme
	329	CALL timestep_scheme_steering
	330
	331	!
[1128]	332	!-- Calculate those variables needed in the tendency terms which need
	333	!-- global communication
[1179]	334	IF ( .NOT. use_single_reference_value .AND. &
	335	.NOT. use_initial_profile_as_reference ) THEN
	336	!
	337	!-- Horizontally averaged profiles to be used as reference state in
	338	!-- buoyancy terms (WARNING: only the respective last call of
	339	!-- calc_mean_profile defines the reference state!)
[1365]	340	IF ( .NOT. neutral ) THEN
	341	CALL calc_mean_profile( pt, 4 )
	342	ref_state(:) = hom(:,1,4,0) ! this is used in the buoyancy term
	343	ENDIF
	344	IF ( ocean ) THEN
	345	CALL calc_mean_profile( rho, 64 )
	346	ref_state(:) = hom(:,1,64,0)
	347	ENDIF
	348	IF ( humidity ) THEN
	349	CALL calc_mean_profile( vpt, 44 )
	350	ref_state(:) = hom(:,1,44,0)
	351	ENDIF
	352
[1179]	353	ENDIF
	354
[1128]	355	IF ( .NOT. constant_diffusion ) CALL production_e_init
	356	IF ( ( ws_scheme_mom .OR. ws_scheme_sca ) .AND. &
	357	intermediate_timestep_count == 1 ) CALL ws_statistics
[1365]	358	!
	359	!-- In case of nudging calculate current nudging time scale and horizontal
[1380]	360	!-- means of u, v, pt and q
[1365]	361	IF ( nudging ) THEN
	362	CALL calc_tnudge( simulated_time )
	363	CALL calc_mean_profile( u, 1 )
	364	CALL calc_mean_profile( v, 2 )
	365	CALL calc_mean_profile( pt, 4 )
	366	CALL calc_mean_profile( q, 41 )
	367	ENDIF
[1128]	368
[1585]	369	IF ( radiation .AND. intermediate_timestep_count &
	370	== intermediate_timestep_count_max ) THEN
	371
	372	time_radiation = time_radiation + dt_3d
	373
	374	IF ( time_radiation >= dt_radiation ) THEN
	375
	376	CALL cpu_log( log_point(50), 'radiation', 'start' )
	377
	378	time_radiation = time_radiation - dt_radiation
	379	IF ( radiation_scheme == 'clear-sky' ) THEN
	380	CALL radiation_clearsky
	381	ELSEIF ( radiation_scheme == 'rrtmg' ) THEN
	382	CALL radiation_rrtmg
	383	ENDIF
	384
	385	CALL cpu_log( log_point(50), 'radiation', 'stop' )
	386	ENDIF
	387	ENDIF
[1128]	388	!
[1]	389	!-- Solve the prognostic equations. A fast cache optimized version with
	390	!-- only one single loop is used in case of Piascek-Williams advection
	391	!-- scheme. NEC vector machines use a different version, because
	392	!-- in the other versions a good vectorization is prohibited due to
	393	!-- inlining problems.
[1019]	394	IF ( loop_optimization == 'cache' ) THEN
	395	CALL prognostic_equations_cache
	396	ELSEIF ( loop_optimization == 'vector' ) THEN
[63]	397	CALL prognostic_equations_vector
[1015]	398	ELSEIF ( loop_optimization == 'acc' ) THEN
[1171]	399	i_left = nxl; i_right = nxr
	400	j_south = nys; j_north = nyn
	401	CALL prognostic_equations_acc
	402
	403	! i_left = nxl; i_right = nxl+nbgp-1
[1128]	404	! j_south = nys; j_north = nyn
	405	! CALL prognostic_equations_acc
[1171]	406	! i_left = nxr-nbgp+1; i_right = nxr
	407	! j_south = nys; j_north = nyn
	408	! CALL prognostic_equations_acc
[1128]	409
	410	!
