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!SURFEX_LIC Copyright 1994-2014 Meteo-France
!SURFEX_LIC This is part of the SURFEX software governed by the CeCILL-C licence
!SURFEX_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt
!SURFEX_LIC for details. version 1.
! ################################################################
SUBROUTINE REGULAR_GRID_SPAWN(KLUOUT, &
KL1, KIMAX1,KJMAX1,PX1,PY1,PDX1,PDY1, &
KXOR, KYOR, KDXRATIO, KDYRATIO, &
KXSIZE, KYSIZE, &
KL2, KIMAX_C_ll,KJMAX_C_ll,PX2,PY2,PDX2,PDY2 )
! ################################################################
!
!!**** *REGULAR_GRID_SPAWN* - routine to read in namelist the horizontal grid
!!
!! PURPOSE
!! -------
!!
!!** METHOD
!! ------
!!
!! EXTERNAL
!! --------
!!
!!
!! IMPLICIT ARGUMENTS
!! ------------------
!!
!! REFERENCE
!! ---------
!!
!!
!! AUTHOR
!! ------
!! V. Masson *Meteo France*
!!
!! MODIFICATIONS
!! -------------
!! Original 01/2004
!! M.Moge 04/2015 Parallelization using routines from MNH/SURCOUCHE
!! M.Moge 06/2015 bug fix for reproductibility using UPDATE_NHALO1D
!! M.Moge 01/2016 bug fix for parallel execution with SPLIT2
ESCOBAR MUNOZ Juan
committed
!! Juan & Maxime 24/03/2016: bug fix in 002/pgd when proc have no data/empty intersection to send/recv
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!-------------------------------------------------------------------------------
!
!* 0. DECLARATIONS
! ------------
!
USE MODD_SURF_PAR, ONLY : NUNDEF
!
!
USE YOMHOOK ,ONLY : LHOOK, DR_HOOK
USE PARKIND1 ,ONLY : JPRB
USE MODD_SURF_ATM_n, ONLY : NIMAX_SURF_ll, NJMAX_SURF_ll
!
USE MODI_ABOR1_SFX
#ifdef MNH_PARALLEL
USE MODE_ll
USE MODE_MODELN_HANDLER
USE MODE_SPLITTING_ll, ONLY : SPLIT2, DEF_SPLITTING2
USE MODD_VAR_ll, ONLY : NPROC, IP, YSPLITTING
USE MODD_STRUCTURE_ll, ONLY : ZONE_ll, CRSPD_ll
USE MODD_PARAMETERS, ONLY : JPHEXT
USE MODE_TOOLS_ll, ONLY : INTERSECTION
USE MODE_EXCHANGE_ll, ONLY : SEND_RECV_FIELD
USE MODI_UPDATE_NHALO1D
#endif
!
IMPLICIT NONE
!
!* 0.1 Declarations of arguments
! -------------------------
!
INTEGER, INTENT(IN) :: KLUOUT ! output listing logical unit
INTEGER, INTENT(IN) :: KL1 ! total number of points KIMAX1 * KJMAX1
INTEGER, INTENT(IN) :: KIMAX1 ! number of points in x direction
INTEGER, INTENT(IN) :: KJMAX1 ! number of points in y direction
REAL, DIMENSION(KL1), INTENT(IN) :: PX1 ! X coordinate of all points
REAL, DIMENSION(KL1), INTENT(IN) :: PY1 ! Y coordinate of all points
REAL, DIMENSION(KL1), INTENT(IN) :: PDX1 ! X mesh size of all points
REAL, DIMENSION(KL1), INTENT(IN) :: PDY1 ! Y mesh size of all points
INTEGER, INTENT(IN) :: KXOR ! position of modified bottom left point
INTEGER, INTENT(IN) :: KYOR ! according to initial grid
INTEGER, INTENT(IN) :: KXSIZE ! number of grid meshes in initial grid to be
INTEGER, INTENT(IN) :: KYSIZE ! covered by the modified grid
INTEGER, INTENT(IN) :: KDXRATIO ! resolution ratio between modified grid
INTEGER, INTENT(IN) :: KDYRATIO ! and initial grid
INTEGER, INTENT(IN) :: KL2 ! total number of points KIMAX_C_ll * KJMAX_C_ll
#ifdef MNH_PARALLEL
INTEGER, INTENT(INOUT) :: KIMAX_C_ll ! number of points in x direction (glb on entry, lcl on exit)
INTEGER, INTENT(INOUT) :: KJMAX_C_ll ! number of points in y direction (glb on entry, lcl on exit)
REAL, DIMENSION(:),ALLOCATABLE, INTENT(OUT) :: PX2 ! X coordinate of all points
REAL, DIMENSION(:),ALLOCATABLE, INTENT(OUT) :: PY2 ! Y coordinate of all points
REAL, DIMENSION(:),ALLOCATABLE, INTENT(OUT) :: PDX2 ! X mesh size of all points
REAL, DIMENSION(:),ALLOCATABLE, INTENT(OUT) :: PDY2 ! Y mesh size of all points
#else
INTEGER, INTENT(IN) :: KIMAX_C_ll ! number of points in x direction
INTEGER, INTENT(IN) :: KJMAX_C_ll ! number of points in y direction
REAL, DIMENSION(KL2), INTENT(OUT) :: PX2 ! X coordinate of all points
REAL, DIMENSION(KL2), INTENT(OUT) :: PY2 ! Y coordinate of all points
REAL, DIMENSION(KL2), INTENT(OUT) :: PDX2 ! X mesh size of all points
REAL, DIMENSION(KL2), INTENT(OUT) :: PDY2 ! Y mesh size of all points
#endif
!
