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nemogcm.F90 in branches/UKMO/AMM15_v3_6_STABLE_package_collate/NEMOGCM/NEMO/OPA_SRC – NEMO

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source: branches/UKMO/AMM15_v3_6_STABLE_package_collate/NEMOGCM/NEMO/OPA_SRC/nemogcm.F90 @ 11277

Last change on this file since 11277 was 11277, checked in by kingr, 5 years ago
Merged Juan's changes for running AMM15 woth wave coupling. Corrected minor logic error to allow AMM7-uncoupled to reproduce earlier results. Few line spacing changes to allow merging with OBS br and trunk rvn 5518.
File size: 41.4 KB

Rev	Line
[2496]	1	MODULE nemogcm
[2442]	2	!!======================================================================
[2496]	3	!! * MODULE nemogcm *
	4	!! Ocean system : NEMO GCM (ocean dynamics, on-line tracers, biochemistry and sea-ice)
[2442]	5	!!======================================================================
[1593]	6	!! History : OPA ! 1990-10 (C. Levy, G. Madec) Original code
	7	!! 7.0 ! 1991-11 (M. Imbard, C. Levy, G. Madec)
[3764]	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
[1593]	10	!! - ! 1992-06 (L.Terray) coupling implementation
[3764]	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,
[2104]	13	!! P. Delecluse, L.Terray, M.A. Filiberti, J. Vialar, A.M. Treguier, M. Levy) release 8.0
[1593]	14	!! 8.1 ! 1997-06 (M. Imbard, G. Madec)
[3764]	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
[1593]	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
[3764]	27	!! 3.3 ! 2010-05 (K. Mogensen, A. Weaver, M. Martin, D. Lea) Assimilation interface
[2236]	28	!! - ! 2010-10 (C. Ethe, G. Madec) reorganisation of initialisation phase
[3294]	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
[4152]	31	!! ! 2012-05 (C. Calone, J. Simeon, G. Madec, C. Ethe) Add grid coarsening
[1593]	32	!!----------------------------------------------------------------------
[3]	33
	34	!!----------------------------------------------------------------------
[2496]	35	!! nemo_gcm : solve ocean dynamics, tracer, biogeochemistry and/or sea-ice
	36	!! nemo_init : initialization of the NEMO system
[3764]	37	!! nemo_ctl : initialisation of the contol print
[2496]	38	!! nemo_closefile : close remaining open files
[2715]	39	!! nemo_alloc : dynamical allocation
	40	!! nemo_partition : calculate MPP domain decomposition
	41	!! factorise : calculate the factors of the no. of MPI processes
[3]	42	!!----------------------------------------------------------------------
[2382]	43	USE step_oce ! module used in the ocean time stepping module
[2392]	44	USE cla ! cross land advection (tra_cla routine)
[3]	45	USE domcfg ! domain configuration (dom_cfg routine)
	46	USE mppini ! shared/distributed memory setting (mpp_init routine)
	47	USE domain ! domain initialization (dom_init routine)
[3625]	48	#if defined key_nemocice_decomp
	49	USE ice_domain_size, only: nx_global, ny_global
	50	#endif
[3651]	51	USE tideini ! tidal components initialization (tide_ini routine)
[4990]	52	USE bdyini ! open boundary cond. setting (bdy_init routine)
	53	USE bdydta ! open boundary cond. setting (bdy_dta_init routine)
	54	USE bdytides ! open boundary cond. setting (bdytide_init routine)
[3]	55	USE istate ! initial state setting (istate_init routine)
	56	USE ldfdyn ! lateral viscosity setting (ldfdyn_init routine)
	57	USE ldftra ! lateral diffusivity setting (ldftra_init routine)
[2392]	58	USE zdfini ! vertical physics setting (zdf_init routine)
[3]	59	USE phycst ! physical constant (par_cst routine)
[4990]	60	USE trdini ! dyn/tra trends initialization (trd_init routine)
[3768]	61	USE asminc ! assimilation increments
	62	USE asmbkg ! writing out state trajectory
[10728]	63	USE asmbgc ! biogeochemical assimilation increments
[2236]	64	USE diaptr ! poleward transports (dia_ptr_init routine)
[3294]	65	USE diadct ! sections transports (dia_dct_init routine)
[2236]	66	USE diaobs ! Observation diagnostics (dia_obs_init routine)
[3764]	67	USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined)
[2496]	68	USE step ! NEMO time-stepping (stp routine)
[3609]	69	USE icbini ! handle bergs, initialisation
	70	USE icbstp ! handle bergs, calving, themodynamics and transport
[11277]	71	USE sbccpl
[1359]	72	USE cpl_oasis3 ! OASIS3 coupling
[900]	73	USE c1d ! 1D configuration
	74	USE step_c1d ! Time stepping loop for the 1D configuration
[4245]	75	USE dyndmp ! Momentum damping
[1594]	76	#if defined key_top
[1593]	77	USE trcini ! passive tracer initialisation
[1594]	78	#endif
[1593]	79	USE lib_mpp ! distributed memory computing
[1412]	80	#if defined key_iomput
[3701]	81	USE xios
[1359]	82	#endif
[3651]	83	USE sbctide, ONLY: lk_tide
[4152]	84	USE crsini ! initialise grid coarsening utility
[4671]	85	USE lbcnfd, ONLY: isendto, nsndto, nfsloop, nfeloop ! Setup of north fold exchanges
[5407]	86	USE sbc_oce, ONLY: lk_oasis
[5329]	87	USE stopar
	88	USE stopts
[8059]	89	USE diatmb ! Top,middle,bottom output
	90	USE dia25h ! 25h mean output
[8561]	91	USE diaopfoam ! FOAM operational output
	92	USE diurnal_bulk ! diurnal bulk SST
[268]	93
[2715]	94	IMPLICIT NONE
[3]	95	PRIVATE
	96
[2496]	97	PUBLIC nemo_gcm ! called by model.F90
	98	PUBLIC nemo_init ! needed by AGRIF
[3764]	99	PUBLIC nemo_alloc ! needed by TAM
[467]	100
[2498]	101	CHARACTER(lc) :: cform_aaa="( /, 'AAAAAAAA', / ) " ! flag for output listing
[1593]	102
[3]	103	!!----------------------------------------------------------------------
[2715]	104	!! NEMO/OPA 4.0 , NEMO Consortium (2011)
[2392]	105	!! $Id$
[2329]	106	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
[3]	107	!!----------------------------------------------------------------------
	108	CONTAINS
	109
[2496]	110	SUBROUTINE nemo_gcm
[3]	111	!!----------------------------------------------------------------------
[2496]	112	!! * ROUTINE nemo_gcm *
[3]	113	!!
