MODULE nemogcm !!====================================================================== !! *** MODULE nemogcm *** !! StandAlone Surface module : surface fluxes + sea-ice + iceberg floats !!====================================================================== !! History : 3.6 ! 2011-11 (S. Alderson, G. Madec) original code !! - ! 2013-06 (I. Epicoco, S. Mocavero, CMCC) nemo_northcomms: setup avoiding MPI communication !! - ! 2014-12 (G. Madec) remove KPP scheme and cross-land advection (cla) !! 4.0 ! 2016-10 (G. Madec, S. Flavoni) domain configuration / user defined interface !!---------------------------------------------------------------------- !!---------------------------------------------------------------------- !! nemo_gcm : solve ocean dynamics, tracer, biogeochemistry and/or sea-ice !! nemo_init : initialization of the NEMO system !! nemo_ctl : initialisation of the contol print !! nemo_closefile: close remaining open files !! nemo_alloc : dynamical allocation !! nemo_partition: calculate MPP domain decomposition !! factorise : calculate the factors of the no. of MPI processes !!---------------------------------------------------------------------- USE step_oce ! module used in the ocean time stepping module USE sbc_oce ! surface boundary condition: ocean USE phycst ! physical constant (par_cst routine) USE domain ! domain initialization (dom_init & dom_cfg routines) USE usrdef_nam ! user defined configuration USE daymod ! calendar USE step ! NEMO time-stepping (stp routine) USE cpl_oasis3 ! USE sbcssm ! USE icbini ! handle bergs, initialisation USE icbstp ! handle bergs, calving, themodynamics and transport USE bdyini ! open boundary cond. setting (bdy_init routine). clem: mandatory for LIM3 USE bdydta ! open boundary cond. setting (bdy_dta_init routine). clem: mandatory for LIM3 ! USE lib_mpp ! distributed memory computing USE mppini ! shared/distributed memory setting (mpp_init routine) USE lbcnfd , ONLY: isendto, nsndto, nfsloop, nfeloop ! Setup of north fold exchanges USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined) #if defined key_iomput USE xios ! xIOserver #endif IMPLICIT NONE PRIVATE PUBLIC nemo_gcm ! called by model.F90 PUBLIC nemo_init ! needed by AGRIF CHARACTER(lc) :: cform_aaa="( /, 'AAAAAAAA', / ) " ! flag for output listing !!---------------------------------------------------------------------- !! NEMO/OPA 4.0 , NEMO Consortium (2016) !! $Id$ !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) !!---------------------------------------------------------------------- CONTAINS SUBROUTINE nemo_gcm !!---------------------------------------------------------------------- !! *** ROUTINE nemo_gcm *** !! !! ** Purpose : NEMO solves the primitive equations on an orthogonal !! curvilinear mesh on the sphere. !! !! ** Method : - model general initialization !! - launch the time-stepping (stp routine) !! - finalize the run by closing files and communications !! !! References : Madec, Delecluse, Imbard, and Levy, 1997: internal report, IPSL. !! Madec, 2008, internal report, IPSL. !!---------------------------------------------------------------------- INTEGER :: istp ! time step index !!---------------------------------------------------------------------- ! #if defined key_agrif CALL Agrif_Init_Grids() ! AGRIF: set the meshes #endif ! ! !-----------------------! CALL nemo_init !== Initialisations ==! ! !