!* 0.2 Declarations of local variables
! -------------------------------
!
!* coarse/father grid
!
REAL, DIMENSION(:), ALLOCATABLE :: ZXM1 ! X coordinate of center of mesh (IIMAX1 points)
REAL, DIMENSION(:), ALLOCATABLE :: ZYM1 ! Y coordinate of center of mesh (IJMAX1 points)
REAL, DIMENSION(:), ALLOCATABLE :: ZXHAT1 ! X coordinate of left side (IIMAX1+1 points)
REAL, DIMENSION(:), ALLOCATABLE :: ZYHAT1 ! Y coordinate of bottom side (IJMAX1+1 points)
REAL, DIMENSION(:,:,:), ALLOCATABLE :: ZXHAT1_3D, ZYHAT1_3D ! ZXHAT1 and ZXHAT1 copied in a 3D field for the communications
!
!* fine/son grid
!
REAL, DIMENSION(:), ALLOCATABLE :: ZXHAT2 ! X coordinate of left side (IIMAX2 points)
REAL, DIMENSION(:), ALLOCATABLE :: ZYHAT2 ! Y coordinate of bottom side (IJMAX2 points)
REAL, DIMENSION(:), ALLOCATABLE :: ZXHAT2_F_TMP
REAL, DIMENSION(:), ALLOCATABLE :: ZYHAT2_F_TMP
REAL, DIMENSION(:,:,:), ALLOCATABLE :: ZXHAT2_F, ZYHAT2_F ! temporary 3D fields to communicate the values on the father grid to the local son subgrid
!
!* other variables
!
INTEGER :: JL ! loop counter
INTEGER :: JI,JJ ! loop controls relatively to modified grid
REAL(KIND=JPRB) :: ZHOOK_HANDLE
INTEGER :: IMI
INTEGER :: IINFO_ll
INTEGER :: IXDOMAINS, IYDOMAINS ! number of subdomains in X and Y directions
LOGICAL :: GPREM ! needed for DEF_SPLITTING2, true if NPROC is a prime number
INTEGER :: IXOR_F_ll, IYOR_F_ll ! origin of local father subdomain in global coordinates
INTEGER :: IXDIM_C, IYDIM_C ! size of local son subdomain (in coarse/father grid)
INTEGER :: IXOR_C_ll, IYOR_C_ll ! origin of local son subdomain (in global fine/son grid)
INTEGER :: IXEND_C_ll, IYEND_C_ll ! end of local son subdomain (in global fine/son grid)
INTEGER :: IXOR_C_COARSE_ll, IYOR_C_COARSE_ll ! origin of local son subdomain (in global coarse/father grid)
INTEGER :: IIMAX_C ! number of points in x direction in local portion of son model (in fine grid)
INTEGER :: IJMAX_C ! number of points in y direction in local portion of son model (in fine grid)
REAL, DIMENSION(KDXRATIO) :: ZCOEFX ! ponderation coefficients for linear interpolation
REAL, DIMENSION(KDYRATIO) :: ZCOEFY ! ponderation coefficients for linear interpolation
!
! structures for the partitionning
!
#ifdef MNH_PARALLEL
TYPE(ZONE_ll), DIMENSION(NPROC) :: TZSPLITTING_C !splitting of child model
TYPE(ZONE_ll), ALLOCATABLE, DIMENSION(:) :: TZCOARSEFATHER ! Coarse father grid splitting
TYPE(ZONE_ll), ALLOCATABLE, DIMENSION(:) :: TZCOARSESONSPLIT ! coarse son grid intersection with local father subdomain : coordinates in the father grid
!
