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nemogcm.F90 in branches/UKMO/2014_Surge_Modelling/NEMOGCM/NEMO/OPA_SRC – NEMO

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source: branches/UKMO/2014_Surge_Modelling/NEMOGCM/NEMO/OPA_SRC/nemogcm.F90 @ 4708

Last change on this file since 4708 was 4708, checked in by rfurner, 10 years ago
changes to remove tracer modules and produce barotropic model
Property svn:keywords set to `Id`
File size: 38.9 KB

Line
1	MODULE nemogcm
2	!!======================================================================
3	!! * MODULE nemogcm *
4	!! Ocean system : NEMO GCM (ocean dynamics, on-line tracers, biochemistry and sea-ice)
5	!!======================================================================
6	!! History : OPA ! 1990-10 (C. Levy, G. Madec) Original code
7	!! 7.0 ! 1991-11 (M. Imbard, C. Levy, G. Madec)
8	!! 7.1 ! 1993-03 (M. Imbard, C. Levy, G. Madec, O. Marti, M. Guyon, A. Lazar,
9	!! P. Delecluse, C. Perigaud, G. Caniaux, B. Colot, C. Maes) release 7.1
10	!! - ! 1992-06 (L.Terray) coupling implementation
11	!! - ! 1993-11 (M.A. Filiberti) IGLOO sea-ice
12	!! 8.0 ! 1996-03 (M. Imbard, C. Levy, G. Madec, O. Marti, M. Guyon, A. Lazar,
13	!! P. Delecluse, L.Terray, M.A. Filiberti, J. Vialar, A.M. Treguier, M. Levy) release 8.0
14	!! 8.1 ! 1997-06 (M. Imbard, G. Madec)
15	!! 8.2 ! 1999-11 (M. Imbard, H. Goosse) LIM sea-ice model
16	!! ! 1999-12 (V. Thierry, A-M. Treguier, M. Imbard, M-A. Foujols) OPEN-MP
17	!! ! 2000-07 (J-M Molines, M. Imbard) Open Boundary Conditions (CLIPPER)
18	!! NEMO 1.0 ! 2002-08 (G. Madec) F90: Free form and modules
19	!! - ! 2004-06 (R. Redler, NEC CCRLE, Germany) add OASIS[3/4] coupled interfaces
20	!! - ! 2004-08 (C. Talandier) New trends organization
21	!! - ! 2005-06 (C. Ethe) Add the 1D configuration possibility
22	!! - ! 2005-11 (V. Garnier) Surface pressure gradient organization
23	!! - ! 2006-03 (L. Debreu, C. Mazauric) Agrif implementation
24	!! - ! 2006-04 (G. Madec, R. Benshila) Step reorganization
25	!! - ! 2007-07 (J. Chanut, A. Sellar) Unstructured open boundaries (BDY)
26	!! 3.2 ! 2009-08 (S. Masson) open/write in the listing file in mpp
27	!! 3.3 ! 2010-05 (K. Mogensen, A. Weaver, M. Martin, D. Lea) Assimilation interface
28	!! - ! 2010-10 (C. Ethe, G. Madec) reorganisation of initialisation phase
29	!! 3.3.1! 2011-01 (A. R. Porter, STFC Daresbury) dynamical allocation
30	!! 3.4 ! 2011-11 (C. Harris) decomposition changes for running with CICE
31	!! ! 2012-05 (C. Calone, J. Simeon, G. Madec, C. Ethe) Add grid coarsening
32	!!----------------------------------------------------------------------
33
34	!!----------------------------------------------------------------------
35	!! nemo_gcm : solve ocean dynamics, tracer, biogeochemistry and/or sea-ice
36	!! nemo_init : initialization of the NEMO system
37	!! nemo_ctl : initialisation of the contol print
38	!! nemo_closefile : close remaining open files
39	!! nemo_alloc : dynamical allocation
40	!! nemo_partition : calculate MPP domain decomposition
41	!! factorise : calculate the factors of the no. of MPI processes
42	!!----------------------------------------------------------------------
43	USE step_oce ! module used in the ocean time stepping module
44	USE sbc_oce ! surface boundary condition: ocean
45	USE cla ! cross land advection (tra_cla routine)
46	USE domcfg ! domain configuration (dom_cfg routine)
47	USE mppini ! shared/distributed memory setting (mpp_init routine)
48	USE domain ! domain initialization (dom_init routine)
49	#if defined key_nemocice_decomp
50	USE ice_domain_size, only: nx_global, ny_global
51	#endif
52	USE tideini ! tidal components initialization (tide_ini routine)
53	USE bdyini ! open boundary cond. initialization (bdy_init routine)
54	USE bdydta ! open boundary cond. initialization (bdy_dta_init routine)
55	USE bdytides ! open boundary cond. initialization (bdytide_init routine)
56	USE istate ! initial state setting (istate_init routine)
57	USE ldfdyn ! lateral viscosity setting (ldfdyn_init routine)
58	USE ldftra ! lateral diffusivity setting (ldftra_init routine)
59	USE zdfini ! vertical physics setting (zdf_init routine)
60	USE phycst ! physical constant (par_cst routine)
61	USE trdmod ! momentum/tracers trends (trd_mod_init routine)
62	USE asminc ! assimilation increments
63	USE asmbkg ! writing out state trajectory