-----------------------! #if defined key_agrif CALL Agrif_Declare_Var_dom ! AGRIF: set the meshes for DOM CALL Agrif_Declare_Var ! " " " " " DYN/TRA # if defined key_top CALL Agrif_Declare_Var_top ! " " " " " TOP # endif # if defined key_lim2 CALL Agrif_Declare_Var_lim2 ! " " " " " LIM # endif # if defined key_lim3 CALL Agrif_Declare_Var_lim3 ! " " " " " LIM3 # endif #endif ! check that all process are still there... If some process have an error, ! they will never enter in step and other processes will wait until the end of the cpu time! IF( lk_mpp ) CALL mpp_max( nstop ) IF(lwp) WRITE(numout,cform_aaa) ! Flag AAAAAAA ! !-----------------------! ! !== time stepping ==! ! !-----------------------! istp = nit000 #if defined key_agrif CALL Agrif_Regrid() #endif DO WHILE ( istp <= nitend .AND. nstop == 0 ) #if defined key_agrif CALL stp ! AGRIF: time stepping #else IF ( .NOT. ln_diurnal_only ) THEN CALL stp( istp ) ! standard time stepping ELSE CALL stp_diurnal( istp ) ! time step only the diurnal SST ENDIF #endif istp = istp + 1 IF( lk_mpp ) CALL mpp_max( nstop ) END DO ! IF( ln_icebergs ) CALL icb_end( nitend ) ! !------------------------! ! !== finalize the run ==! ! !------------------------! IF(lwp) WRITE(numout,cform_aaa) ! Flag AAAAAAA ! IF( nstop /= 0 .AND. lwp ) THEN ! error print WRITE(numout,cform_err) WRITE(numout,*) nstop, ' error have been found' ENDIF ! #if defined key_agrif IF( .NOT. Agrif_Root() ) THEN CALL Agrif_ParentGrid_To_ChildGrid() IF( nn_timing == 1 ) CALL timing_finalize CALL Agrif_ChildGrid_To_ParentGrid() ENDIF #endif IF( nn_timing == 1 ) CALL timing_finalize ! CALL nemo_closefile ! #if defined key_iomput CALL xios_finalize ! end mpp communications with xios IF( lk_oasis ) CALL cpl_finalize ! end coupling and mpp communications with OASIS #else IF( lk_oasis ) THEN CALL cpl_finalize ! end coupling and mpp communications with OASIS ELSE IF( lk_mpp ) CALL mppstop ! end mpp communications ENDIF #endif ! END SUBROUTINE nemo_gcm SUBROUTINE nemo_init !!---------------------------------------------------------------------- !! *** ROUTINE nemo_init *** !! !! ** Purpose : initialization of the NEMO GCM !!---------------------------------------------------------------------- INTEGER :: ji ! dummy loop indices INTEGER :: ilocal_comm ! local integer INTEGER :: ios, inum ! - - INTEGER :: iiarea, ijarea ! local integers INTEGER :: iirest, ijrest ! local integers CHARACTER(len=120), DIMENSION(30) :: cltxt, cltxt2, clnam CHARACTER(len=80) :: clname ! NAMELIST/namctl/ ln_ctl , nn_print, nn_ictls, nn_ictle, & & nn_isplt , nn_jsplt, nn_jctls, nn_jctle, & & nn_timing, nn_diacfl NAMELIST/namcfg/ ln_read_cfg, cn_domcfg, ln_write_cfg, cn_domcfg_out, ln_use_jattr !!---------------------------------------------------------------------- ! cltxt = '' cltxt2 = '' clnam = '' cxios_context = 'nemo' ! ! ! Open reference namelist and configuration namelist files IF( lk_oasis ) THEN CALL ctl_opn( numnam_ref, 'namelist_sas_ref', 'OLD', 'FORMATTED', 'SEQUENTIAL', -1, 6, .FALSE. ) CALL ctl_opn( numnam_cfg, 'namelist_sas_cfg', 'OLD', 'FORMATTED', 'SEQUENTIAL', -1, 6, .FALSE. ) cxios_context = 'sas' clname = 'output.namelist_sas.dyn' ELSE CALL ctl_opn( numnam_ref, 'namelist_ref', 'OLD', 'FORMATTED', 'SEQUENTIAL', -1, 6, .FALSE. ) CALL ctl_opn( numnam_cfg, 'namelist_cfg', 'OLD', 'FORMATTED', 'SEQUENTIAL', -1, 6, .FALSE. ) cxios_context = 'nemo' clname = 'output.namelist.dyn' ENDIF ! REWIND( numnam_ref ) ! Namelist namctl in reference namelist : Control prints READ ( numnam_ref, namctl, IOSTAT = ios, ERR = 901 ) 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namctl