	411	!-- Exchange of ghost points (lateral boundary conditions)
	412	IF ( background_communication ) THEN
	413
	414	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
	415
	416	send_receive = 'lr'
	417	sendrecv_in_background = .TRUE.
	418	req = 0
	419	req_count = 0
	420
	421	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	422	on_device = .TRUE. ! to be removed after complete porting
	423	ELSE ! of ghost point exchange
	424	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
	425	ENDIF
	426
	427	CALL exchange_horiz( u_p, nbgp )
	428	CALL exchange_horiz( v_p, nbgp )
	429	CALL exchange_horiz( w_p, nbgp )
	430	CALL exchange_horiz( pt_p, nbgp )
	431	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	432	IF ( ocean ) THEN
	433	CALL exchange_horiz( sa_p, nbgp )
	434	CALL exchange_horiz( rho, nbgp )
	435	CALL exchange_horiz( prho, nbgp )
	436	ENDIF
	437	IF (humidity .OR. passive_scalar) THEN
	438	CALL exchange_horiz( q_p, nbgp )
	439	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
	440	CALL exchange_horiz( qr_p, nbgp )
	441	CALL exchange_horiz( nr_p, nbgp )
	442	ENDIF
	443	ENDIF
	444	IF ( cloud_droplets ) THEN
	445	CALL exchange_horiz( ql, nbgp )
	446	CALL exchange_horiz( ql_c, nbgp )
	447	CALL exchange_horiz( ql_v, nbgp )
	448	CALL exchange_horiz( ql_vp, nbgp )
	449	ENDIF
[1671]	450	IF ( wang_kernel .OR. turbulence .OR. use_sgs_for_particles ) &
	451	THEN
	452	CALL exchange_horiz( diss, nbgp )
	453	ENDIF
[1128]	454
	455	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	456	on_device = .FALSE. ! to be removed after complete porting
	457	ELSE ! of ghost point exchange
	458	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	459	ENDIF
	460
	461	sendrecv_in_background = .FALSE.
	462
	463	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'pause' )
	464
	465	ENDIF
	466
[1171]	467	! i_left = nxl+nbgp; i_right = nxr-nbgp
	468	! j_south = nys; j_north = nys+nbgp-1
	469	! CALL prognostic_equations_acc
	470	! i_left = nxl+nbgp; i_right = nxr-nbgp
	471	! j_south = nyn-nbgp+1; j_north = nyn
	472	! CALL prognostic_equations_acc
[1128]	473
	474	IF ( background_communication ) THEN
	475	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'start' )
	476	#if defined( __parallel )
	477	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
	478	#endif
	479	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'pause' )
	480
	481	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'continue' )
	482
	483	send_receive = 'ns'
	484	sendrecv_in_background = .TRUE.
	485	req = 0
	486	req_count = 0
	487
	488	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	489	on_device = .TRUE. ! to be removed after complete porting
	490	ELSE ! of ghost point exchange
	491	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
	492	ENDIF
	493
	494	CALL exchange_horiz( u_p, nbgp )
	495	CALL exchange_horiz( v_p, nbgp )
	496	CALL exchange_horiz( w_p, nbgp )
	497	CALL exchange_horiz( pt_p, nbgp )
	498	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	499	IF ( ocean ) THEN
	500	CALL exchange_horiz( sa_p, nbgp )
	501	CALL exchange_horiz( rho, nbgp )
	502	CALL exchange_horiz( prho, nbgp )
	503	ENDIF
	504	IF (humidity .OR. passive_scalar) THEN
	505	CALL exchange_horiz( q_p, nbgp )
	506	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
	507	CALL exchange_horiz( qr_p, nbgp )
	508	CALL exchange_horiz( nr_p, nbgp )
	509	ENDIF
	510	ENDIF
	511	IF ( cloud_droplets ) THEN
	512	CALL exchange_horiz( ql, nbgp )
	513	CALL exchange_horiz( ql_c, nbgp )
	514	CALL exchange_horiz( ql_v, nbgp )
	515	CALL exchange_horiz( ql_vp, nbgp )
	516	ENDIF
[1671]	517	IF ( wang_kernel .OR. turbulence .OR. use_sgs_for_particles ) &
	518	THEN
	519	CALL exchange_horiz( diss, nbgp )
	520	ENDIF
[1128]	521
	522	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	523	on_device = .FALSE. ! to be removed after complete porting
	524	ELSE ! of ghost point exchange
	525	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	526	ENDIF
	527
	528	sendrecv_in_background = .FALSE.