64	USE diaptr ! poleward transports (dia_ptr_init routine)
65	USE diadct ! sections transports (dia_dct_init routine)
66	USE diaobs ! Observation diagnostics (dia_obs_init routine)
67	USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined)
68	USE step ! NEMO time-stepping (stp routine)
69	USE icbini ! handle bergs, initialisation
70	USE icbstp ! handle bergs, calving, themodynamics and transport
71	#if defined key_oasis3
72	USE cpl_oasis3 ! OASIS3 coupling
73	#elif defined key_oasis4
74	USE cpl_oasis4 ! OASIS4 coupling (not working)
75	#endif
76	USE c1d ! 1D configuration
77	USE step_c1d ! Time stepping loop for the 1D configuration
78	USE dyndmp ! Momentum damping
79	#if defined key_top
80	USE trcini ! passive tracer initialisation
81	#endif
82	USE lib_mpp ! distributed memory computing
83	#if defined key_iomput
84	USE xios
85	#endif
86	USE sbctide, ONLY: lk_tide
87	USE crsini ! initialise grid coarsening utility
88	USE lbcnfd, ONLY: isendto, nsndto ! Setup of north fold exchanges
89
90	IMPLICIT NONE
91	PRIVATE
92
93	PUBLIC nemo_gcm ! called by model.F90
94	PUBLIC nemo_init ! needed by AGRIF
95	PUBLIC nemo_alloc ! needed by TAM
96
97	CHARACTER(lc) :: cform_aaa="( /, 'AAAAAAAA', / ) " ! flag for output listing
98
99	!!----------------------------------------------------------------------
100	!! NEMO/OPA 4.0 , NEMO Consortium (2011)
101	!! $Id$
102	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
103	!!----------------------------------------------------------------------
104	CONTAINS
105
106	SUBROUTINE nemo_gcm
107	!!----------------------------------------------------------------------
108	!! * ROUTINE nemo_gcm *
109	!!
110	!! ** Purpose : NEMO solves the primitive equations on an orthogonal
111	!! curvilinear mesh on the sphere.
112	!!
113	!! ** Method : - model general initialization
114	!! - launch the time-stepping (stp routine)
115	!! - finalize the run by closing files and communications
116	!!
117	!! References : Madec, Delecluse, Imbard, and Levy, 1997: internal report, IPSL.
118	!! Madec, 2008, internal report, IPSL.
119	!!----------------------------------------------------------------------
120	INTEGER :: istp ! time step index
121	!!----------------------------------------------------------------------
122	!
123
124	#if defined key_agrif
125	CALL Agrif_Init_Grids() ! AGRIF: set the meshes
126	#endif
127
128	! !-----------------------!
129	CALL nemo_init !== Initialisations ==!
130	! !-----------------------!
131	#if defined key_agrif
132	CALL Agrif_Declare_Var_dom ! AGRIF: set the meshes for DOM
133	CALL Agrif_Declare_Var ! " " " " " DYN/TRA
134	# if defined key_top
135	CALL Agrif_Declare_Var_top ! " " " " " TOP
136	# endif
137	# if defined key_lim2
138	CALL Agrif_Declare_Var_lim2 ! " " " " " LIM
139	# endif
140	#endif
141
142	! check that all process are still there... If some process have an error,
143	! they will never enter in step and other processes will wait until the end of the cpu time!
144	IF( lk_mpp ) CALL mpp_max( nstop )
145
146	IF(lwp) WRITE(numout,cform_aaa) ! Flag AAAAAAA
147
148	! !-----------------------!
149	! !== time stepping ==!
150	! !-----------------------!
151	istp = nit000
152	#if defined key_c1d
153	DO WHILE ( istp <= nitend .AND. nstop == 0 )
154	CALL stp_c1d( istp )
155	istp = istp + 1
156	END DO
157	#else
158	IF( lk_asminc ) THEN
159	IF( ln_bkgwri ) CALL asm_bkg_wri( nit000 - 1 ) ! Output background fields
160	IF( ln_asmdin ) THEN ! Direct initialization
161	IF( ln_trainc ) CALL tra_asm_inc( nit000 - 1 ) ! Tracers
162	IF( ln_dyninc ) CALL dyn_asm_inc( nit000 - 1 ) ! Dynamics
163	IF( ln_sshinc ) CALL ssh_asm_inc( nit000 - 1 ) ! SSH
164	ENDIF
165	ENDIF
166
167	DO WHILE ( istp <= nitend .AND. nstop == 0 )
168
169	#if defined key_agrif
170	CALL Agrif_Step( stp ) ! AGRIF: time stepping
171	#else
172	CALL stp( istp ) ! standard time stepping
173	#endif
174
175	istp = istp + 1
176	IF( lk_mpp ) CALL mpp_max( nstop )
177	END DO
178	#endif
179
180	IF( lk_diaobs ) CALL dia_obs_wri
181	!
182	IF( ln_icebergs ) CALL icb_end( nitend )
183
184	! !------------------------!
185	! !== finalize the run ==!
186	! !------------------------!
187	IF(lwp) WRITE(numout,cform_aaa) ! Flag AAAAAAA
188	!
189	IF( nstop /= 0 .AND. lwp ) THEN ! error print
190	WRITE(numout,cform_err)
191	WRITE(numout,*) nstop, ' error have been found'
192	ENDIF
193	!