in reference namelist', .TRUE. ) ! REWIND( numnam_cfg ) ! Namelist namctl in confguration namelist READ ( numnam_cfg, namctl, IOSTAT = ios, ERR = 902 ) 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namctl in configuration namelist', .TRUE. ) ! REWIND( numnam_ref ) ! Namelist namcfg in reference namelist : Control prints READ ( numnam_ref, namcfg, IOSTAT = ios, ERR = 903 ) 903 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namcfg in reference namelist', .TRUE. ) REWIND( numnam_cfg ) ! Namelist namcfg in confguration namelist : Control prints & Benchmark READ ( numnam_cfg, namcfg, IOSTAT = ios, ERR = 904 ) 904 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namcfg in configuration namelist', .TRUE. ) ! !--------------------------! ! ! Set global domain size ! (control print return in cltxt2) ! !--------------------------! IF( ln_read_cfg ) THEN ! Read sizes in domain configuration file CALL domain_cfg ( cltxt2, cn_cfg, nn_cfg, jpiglo, jpjglo, jpkglo, jperio ) ! ELSE ! user-defined namelist CALL usr_def_nam( cltxt2, clnam, cn_cfg, nn_cfg, jpiglo, jpjglo, jpkglo, jperio ) ENDIF ! ! ! !--------------------------------------------! ! ! set communicator & select the local node ! ! ! NB: mynode also opens output.namelist.dyn ! ! ! on unit number numond on first proc ! ! !--------------------------------------------! #if defined key_iomput IF( Agrif_Root() ) THEN IF( lk_oasis ) THEN CALL cpl_init( "sas", ilocal_comm ) ! nemo local communicator given by oasis CALL xios_initialize( "not used",local_comm=ilocal_comm ) ! send nemo communicator to xios ELSE CALL xios_initialize( "for_xios_mpi_id",return_comm=ilocal_comm ) ! nemo local communicator given by xios ENDIF ENDIF narea = mynode ( cltxt, clname, numnam_ref, numnam_cfg, numond , nstop, ilocal_comm ) ! Nodes selection #else IF( lk_oasis ) THEN IF( Agrif_Root() ) THEN CALL cpl_init( "sas", ilocal_comm ) ! nemo local communicator given by oasis ENDIF narea = mynode( cltxt, clname, numnam_ref, numnam_cfg, numond , nstop, ilocal_comm ) ! Nodes selection (control print return in cltxt) ELSE ilocal_comm = 0 narea = mynode( cltxt, clname, numnam_ref, numnam_cfg, numond , nstop ) ! Nodes selection (control print return in cltxt) ENDIF #endif narea = narea + 1 ! mynode return the rank of proc (0 --> jpnij -1 ) lwm = (narea == 1) ! control of output namelists lwp = (narea == 1) .OR. ln_ctl ! control of all listing output print IF(lwm) THEN ! write merged namelists from earlier to output namelist ! ! now that the file has been opened in call to mynode. ! ! NB: nammpp has already been written in mynode (if lk_mpp_mpi) WRITE( numond, namctl ) WRITE( numond, namcfg ) IF( .NOT.ln_read_cfg ) THEN DO ji = 1, SIZE(clnam) IF( TRIM(clnam(ji)) /= '' ) WRITE(numond, * ) clnam(ji) ! namusr_def print END DO ENDIF ENDIF ! If dimensions of processor grid weren't specified in the namelist file ! then we calculate them here now that we have our communicator size IF( jpni < 1 .OR. jpnj < 1 ) THEN #if defined key_mpp_mpi IF( Agrif_Root() ) CALL nemo_partition( mppsize ) #else jpni = 1 jpnj = 1 jpnij = jpni*jpnj #endif ENDIF ! #if defined key_agrif IF( .NOT. Agrif_Root() ) THEN ! AGRIF children: specific setting (cf. agrif_user.F90) jpiglo = nbcellsx + 2 + 2*nbghostcells jpjglo = nbcellsy + 2 + 2*nbghostcells jpi = ( jpiglo-2*nn_hls + (jpni-1+0) ) / jpni + 2*nn_hls jpj = ( jpjglo-2*nn_hls + (jpnj-1+0) ) / jpnj + 2*nn_hls jpimax = jpi jpjmax = jpj nperio = 0 jperio = 0 ln_use_jattr = .false. ENDIF #endif IF( Agrif_Root() ) THEN ! AGRIF mother: specific setting from jpni and jpnj iiarea = 1 + MOD( narea - 1 , jpni ) ijarea = 1 + ( narea - 1 ) / jpni iirest = 1 + MOD( jpiglo - 2*nn_hls - 1 , jpni ) ijrest = 1 + MOD( jpjglo - 2*nn_hls - 1 , jpnj ) #if defined key_nemocice_decomp jpi = ( nx_global+2-2*nn_hls + (jpni-1) ) / jpni + 2*nn_hls ! first dim. jpj = ( ny_global+2-2*nn_hls + (jpnj-1) ) / jpnj + 2*nn_hls ! second dim. jpimax = jpi jpjmax = jpj IF( iiarea == jpni ) jpi = jpiglo - (jpni - 1) * (jpi - 2*nn_hls) IF( ijarea == jpnj ) jpj = jpjglo - (jpnj - 1) * (jpj - 2*nn_hls) #else jpi = ( jpiglo -2*nn_hls + (jpni-1) ) / jpni + 2*nn_hls ! first dim. jpj = ( jpjglo -2*nn_hls + (jpnj-1) ) / jpnj + 2*nn_hls ! second dim. jpimax = jpi jpjmax = jpj IF( iiarea > iirest ) jpi = jpi - 1 IF( ijarea > ijrest ) jpj = jpj - 1 #endif ENDIF jpk = jpkglo ! third dim #if defined key_agrif ! simple trick to use same vertical grid as parent but different number of levels: ! Save maximum number of levels in jpkglo, then define all vertical grids with this number. ! Suppress once vertical online interpolation is ok IF(.NOT.Agrif_Root()) jpkglo = Agrif_Parent( jpkglo ) #endif jpim1 = jpi-1 ! inner domain indices jpjm1 = jpj-1 ! " " jpkm1 = MAX( 1, jpk-1 ) ! " " jpij = jpi*jpj ! jpi x j IF(lwp) THEN ! open listing units ! IF( lk_oasis ) THEN CALL ctl_opn( numout, 'sas.output', 'REPLACE', 'FORMATTED', 'SEQUENTIAL', -1, 6, .FALSE., narea ) ELSE CALL ctl_opn( numout, 'ocean.output', 'REPLACE', 'FORMATTED', 'SEQUENTIAL', -1, 6, .FALSE., narea ) ENDIF ! WRITE(numout,*) WRITE(numout,*) ' CNRS - NERC - Met OFFICE - MERCATOR-ocean - INGV - CMCC' WRITE(numout,*) ' NEMO team' WRITE(numout,*) ' Ocean General Circulation Model' WRITE(numout,*) ' version 3.7 (2016) ' WRITE(numout,*) ' StandAlone Surface version (SAS) ' WRITE(numout,*) WRITE(numout,*) DO ji = 1, SIZE(cltxt) IF( TRIM(cltxt (ji)) /= '' ) WRITE(numout,*) cltxt(ji) ! control print of mynode END DO WRITE(numout,*) WRITE(numout,*) DO ji = 1, SIZE(cltxt2) IF( TRIM(cltxt2(ji)) /= '' ) WRITE(numout,*) cltxt2(ji) ! control print of domain size END DO ! WRITE(numout,cform_aaa) ! Flag AAAAAAA ! ENDIF ! Now we know the dimensions of the grid and numout has been set: we can allocate arrays CALL nemo_alloc() ! !-------------------------------! ! ! NEMO general initialization ! ! !-------------------------------! CALL nemo_ctl ! Control prints ! ! Domain decomposition CALL mpp_init ! IF( nn_timing == 1 ) CALL timing_init ! ! ! General initialization CALL phy_cst ! Physical constants CALL eos_init ! Equation of state CALL dom_init ! Domain IF( ln_nnogather ) CALL nemo_northcomms ! Initialise the northfold neighbour lists (must be done after the masks are defined) IF( ln_ctl ) CALL prt_ctl_init ! Print control CALL day_init ! model calendar (using both namelist and restart infos) CALL sbc_init ! Forcings : surface module ! ==> clem: open boundaries init. is mandatory for LIM3 because ice BDY is not decoupled from ! the environment of ocean BDY. Therefore bdy is called in both OPA and SAS modules. ! This is not clean and should be changed in the future. CALL bdy_init ! ==> CALL icb_init( rdt, nit000) ! initialise icebergs instance IF(lwp) WRITE(numout,*) 'Euler time step switch is ', neuler ! END SUBROUTINE nemo_init SUBROUTINE nemo_ctl !!---------------------------------------------------------------------- !! *** ROUTINE nemo_ctl *** !! !! ** Purpose : control print setting !! !! ** Method : - print namctl information and check some consistencies !!