[3764]	114	!! ** Purpose : NEMO solves the primitive equations on an orthogonal
[1593]	115	!! curvilinear mesh on the sphere.
[3]	116	!!
	117	!! ** Method : - model general initialization
	118	!! - launch the time-stepping (stp routine)
[1593]	119	!! - finalize the run by closing files and communications
[3]	120	!!
[2715]	121	!! References : Madec, Delecluse, Imbard, and Levy, 1997: internal report, IPSL.
[1593]	122	!! Madec, 2008, internal report, IPSL.
[3]	123	!!----------------------------------------------------------------------
	124	INTEGER :: istp ! time step index
[389]	125	!!----------------------------------------------------------------------
[2382]	126	!
[392]	127	#if defined key_agrif
[1593]	128	CALL Agrif_Init_Grids() ! AGRIF: set the meshes
[389]	129	#endif
	130
[1593]	131	! !-----------------------!
[2496]	132	CALL nemo_init !== Initialisations ==!
[1593]	133	! !-----------------------!
[2715]	134	#if defined key_agrif
[3680]	135	CALL Agrif_Declare_Var_dom ! AGRIF: set the meshes for DOM
	136	CALL Agrif_Declare_Var ! " " " " " DYN/TRA
[2715]	137	# if defined key_top
[3680]	138	CALL Agrif_Declare_Var_top ! " " " " " TOP
[2715]	139	# endif
[3680]	140	# if defined key_lim2
	141	CALL Agrif_Declare_Var_lim2 ! " " " " " LIM
	142	# endif
[2715]	143	#endif
[682]	144	! check that all process are still there... If some process have an error,
	145	! they will never enter in step and other processes will wait until the end of the cpu time!
[900]	146	IF( lk_mpp ) CALL mpp_max( nstop )
[682]	147
[1593]	148	IF(lwp) WRITE(numout,cform_aaa) ! Flag AAAAAAA
	149
	150	! !-----------------------!
	151	! !== time stepping ==!
	152	! !-----------------------!
[900]	153	istp = nit000
[2236]	154	#if defined key_c1d
[389]	155	DO WHILE ( istp <= nitend .AND. nstop == 0 )
[900]	156	CALL stp_c1d( istp )
[389]	157	istp = istp + 1
	158	END DO
[2236]	159	#else
	160	IF( lk_asminc ) THEN
	161	IF( ln_bkgwri ) CALL asm_bkg_wri( nit000 - 1 ) ! Output background fields
	162	IF( ln_asmdin ) THEN ! Direct initialization
	163	IF( ln_trainc ) CALL tra_asm_inc( nit000 - 1 ) ! Tracers
[3764]	164	IF( ln_dyninc ) CALL dyn_asm_inc( nit000 - 1 ) ! Dynamics
[2236]	165	IF( ln_sshinc ) CALL ssh_asm_inc( nit000 - 1 ) ! SSH
[10728]	166	IF( lk_bgcinc ) CALL bgc_asm_inc( nit000 - 1 ) ! BGC
[2236]	167	ENDIF
	168	ENDIF
[3764]	169
[6204]	170	#if defined key_agrif
	171	CALL Agrif_Regrid()
	172	#endif
	173
[389]	174	DO WHILE ( istp <= nitend .AND. nstop == 0 )
[392]	175	#if defined key_agrif
[6204]	176	CALL stp ! AGRIF: time stepping
[389]	177	#else
[11277]	178	IF (lk_oasis) CALL sbc_cpl_snd( istp ) ! Coupling to atmos
	179	CALL stp( istp )
	180	! We don't couple on the final timestep because
	181	! our restart file has already been written
	182	! and contains all the necessary data for a
	183	! restart. sbc_cpl_snd could be called here
	184	! but it would require
	185	! a) A test to ensure it was not performed
	186	! on the very last time-step
	187	! b) the presence of another call to
	188	! sbc_cpl_snd call prior to the main DO loop
	189	! This solution produces identical results
	190	! with fewer lines of code.
[389]	191	#endif
	192	istp = istp + 1
[900]	193	IF( lk_mpp ) CALL mpp_max( nstop )
[389]	194	END DO
[2236]	195	#endif
	196
[3609]	197	IF( lk_diaobs ) CALL dia_obs_wri
	198	!
[10728]	199	IF( ( lk_asminc ).AND.( ln_balwri ) ) CALL asm_bgc_bal_wri( nitend ) ! Output balancing increments
	200	!
[3609]	201	IF( ln_icebergs ) CALL icb_end( nitend )
[3764]	202
[1593]	203	! !------------------------!
	204	! !== finalize the run ==!
	205	! !------------------------!
	206	IF(lwp) WRITE(numout,cform_aaa) ! Flag AAAAAAA
	207	!
	208	IF( nstop /= 0 .AND. lwp ) THEN ! error print
[682]	209	WRITE(numout,cform_err)
[3764]	210	WRITE(numout,*) nstop, ' error have been found'
[389]	211	ENDIF
[1593]	212	!
[3294]	213	#if defined key_agrif
[6204]	214	IF( .NOT. Agrif_Root() ) THEN
[5531]	215	CALL Agrif_ParentGrid_To_ChildGrid()
	216	IF( lk_diaobs ) CALL dia_obs_wri
	217	IF( nn_timing == 1 ) CALL timing_finalize
	218	CALL Agrif_ChildGrid_To_ParentGrid()
	219	ENDIF
[3294]	220	#endif
	221	IF( nn_timing == 1 ) CALL timing_finalize
	222	!
[2496]	223	CALL nemo_closefile
[4990]	224	!