194	#if defined key_agrif
195	CALL Agrif_ParentGrid_To_ChildGrid()
196	IF( lk_diaobs ) CALL dia_obs_wri
197	IF( nn_timing == 1 ) CALL timing_finalize
198	CALL Agrif_ChildGrid_To_ParentGrid()
199	#endif
200	IF( nn_timing == 1 ) CALL timing_finalize
201	!
202	CALL nemo_closefile
203	#if defined key_iomput
204	CALL xios_finalize ! end mpp communications with xios
205	# if defined key_oasis3 \|\| defined key_oasis4
206	CALL cpl_prism_finalize ! end coupling and mpp communications with OASIS
207	# endif
208	#else
209	# if defined key_oasis3 \|\| defined key_oasis4
210	CALL cpl_prism_finalize ! end coupling and mpp communications with OASIS
211	# else
212	IF( lk_mpp ) CALL mppstop ! end mpp communications
213	# endif
214	#endif
215	!
216	END SUBROUTINE nemo_gcm
217
218
219	SUBROUTINE nemo_init
220	!!----------------------------------------------------------------------
221	!! * ROUTINE nemo_init *
222	!!
223	!! ** Purpose : initialization of the NEMO GCM
224	!!----------------------------------------------------------------------
225	INTEGER :: ji ! dummy loop indices
226	INTEGER :: ilocal_comm ! local integer
227	INTEGER :: ios
228	CHARACTER(len=80), DIMENSION(16) :: cltxt
229	!!
230	NAMELIST/namctl/ ln_ctl, nn_print, nn_ictls, nn_ictle, &
231	& nn_isplt, nn_jsplt, nn_jctls, nn_jctle, &
232	& nn_bench, nn_timing
233	NAMELIST/namcfg/ cp_cfg, cp_cfz, jp_cfg, jpidta, jpjdta, jpkdta, jpiglo, jpjglo, &
234	& jpizoom, jpjzoom, jperio
235	!!----------------------------------------------------------------------
236	!
237	cltxt = ''
238	!
239	! ! Open reference namelist and configuration namelist files
240	CALL ctl_opn( numnam_ref, 'namelist_ref', 'OLD', 'FORMATTED', 'SEQUENTIAL', -1, 6, .FALSE. )
241	CALL ctl_opn( numnam_cfg, 'namelist_cfg', 'OLD', 'FORMATTED', 'SEQUENTIAL', -1, 6, .FALSE. )
242	!
243	REWIND( numnam_ref ) ! Namelist namctl in reference namelist : Control prints & Benchmark
244	READ ( numnam_ref, namctl, IOSTAT = ios, ERR = 901 )
245	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namctl in reference namelist', .TRUE. )
246
247	REWIND( numnam_cfg ) ! Namelist namctl in confguration namelist : Control prints & Benchmark
248	READ ( numnam_cfg, namctl, IOSTAT = ios, ERR = 902 )
249	902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namctl in configuration namelist', .TRUE. )
250
251	!
252	REWIND( numnam_ref ) ! Namelist namcfg in reference namelist : Control prints & Benchmark
253	READ ( numnam_ref, namcfg, IOSTAT = ios, ERR = 903 )
254	903 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namcfg in reference namelist', .TRUE. )
255
256	REWIND( numnam_cfg ) ! Namelist namcfg in confguration namelist : Control prints & Benchmark
257	READ ( numnam_cfg, namcfg, IOSTAT = ios, ERR = 904 )
258	904 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namcfg in configuration namelist', .TRUE. )
259
260	! Force values for AGRIF zoom (cf. agrif_user.F90)
261	#if defined key_agrif
262	IF( .NOT. Agrif_Root() ) THEN
263	jpiglo = nbcellsx + 2 + 2*nbghostcells
264	jpjglo = nbcellsy + 2 + 2*nbghostcells
265	jpi = ( jpiglo-2jpreci + (jpni-1+0) ) / jpni + 2jpreci
266	jpj = ( jpjglo-2jprecj + (jpnj-1+0) ) / jpnj + 2jprecj
267	jpidta = jpiglo
268	jpjdta = jpjglo
269	jpizoom = 1
270	jpjzoom = 1
271	nperio = 0
272	jperio = 0
273	ENDIF
274	#endif
275	!
276	! !--------------------------------------------!
277	! ! set communicator & select the local node !
278	! ! NB: mynode also opens output.namelist.dyn !
279	! ! on unit number numond on first proc !
280	! !--------------------------------------------!