	529
	530	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
	531
	532	ENDIF
	533
[1171]	534	! i_left = nxl+nbgp; i_right = nxr-nbgp
	535	! j_south = nys+nbgp; j_north = nyn-nbgp
	536	! CALL prognostic_equations_acc
[1128]	537
	538	IF ( background_communication ) THEN
	539	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'continue' )
	540	#if defined( __parallel )
	541	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
	542	#endif
	543	send_receive = 'al'
	544	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'stop' )
	545	ENDIF
	546
[1]	547	ENDIF
	548
	549	!
[849]	550	!-- Particle transport/physics with the Lagrangian particle model
	551	!-- (only once during intermediate steps, because it uses an Euler-step)
[1128]	552	!-- ### particle model should be moved before prognostic_equations, in order
	553	!-- to regard droplet interactions directly
[63]	554	IF ( particle_advection .AND. &
	555	simulated_time >= particle_advection_start .AND. &
[1]	556	intermediate_timestep_count == 1 ) THEN
[849]	557	CALL lpm
	558	first_call_lpm = .FALSE.
[1]	559	ENDIF
	560
	561	!
	562	!-- Interaction of droplets with temperature and specific humidity.
	563	!-- Droplet condensation and evaporation is calculated within
	564	!-- advec_particles.
	565	IF ( cloud_droplets .AND. &
	566	intermediate_timestep_count == intermediate_timestep_count_max )&
	567	THEN
	568	CALL interaction_droplets_ptq
	569	ENDIF
	570
	571	!
	572	!-- Exchange of ghost points (lateral boundary conditions)
[1128]	573	IF ( .NOT. background_communication ) THEN
[1113]	574
[1128]	575	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
[1113]	576
[1128]	577	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	578	on_device = .TRUE. ! to be removed after complete porting
	579	ELSE ! of ghost point exchange
	580	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
[1053]	581	ENDIF
[1]	582
[1128]	583	CALL exchange_horiz( u_p, nbgp )
	584	CALL exchange_horiz( v_p, nbgp )
	585	CALL exchange_horiz( w_p, nbgp )
	586	CALL exchange_horiz( pt_p, nbgp )
	587	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	588	IF ( ocean ) THEN
	589	CALL exchange_horiz( sa_p, nbgp )
	590	CALL exchange_horiz( rho, nbgp )
	591	CALL exchange_horiz( prho, nbgp )
	592	ENDIF
	593	IF (humidity .OR. passive_scalar) THEN
	594	CALL exchange_horiz( q_p, nbgp )
[1179]	595	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
	596	precipitation ) THEN
[1128]	597	CALL exchange_horiz( qr_p, nbgp )
	598	CALL exchange_horiz( nr_p, nbgp )
	599	ENDIF
	600	ENDIF
	601	IF ( cloud_droplets ) THEN
	602	CALL exchange_horiz( ql, nbgp )
	603	CALL exchange_horiz( ql_c, nbgp )
	604	CALL exchange_horiz( ql_v, nbgp )
	605	CALL exchange_horiz( ql_vp, nbgp )
	606	ENDIF
[1671]	607	IF ( wang_kernel .OR. turbulence .OR. use_sgs_for_particles ) &
	608	THEN
	609	CALL exchange_horiz( diss, nbgp )
	610	ENDIF
[1128]	611
	612	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	613	on_device = .FALSE. ! to be removed after complete porting
	614	ELSE ! of ghost point exchange
	615	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	616	ENDIF
	617
	618	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
	619
[1113]	620	ENDIF
	621
[1]	622	!