! structures for the communications
!
TYPE(ZONE_ll), ALLOCATABLE, DIMENSION(:) :: TZSEND, TZRECV
TYPE(CRSPD_ll), POINTER :: TZCRSPDSEND, TZCRSPDRECV
TYPE(CRSPD_ll), ALLOCATABLE, DIMENSION(:), TARGET :: TZCRSPDSENDTAB, TZCRSPDRECVTAB
#endif
!
INTEGER :: J
INTEGER :: INBMSG
INTEGER :: ICARD
INTEGER :: ICARDDIF
!
!------------------------------------------------------------------------------
!
!* 1. Coherence tests
! ---------------
!
!* tests
!
IF (LHOOK) CALL DR_HOOK('REGULAR_GRID_SPAWN',0,ZHOOK_HANDLE)
IF ( KXOR+KXSIZE-1 > NIMAX_SURF_ll ) THEN
WRITE(KLUOUT,*) 'spawned domain is not contained in the input domain'
WRITE(KLUOUT,*) 'IXOR = ', KXOR, ' IXSIZE = ', KXSIZE,&
' with NIMAX(file) = ', NIMAX_SURF_ll
CALL ABOR1_SFX('REGULAR_GRID_SPAWN: (1) SPAWNED DOMAIN NOT CONTAINED IN INPUT DOMAIN')
END IF
IF ( KYOR+KYSIZE-1 > NJMAX_SURF_ll ) THEN
WRITE(KLUOUT,*) 'spawned domain is not contained in the input domain'
WRITE(KLUOUT,*) 'IYOR = ', KYOR, ' IYSIZE = ', KYSIZE,&
' with NJMAX(file) = ', NJMAX_SURF_ll
CALL ABOR1_SFX('REGULAR_GRID_SPAWN: (2) SPAWNED DOMAIN NOT CONTAINED IN INPUT DOMAIN')
END IF
!
!------------------------------------------------------------------------------
!
!* 2. Partitionning of the son subdomain
! --------------------------------------------------------------
!
#ifdef MNH_PARALLEL
! get origin of local father subdomain in global coordinates
!
CALL GET_OR_ll( "B", IXOR_F_ll, IYOR_F_ll )
!
! origin of local son subdomain in global father coordinates
!
!IXOR_C_COARSE_ll = MAX( IXOR_F_ll, KXOR+1 )
!IYOR_C_COARSE_ll = MAX( IYOR_F_ll, KYOR+1 )
IXOR_C_COARSE_ll = MAX( IXOR_F_ll-1, KXOR ) ! we have to add one point on the west and south sides -> hence the "- 1"
IYOR_C_COARSE_ll = MAX( IYOR_F_ll-1, KYOR ) ! we have to add one point on the west and south sides -> hence the "- 1"
!
ALLOCATE(TZCOARSEFATHER(NPROC))
ALLOCATE(TZCOARSESONSPLIT(NPROC))
!
! compute father partitioning
!
CALL SPLIT2(NIMAX_SURF_ll, NJMAX_SURF_ll, 1, NPROC,TZCOARSEFATHER, YSPLITTING)
! we don't want the halo
DO J = 1, NPROC
TZCOARSEFATHER(J)%NXOR = TZCOARSEFATHER(J)%NXOR - JPHEXT
TZCOARSEFATHER(J)%NYOR = TZCOARSEFATHER(J)%NYOR - JPHEXT
TZCOARSEFATHER(J)%NXEND = TZCOARSEFATHER(J)%NXEND - JPHEXT
TZCOARSEFATHER(J)%NYEND = TZCOARSEFATHER(J)%NYEND - JPHEXT
ENDDO
!
! partition son domain on father grid (with global coordinates on father grid)
!
! we have to add one point on the west and south sides -> hence the "- 1"
! Warning : we cannot just call SPLIT2(KXSIZE, KYSIZE, 1, NPROC, TZCOARSESONSPLIT, YSPLITTING) as it would not
! necessarily split the son domain the same way the father domain was splitted
! example : if father domain is 30x40 and son domain is 6x5 (in father grid dimensions) then
! with NPROC = 2, SPLIT2 will split father domain along Y dimension -> 30x20 local domains
! but SPLIT2 will split son domain along X dimension -> 3x5 local domains.