281	#if defined key_iomput
282	IF( Agrif_Root() ) THEN
283	# if defined key_oasis3 \|\| defined key_oasis4
284	CALL cpl_prism_init( ilocal_comm ) ! nemo local communicator given by oasis
285	CALL xios_initialize( "oceanx",local_comm=ilocal_comm )
286	# else
287	CALL xios_initialize( "nemo",return_comm=ilocal_comm )
288	# endif
289	ENDIF
290	narea = mynode( cltxt, numnam_ref, numnam_cfg, numond , nstop, ilocal_comm ) ! Nodes selection
291	#else
292	# if defined key_oasis3 \|\| defined key_oasis4
293	IF( Agrif_Root() ) THEN
294	CALL cpl_prism_init( ilocal_comm ) ! nemo local communicator given by oasis
295	ENDIF
296	narea = mynode( cltxt, numnam_ref, numnam_cfg, numond , nstop, ilocal_comm ) ! Nodes selection (control print return in cltxt)
297	# else
298	ilocal_comm = 0
299	narea = mynode( cltxt, numnam_ref, numnam_cfg, numond , nstop ) ! Nodes selection (control print return in cltxt)
300	# endif
301	#endif
302	narea = narea + 1 ! mynode return the rank of proc (0 --> jpnij -1 )
303
304	lwm = (narea == 1) ! control of output namelists
305	lwp = (narea == 1) .OR. ln_ctl ! control of all listing output print
306
307	IF(lwm) THEN
308	! write merged namelists from earlier to output namelist now that the
309	! file has been opened in call to mynode. nammpp has already been
310	! written in mynode (if lk_mpp_mpi)
311	WRITE( numond, namctl )
312	WRITE( numond, namcfg )
313	ENDIF
314
315	! If dimensions of processor grid weren't specified in the namelist file
316	! then we calculate them here now that we have our communicator size
317	IF( (jpni < 1) .OR. (jpnj < 1) )THEN
318	#if defined key_mpp_mpi
319	IF( Agrif_Root() ) CALL nemo_partition(mppsize)
320	#else
321	jpni = 1
322	jpnj = 1
323	jpnij = jpni*jpnj
324	#endif
325	END IF
326
327	! Calculate domain dimensions given calculated jpni and jpnj
328	! This used to be done in par_oce.F90 when they were parameters rather
329	! than variables
330	IF( Agrif_Root() ) THEN
331	#if defined key_nemocice_decomp
332	jpi = ( nx_global+2-2jpreci + (jpni-1) ) / jpni + 2jpreci ! first dim.
333	jpj = ( ny_global+2-2jprecj + (jpnj-1) ) / jpnj + 2jprecj ! second dim.
334	#else
335	jpi = ( jpiglo-2jpreci + (jpni-1) ) / jpni + 2jpreci ! first dim.
336	jpj = ( jpjglo-2jprecj + (jpnj-1) ) / jpnj + 2jprecj ! second dim.
337	#endif
338	ENDIF
339	jpk = jpkdta ! third dim
340	jpim1 = jpi-1 ! inner domain indices
341	jpjm1 = jpj-1 ! " "
342	jpkm1 = jpk-1 ! " "
343	jpij = jpi*jpj ! jpi x j
344
345	IF(lwp) THEN ! open listing units
346	!
347	CALL ctl_opn( numout, 'ocean.output', 'REPLACE', 'FORMATTED', 'SEQUENTIAL', -1, 6, .FALSE., narea )
348	!
349	WRITE(numout,*)
350	WRITE(numout,*) ' CNRS - NERC - Met OFFICE - MERCATOR-ocean - INGV - CMCC'
351	WRITE(numout,*) ' NEMO team'
352	WRITE(numout,*) ' Ocean General Circulation Model'
353	WRITE(numout,*) ' version 3.4 (2011) '
354	WRITE(numout,*)
355	WRITE(numout,*)
356	DO ji = 1, SIZE(cltxt)
357	IF( TRIM(cltxt(ji)) /= '' ) WRITE(numout,*) cltxt(ji) ! control print of mynode
358	END DO
359	WRITE(numout,cform_aaa) ! Flag AAAAAAA
360	!
361	ENDIF
362
363	! Now we know the dimensions of the grid and numout has been set we can
364	! allocate arrays
365	CALL nemo_alloc()
366
367	! !-------------------------------!
368	! ! NEMO general initialization !
369	! !-------------------------------!
370
371	CALL nemo_ctl ! Control prints & Benchmark
372
373	! ! Domain decomposition
374	IF( jpni*jpnj == jpnij ) THEN ; CALL mpp_init ! standard cutting out
375	ELSE ; CALL mpp_init2 ! eliminate land processors
376	ENDIF
377	!
378	IF( nn_timing == 1 ) CALL timing_init
379	!
380	! ! General initialization
381	CALL phy_cst ! Physical constants
382	CALL eos_init ! Equation of state
383	IF( lk_c1d ) CALL c1d_init ! 1D column configuration
384	CALL dom_cfg ! Domain configuration
385	CALL dom_init ! Domain
386
387	IF( ln_nnogather ) CALL nemo_northcomms ! Initialise the northfold neighbour lists (must be done after the masks are defined)
388
389	IF( ln_ctl ) CALL prt_ctl_init ! Print control
390
391	CALL istate_init ! ocean initial state (Dynamics and tracers)
392
393	IF( lk_tide ) CALL tide_init( nit000 ) ! Initialisation of the tidal harmonics
394
395	IF( lk_bdy ) CALL bdy_init ! Open boundaries initialisation
396	IF( lk_bdy ) CALL bdy_dta_init ! Open boundaries initialisation of external data arrays
397	IF( lk_bdy .AND. lk_tide ) &
398	& CALL bdytide_init ! Open boundaries initialisation of tidal harmonic forcing
399
400	CALL dyn_nept_init ! simplified form of Neptune effect
401
402	!
403	IF( ln_crs ) CALL crs_init ! Domain initialization of coarsened grid
404	!