	623	!-- Boundary conditions for the prognostic quantities (except of the
	624	!-- velocities at the outflow in case of a non-cyclic lateral wall)
[1113]	625	CALL boundary_conds
[1]	626
	627	!
[1496]	628	!-- When using the land surface model:
	629	!-- 1) solve energy balance equation to calculate new skin temperature
	630	!-- 2) run soil model
	631	IF ( land_surface ) THEN
	632
	633	CALL cpu_log( log_point(54), 'land_surface', 'start' )
	634
	635	CALL lsm_energy_balance
	636	CALL lsm_soil_model
	637
	638	CALL cpu_log( log_point(54), 'land_surface', 'stop' )
	639
	640	ENDIF
	641
	642	!
[73]	643	!-- Swap the time levels in preparation for the next time step.
	644	CALL swap_timelevel
	645
	646	!
[1]	647	!-- Temperature offset must be imposed at cyclic boundaries in x-direction
	648	!-- when a sloping surface is used
	649	IF ( sloping_surface ) THEN
[707]	650	IF ( nxl == 0 ) pt(:,:,nxlg:nxl-1) = pt(:,:,nxlg:nxl-1) - &
	651	pt_slope_offset
	652	IF ( nxr == nx ) pt(:,:,nxr+1:nxrg) = pt(:,:,nxr+1:nxrg) + &
	653	pt_slope_offset
[1]	654	ENDIF
	655
	656	!
[151]	657	!-- Impose a turbulent inflow using the recycling method
	658	IF ( turbulent_inflow ) CALL inflow_turbulence
	659
	660	!
[1]	661	!-- Impose a random perturbation on the horizontal velocity field
[106]	662	IF ( create_disturbances .AND. &
	663	( call_psolver_at_all_substeps .AND. &
[1]	664	intermediate_timestep_count == intermediate_timestep_count_max )&
[106]	665	.OR. ( .NOT. call_psolver_at_all_substeps .AND. &
	666	intermediate_timestep_count == 1 ) ) &
[1]	667	THEN
	668	time_disturb = time_disturb + dt_3d
	669	IF ( time_disturb >= dt_disturb ) THEN
[1111]	670	!$acc update host( u, v )
[1113]	671	IF ( numprocs == 1 ) on_device = .FALSE. ! workaround, remove later
[87]	672	IF ( hom(nzb+5,1,pr_palm,0) < disturbance_energy_limit ) THEN
[75]	673	CALL disturb_field( nzb_u_inner, tend, u )
	674	CALL disturb_field( nzb_v_inner, tend, v )
[707]	675	ELSEIF ( .NOT. bc_lr_cyc .OR. .NOT. bc_ns_cyc ) THEN
[1]	676	!
	677	!-- Runs with a non-cyclic lateral wall need perturbations
	678	!-- near the inflow throughout the whole simulation
	679	dist_range = 1
[75]	680	CALL disturb_field( nzb_u_inner, tend, u )
	681	CALL disturb_field( nzb_v_inner, tend, v )
[1]	682	dist_range = 0
	683	ENDIF
[1113]	684	IF ( numprocs == 1 ) on_device = .TRUE. ! workaround, remove later
[1111]	685	!$acc update device( u, v )
[1]	686	time_disturb = time_disturb - dt_disturb
	687	ENDIF
	688	ENDIF
	689
	690	!
	691	!-- Reduce the velocity divergence via the equation for perturbation
	692	!-- pressure.
[106]	693	IF ( intermediate_timestep_count == 1 .OR. &
	694	call_psolver_at_all_substeps ) THEN
[1]	695	CALL pres
	696	ENDIF
	697
	698	!