! therefore we have to use DEF_SPLITTING2 and force the decomposition in the call to SPLIT2
! we want the same domain partitioning for the child domain and for the father domain
CALL DEF_SPLITTING2(IXDOMAINS,IYDOMAINS,NIMAX_SURF_ll,NJMAX_SURF_ll,NPROC,GPREM)
CALL SPLIT2(KXSIZE, KYSIZE, 1, NPROC, TZCOARSESONSPLIT, YSPLITTING, IXDOMAINS, IYDOMAINS)
! compute the local size of son grid
! KIMAX_C_ll, KJMAX_C_ll are the global sizes of son domain
IIMAX_C = ( TZCOARSESONSPLIT(IP)%NXEND - TZCOARSESONSPLIT(IP)%NXOR + 1 ) * KDXRATIO
IJMAX_C = ( TZCOARSESONSPLIT(IP)%NYEND - TZCOARSESONSPLIT(IP)%NYOR + 1 ) * KDYRATIO
! get the coordinates of the son domain partition on father grid
DO J = 1, NPROC
TZCOARSESONSPLIT(J)%NXOR = TZCOARSESONSPLIT(J)%NXOR + KXOR - JPHEXT - 1
TZCOARSESONSPLIT(J)%NYOR = TZCOARSESONSPLIT(J)%NYOR + KYOR - JPHEXT - 1
TZCOARSESONSPLIT(J)%NXEND = TZCOARSESONSPLIT(J)%NXEND + KXOR - JPHEXT
TZCOARSESONSPLIT(J)%NYEND = TZCOARSESONSPLIT(J)%NYEND + KYOR - JPHEXT
ENDDO
!
! compute the local size of son grid
! KIMAX_C_ll, KJMAX_C_ll are the global sizes of son domain
!
!CALL SPLIT2 ( KIMAX_C_ll, KJMAX_C_ll, 1, NPROC, TZSPLITTING_C, YSPLITTING )
!IXOR_C_ll = TZSPLITTING_C(IP)%NXOR - JPHEXT
!IXEND_C_ll = TZSPLITTING_C(IP)%NXEND - JPHEXT
!IYOR_C_ll = TZSPLITTING_C(IP)%NYOR - JPHEXT
!IYEND_C_ll = TZSPLITTING_C(IP)%NYEND - JPHEXT
!!
!IIMAX_C = IXEND_C_ll - IXOR_C_ll + 1
!IJMAX_C = IYEND_C_ll - IYOR_C_ll + 1
!IIMAX_C = ( TZCOARSESONSPLIT(IP)%NXEND - TZCOARSESONSPLIT(IP)%NXOR + 1 ) * KDXRATIO
!IJMAX_C = ( TZCOARSESONSPLIT(IP)%NYEND - TZCOARSESONSPLIT(IP)%NYOR + 1 ) * KDYRATIO
!
!------------------------------------------------------------------------------
!
!* 3. Preparing the structures for the communications for the initialization of son fields using father fields
! --------------------------------------------------------------
!
!
! ######## initializing the structures for the SEND ########
!
ALLOCATE(TZSEND(NPROC))
CALL INTERSECTION( TZCOARSESONSPLIT, NPROC, TZCOARSEFATHER(IP), TZSEND)
! il faut initialiser le TAG de manière a avoir un meme tag unique pour le send et le recv :
! on concatene le num du proc qui envoie et le num du proc qui recoit
DO J = 1, NPROC
IF ( TZSEND(J)%NUMBER > 0 ) THEN
IF (TZSEND(J)%NUMBER == 1) THEN
TZSEND(J)%MSSGTAG = IP * 10 + 1
ELSE
TZSEND(J)%MSSGTAG = IP * 10**(CEILING(LOG10(real(TZSEND(J)%NUMBER)))) + TZSEND(J)%NUMBER
ENDIF
ENDIF
ENDDO
! switching to local coordinates
DO J = 1, NPROC
IF ( TZSEND(J)%NUMBER > 0 ) THEN
TZSEND(J)%NXOR = TZSEND(J)%NXOR - IXOR_F_ll + 1