405	! Ocean physics
406	CALL sbc_init ! Forcings : surface module
407	! ! Vertical physics
408
409	CALL zdf_init ! namelist read
410
411	CALL zdf_bfr_init ! bottom friction
412
413	IF( lk_zdfric ) CALL zdf_ric_init ! Richardson number dependent Kz
414	IF( lk_zdftke ) CALL zdf_tke_init ! TKE closure scheme
415	IF( lk_zdfgls ) CALL zdf_gls_init ! GLS closure scheme
416	IF( lk_zdfkpp ) CALL zdf_kpp_init ! KPP closure scheme
417	IF( lk_zdftmx ) CALL zdf_tmx_init ! tidal vertical mixing
418	IF( lk_zdfddm .AND. .NOT. lk_zdfkpp ) &
419	& CALL zdf_ddm_init ! double diffusive mixing
420	! ! Lateral physics
421	#if ! defined key_surge
422	CALL ldf_tra_init ! Lateral ocean tracer physics
423	#endif
424	CALL ldf_dyn_init ! Lateral ocean momentum physics
425	IF( lk_ldfslp ) CALL ldf_slp_init ! slope of lateral mixing
426
427	#if ! defined key_surge
428	! ! Active tracers
429	CALL tra_qsr_init ! penetrative solar radiation qsr
430	CALL tra_bbc_init ! bottom heat flux
431	IF( lk_trabbl ) CALL tra_bbl_init ! advective (and/or diffusive) bottom boundary layer scheme
432	CALL tra_dmp_init ! internal damping trends- tracers
433	CALL tra_adv_init ! horizontal & vertical advection
434	CALL tra_ldf_init ! lateral mixing
435	CALL tra_zdf_init ! vertical mixing and after tracer fields
436	#endif
437
438	! ! Dynamics
439	IF( lk_c1d ) CALL dyn_dmp_init ! internal damping trends- momentum
440	CALL dyn_adv_init ! advection (vector or flux form)
441	CALL dyn_vor_init ! vorticity term including Coriolis
442	CALL dyn_ldf_init ! lateral mixing
443	CALL dyn_hpg_init ! horizontal gradient of Hydrostatic pressure
444	CALL dyn_zdf_init ! vertical diffusion
445	CALL dyn_spg_init ! surface pressure gradient
446
447	! ! Misc. options
448	IF( nn_cla == 1 .AND. cp_cfg == 'orca' .AND. jp_cfg == 2 ) CALL cla_init ! Cross Land Advection
449	CALL icb_init( rdt, nit000) ! initialise icebergs instance
450
451	#if defined key_top
452	! ! Passive tracers
453	CALL trc_init
454	#endif
455	!
456
457	! Diagnostics
458	IF( lk_floats ) CALL flo_init ! drifting Floats
459	IF( lk_diaar5 ) CALL dia_ar5_init ! ar5 diag
460	CALL dia_ptr_init ! Poleward TRansports initialization
461	IF( lk_diadct ) CALL dia_dct_init ! Sections tranports
462	CALL dia_hsb_init ! heat content, salt content and volume budgets
463	CALL trd_mod_init ! Mixed-layer/Vorticity/Integral constraints trends
464	IF( lk_diaobs ) THEN ! Observation & model comparison
465	CALL dia_obs_init ! Initialize observational data
466	CALL dia_obs( nit000 - 1 ) ! Observation operator for restart
467	ENDIF
468	! ! Assimilation increments
469	IF( lk_asminc ) CALL asm_inc_init ! Initialize assimilation increments
470	IF(lwp) WRITE(numout,*) 'Euler time step switch is ', neuler
471	!
472	END SUBROUTINE nemo_init
473
474
475	SUBROUTINE nemo_ctl
476	!!----------------------------------------------------------------------
477	!! * ROUTINE nemo_ctl *
478	!!
479	!! ** Purpose : control print setting
480	!!
481	!! ** Method : - print namctl information and check some consistencies
482	!!----------------------------------------------------------------------
483	!
484	IF(lwp) THEN ! control print
485	WRITE(numout,*)
486	WRITE(numout,*) 'nemo_ctl: Control prints & Benchmark'
487	WRITE(numout,*) '~~~~~~~ '
488	WRITE(numout,*) ' Namelist namctl'
489	WRITE(numout,*) ' run control (for debugging) ln_ctl = ', ln_ctl
490	WRITE(numout,*) ' level of print nn_print = ', nn_print
491	WRITE(numout,*) ' Start i indice for SUM control nn_ictls = ', nn_ictls
492	WRITE(numout,*) ' End i indice for SUM control nn_ictle = ', nn_ictle
493	WRITE(numout,*) ' Start j indice for SUM control nn_jctls = ', nn_jctls
494	WRITE(numout,*) ' End j indice for SUM control nn_jctle = ', nn_jctle
495	WRITE(numout,*) ' number of proc. following i nn_isplt = ', nn_isplt
496	WRITE(numout,*) ' number of proc. following j nn_jsplt = ', nn_jsplt
497	WRITE(numout,*) ' benchmark parameter (0/1) nn_bench = ', nn_bench
498	WRITE(numout,*) ' timing activated (0/1) nn_timing = ', nn_timing
499	ENDIF
500	!