[3769]	225	#if defined key_iomput
	226	CALL xios_finalize ! end mpp communications with xios
[5407]	227	IF( lk_oasis ) CALL cpl_finalize ! end coupling and mpp communications with OASIS
[532]	228	#else
[5407]	229	IF( lk_oasis ) THEN
[4990]	230	CALL cpl_finalize ! end coupling and mpp communications with OASIS
	231	ELSE
	232	IF( lk_mpp ) CALL mppstop ! end mpp communications
	233	ENDIF
[532]	234	#endif
[900]	235	!
[2496]	236	END SUBROUTINE nemo_gcm
[389]	237
	238
[2496]	239	SUBROUTINE nemo_init
[389]	240	!!----------------------------------------------------------------------
[2496]	241	!! * ROUTINE nemo_init *
[389]	242	!!
[2496]	243	!! ** Purpose : initialization of the NEMO GCM
[389]	244	!!----------------------------------------------------------------------
[2715]	245	INTEGER :: ji ! dummy loop indices
	246	INTEGER :: ilocal_comm ! local integer
[4147]	247	INTEGER :: ios
[2715]	248	CHARACTER(len=80), DIMENSION(16) :: cltxt
[4990]	249	!
	250	NAMELIST/namctl/ ln_ctl , nn_print, nn_ictls, nn_ictle, &
[3294]	251	& nn_isplt, nn_jsplt, nn_jctls, nn_jctle, &
	252	& nn_bench, nn_timing
[4147]	253	NAMELIST/namcfg/ cp_cfg, cp_cfz, jp_cfg, jpidta, jpjdta, jpkdta, jpiglo, jpjglo, &
[5118]	254	& jpizoom, jpjzoom, jperio, ln_use_jattr
[3]	255	!!----------------------------------------------------------------------
[1593]	256	!
[2496]	257	cltxt = ''
[5407]	258	cxios_context = 'nemo'
[2496]	259	!
[4147]	260	! ! Open reference namelist and configuration namelist files
	261	CALL ctl_opn( numnam_ref, 'namelist_ref', 'OLD', 'FORMATTED', 'SEQUENTIAL', -1, 6, .FALSE. )
	262	CALL ctl_opn( numnam_cfg, 'namelist_cfg', 'OLD', 'FORMATTED', 'SEQUENTIAL', -1, 6, .FALSE. )
[1593]	263	!
[4147]	264	REWIND( numnam_ref ) ! Namelist namctl in reference namelist : Control prints & Benchmark
	265	READ ( numnam_ref, namctl, IOSTAT = ios, ERR = 901 )
[4289]	266	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namctl in reference namelist', .TRUE. )
[4147]	267
	268	REWIND( numnam_cfg ) ! Namelist namctl in confguration namelist : Control prints & Benchmark
	269	READ ( numnam_cfg, namctl, IOSTAT = ios, ERR = 902 )
[4289]	270	902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namctl in configuration namelist', .TRUE. )
[4147]	271
[1593]	272	!
[4147]	273	REWIND( numnam_ref ) ! Namelist namcfg in reference namelist : Control prints & Benchmark
	274	READ ( numnam_ref, namcfg, IOSTAT = ios, ERR = 903 )
[4289]	275	903 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namcfg in reference namelist', .TRUE. )
[4147]	276
	277	REWIND( numnam_cfg ) ! Namelist namcfg in confguration namelist : Control prints & Benchmark
	278	READ ( numnam_cfg, namcfg, IOSTAT = ios, ERR = 904 )
[4289]	279	904 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namcfg in configuration namelist', .TRUE. )
[4309]	280
[4147]	281	! Force values for AGRIF zoom (cf. agrif_user.F90)
	282	#if defined key_agrif
	283	IF( .NOT. Agrif_Root() ) THEN
	284	jpiglo = nbcellsx + 2 + 2*nbghostcells
	285	jpjglo = nbcellsy + 2 + 2*nbghostcells
	286	jpi = ( jpiglo-2jpreci + (jpni-1+0) ) / jpni + 2jpreci
	287	jpj = ( jpjglo-2jprecj + (jpnj-1+0) ) / jpnj + 2jprecj
	288	jpidta = jpiglo
	289	jpjdta = jpjglo
	290	jpizoom = 1
	291	jpjzoom = 1
	292	nperio = 0
	293	jperio = 0
[5118]	294	ln_use_jattr = .false.
[4147]	295	ENDIF
	296	#endif
	297	!
[1593]	298	! !--------------------------------------------!
	299	! ! set communicator & select the local node !
[4624]	300	! ! NB: mynode also opens output.namelist.dyn !
	301	! ! on unit number numond on first proc !
[1593]	302	! !--------------------------------------------!
[1412]	303	#if defined key_iomput
[2200]	304	IF( Agrif_Root() ) THEN
[5407]	305	IF( lk_oasis ) THEN
	306	CALL cpl_init( "oceanx", ilocal_comm ) ! nemo local communicator given by oasis
	307	CALL xios_initialize( "not used",local_comm=ilocal_comm ) ! send nemo communicator to xios
[4990]	308	ELSE
[5407]	309	CALL xios_initialize( "for_xios_mpi_id",return_comm=ilocal_comm ) ! nemo local communicator given by xios
[4990]	310	ENDIF
[2200]	311	ENDIF
[5407]	312	! Nodes selection (control print return in cltxt)
	313	narea = mynode( cltxt, 'output.namelist.dyn', numnam_ref, numnam_cfg, numond , nstop, ilocal_comm )
[532]	314	#else
[5407]	315	IF( lk_oasis ) THEN
[4990]	316	IF( Agrif_Root() ) THEN
[5407]	317	CALL cpl_init( "oceanx", ilocal_comm ) ! nemo local communicator given by oasis
[4990]	318	ENDIF
[5407]	319	! Nodes selection (control print return in cltxt)
	320	narea = mynode( cltxt, 'output.namelist.dyn', numnam_ref, numnam_cfg, numond , nstop, ilocal_comm )
[4990]	321	ELSE
	322	ilocal_comm = 0
[5407]	323	! Nodes selection (control print return in cltxt)
	324	narea = mynode( cltxt, 'output.namelist.dyn', numnam_ref, numnam_cfg, numond , nstop )
[2236]	325	ENDIF
[532]	326	#endif
[2715]	327	narea = narea + 1 ! mynode return the rank of proc (0 --> jpnij -1 )
[3]	328
[4624]	329	lwm = (narea == 1) ! control of output namelists
[2715]	330	lwp = (narea == 1) .OR. ln_ctl ! control of all listing output print
[1579]	331
[4624]	332	IF(lwm) THEN
	333	! write merged namelists from earlier to output namelist now that the
	334	! file has been opened in call to mynode. nammpp has already been
	335	! written in mynode (if lk_mpp_mpi)
	336	WRITE( numond, namctl )
	337	WRITE( numond, namcfg )
	338	ENDIF
	339
[3764]	340	! If dimensions of processor grid weren't specified in the namelist file
[2715]	341	! then we calculate them here now that we have our communicator size
	342	IF( (jpni < 1) .OR. (jpnj < 1) )THEN
	343	#if defined key_mpp_mpi
	344	IF( Agrif_Root() ) CALL nemo_partition(mppsize)
	345	#else
	346	jpni = 1
	347	jpnj = 1
	348	jpnij = jpni*jpnj
	349	#endif
	350	END IF
	351
	352	! Calculate domain dimensions given calculated jpni and jpnj
	353	! This used to be done in par_oce.F90 when they were parameters rather
	354	! than variables
	355	IF( Agrif_Root() ) THEN
[3294]	356	#if defined key_nemocice_decomp
[3625]	357	jpi = ( nx_global+2-2jpreci + (jpni-1) ) / jpni + 2jpreci ! first dim.