TZSEND(J)%NXEND = TZSEND(J)%NXEND - IXOR_F_ll + 1
TZSEND(J)%NYOR = TZSEND(J)%NYOR - IYOR_F_ll + 1
TZSEND(J)%NYEND = TZSEND(J)%NYEND - IYOR_F_ll + 1
ENDIF
ENDDO
! we do not need the Z dimension
DO J = 1, NPROC
IF ( TZSEND(J)%NUMBER > 0 ) THEN
TZSEND(J)%NZOR = 1
TZSEND(J)%NZEND = 1
ENDIF
ENDDO
! switching from an array of CRSPD_ll to a CRSPD_ll pointer
INBMSG = 0
DO J = 1, NPROC
IF ( TZSEND(J)%NUMBER > 0 ) THEN
INBMSG = INBMSG+1
ENDIF
ENDDO
IF ( INBMSG > 0 ) THEN
ALLOCATE( TZCRSPDSENDTAB(INBMSG) )
ICARD = 0
ICARDDIF = 0
DO J = 1, NPROC
IF ( TZSEND(J)%NUMBER > 0 ) THEN
ICARD = ICARD+1
IF ( TZSEND(ICARD)%NUMBER /= IP ) THEN
ICARDDIF = ICARDDIF+1
ENDIF
TZCRSPDSENDTAB(ICARD)%TELT = TZSEND(J)
IF ( ICARD == INBMSG ) THEN
TZCRSPDSENDTAB(ICARD)%TNEXT => NULL()
ELSE
TZCRSPDSENDTAB(ICARD)%TNEXT => TZCRSPDSENDTAB(ICARD+1)
ENDIF
ENDIF
ENDDO
DO J = 1, ICARD
TZCRSPDSENDTAB(J)%NCARD = ICARD
TZCRSPDSENDTAB(J)%NCARDDIF = ICARDDIF
ENDDO
ELSE
!il faut tout de meme mettre un element de taille 0 dans TZCRSPDSENDTAB
!sinon SEND_RECV_FIELD plante en 02
ALLOCATE( TZCRSPDSENDTAB(1) )
ICARD = 0
ICARDDIF = 0
TZCRSPDSENDTAB(1)%TELT = TZSEND(1)
TZCRSPDSENDTAB(1)%TNEXT => NULL()
TZCRSPDSENDTAB(1)%NCARD = 0
TZCRSPDSENDTAB(1)%NCARDDIF = 0
ENDIF
ESCOBAR MUNOZ Juan
committed
IF (ICARD > 0) THEN
TZCRSPDSEND => TZCRSPDSENDTAB(1)
ESCOBAR MUNOZ Juan
committed
ELSE
TZCRSPDSEND => NULL()
ENDIF
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!
! ######## initializing the structures for the RECV ########
!
ALLOCATE(TZRECV(NPROC))
CALL INTERSECTION( TZCOARSEFATHER, NPROC, TZCOARSESONSPLIT(IP), TZRECV )
! il faut initialiser le TAG de manière a avoir un meme tag unique pour le send et le recv :
! on concatene le num du proc qui envoie et le num du proc qui recoit
DO J = 1, NPROC
IF ( TZRECV(J)%NUMBER > 0 ) THEN
IF (IP == 1) THEN
TZRECV(J)%MSSGTAG = TZRECV(J)%NUMBER * 10 + 1
ELSE
TZRECV(J)%MSSGTAG = TZRECV(J)%NUMBER * 10**(CEILING(LOG10(real(IP)))) + IP
ENDIF
ENDIF
ENDDO
! switching to local coordinates
DO J = 1, NPROC
IF ( TZRECV(J)%NUMBER > 0 ) THEN
TZRECV(J)%NXOR = TZRECV(J)%NXOR - TZCOARSESONSPLIT(IP)%NXOR + 1
TZRECV(J)%NXEND = TZRECV(J)%NXEND - TZCOARSESONSPLIT(IP)%NXOR + 1
TZRECV(J)%NYOR = TZRECV(J)%NYOR - TZCOARSESONSPLIT(IP)%NYOR + 1
TZRECV(J)%NYEND = TZRECV(J)%NYEND - TZCOARSESONSPLIT(IP)%NYOR + 1
ENDIF
ENDDO
! we do not need the Z dimension
DO J = 1, NPROC
IF ( TZRECV(J)%NUMBER > 0 ) THEN
TZRECV(J)%NZOR = 1
TZRECV(J)%NZEND = 1
ENDIF
ENDDO
! switching from an array of CRSPD_ll to a CRSPD_ll pointer
INBMSG = 0
DO J = 1, NPROC
IF ( TZRECV(J)%NUMBER > 0 ) THEN