501	nprint = nn_print ! convert DOCTOR namelist names into OLD names
502	nictls = nn_ictls
503	nictle = nn_ictle
504	njctls = nn_jctls
505	njctle = nn_jctle
506	isplt = nn_isplt
507	jsplt = nn_jsplt
508	nbench = nn_bench
509
510	IF(lwp) THEN ! control print
511	WRITE(numout,*)
512	WRITE(numout,*) 'namcfg : configuration initialization through namelist read'
513	WRITE(numout,*) '~~~~~~~ '
514	WRITE(numout,*) ' Namelist namcfg'
515	WRITE(numout,*) ' configuration name cp_cfg = ', TRIM(cp_cfg)
516	WRITE(numout,*) ' configuration zoom name cp_cfz = ', TRIM(cp_cfz)
517	WRITE(numout,*) ' configuration resolution jp_cfg = ', jp_cfg
518	WRITE(numout,*) ' 1st lateral dimension ( >= jpi ) jpidta = ', jpidta
519	WRITE(numout,*) ' 2nd " " ( >= jpj ) jpjdta = ', jpjdta
520	WRITE(numout,*) ' 3nd " " jpkdta = ', jpkdta
521	WRITE(numout,*) ' 1st dimension of global domain in i jpiglo = ', jpiglo
522	WRITE(numout,*) ' 2nd - - in j jpjglo = ', jpjglo
523	WRITE(numout,*) ' left bottom i index of the zoom (in data domain) jpizoom = ', jpizoom
524	WRITE(numout,*) ' left bottom j index of the zoom (in data domain) jpizoom = ', jpjzoom
525	WRITE(numout,*) ' lateral cond. type (between 0 and 6) jperio = ', jperio
526	ENDIF
527	! ! Parameter control
528	!
529	IF( ln_ctl ) THEN ! sub-domain area indices for the control prints
530	IF( lk_mpp .AND. jpnij > 1 ) THEN
531	isplt = jpni ; jsplt = jpnj ; ijsplt = jpni*jpnj ! the domain is forced to the real split domain
532	ELSE
533	IF( isplt == 1 .AND. jsplt == 1 ) THEN
534	CALL ctl_warn( ' - isplt & jsplt are equal to 1', &
535	& ' - the print control will be done over the whole domain' )
536	ENDIF
537	ijsplt = isplt * jsplt ! total number of processors ijsplt
538	ENDIF
539	IF(lwp) WRITE(numout,*)' - The total number of processors over which the'
540	IF(lwp) WRITE(numout,*)' print control will be done is ijsplt : ', ijsplt
541	!
542	! ! indices used for the SUM control
543	IF( nictls+nictle+njctls+njctle == 0 ) THEN ! print control done over the default area
544	lsp_area = .FALSE.
545	ELSE ! print control done over a specific area
546	lsp_area = .TRUE.
547	IF( nictls < 1 .OR. nictls > jpiglo ) THEN
548	CALL ctl_warn( ' - nictls must be 1<=nictls>=jpiglo, it is forced to 1' )
549	nictls = 1
550	ENDIF
551	IF( nictle < 1 .OR. nictle > jpiglo ) THEN
552	CALL ctl_warn( ' - nictle must be 1<=nictle>=jpiglo, it is forced to jpiglo' )
553	nictle = jpiglo
554	ENDIF
555	IF( njctls < 1 .OR. njctls > jpjglo ) THEN
556	CALL ctl_warn( ' - njctls must be 1<=njctls>=jpjglo, it is forced to 1' )
557	njctls = 1
558	ENDIF
559	IF( njctle < 1 .OR. njctle > jpjglo ) THEN
560	CALL ctl_warn( ' - njctle must be 1<=njctle>=jpjglo, it is forced to jpjglo' )
561	njctle = jpjglo
562	ENDIF
563	ENDIF
564	ENDIF
565	!
566	IF( nbench == 1 ) THEN ! Benchmark
567	SELECT CASE ( cp_cfg )
568	CASE ( 'gyre' ) ; CALL ctl_warn( ' The Benchmark is activated ' )
569	CASE DEFAULT ; CALL ctl_stop( ' The Benchmark is based on the GYRE configuration:', &
570	& ' cp_cfg = "gyre" in namelist &namcfg or set nbench = 0' )
571	END SELECT
572	ENDIF
573	!
574	IF( lk_c1d .AND. .NOT.lk_iomput ) CALL ctl_stop( 'nemo_ctl: The 1D configuration must be used ', &
575	& 'with the IOM Input/Output manager. ' , &
576	& 'Compile with key_iomput enabled' )
577	!
578	IF( 1_wp /= SIGN(1._wp,-0._wp) ) CALL ctl_stop( 'nemo_ctl: The intrinsec SIGN function follows ', &
579	& 'f2003 standard. ' , &
580	& 'Compile with key_nosignedzero enabled' )
581	!
582	END SUBROUTINE nemo_ctl
583
584
585	SUBROUTINE nemo_closefile
586	!!----------------------------------------------------------------------
587	!! * ROUTINE nemo_closefile *
588	!!
589	!! ** Purpose : Close the files
590	!!----------------------------------------------------------------------
591	!
592	IF( lk_mpp ) CALL mppsync
593	!
594	CALL iom_close ! close all input/output files managed by iom_*
595	!