	699	!-- If required, compute liquid water content
[1015]	700	IF ( cloud_physics ) THEN
	701	CALL calc_liquid_water_content
	702	!$acc update device( ql )
	703	ENDIF
[1115]	704	!
	705	!-- If required, compute virtual potential temperature
	706	IF ( humidity ) THEN
	707	CALL compute_vpt
	708	!$acc update device( vpt )
	709	ENDIF
[1585]	710
[1]	711	!
	712	!-- Compute the diffusion quantities
	713	IF ( .NOT. constant_diffusion ) THEN
	714
	715	!
[1276]	716	!-- Determine surface fluxes shf and qsws and surface values
	717	!-- pt_surface and q_surface in dependence on data from external
	718	!-- file LSF_DATA respectively
	719	IF ( ( large_scale_forcing .AND. lsf_surf ) .AND. &
	720	intermediate_timestep_count == intermediate_timestep_count_max )&
	721	THEN
	722	CALL ls_forcing_surf ( simulated_time )
	723	ENDIF
	724
	725	!
[1]	726	!-- First the vertical fluxes in the Prandtl layer are being computed
	727	IF ( prandtl_layer ) THEN
	728	CALL cpu_log( log_point(19), 'prandtl_fluxes', 'start' )
	729	CALL prandtl_fluxes
	730	CALL cpu_log( log_point(19), 'prandtl_fluxes', 'stop' )
	731	ENDIF
[1241]	732
[1]	733	!
	734	!-- Compute the diffusion coefficients
	735	CALL cpu_log( log_point(17), 'diffusivities', 'start' )
[75]	736	IF ( .NOT. humidity ) THEN
[97]	737	IF ( ocean ) THEN
[388]	738	CALL diffusivities( prho, prho_reference )
[97]	739	ELSE
	740	CALL diffusivities( pt, pt_reference )
	741	ENDIF
[1]	742	ELSE
[97]	743	CALL diffusivities( vpt, pt_reference )
[1]	744	ENDIF
	745	CALL cpu_log( log_point(17), 'diffusivities', 'stop' )
	746
	747	ENDIF
	748
	749	ENDDO ! Intermediate step loop
	750
	751	!
	752	!-- Increase simulation time and output times
[1111]	753	nr_timesteps_this_run = nr_timesteps_this_run + 1
[291]	754	current_timestep_number = current_timestep_number + 1
	755	simulated_time = simulated_time + dt_3d
	756	simulated_time_chr = time_to_string( simulated_time )
	757	time_since_reference_point = simulated_time - coupling_start_time
	758
[1]	759	IF ( simulated_time >= skip_time_data_output_av ) THEN
	760	time_do_av = time_do_av + dt_3d
	761	ENDIF
	762	IF ( simulated_time >= skip_time_do2d_xy ) THEN
	763	time_do2d_xy = time_do2d_xy + dt_3d
	764	ENDIF
	765	IF ( simulated_time >= skip_time_do2d_xz ) THEN
	766	time_do2d_xz = time_do2d_xz + dt_3d
	767	ENDIF
	768	IF ( simulated_time >= skip_time_do2d_yz ) THEN
	769	time_do2d_yz = time_do2d_yz + dt_3d
	770	ENDIF
	771	IF ( simulated_time >= skip_time_do3d ) THEN
	772	time_do3d = time_do3d + dt_3d
	773	ENDIF
[410]	774	DO mid = 1, masks
	775	IF ( simulated_time >= skip_time_domask(mid) ) THEN
	776	time_domask(mid)= time_domask(mid) + dt_3d
	777	ENDIF
	778	ENDDO
[1]	779	time_dvrp = time_dvrp + dt_3d
	780	IF ( simulated_time >= skip_time_dosp ) THEN
	781	time_dosp = time_dosp + dt_3d
	782	ENDIF
	783	time_dots = time_dots + dt_3d
[849]	784	IF ( .NOT. first_call_lpm ) THEN
[1]	785	time_dopts = time_dopts + dt_3d
	786	ENDIF
	787	IF ( simulated_time >= skip_time_dopr ) THEN
	788	time_dopr = time_dopr + dt_3d
	789	ENDIF
	790	time_dopr_listing = time_dopr_listing + dt_3d
	791	time_run_control = time_run_control + dt_3d
	792
	793	!