INBMSG = INBMSG+1
ENDIF
ENDDO
IF ( INBMSG > 0 ) THEN
ALLOCATE( TZCRSPDRECVTAB(INBMSG) )
ICARD = 0
ICARDDIF = 0
DO J = 1, NPROC
IF ( TZRECV(J)%NUMBER > 0 ) THEN
ICARD = ICARD+1
IF ( TZRECV(ICARD)%NUMBER /= IP ) THEN
ICARDDIF = ICARDDIF+1
ENDIF
TZCRSPDRECVTAB(ICARD)%TELT = TZRECV(J)
IF ( ICARD == INBMSG ) THEN
TZCRSPDRECVTAB(ICARD)%TNEXT => NULL()
ELSE
TZCRSPDRECVTAB(ICARD)%TNEXT => TZCRSPDRECVTAB(ICARD+1)
ENDIF
ENDIF
ENDDO
DO J = 1, ICARD
TZCRSPDRECVTAB(J)%NCARD = ICARD
TZCRSPDRECVTAB(J)%NCARDDIF = ICARDDIF
ENDDO
ELSE
ALLOCATE( TZCRSPDRECVTAB(1) )
ICARD = 0
ICARDDIF = 0
ESCOBAR MUNOZ Juan
committed
TZCRSPDRECVTAB(1)%TELT = TZRECV(1)
TZCRSPDRECVTAB(1)%TNEXT => NULL()
TZCRSPDRECVTAB(1)%NCARD = 0
TZCRSPDRECVTAB(1)%NCARDDIF = 0
ENDIF
ESCOBAR MUNOZ Juan
committed
IF (ICARD > 0) THEN
TZCRSPDRECV => TZCRSPDRECVTAB(1)
ESCOBAR MUNOZ Juan
committed
ELSE
TZCRSPDRECV => NULL()
ENDIF
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#else
IIMAX_C = KIMAX_C_ll
IJMAX_C = KJMAX_C_ll
#endif
!
!------------------------------------------------------------------------------
!
!* 4. Center of mesh coordinate arrays for each direction separately
! --------------------------------------------------------------
!
! allocate the fields on the local son grid
!
#ifdef MNH_PARALLEL
ALLOCATE(PX2(IIMAX_C*IJMAX_C))
ALLOCATE(PY2(IIMAX_C*IJMAX_C))
ALLOCATE(PDX2(IIMAX_C*IJMAX_C))
ALLOCATE(PDY2(IIMAX_C*IJMAX_C))
#endif
ALLOCATE(ZXHAT2(IIMAX_C+1))
ALLOCATE(ZYHAT2(IJMAX_C+1))
!
! allocate the fields on the local father grid
!
ALLOCATE(ZXM1 (KIMAX1))
ALLOCATE(ZYM1 (KJMAX1))
ALLOCATE(ZXHAT1(KIMAX1+1))
ALLOCATE(ZYHAT1(KJMAX1+1))
!
ZXM1(:) = PX1(1:KIMAX1)
DO JL=1,KL1
IF (MOD(JL,KIMAX1)==0) ZYM1(JL/KIMAX1) = PY1(JL)
END DO
!
!------------------------------------------------------------------------------
!
!* 5. side of mesh coordinate arrays for each direction separately
! ------------------------------------------------------------
!
!
IF (KIMAX1==1) THEN
ZXHAT1(1) = ZXM1(1) - 0.5 * PDX1(1)
ZXHAT1(2) = ZXM1(1) + 0.5 * PDX1(1)
ELSE
ZXHAT1(1) = 1.5 * ZXM1(1) - 0.5 * ZXM1(2)
DO JI=2,KIMAX1
ZXHAT1(JI) = 0.5 * ZXM1(JI-1) + 0.5 * ZXM1(JI)
END DO
ZXHAT1(KIMAX1+1) = 1.5 * ZXM1(KIMAX1) - 0.5 * ZXM1(KIMAX1-1)
END IF
!
IF (KJMAX1==1) THEN
ZYHAT1(1) = ZYM1(1) - 0.5 * PDY1(1)
ZYHAT1(2) = ZYM1(1) + 0.5 * PDY1(1)
ELSE
ZYHAT1(1) = 1.5 * ZYM1(1) - 0.5 * ZYM1(2)
DO JJ=2,KJMAX1
ZYHAT1(JJ) = 0.5 * ZYM1(JJ-1) + 0.5 * ZYM1(JJ)
END DO
ZYHAT1(KJMAX1+1) = 1.5 * ZYM1(KJMAX1) - 0.5 * ZYM1(KJMAX1-1)
END IF
#ifdef MNH_PARALLEL
!
! do the communication
!