596	IF( numstp /= -1 ) CLOSE( numstp ) ! time-step file
597	IF( numsol /= -1 ) CLOSE( numsol ) ! solver file
598	IF( numnam_ref /= -1 ) CLOSE( numnam_ref ) ! oce reference namelist
599	IF( numnam_cfg /= -1 ) CLOSE( numnam_cfg ) ! oce configuration namelist
600	IF( lwm.AND.numond /= -1 ) CLOSE( numond ) ! oce output namelist
601	IF( numnam_ice_ref /= -1 ) CLOSE( numnam_ice_ref ) ! ice reference namelist
602	IF( numnam_ice_cfg /= -1 ) CLOSE( numnam_ice_cfg ) ! ice configuration namelist
603	IF( lwm.AND.numoni /= -1 ) CLOSE( numoni ) ! ice output namelist
604	IF( numevo_ice /= -1 ) CLOSE( numevo_ice ) ! ice variables (temp. evolution)
605	IF( numout /= 6 ) CLOSE( numout ) ! standard model output file
606	IF( numdct_vol /= -1 ) CLOSE( numdct_vol ) ! volume transports
607	IF( numdct_heat /= -1 ) CLOSE( numdct_heat ) ! heat transports
608	IF( numdct_salt /= -1 ) CLOSE( numdct_salt ) ! salt transports
609
610	!
611	numout = 6 ! redefine numout in case it is used after this point...
612	!
613	END SUBROUTINE nemo_closefile
614
615
616	SUBROUTINE nemo_alloc
617	!!----------------------------------------------------------------------
618	!! * ROUTINE nemo_alloc *
619	!!
620	!! ** Purpose : Allocate all the dynamic arrays of the OPA modules
621	!!
622	!! ** Method :
623	!!----------------------------------------------------------------------
624	USE diawri , ONLY: dia_wri_alloc
625	USE dom_oce , ONLY: dom_oce_alloc
626	USE ldfdyn_oce, ONLY: ldfdyn_oce_alloc
627	USE ldftra_oce, ONLY: ldftra_oce_alloc
628	USE trc_oce , ONLY: trc_oce_alloc
629	#if defined key_diadct
630	USE diadct , ONLY: diadct_alloc
631	#endif
632	#if defined key_bdy
633	USE bdy_oce , ONLY: bdy_oce_alloc
634	#endif
635	!
636	INTEGER :: ierr
637	!!----------------------------------------------------------------------
638	!
639	ierr = oce_alloc () ! ocean
640	ierr = ierr + dia_wri_alloc ()
641	ierr = ierr + dom_oce_alloc () ! ocean domain
642	ierr = ierr + ldfdyn_oce_alloc() ! ocean lateral physics : dynamics
643	ierr = ierr + ldftra_oce_alloc() ! ocean lateral physics : tracers
644	ierr = ierr + zdf_oce_alloc () ! ocean vertical physics
645	!
646	ierr = ierr + trc_oce_alloc () ! shared TRC / TRA arrays
647	!
648	#if defined key_diadct
649	ierr = ierr + diadct_alloc () !
650	#endif
651	#if defined key_bdy
652	ierr = ierr + bdy_oce_alloc () ! bdy masks (incl. initialization)
653	#endif
654	!
655	IF( lk_mpp ) CALL mpp_sum( ierr )
656	IF( ierr /= 0 ) CALL ctl_stop( 'STOP', 'nemo_alloc : unable to allocate standard ocean arrays' )
657	!
658	END SUBROUTINE nemo_alloc
659
660
661	SUBROUTINE nemo_partition( num_pes )
662	!!----------------------------------------------------------------------
663	!! * ROUTINE nemo_partition *
664	!!
665	!! ** Purpose :
666	!!
667	!! ** Method :
668	!!----------------------------------------------------------------------
669	INTEGER, INTENT(in) :: num_pes ! The number of MPI processes we have
670	!
671	INTEGER, PARAMETER :: nfactmax = 20
672	INTEGER :: nfact ! The no. of factors returned
673	INTEGER :: ierr ! Error flag
674	INTEGER :: ji
675	INTEGER :: idiff, mindiff, imin ! For choosing pair of factors that are closest in value
676	INTEGER, DIMENSION(nfactmax) :: ifact ! Array of factors
677	!!----------------------------------------------------------------------
678
679	ierr = 0
680
681	CALL factorise( ifact, nfactmax, nfact, num_pes, ierr )
682
683	IF( nfact <= 1 ) THEN
684	WRITE (numout, *) 'WARNING: factorisation of number of PEs failed'
685	WRITE (numout, *) ' : using grid of ',num_pes,' x 1'
686	jpnj = 1
687	jpni = num_pes
688	ELSE
689	! Search through factors for the pair that are closest in value
690	mindiff = 1000000
691	imin = 1
692	DO ji = 1, nfact-1, 2
693	idiff = ABS( ifact(ji) - ifact(ji+1) )
694	IF( idiff < mindiff ) THEN
695	mindiff = idiff
696	imin = ji
697	ENDIF
698	END DO
699	jpnj = ifact(imin)
700	jpni = ifact(imin + 1)
701	ENDIF
702	!
703	jpnij = jpni*jpnj
704	!
705	END SUBROUTINE nemo_partition
706
707
708	SUBROUTINE factorise( kfax, kmaxfax, knfax, kn, kerr )
709	!!----------------------------------------------------------------------
710	!! * ROUTINE factorise *
711	!!