	358	jpj = ( ny_global+2-2jprecj + (jpnj-1) ) / jpnj + 2jprecj ! second dim.
[3294]	359	#else
[3625]	360	jpi = ( jpiglo-2jpreci + (jpni-1) ) / jpni + 2jpreci ! first dim.
[2715]	361	jpj = ( jpjglo-2jprecj + (jpnj-1) ) / jpnj + 2jprecj ! second dim.
[3294]	362	#endif
[6204]	363	ENDIF
[2715]	364	jpk = jpkdta ! third dim
[6204]	365	#if defined key_agrif
	366	! simple trick to use same vertical grid as parent
	367	! but different number of levels:
	368	! Save maximum number of levels in jpkdta, then define all vertical grids
	369	! with this number.
	370	! Suppress once vertical online interpolation is ok
	371	IF(.NOT.Agrif_Root()) jpkdta = Agrif_Parent(jpkdta)
	372	#endif
[2715]	373	jpim1 = jpi-1 ! inner domain indices
	374	jpjm1 = jpj-1 ! " "
	375	jpkm1 = jpk-1 ! " "
	376	jpij = jpi*jpj ! jpi x j
	377
[1593]	378	IF(lwp) THEN ! open listing units
	379	!
[1581]	380	CALL ctl_opn( numout, 'ocean.output', 'REPLACE', 'FORMATTED', 'SEQUENTIAL', -1, 6, .FALSE., narea )
[1593]	381	!
[1579]	382	WRITE(numout,*)
[3294]	383	WRITE(numout,*) ' CNRS - NERC - Met OFFICE - MERCATOR-ocean - INGV - CMCC'
[1593]	384	WRITE(numout,*) ' NEMO team'
[1579]	385	WRITE(numout,*) ' Ocean General Circulation Model'
[5120]	386	WRITE(numout,*) ' version 3.6 (2015) '
[1579]	387	WRITE(numout,*)
	388	WRITE(numout,*)
[3764]	389	DO ji = 1, SIZE(cltxt)
[1593]	390	IF( TRIM(cltxt(ji)) /= '' ) WRITE(numout,*) cltxt(ji) ! control print of mynode
[1579]	391	END DO
[1593]	392	WRITE(numout,cform_aaa) ! Flag AAAAAAA
	393	!
[473]	394	ENDIF
[2715]	395
[3764]	396	! Now we know the dimensions of the grid and numout has been set we can
[2715]	397	! allocate arrays
	398	CALL nemo_alloc()
	399
[2496]	400	! !-------------------------------!
	401	! ! NEMO general initialization !
	402	! !-------------------------------!
[473]	403
[2496]	404	CALL nemo_ctl ! Control prints & Benchmark
[531]	405
[2082]	406	! ! Domain decomposition
[1593]	407	IF( jpni*jpnj == jpnij ) THEN ; CALL mpp_init ! standard cutting out
	408	ELSE ; CALL mpp_init2 ! eliminate land processors
[3]	409	ENDIF
[2382]	410	!
[3294]	411	IF( nn_timing == 1 ) CALL timing_init
	412	!
[2082]	413	! ! General initialization
[2027]	414	CALL phy_cst ! Physical constants
	415	CALL eos_init ! Equation of state
[4245]	416	IF( lk_c1d ) CALL c1d_init ! 1D column configuration
[2027]	417	CALL dom_cfg ! Domain configuration
	418	CALL dom_init ! Domain
[413]	419
[3294]	420	IF( ln_nnogather ) CALL nemo_northcomms ! Initialise the northfold neighbour lists (must be done after the masks are defined)
	421
[2027]	422	IF( ln_ctl ) CALL prt_ctl_init ! Print control
	423
[3651]	424	CALL istate_init ! ocean initial state (Dynamics and tracers)
	425
[8561]	426	CALL diurnal_sst_bulk_init ! diurnal sst
	427	IF ( ln_diurnal ) CALL diurnal_sst_coolskin_init ! cool skin
	428
[4292]	429	IF( lk_tide ) CALL tide_init( nit000 ) ! Initialisation of the tidal harmonics
[3651]	430
[5123]	431	CALL sbc_init ! Forcings : surface module (clem: moved here for bdy purpose)
	432
[4990]	433	IF( lk_bdy ) CALL bdy_init ! Open boundaries initialisation
	434	IF( lk_bdy ) CALL bdy_dta_init ! Open boundaries initialisation of external data arrays
[4292]	435	IF( lk_bdy .AND. lk_tide ) &
[4990]	436	& CALL bdytide_init ! Open boundaries initialisation of tidal harmonic forcing
[2027]	437
[3294]	438	CALL dyn_nept_init ! simplified form of Neptune effect
[4152]	439	!
	440	IF( ln_crs ) CALL crs_init ! Domain initialization of coarsened grid
	441	!