IXDIM_C = TZCOARSESONSPLIT(IP)%NXEND-TZCOARSESONSPLIT(IP)%NXOR+1
IYDIM_C = TZCOARSESONSPLIT(IP)%NYEND-TZCOARSESONSPLIT(IP)%NYOR+1
ALLOCATE(ZXHAT2_F(IXDIM_C,IYDIM_C,1))
ALLOCATE(ZYHAT2_F(IXDIM_C,IYDIM_C,1))
ALLOCATE(ZXHAT1_3D(KIMAX1,KJMAX1,1))
ALLOCATE(ZYHAT1_3D(KIMAX1,KJMAX1,1))
ZXHAT1_3D(:,:,:) = 0
ZYHAT1_3D(:,:,:) = 0
ZXHAT2_F(:,:,:) = 0
ZYHAT2_F(:,:,:) = 0
DO J=1, KJMAX1
ZXHAT1_3D(:,J,1) = ZXHAT1(1:KIMAX1)
ENDDO
DO J=1, KIMAX1
ZYHAT1_3D(J,:,1) = ZYHAT1(1:KJMAX1)
ENDDO
CALL SEND_RECV_FIELD( TZCRSPDSEND, TZCRSPDRECV, ZXHAT1_3D, ZXHAT2_F, IINFO_ll)
CALL SEND_RECV_FIELD( TZCRSPDSEND, TZCRSPDRECV, ZYHAT1_3D, ZYHAT2_F, IINFO_ll)
!
! We have to copy the entries of ZXHAT1_3D and ZYHAT1_3D that are local to the current process,
! and that are therefore not communicated in SEND_RECV_FIELD, in ZXHAT2_F and ZYHAT2_F
!
IF ( TZSEND(IP)%NUMBER /= 0 ) THEN !if there are entries of ZXHAT1_3D and ZYHAT1_3D that are local to the current process
! DO J=TZSEND(IP)%NXOR-KXOR,TZSEND(IP)%NXEND-KXOR
ZXHAT2_F( TZRECV(IP)%NXOR:TZRECV(IP)%NXEND, 1, 1) = ZXHAT1_3D( TZSEND(IP)%NXOR:TZSEND(IP)%NXEND, 1, 1)
! ENDDO
! DO J=TZSEND(IP)%NYOR-KYOR,TZSEND(IP)%NYEND-KYOR
ZYHAT2_F( 1,TZRECV(IP)%NYOR:TZRECV(IP)%NYEND, 1) = ZYHAT1_3D( 1,TZSEND(IP)%NYOR:TZSEND(IP)%NYEND, 1)
! ENDDO
ENDIF
!
! We need one halo point on the east and north sides of each local subdomain to do a proper interpolation
!
ALLOCATE( ZXHAT2_F_TMP(IXDIM_C+1) )
ALLOCATE( ZYHAT2_F_TMP(IYDIM_C+1) )
ZXHAT2_F_TMP(:) = 0.
ZYHAT2_F_TMP(:) = 0.
ZXHAT2_F_TMP(1:IXDIM_C) = ZXHAT2_F(:,1,1)
ZYHAT2_F_TMP(1:IYDIM_C) = ZYHAT2_F(1,:,1)
! we want the same domain partitioning for the child domain and for the father domain
CALL DEF_SPLITTING2(IXDOMAINS,IYDOMAINS,NIMAX_SURF_ll,NJMAX_SURF_ll,NPROC,GPREM)
CALL SPLIT2(KXSIZE, KYSIZE, 1, NPROC, TZCOARSESONSPLIT, YSPLITTING, IXDOMAINS, IYDOMAINS)
CALL UPDATE_NHALO1D( 1, ZXHAT2_F_TMP, KXSIZE, KYSIZE,TZCOARSESONSPLIT(IP)%NXOR, &
TZCOARSESONSPLIT(IP)%NXEND,TZCOARSESONSPLIT(IP)%NYOR,TZCOARSESONSPLIT(IP)%NYEND, 'XX ')
CALL UPDATE_NHALO1D( 1, ZYHAT2_F_TMP, KXSIZE, KYSIZE,TZCOARSESONSPLIT(IP)%NXOR, &
TZCOARSESONSPLIT(IP)%NXEND,TZCOARSESONSPLIT(IP)%NYOR,TZCOARSESONSPLIT(IP)%NYEND, 'YY ')
#endif
!
!------------------------------------------------------------------------------
!
!* 6. Interpolation of coordinate arrays for each direction separately
! ----------------------------------------------------------------
!
!* X coordinate array
!