[102]	794	!-- Data exchange between coupled models
[291]	795	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
[102]	796	time_coupling = time_coupling + dt_3d
[343]	797
[108]	798	!
	799	!-- In case of model termination initiated by the local model
	800	!-- (terminate_coupled > 0), the coupler must be skipped because it would
	801	!-- cause an MPI intercomminucation hang.
	802	!-- If necessary, the coupler will be called at the beginning of the
	803	!-- next restart run.
	804	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
[102]	805	CALL surface_coupler
	806	time_coupling = time_coupling - dt_coupling
	807	ENDDO
	808	ENDIF
	809
	810	!
[46]	811	!-- Execute user-defined actions
	812	CALL user_actions( 'after_integration' )
	813
	814	!
[1]	815	!-- If Galilei transformation is used, determine the distance that the
	816	!-- model has moved so far
	817	IF ( galilei_transformation ) THEN
	818	advected_distance_x = advected_distance_x + u_gtrans * dt_3d
	819	advected_distance_y = advected_distance_y + v_gtrans * dt_3d
	820	ENDIF
	821
	822	!
	823	!-- Check, if restart is necessary (because cpu-time is expiring or
	824	!-- because it is forced by user) and set stop flag
[108]	825	!-- This call is skipped if the remote model has already initiated a restart.
	826	IF ( .NOT. terminate_run ) CALL check_for_restart
[1]	827
	828	!
	829	!-- Carry out statistical analysis and output at the requested output times.
	830	!-- The MOD function is used for calculating the output time counters (like
	831	!-- time_dopr) in order to regard a possible decrease of the output time
	832	!-- interval in case of restart runs
	833
	834	!
	835	!-- Set a flag indicating that so far no statistics have been created
	836	!-- for this time step
	837	flow_statistics_called = .FALSE.
	838
	839	!
	840	!-- If required, call flow_statistics for averaging in time
[1342]	841	IF ( averaging_interval_pr /= 0.0_wp .AND. &
[1]	842	( dt_dopr - time_dopr ) <= averaging_interval_pr .AND. &
	843	simulated_time >= skip_time_dopr ) THEN
	844	time_dopr_av = time_dopr_av + dt_3d
	845	IF ( time_dopr_av >= dt_averaging_input_pr ) THEN
	846	do_sum = .TRUE.
	847	time_dopr_av = MOD( time_dopr_av, &
	848	MAX( dt_averaging_input_pr, dt_3d ) )
	849	ENDIF
	850	ENDIF
	851	IF ( do_sum ) CALL flow_statistics
	852
	853	!
[410]	854	!-- Sum-up 3d-arrays for later output of time-averaged 2d/3d/masked data
[1342]	855	IF ( averaging_interval /= 0.0_wp .AND. &
[1]	856	( dt_data_output_av - time_do_av ) <= averaging_interval .AND. &
	857	simulated_time >= skip_time_data_output_av ) &
	858	THEN
	859	time_do_sla = time_do_sla + dt_3d
	860	IF ( time_do_sla >= dt_averaging_input ) THEN
	861	CALL sum_up_3d_data
	862	average_count_3d = average_count_3d + 1
	863	time_do_sla = MOD( time_do_sla, MAX( dt_averaging_input, dt_3d ) )
	864	ENDIF
	865	ENDIF
	866
	867	!