---------------------------------------------------------------------- ! IF(lwp) THEN ! control print WRITE(numout,*) WRITE(numout,*) 'nemo_ctl: Control prints' WRITE(numout,*) '~~~~~~~ ' WRITE(numout,*) ' Namelist namctl' WRITE(numout,*) ' run control (for debugging) ln_ctl = ', ln_ctl WRITE(numout,*) ' level of print nn_print = ', nn_print WRITE(numout,*) ' Start i indice for SUM control nn_ictls = ', nn_ictls WRITE(numout,*) ' End i indice for SUM control nn_ictle = ', nn_ictle WRITE(numout,*) ' Start j indice for SUM control nn_jctls = ', nn_jctls WRITE(numout,*) ' End j indice for SUM control nn_jctle = ', nn_jctle WRITE(numout,*) ' number of proc. following i nn_isplt = ', nn_isplt WRITE(numout,*) ' number of proc. following j nn_jsplt = ', nn_jsplt WRITE(numout,*) ' timing activated (0/1) nn_timing = ', nn_timing ENDIF ! nprint = nn_print ! convert DOCTOR namelist names into OLD names nictls = nn_ictls nictle = nn_ictle njctls = nn_jctls njctle = nn_jctle isplt = nn_isplt jsplt = nn_jsplt IF(lwp) THEN ! control print WRITE(numout,*) WRITE(numout,*) 'namcfg : configuration initialization through namelist read' WRITE(numout,*) '~~~~~~~ ' WRITE(numout,*) ' Namelist namcfg' WRITE(numout,*) ' read domain configuration files ln_read_cfg = ', ln_read_cfg WRITE(numout,*) ' filename to be read cn_domcfg = ', TRIM(cn_domcfg) WRITE(numout,*) ' write configuration definition files ln_write_cfg = ', ln_write_cfg WRITE(numout,*) ' filename to be written cn_domcfg_out = ', TRIM(cn_domcfg_out) WRITE(numout,*) ' use file attribute if exists as i/p j-start ln_use_jattr = ', ln_use_jattr ENDIF ! ! Parameter control ! IF( ln_ctl ) THEN ! sub-domain area indices for the control prints IF( lk_mpp .AND. jpnij > 1 ) THEN isplt = jpni ; jsplt = jpnj ; ijsplt = jpni*jpnj ! the domain is forced to the real split domain ELSE IF( isplt == 1 .AND. jsplt == 1 ) THEN CALL ctl_warn( ' - isplt & jsplt are equal to 1', & & ' - the print control will be done over the whole domain' ) ENDIF ijsplt = isplt * jsplt ! total number of processors ijsplt ENDIF IF(lwp) WRITE(numout,*)' - The total number of processors over which the' IF(lwp) WRITE(numout,*)' print control will be done is ijsplt : ', ijsplt ! ! ! indices used for the SUM control IF( nictls+nictle+njctls+njctle == 0 ) THEN ! print control done over the default area lsp_area = .FALSE. ELSE ! print control done over a specific area lsp_area = .TRUE. IF( nictls < 1 .OR. nictls > jpiglo ) THEN CALL ctl_warn( ' - nictls must be 1<=nictls>=jpiglo, it is forced to 1' ) nictls = 1 ENDIF IF( nictle < 1 .OR. nictle > jpiglo ) THEN CALL ctl_warn( ' - nictle must be 1<=nictle>=jpiglo, it is forced to jpiglo' ) nictle = jpiglo ENDIF IF( njctls < 1 .OR. njctls > jpjglo ) THEN CALL ctl_warn( ' - njctls must be 1<=njctls>=jpjglo, it is forced to 1' ) njctls = 1 ENDIF IF( njctle < 1 .OR. njctle > jpjglo ) THEN CALL ctl_warn( ' - njctle must be 1<=njctle>=jpjglo, it is forced to jpjglo' ) njctle = jpjglo ENDIF ENDIF ENDIF ! IF( 1_wp /= SIGN(1._wp,-0._wp) ) CALL ctl_stop( 'nemo_ctl: The intrinsec SIGN function follows ', & & 'f2003 standard. ' , & & 'Compile with key_nosignedzero enabled' ) ! END SUBROUTINE nemo_ctl SUBROUTINE nemo_closefile !!---------------------------------------------------------------------- !! *** ROUTINE nemo_closefile *** !! !! ** Purpose : Close the files !!