	442	! Ocean physics
[2082]	443	! ! Vertical physics
	444	CALL zdf_init ! namelist read
	445	CALL zdf_bfr_init ! bottom friction
	446	IF( lk_zdfric ) CALL zdf_ric_init ! Richardson number dependent Kz
[2329]	447	IF( lk_zdftke ) CALL zdf_tke_init ! TKE closure scheme
	448	IF( lk_zdfgls ) CALL zdf_gls_init ! GLS closure scheme
	449	IF( lk_zdfkpp ) CALL zdf_kpp_init ! KPP closure scheme
[2082]	450	IF( lk_zdftmx ) CALL zdf_tmx_init ! tidal vertical mixing
[3764]	451	IF( lk_zdfddm .AND. .NOT. lk_zdfkpp ) &
[2082]	452	& CALL zdf_ddm_init ! double diffusive mixing
	453	! ! Lateral physics
	454	CALL ldf_tra_init ! Lateral ocean tracer physics
	455	CALL ldf_dyn_init ! Lateral ocean momentum physics
[2392]	456	IF( lk_ldfslp ) CALL ldf_slp_init ! slope of lateral mixing
[2082]	457
[2027]	458	! ! Active tracers
	459	CALL tra_qsr_init ! penetrative solar radiation qsr
[2325]	460	CALL tra_bbc_init ! bottom heat flux
[2027]	461	IF( lk_trabbl ) CALL tra_bbl_init ! advective (and/or diffusive) bottom boundary layer scheme
[4245]	462	CALL tra_dmp_init ! internal damping trends- tracers
[2027]	463	CALL tra_adv_init ! horizontal & vertical advection
	464	CALL tra_ldf_init ! lateral mixing
	465	CALL tra_zdf_init ! vertical mixing and after tracer fields
	466
	467	! ! Dynamics
[4245]	468	IF( lk_c1d ) CALL dyn_dmp_init ! internal damping trends- momentum
[2027]	469	CALL dyn_adv_init ! advection (vector or flux form)
[2104]	470	CALL dyn_vor_init ! vorticity term including Coriolis
[2027]	471	CALL dyn_ldf_init ! lateral mixing
[2104]	472	CALL dyn_hpg_init ! horizontal gradient of Hydrostatic pressure
[2027]	473	CALL dyn_zdf_init ! vertical diffusion
	474	CALL dyn_spg_init ! surface pressure gradient
[3764]	475
[2392]	476	! ! Misc. options
[4147]	477	IF( nn_cla == 1 .AND. cp_cfg == 'orca' .AND. jp_cfg == 2 ) CALL cla_init ! Cross Land Advection
[3609]	478	CALL icb_init( rdt, nit000) ! initialise icebergs instance
[5329]	479	CALL sto_par_init ! Stochastic parametrization
	480	IF( ln_sto_eos ) CALL sto_pts_init ! RRandom T/S fluctuations
[4147]	481
[1594]	482	#if defined key_top
[2027]	483	! ! Passive tracers
[2082]	484	CALL trc_init
[1594]	485	#endif
[4990]	486	! ! Diagnostics
[3294]	487	IF( lk_floats ) CALL flo_init ! drifting Floats
[2392]	488	IF( lk_diaar5 ) CALL dia_ar5_init ! ar5 diag
[2027]	489	CALL dia_ptr_init ! Poleward TRansports initialization
[3294]	490	IF( lk_diadct ) CALL dia_dct_init ! Sections tranports
[2148]	491	CALL dia_hsb_init ! heat content, salt content and volume budgets
[4990]	492	CALL trd_init ! Mixed-layer/Vorticity/Integral constraints trends
[2392]	493	IF( lk_diaobs ) THEN ! Observation & model comparison
[2382]	494	CALL dia_obs_init ! Initialize observational data
	495	CALL dia_obs( nit000 - 1 ) ! Observation operator for restart
[3764]	496	ENDIF
[4990]	497
[2382]	498	! ! Assimilation increments
[9181]	499	IF( lk_asminc ) THEN
	500	#if defined key_shelf
	501	CALL zdf_mxl_tref() ! Initialization of hmld_tref
	502	#endif
	503	CALL asm_inc_init ! Initialize assimilation increments
	504	ENDIF
	505
[2382]	506	IF(lwp) WRITE(numout,*) 'Euler time step switch is ', neuler
[8059]	507	CALL dia_tmb_init ! TMB outputs
	508	CALL dia_25h_init ! 25h mean outputs
[8561]	509	CALL dia_diaopfoam_init ! FOAM operational output
[1593]	510	!
[2496]	511	END SUBROUTINE nemo_init
[467]	512
	513
[2496]	514	SUBROUTINE nemo_ctl
[467]	515	!!----------------------------------------------------------------------
[2496]	516	!! * ROUTINE nemo_ctl *
[467]	517	!!
[3764]	518	!! ** Purpose : control print setting
[467]	519	!!
[2442]	520	!! ** Method : - print namctl information and check some consistencies
[467]	521	!!----------------------------------------------------------------------
[2442]	522	!
[2496]	523	IF(lwp) THEN ! control print
[531]	524	WRITE(numout,*)
[2496]	525	WRITE(numout,*) 'nemo_ctl: Control prints & Benchmark'
[531]	526	WRITE(numout,*) '~~~~~~~ '
[1593]	527	WRITE(numout,*) ' Namelist namctl'
[1601]	528	WRITE(numout,*) ' run control (for debugging) ln_ctl = ', ln_ctl
	529	WRITE(numout,*) ' level of print nn_print = ', nn_print
	530	WRITE(numout,*) ' Start i indice for SUM control nn_ictls = ', nn_ictls
	531	WRITE(numout,*) ' End i indice for SUM control nn_ictle = ', nn_ictle
	532	WRITE(numout,*) ' Start j indice for SUM control nn_jctls = ', nn_jctls
	533	WRITE(numout,*) ' End j indice for SUM control nn_jctle = ', nn_jctle
	534	WRITE(numout,*) ' number of proc. following i nn_isplt = ', nn_isplt
	535	WRITE(numout,*) ' number of proc. following j nn_jsplt = ', nn_jsplt
	536	WRITE(numout,*) ' benchmark parameter (0/1) nn_bench = ', nn_bench
[3610]	537	WRITE(numout,*) ' timing activated (0/1) nn_timing = ', nn_timing
[531]	538	ENDIF
[2442]	539	!