	868	!-- Calculate spectra for time averaging
[1342]	869	IF ( averaging_interval_sp /= 0.0_wp .AND. &
[1]	870	( dt_dosp - time_dosp ) <= averaging_interval_sp .AND. &
	871	simulated_time >= skip_time_dosp ) THEN
	872	time_dosp_av = time_dosp_av + dt_3d
	873	IF ( time_dosp_av >= dt_averaging_input_pr ) THEN
	874	CALL calc_spectra
	875	time_dosp_av = MOD( time_dosp_av, &
	876	MAX( dt_averaging_input_pr, dt_3d ) )
	877	ENDIF
	878	ENDIF
	879
	880	!
	881	!-- Computation and output of run control parameters.
[1001]	882	!-- This is also done whenever perturbations have been imposed
[1]	883	IF ( time_run_control >= dt_run_control .OR. &
[1001]	884	timestep_scheme(1:5) /= 'runge' .OR. disturbance_created ) &
[1]	885	THEN
	886	CALL run_control
	887	IF ( time_run_control >= dt_run_control ) THEN
	888	time_run_control = MOD( time_run_control, &
	889	MAX( dt_run_control, dt_3d ) )
	890	ENDIF
	891	ENDIF
	892
	893	!
	894	!-- Profile output (ASCII) on file
	895	IF ( time_dopr_listing >= dt_dopr_listing ) THEN
	896	CALL print_1d
	897	time_dopr_listing = MOD( time_dopr_listing, MAX( dt_dopr_listing, &
	898	dt_3d ) )
	899	ENDIF
	900
	901	!
	902	!-- Graphic output for PROFIL
	903	IF ( time_dopr >= dt_dopr ) THEN
	904	IF ( dopr_n /= 0 ) CALL data_output_profiles
	905	time_dopr = MOD( time_dopr, MAX( dt_dopr, dt_3d ) )
[1342]	906	time_dopr_av = 0.0_wp ! due to averaging (see above)
[1]	907	ENDIF
	908
	909	!
	910	!-- Graphic output for time series
	911	IF ( time_dots >= dt_dots ) THEN
[48]	912	CALL data_output_tseries
[1]	913	time_dots = MOD( time_dots, MAX( dt_dots, dt_3d ) )
	914	ENDIF
	915
	916	!
	917	!-- Output of spectra (formatted for use with PROFIL), in case of no
	918	!-- time averaging, spectra has to be calculated before
	919	IF ( time_dosp >= dt_dosp ) THEN
	920	IF ( average_count_sp == 0 ) CALL calc_spectra
	921	CALL data_output_spectra
	922	time_dosp = MOD( time_dosp, MAX( dt_dosp, dt_3d ) )
	923	ENDIF
	924
	925	!
	926	!-- 2d-data output (cross-sections)
	927	IF ( time_do2d_xy >= dt_do2d_xy ) THEN
	928	CALL data_output_2d( 'xy', 0 )
	929	time_do2d_xy = MOD( time_do2d_xy, MAX( dt_do2d_xy, dt_3d ) )
	930	ENDIF
	931	IF ( time_do2d_xz >= dt_do2d_xz ) THEN
	932	CALL data_output_2d( 'xz', 0 )
	933	time_do2d_xz = MOD( time_do2d_xz, MAX( dt_do2d_xz, dt_3d ) )
	934	ENDIF
	935	IF ( time_do2d_yz >= dt_do2d_yz ) THEN
	936	CALL data_output_2d( 'yz', 0 )
	937	time_do2d_yz = MOD( time_do2d_yz, MAX( dt_do2d_yz, dt_3d ) )
	938	ENDIF
	939
	940	!
	941	!-- 3d-data output (volume data)
	942	IF ( time_do3d >= dt_do3d ) THEN
	943	CALL data_output_3d( 0 )
	944	time_do3d = MOD( time_do3d, MAX( dt_do3d, dt_3d ) )
	945	ENDIF
	946
	947	!
[410]	948	!-- masked data output
[1308]	949	!-- Parallel netcdf output is not tested so far for masked data, hence
	950	!-- netcdf_data_format is switched back to non-paralell output.