---------------------------------------------------------------------- ! IF( lk_mpp ) CALL mppsync ! CALL iom_close ! close all input/output files managed by iom_* ! IF( numstp /= -1 ) CLOSE( numstp ) ! time-step file IF( numnam_ref /= -1 ) CLOSE( numnam_ref ) ! oce reference namelist IF( numnam_cfg /= -1 ) CLOSE( numnam_cfg ) ! oce configuration namelist IF( lwm.AND.numond /= -1 ) CLOSE( numond ) ! oce output namelist IF( numnam_ice_ref /= -1 ) CLOSE( numnam_ice_ref ) ! ice reference namelist IF( numnam_ice_cfg /= -1 ) CLOSE( numnam_ice_cfg ) ! ice configuration namelist IF( lwm.AND.numoni /= -1 ) CLOSE( numoni ) ! ice output namelist IF( numevo_ice /= -1 ) CLOSE( numevo_ice ) ! ice variables (temp. evolution) IF( numout /= 6 ) CLOSE( numout ) ! standard model output file ! numout = 6 ! redefine numout in case it is used after this point... ! END SUBROUTINE nemo_closefile SUBROUTINE nemo_alloc !!---------------------------------------------------------------------- !! *** ROUTINE nemo_alloc *** !! !! ** Purpose : Allocate all the dynamic arrays of the OPA modules !! !! ** Method : !!---------------------------------------------------------------------- USE diawri , ONLY: dia_wri_alloc USE dom_oce , ONLY: dom_oce_alloc USE bdy_oce , ONLY: ln_bdy, bdy_oce_alloc USE oce ! clem: mandatory for LIM3 because needed for bdy arrays ! INTEGER :: ierr !!---------------------------------------------------------------------- ! ierr = dia_wri_alloc () ierr = ierr + dom_oce_alloc () ! ocean domain ierr = ierr + oce_alloc () ! (tsn...) needed for agrif and/or lim3 and bdy ierr = ierr + bdy_oce_alloc () ! bdy masks (incl. initialization) ! IF( lk_mpp ) CALL mpp_sum( ierr ) IF( ierr /= 0 ) CALL ctl_stop( 'STOP', 'nemo_alloc : unable to allocate standard ocean arrays' ) ! END SUBROUTINE nemo_alloc SUBROUTINE nemo_partition( num_pes ) !!---------------------------------------------------------------------- !! *** ROUTINE nemo_partition *** !! !! ** Purpose : !! !! ** Method : !!---------------------------------------------------------------------- INTEGER, INTENT(in) :: num_pes ! The number of MPI processes we have ! INTEGER, PARAMETER :: nfactmax = 20 INTEGER :: nfact ! The no. of factors returned INTEGER :: ierr ! Error flag INTEGER :: ji INTEGER :: idiff, mindiff, imin ! For choosing pair of factors that are closest in value INTEGER, DIMENSION(nfactmax) :: ifact ! Array of factors !!---------------------------------------------------------------------- ! ierr = 0 ! CALL factorise( ifact, nfactmax, nfact, num_pes, ierr ) ! IF( nfact <= 1 ) THEN WRITE (numout, *) 'WARNING: factorisation of number of PEs failed' WRITE (numout, *) ' : using grid of ',num_pes,' x 1' jpnj = 1 jpni = num_pes ELSE ! Search through factors for the pair that are closest in value mindiff = 1000000 imin = 1 DO ji = 1, nfact-1, 2 idiff = ABS( ifact(ji) - ifact(ji+1) ) IF( idiff < mindiff ) THEN mindiff = idiff imin = ji ENDIF END DO jpnj = ifact(imin) jpni = ifact(imin + 1) ENDIF ! jpnij = jpni*jpnj ! END SUBROUTINE nemo_partition SUBROUTINE factorise( kfax, kmaxfax, knfax, kn, kerr ) !!---------------------------------------------------------------------- !! *** ROUTINE factorise *** !! !! ** Purpose : return the prime factors of n. !! knfax factors are returned in array kfax which is of !! maximum dimension kmaxfax. !! ** Method : !!---------------------------------------------------------------------- INTEGER , INTENT(in ) :: kn, kmaxfax INTEGER , INTENT( out) :: kerr, knfax INTEGER, DIMENSION(kmaxfax), INTENT( out) :: kfax ! INTEGER :: ifac, jl, inu INTEGER, PARAMETER :: ntest = 14 INTEGER, DIMENSION(ntest) :: ilfax !!