[1601]	540	nprint = nn_print ! convert DOCTOR namelist names into OLD names
	541	nictls = nn_ictls
	542	nictle = nn_ictle
	543	njctls = nn_jctls
	544	njctle = nn_jctle
	545	isplt = nn_isplt
	546	jsplt = nn_jsplt
	547	nbench = nn_bench
[4147]	548
	549	IF(lwp) THEN ! control print
	550	WRITE(numout,*)
	551	WRITE(numout,*) 'namcfg : configuration initialization through namelist read'
	552	WRITE(numout,*) '~~~~~~~ '
	553	WRITE(numout,*) ' Namelist namcfg'
	554	WRITE(numout,*) ' configuration name cp_cfg = ', TRIM(cp_cfg)
	555	WRITE(numout,*) ' configuration zoom name cp_cfz = ', TRIM(cp_cfz)
	556	WRITE(numout,*) ' configuration resolution jp_cfg = ', jp_cfg
	557	WRITE(numout,*) ' 1st lateral dimension ( >= jpi ) jpidta = ', jpidta
	558	WRITE(numout,*) ' 2nd " " ( >= jpj ) jpjdta = ', jpjdta
	559	WRITE(numout,*) ' 3nd " " jpkdta = ', jpkdta
	560	WRITE(numout,*) ' 1st dimension of global domain in i jpiglo = ', jpiglo
	561	WRITE(numout,*) ' 2nd - - in j jpjglo = ', jpjglo
	562	WRITE(numout,*) ' left bottom i index of the zoom (in data domain) jpizoom = ', jpizoom
	563	WRITE(numout,*) ' left bottom j index of the zoom (in data domain) jpizoom = ', jpjzoom
	564	WRITE(numout,*) ' lateral cond. type (between 0 and 6) jperio = ', jperio
[5118]	565	WRITE(numout,*) ' use file attribute if exists as i/p j-start ln_use_jattr = ', ln_use_jattr
[4147]	566	ENDIF
[2442]	567	! ! Parameter control
[1593]	568	!
	569	IF( ln_ctl ) THEN ! sub-domain area indices for the control prints
[3294]	570	IF( lk_mpp .AND. jpnij > 1 ) THEN
[2496]	571	isplt = jpni ; jsplt = jpnj ; ijsplt = jpni*jpnj ! the domain is forced to the real split domain
[531]	572	ELSE
	573	IF( isplt == 1 .AND. jsplt == 1 ) THEN
[1593]	574	CALL ctl_warn( ' - isplt & jsplt are equal to 1', &
	575	& ' - the print control will be done over the whole domain' )
[531]	576	ENDIF
[1593]	577	ijsplt = isplt * jsplt ! total number of processors ijsplt
[531]	578	ENDIF
	579	IF(lwp) WRITE(numout,*)' - The total number of processors over which the'
	580	IF(lwp) WRITE(numout,*)' print control will be done is ijsplt : ', ijsplt
[1593]	581	!
	582	! ! indices used for the SUM control
	583	IF( nictls+nictle+njctls+njctle == 0 ) THEN ! print control done over the default area
[3764]	584	lsp_area = .FALSE.
[1593]	585	ELSE ! print control done over a specific area
[531]	586	lsp_area = .TRUE.
	587	IF( nictls < 1 .OR. nictls > jpiglo ) THEN
	588	CALL ctl_warn( ' - nictls must be 1<=nictls>=jpiglo, it is forced to 1' )
	589	nictls = 1
	590	ENDIF
	591	IF( nictle < 1 .OR. nictle > jpiglo ) THEN
	592	CALL ctl_warn( ' - nictle must be 1<=nictle>=jpiglo, it is forced to jpiglo' )
	593	nictle = jpiglo
	594	ENDIF
	595	IF( njctls < 1 .OR. njctls > jpjglo ) THEN
	596	CALL ctl_warn( ' - njctls must be 1<=njctls>=jpjglo, it is forced to 1' )
	597	njctls = 1
	598	ENDIF
	599	IF( njctle < 1 .OR. njctle > jpjglo ) THEN
	600	CALL ctl_warn( ' - njctle must be 1<=njctle>=jpjglo, it is forced to jpjglo' )
	601	njctle = jpjglo
	602	ENDIF
[1593]	603	ENDIF
	604	ENDIF
[2442]	605	!
[3764]	606	IF( nbench == 1 ) THEN ! Benchmark
[531]	607	SELECT CASE ( cp_cfg )
[1593]	608	CASE ( 'gyre' ) ; CALL ctl_warn( ' The Benchmark is activated ' )
	609	CASE DEFAULT ; CALL ctl_stop( ' The Benchmark is based on the GYRE configuration:', &
[4147]	610	& ' cp_cfg = "gyre" in namelist &namcfg or set nbench = 0' )
[531]	611	END SELECT
	612	ENDIF
[1593]	613	!
[3764]	614	IF( 1_wp /= SIGN(1._wp,-0._wp) ) CALL ctl_stop( 'nemo_ctl: The intrinsec SIGN function follows ', &
	615	& 'f2003 standard. ' , &
	616	& 'Compile with key_nosignedzero enabled' )
	617	!
[2496]	618	END SUBROUTINE nemo_ctl
[467]	619
	620
[2496]	621	SUBROUTINE nemo_closefile
[467]	622	!!----------------------------------------------------------------------
[2496]	623	!! * ROUTINE nemo_closefile *
[467]	624	!!
	625	!! ** Purpose : Close the files
	626	!!----------------------------------------------------------------------
[1593]	627	!
	628	IF( lk_mpp ) CALL mppsync
	629	!
[1685]	630	CALL iom_close ! close all input/output files managed by iom_*
[1593]	631	!