	951	netcdf_data_format_save = netcdf_data_format
	952	IF ( netcdf_data_format == 5 ) netcdf_data_format = 3
	953	IF ( netcdf_data_format == 6 ) netcdf_data_format = 4
[410]	954	DO mid = 1, masks
	955	IF ( time_domask(mid) >= dt_domask(mid) ) THEN
	956	CALL data_output_mask( 0 )
	957	time_domask(mid) = MOD( time_domask(mid), &
	958	MAX( dt_domask(mid), dt_3d ) )
	959	ENDIF
	960	ENDDO
[1308]	961	netcdf_data_format = netcdf_data_format_save
[410]	962
	963	!
	964	!-- Output of time-averaged 2d/3d/masked data
[1]	965	IF ( time_do_av >= dt_data_output_av ) THEN
	966	CALL average_3d_data
	967	CALL data_output_2d( 'xy', 1 )
	968	CALL data_output_2d( 'xz', 1 )
	969	CALL data_output_2d( 'yz', 1 )
	970	CALL data_output_3d( 1 )
[1308]	971	!-- Parallel netcdf output is not tested so far for masked data, hence
	972	!-- netcdf_data_format is switched back to non-paralell output.
	973	netcdf_data_format_save = netcdf_data_format
	974	IF ( netcdf_data_format == 5 ) netcdf_data_format = 3
	975	IF ( netcdf_data_format == 6 ) netcdf_data_format = 4
[410]	976	DO mid = 1, masks
	977	CALL data_output_mask( 1 )
	978	ENDDO
[1308]	979	netcdf_data_format = netcdf_data_format_save
[1]	980	time_do_av = MOD( time_do_av, MAX( dt_data_output_av, dt_3d ) )
	981	ENDIF
	982
	983	!
	984	!-- Output of particle time series
[253]	985	IF ( particle_advection ) THEN
	986	IF ( time_dopts >= dt_dopts .OR. &
	987	( simulated_time >= particle_advection_start .AND. &
[849]	988	first_call_lpm ) ) THEN
[253]	989	CALL data_output_ptseries
	990	time_dopts = MOD( time_dopts, MAX( dt_dopts, dt_3d ) )
	991	ENDIF
[1]	992	ENDIF
	993
	994	!
	995	!-- Output of dvrp-graphics (isosurface, particles, slicer)
	996	#if defined( __dvrp_graphics )
	997	CALL DVRP_LOG_EVENT( -2, current_timestep_number-1 )
	998	#endif
	999	IF ( time_dvrp >= dt_dvrp ) THEN
	1000	CALL data_output_dvrp
	1001	time_dvrp = MOD( time_dvrp, MAX( dt_dvrp, dt_3d ) )
	1002	ENDIF
	1003	#if defined( __dvrp_graphics )
	1004	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
	1005	#endif
	1006
	1007	!
	1008	!-- If required, set the heat flux for the next time step at a random value
	1009	IF ( constant_heatflux .AND. random_heatflux ) CALL disturb_heatflux
	1010
	1011	!
	1012	!-- Execute user-defined actions
	1013	CALL user_actions( 'after_timestep' )
	1014
[1402]	1015	!
	1016	!-- Output elapsed simulated time in form of a progress bar on stdout
	1017	IF ( myid == 0 ) CALL output_progress_bar
	1018
[1]	1019	CALL cpu_log( log_point_s(10), 'timesteps', 'stop' )
	1020
[667]	1021
[1]	1022	ENDDO ! time loop
	1023
[1402]	1024	IF ( myid == 0 ) CALL finish_progress_bar
	1025
[1]	1026	#if defined( __dvrp_graphics )
	1027	CALL DVRP_LOG_EVENT( -2, current_timestep_number )
	1028	#endif
	1029
[1402]	1030	CALL location_message( 'finished time-stepping', .TRUE. )
[1384]	1031
[1]	1032	END SUBROUTINE time_integration

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