712	!! ** Purpose : return the prime factors of n.
713	!! knfax factors are returned in array kfax which is of
714	!! maximum dimension kmaxfax.
715	!! ** Method :
716	!!----------------------------------------------------------------------
717	INTEGER , INTENT(in ) :: kn, kmaxfax
718	INTEGER , INTENT( out) :: kerr, knfax
719	INTEGER, DIMENSION(kmaxfax), INTENT( out) :: kfax
720	!
721	INTEGER :: ifac, jl, inu
722	INTEGER, PARAMETER :: ntest = 14
723	INTEGER :: ilfax(ntest)
724
725	! lfax contains the set of allowed factors.
726	data (ilfax(jl),jl=1,ntest) / 16384, 8192, 4096, 2048, 1024, 512, 256, &
727	& 128, 64, 32, 16, 8, 4, 2 /
728	!!----------------------------------------------------------------------
729
730	! Clear the error flag and initialise output vars
731	kerr = 0
732	kfax = 1
733	knfax = 0
734
735	! Find the factors of n.
736	IF( kn == 1 ) GOTO 20
737
738	! nu holds the unfactorised part of the number.
739	! knfax holds the number of factors found.
740	! l points to the allowed factor list.
741	! ifac holds the current factor.
742
743	inu = kn
744	knfax = 0
745
746	DO jl = ntest, 1, -1
747	!
748	ifac = ilfax(jl)
749	IF( ifac > inu ) CYCLE
750
751	! Test whether the factor will divide.
752
753	IF( MOD(inu,ifac) == 0 ) THEN
754	!
755	knfax = knfax + 1 ! Add the factor to the list
756	IF( knfax > kmaxfax ) THEN
757	kerr = 6
758	write (,) 'FACTOR: insufficient space in factor array ', knfax
759	return
760	ENDIF
761	kfax(knfax) = ifac
762	! Store the other factor that goes with this one
763	knfax = knfax + 1
764	kfax(knfax) = inu / ifac
765	!WRITE (,) 'ARPDBG, factors ',knfax-1,' & ',knfax,' are ', kfax(knfax-1),' and ',kfax(knfax)
766	ENDIF
767	!
768	END DO
769
770	20 CONTINUE ! Label 20 is the exit point from the factor search loop.
771	!
772	END SUBROUTINE factorise
773
774	#if defined key_mpp_mpi
775	SUBROUTINE nemo_northcomms
776	!!======================================================================
777	!! * ROUTINE nemo_northcomms *
778	!! nemo_northcomms : Setup for north fold exchanges with explicit
779	!! point-to-point messaging
780	!!=====================================================================
781	!!----------------------------------------------------------------------
782	!!
783	!! ** Purpose : Initialization of the northern neighbours lists.
784	!!----------------------------------------------------------------------
785	!! 1.0 ! 2011-10 (A. C. Coward, NOCS & J. Donners, PRACE)
786	!! 2.0 ! 2013-06 Setup avoiding MPI communication (I. Epicoco, S. Mocavero, CMCC)
787	!!----------------------------------------------------------------------
788
789	INTEGER :: sxM, dxM, sxT, dxT, jn
790	INTEGER :: njmppmax
791
792	njmppmax = MAXVAL( njmppt )
793
794	!initializes the north-fold communication variables
795	isendto(:) = 0
796	nsndto = 0
797
798	!if I am a process in the north
799	IF ( njmpp == njmppmax ) THEN
800	!sxM is the first point (in the global domain) needed to compute the
801	!north-fold for the current process
802	sxM = jpiglo - nimppt(narea) - nlcit(narea) + 1
803	!dxM is the last point (in the global domain) needed to compute the
804	!north-fold for the current process
805	dxM = jpiglo - nimppt(narea) + 2
806
807	!loop over the other north-fold processes to find the processes
808	!managing the points belonging to the sxT-dxT range
809	DO jn = jpnij - jpni +1, jpnij
810	IF ( njmppt(jn) == njmppmax ) THEN
811	!sxT is the first point (in the global domain) of the jn
812	!process
813	sxT = nimppt(jn)
814	!dxT is the last point (in the global domain) of the jn
815	!process
816	dxT = nimppt(jn) + nlcit(jn) - 1
817	IF ((sxM .gt. sxT) .AND. (sxM .lt. dxT)) THEN
818	nsndto = nsndto + 1
819	isendto(nsndto) = jn
820	ELSEIF ((sxM .le. sxT) .AND. (dxM .ge. dxT)) THEN
821	nsndto = nsndto + 1
822	isendto(nsndto) = jn
823	ELSEIF ((dxM .lt. dxT) .AND. (sxT .lt. dxM)) THEN
824	nsndto = nsndto + 1
825	isendto(nsndto) = jn
826	END IF
827	END IF
828	END DO
829	ENDIF
830	l_north_nogather = .TRUE.
831	END SUBROUTINE nemo_northcomms
832	#else
833	SUBROUTINE nemo_northcomms ! Dummy routine
834	WRITE(,) 'nemo_northcomms: You should not have seen this print! error?'
835	END SUBROUTINE nemo_northcomms
836	#endif
837	!!======================================================================
838	END MODULE nemogcm
839
840

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