---------------------------------------------------------------------- ! ! lfax contains the set of allowed factors. ilfax(:) = (/(2**jl,jl=ntest,1,-1)/) ! ! Clear the error flag and initialise output vars kerr = 0 kfax = 1 knfax = 0 ! ! Find the factors of n. IF( kn == 1 ) GOTO 20 ! nu holds the unfactorised part of the number. ! knfax holds the number of factors found. ! l points to the allowed factor list. ! ifac holds the current factor. ! inu = kn knfax = 0 ! DO jl = ntest, 1, -1 ! ifac = ilfax(jl) IF( ifac > inu ) CYCLE ! Test whether the factor will divide. IF( MOD(inu,ifac) == 0 ) THEN ! knfax = knfax + 1 ! Add the factor to the list IF( knfax > kmaxfax ) THEN kerr = 6 write (*,*) 'FACTOR: insufficient space in factor array ', knfax return ENDIF kfax(knfax) = ifac ! Store the other factor that goes with this one knfax = knfax + 1 kfax(knfax) = inu / ifac !WRITE (*,*) 'ARPDBG, factors ',knfax-1,' & ',knfax,' are ', kfax(knfax-1),' and ',kfax(knfax) ENDIF ! END DO ! 20 CONTINUE ! Label 20 is the exit point from the factor search loop. ! END SUBROUTINE factorise #if defined key_mpp_mpi SUBROUTINE nemo_northcomms !!---------------------------------------------------------------------- !! *** ROUTINE nemo_northcomms *** !! ** Purpose : Setup for north fold exchanges with explicit !! point-to-point messaging !! !! ** Method : Initialization of the northern neighbours lists. !!---------------------------------------------------------------------- !! 1.0 ! 2011-10 (A. C. Coward, NOCS & J. Donners, PRACE) !! 2.0 ! 2013-06 Setup avoiding MPI communication (I. Epicoco, S. Mocavero, CMCC) !!---------------------------------------------------------------------- INTEGER :: sxM, dxM, sxT, dxT, jn INTEGER :: njmppmax !!---------------------------------------------------------------------- ! njmppmax = MAXVAL( njmppt ) ! !initializes the north-fold communication variables isendto(:) = 0 nsndto = 0 ! !if I am a process in the north IF ( njmpp == njmppmax ) THEN !sxM is the first point (in the global domain) needed to compute the !north-fold for the current process sxM = jpiglo - nimppt(narea) - nlcit(narea) + 1 !dxM is the last point (in the global domain) needed to compute the !north-fold for the current process dxM = jpiglo - nimppt(narea) + 2 !loop over the other north-fold processes to find the processes !managing the points belonging to the sxT-dxT range DO jn = 1, jpni !sxT is the first point (in the global domain) of the jn !process sxT = nfiimpp(jn, jpnj) !dxT is the last point (in the global domain) of the jn !process dxT = nfiimpp(jn, jpnj) + nfilcit(jn, jpnj) - 1 IF ((sxM .gt. sxT) .AND. (sxM .lt. dxT)) THEN nsndto = nsndto + 1 isendto(nsndto) = jn ELSEIF ((sxM .le. sxT) .AND. (dxM .ge. dxT)) THEN nsndto = nsndto + 1 isendto(nsndto) = jn ELSEIF ((dxM .lt. dxT) .AND. (sxT .lt. dxM)) THEN nsndto = nsndto + 1 isendto(nsndto) = jn ENDIF END DO nfsloop = 1 nfeloop = nlci DO jn = 2,jpni-1 IF(nfipproc(jn,jpnj) .eq. (narea - 1)) THEN IF (nfipproc(jn - 1 ,jpnj) .eq. -1) THEN nfsloop = nldi ENDIF IF (nfipproc(jn + 1,jpnj) .eq. -1) THEN nfeloop = nlei ENDIF ENDIF END DO ENDIF l_north_nogather = .TRUE. END SUBROUTINE nemo_northcomms #else SUBROUTINE nemo_northcomms ! Dummy routine WRITE(*,*) 'nemo_northcomms: You should not have seen this print! error?' END SUBROUTINE nemo_northcomms #endif !!====================================================================== END MODULE nemogcm