[4147]	632	IF( numstp /= -1 ) CLOSE( numstp ) ! time-step file
	633	IF( numsol /= -1 ) CLOSE( numsol ) ! solver file
	634	IF( numnam_ref /= -1 ) CLOSE( numnam_ref ) ! oce reference namelist
	635	IF( numnam_cfg /= -1 ) CLOSE( numnam_cfg ) ! oce configuration namelist
[4624]	636	IF( lwm.AND.numond /= -1 ) CLOSE( numond ) ! oce output namelist
[4147]	637	IF( numnam_ice_ref /= -1 ) CLOSE( numnam_ice_ref ) ! ice reference namelist
	638	IF( numnam_ice_cfg /= -1 ) CLOSE( numnam_ice_cfg ) ! ice configuration namelist
[4624]	639	IF( lwm.AND.numoni /= -1 ) CLOSE( numoni ) ! ice output namelist
[4147]	640	IF( numevo_ice /= -1 ) CLOSE( numevo_ice ) ! ice variables (temp. evolution)
	641	IF( numout /= 6 ) CLOSE( numout ) ! standard model output file
	642	IF( numdct_vol /= -1 ) CLOSE( numdct_vol ) ! volume transports
	643	IF( numdct_heat /= -1 ) CLOSE( numdct_heat ) ! heat transports
	644	IF( numdct_salt /= -1 ) CLOSE( numdct_salt ) ! salt transports
[3294]	645
[1593]	646	!
[2442]	647	numout = 6 ! redefine numout in case it is used after this point...
	648	!
[2496]	649	END SUBROUTINE nemo_closefile
[467]	650
[2715]	651
	652	SUBROUTINE nemo_alloc
	653	!!----------------------------------------------------------------------
	654	!! * ROUTINE nemo_alloc *
	655	!!
	656	!! ** Purpose : Allocate all the dynamic arrays of the OPA modules
	657	!!
	658	!! ** Method :
	659	!!----------------------------------------------------------------------
	660	USE diawri , ONLY: dia_wri_alloc
	661	USE dom_oce , ONLY: dom_oce_alloc
	662	USE ldfdyn_oce, ONLY: ldfdyn_oce_alloc
	663	USE ldftra_oce, ONLY: ldftra_oce_alloc
	664	USE trc_oce , ONLY: trc_oce_alloc
[8059]	665	USE diainsitutem, ONLY: insitu_tem_alloc
[3680]	666	#if defined key_diadct
	667	USE diadct , ONLY: diadct_alloc
	668	#endif
[4354]	669	#if defined key_bdy
	670	USE bdy_oce , ONLY: bdy_oce_alloc
	671	#endif
[2715]	672	!
	673	INTEGER :: ierr
	674	!!----------------------------------------------------------------------
	675	!
[3764]	676	ierr = oce_alloc () ! ocean
[2715]	677	ierr = ierr + dia_wri_alloc ()
	678	ierr = ierr + dom_oce_alloc () ! ocean domain
	679	ierr = ierr + ldfdyn_oce_alloc() ! ocean lateral physics : dynamics
	680	ierr = ierr + ldftra_oce_alloc() ! ocean lateral physics : tracers
	681	ierr = ierr + zdf_oce_alloc () ! ocean vertical physics
[8059]	682	ierr = ierr + insitu_tem_alloc()
[2715]	683	!
	684	ierr = ierr + trc_oce_alloc () ! shared TRC / TRA arrays
	685	!
[3680]	686	#if defined key_diadct
	687	ierr = ierr + diadct_alloc () !
	688	#endif
[4354]	689	#if defined key_bdy
	690	ierr = ierr + bdy_oce_alloc () ! bdy masks (incl. initialization)
	691	#endif
[3680]	692	!
[2715]	693	IF( lk_mpp ) CALL mpp_sum( ierr )
	694	IF( ierr /= 0 ) CALL ctl_stop( 'STOP', 'nemo_alloc : unable to allocate standard ocean arrays' )
	695	!
	696	END SUBROUTINE nemo_alloc
	697
	698
	699	SUBROUTINE nemo_partition( num_pes )
	700	!!----------------------------------------------------------------------
	701	!! * ROUTINE nemo_partition *
	702	!!
[3764]	703	!! ** Purpose :
[2715]	704	!!
	705	!! ** Method :
	706	!!----------------------------------------------------------------------
[4990]	707	INTEGER, INTENT(in) :: num_pes ! The number of MPI processes we have
[2715]	708	!
	709	INTEGER, PARAMETER :: nfactmax = 20
	710	INTEGER :: nfact ! The no. of factors returned
	711	INTEGER :: ierr ! Error flag
	712	INTEGER :: ji
	713	INTEGER :: idiff, mindiff, imin ! For choosing pair of factors that are closest in value
	714	INTEGER, DIMENSION(nfactmax) :: ifact ! Array of factors
	715	!!----------------------------------------------------------------------
[4990]	716	!
[2715]	717	ierr = 0
[4990]	718	!
[2715]	719	CALL factorise( ifact, nfactmax, nfact, num_pes, ierr )
[4990]	720	!
[2715]	721	IF( nfact <= 1 ) THEN
	722	WRITE (numout, *) 'WARNING: factorisation of number of PEs failed'
	723	WRITE (numout, *) ' : using grid of ',num_pes,' x 1'
	724	jpnj = 1
	725	jpni = num_pes
	726	ELSE
	727	! Search through factors for the pair that are closest in value
	728	mindiff = 1000000
	729	imin = 1
	730	DO ji = 1, nfact-1, 2
	731	idiff = ABS( ifact(ji) - ifact(ji+1) )
	732	IF( idiff < mindiff ) THEN
	733	mindiff = idiff
	734	imin = ji
	735	ENDIF
	736	END DO
	737	jpnj = ifact(imin)
	738	jpni = ifact(imin + 1)
	739	ENDIF
	740	!
	741	jpnij = jpni*jpnj
	742	!
	743	END SUBROUTINE nemo_partition
	744
	745
	746	SUBROUTINE factorise( kfax, kmaxfax, knfax, kn, kerr )
	747	!!----------------------------------------------------------------------
	748	!! * ROUTINE factorise *
	749	!!
	750	!! ** Purpose : return the prime factors of n.
[3764]	751	!! knfax factors are returned in array kfax which is of
[2715]	752	!! maximum dimension kmaxfax.
	753	!! ** Method :
	754	!!----------------------------------------------------------------------
	755	INTEGER , INTENT(in ) :: kn, kmaxfax
	756	INTEGER , INTENT( out) :: kerr, knfax
	757	INTEGER, DIMENSION(kmaxfax), INTENT( out) :: kfax
	758	!
	759	INTEGER :: ifac, jl, inu
	760	INTEGER, PARAMETER :: ntest = 14
[6204]	761	INTEGER, DIMENSION(ntest) :: ilfax
[4990]	762	!
[6204]	763	! ilfax contains the set of allowed factors.
	764	ilfax(:) = (/(2**jl,jl=ntest,1,-1)/)
[2715]	765	!!----------------------------------------------------------------------
[6204]	766	! ilfax contains the set of allowed factors.
	767	ilfax(:) = (/(2**jl,jl=ntest,1,-1)/)
[2715]	768
	769	! Clear the error flag and initialise output vars
	770	kerr = 0
	771	kfax = 1
	772	knfax = 0
	773
	774	! Find the factors of n.
	775	IF( kn == 1 ) GOTO 20
	776
	777	! nu holds the unfactorised part of the number.
	778	! knfax holds the number of factors found.
	779	! l points to the allowed factor list.
	780	! ifac holds the current factor.
	781
	782	inu = kn
	783	knfax = 0
	784
	785	DO jl = ntest, 1, -1
	786	!
	787	ifac = ilfax(jl)
	788	IF( ifac > inu ) CYCLE
	789
	790	! Test whether the factor will divide.
	791
	792	IF( MOD(inu,ifac) == 0 ) THEN
	793	!
	794	knfax = knfax + 1 ! Add the factor to the list
	795	IF( knfax > kmaxfax ) THEN
	796	kerr = 6
	797	write (,) 'FACTOR: insufficient space in factor array ', knfax
	798	return
	799	ENDIF
	800	kfax(knfax) = ifac
	801	! Store the other factor that goes with this one
	802	knfax = knfax + 1
	803	kfax(knfax) = inu / ifac
	804	!WRITE (,) 'ARPDBG, factors ',knfax-1,' & ',knfax,' are ', kfax(knfax-1),' and ',kfax(knfax)
	805	ENDIF
	806	!
	807	END DO
	808
	809	20 CONTINUE ! Label 20 is the exit point from the factor search loop.
	810	!
	811	END SUBROUTINE factorise
	812
[3294]	813	#if defined key_mpp_mpi
[4990]	814
[3294]	815	SUBROUTINE nemo_northcomms
	816	!!======================================================================
	817	!! * ROUTINE nemo_northcomms *
[4230]	818	!! nemo_northcomms : Setup for north fold exchanges with explicit
	819	!! point-to-point messaging
[3294]	820	!!=====================================================================
	821	!!----------------------------------------------------------------------
[3764]	822	!!
[3294]	823	!! ** Purpose : Initialization of the northern neighbours lists.
	824	!!----------------------------------------------------------------------
[3764]	825	!! 1.0 ! 2011-10 (A. C. Coward, NOCS & J. Donners, PRACE)
[4230]	826	!! 2.0 ! 2013-06 Setup avoiding MPI communication (I. Epicoco, S. Mocavero, CMCC)
[3294]	827	!!----------------------------------------------------------------------
	828
[4230]	829	INTEGER :: sxM, dxM, sxT, dxT, jn
	830	INTEGER :: njmppmax
[3294]	831
[4230]	832	njmppmax = MAXVAL( njmppt )
	833
	834	!initializes the north-fold communication variables
	835	isendto(:) = 0
[3294]	836	nsndto = 0
	837
[4230]	838	!if I am a process in the north
	839	IF ( njmpp == njmppmax ) THEN
	840	!sxM is the first point (in the global domain) needed to compute the
	841	!north-fold for the current process
	842	sxM = jpiglo - nimppt(narea) - nlcit(narea) + 1
	843	!dxM is the last point (in the global domain) needed to compute the
	844	!north-fold for the current process
	845	dxM = jpiglo - nimppt(narea) + 2
[3294]	846
[4230]	847	!loop over the other north-fold processes to find the processes
	848	!managing the points belonging to the sxT-dxT range
[4671]	849
	850	DO jn = 1, jpni
[4230]	851	!sxT is the first point (in the global domain) of the jn
	852	!process
[4671]	853	sxT = nfiimpp(jn, jpnj)
[4230]	854	!dxT is the last point (in the global domain) of the jn
	855	!process
[4671]	856	dxT = nfiimpp(jn, jpnj) + nfilcit(jn, jpnj) - 1
[4230]	857	IF ((sxM .gt. sxT) .AND. (sxM .lt. dxT)) THEN
	858	nsndto = nsndto + 1
[4671]	859	isendto(nsndto) = jn
[4645]	860	ELSEIF ((sxM .le. sxT) .AND. (dxM .ge. dxT)) THEN
[4230]	861	nsndto = nsndto + 1
[4671]	862	isendto(nsndto) = jn
[4230]	863	ELSEIF ((dxM .lt. dxT) .AND. (sxT .lt. dxM)) THEN
	864	nsndto = nsndto + 1
[4671]	865	isendto(nsndto) = jn
[4230]	866	END IF
	867	END DO
[4671]	868	nfsloop = 1
	869	nfeloop = nlci
	870	DO jn = 2,jpni-1
	871	IF(nfipproc(jn,jpnj) .eq. (narea - 1)) THEN
	872	IF (nfipproc(jn - 1 ,jpnj) .eq. -1) THEN
	873	nfsloop = nldi
	874	ENDIF
	875	IF (nfipproc(jn + 1,jpnj) .eq. -1) THEN
	876	nfeloop = nlei
	877	ENDIF
	878	ENDIF
	879	END DO
	880
[3294]	881	ENDIF
[4230]	882	l_north_nogather = .TRUE.
[3294]	883	END SUBROUTINE nemo_northcomms
	884	#else
	885	SUBROUTINE nemo_northcomms ! Dummy routine
	886	WRITE(,) 'nemo_northcomms: You should not have seen this print! error?'
	887	END SUBROUTINE nemo_northcomms
	888	#endif
[4990]	889
[3]	890	!!======================================================================
[2496]	891	END MODULE nemogcm
[4354]	892
	893

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