DO J=0,KDXRATIO-1
ZCOEFX(J+1) = FLOAT(J)/FLOAT(KDXRATIO)
ENDDO
DO JI=1,IXDIM_C-1
DO JJ=1,KDXRATIO
ZXHAT2((JI-1)*KDXRATIO+JJ)=(1.-ZCOEFX(JJ))*ZXHAT2_F(JI,1,1)+ZCOEFX(JJ)*ZXHAT2_F(JI+1,1,1)
ENDDO
ENDDO
IF (IIMAX_C==1) THEN
ZXHAT2(IIMAX_C+1) = ZXHAT2(IIMAX_C) + ZXHAT2_F(JI,1,1) - ZXHAT2_F(JI,1,1)
ELSE
#ifdef MNH_PARALLEL
IF ( LEAST_ll() ) THEN ! the east halo point does not have a correct value so have to do an extrapolation
ZXHAT2(IIMAX_C+1) = 2. * ZXHAT2(IIMAX_C) - ZXHAT2(IIMAX_C-1)
ELSE
ZXHAT2(IIMAX_C+1)=(1.-ZCOEFX(1))*ZXHAT2_F_TMP(IXDIM_C)+ZCOEFX(1)*ZXHAT2_F_TMP(IXDIM_C+1)
ENDIF
#else
ZXHAT2(IIMAX_C+1) = 2. * ZXHAT2(IIMAX_C) - ZXHAT2(IIMAX_C-1)
#endif
END IF
!
!* Y coordinate array
!
DO J=0,KDYRATIO-1
ZCOEFY(J+1) = FLOAT(J)/FLOAT(KDYRATIO)
ENDDO
DO JI=1,IYDIM_C-1
DO JJ=1,KDYRATIO
ZYHAT2((JI-1)*KDYRATIO+JJ)=(1.-ZCOEFY(JJ))*ZYHAT2_F(1,JI,1)+ZCOEFY(JJ)*ZYHAT2_F(1,JI+1,1)
ENDDO
ENDDO
IF (IJMAX_C==1) THEN
ZYHAT2(IJMAX_C+1) = ZYHAT2(IJMAX_C) + ZYHAT2_F(1,JI,1) - ZYHAT2_F(1,JI,1)
ELSE
#ifdef MNH_PARALLEL
IF ( LNORTH_ll() ) THEN ! the east halo point does not have a correct value so have to do an extrapolation
ZYHAT2(IJMAX_C+1) = 2. * ZYHAT2(IJMAX_C) - ZYHAT2(IJMAX_C-1)
ELSE
ZYHAT2(IJMAX_C+1)=(1.-ZCOEFY(1))*ZYHAT2_F_TMP(IYDIM_C)+ZCOEFY(1)*ZYHAT2_F_TMP(IYDIM_C+1)
ENDIF
#else
ZYHAT2(IJMAX_C+1) = 2. * ZYHAT2(IJMAX_C) - ZYHAT2(IJMAX_C-1)
#endif
END IF
!---------------------------------------------------------------------------
DEALLOCATE(ZXM1)
DEALLOCATE(ZYM1)
DEALLOCATE(ZXHAT1)
DEALLOCATE(ZYHAT1)
#ifdef MNH_PARALLEL
DEALLOCATE(ZXHAT1_3D)
DEALLOCATE(ZYHAT1_3D)
#endif
!------------------------------------------------------------------------------
!
!* 7. Coordinate arrays of all points
! -------------------------------
!
DO JJ=1,IJMAX_C
DO JI=1,IIMAX_C
JL = (JJ-1) * IIMAX_C + JI
PX2 (JL) = 0.5 * ZXHAT2(JI) + 0.5 * ZXHAT2(JI+1)
PDX2(JL) = ZXHAT2(JI+1) - ZXHAT2(JI)
PY2 (JL) = 0.5 * ZYHAT2(JJ) + 0.5 * ZYHAT2(JJ+1)
PDY2(JL) = ZYHAT2(JJ+1) - ZYHAT2(JJ)
END DO
END DO
!
#ifdef MNH_PARALLEL
KIMAX_C_ll = IIMAX_C
KJMAX_C_ll = IJMAX_C
#endif
!---------------------------------------------------------------------------
#ifdef MNH_PARALLEL
DEALLOCATE(ZXHAT2_F)
DEALLOCATE(ZYHAT2_F)
DEALLOCATE(TZCRSPDSENDTAB)
DEALLOCATE(TZCRSPDRECVTAB)
DEALLOCATE(TZSEND)
DEALLOCATE(TZRECV)
DEALLOCATE(TZCOARSEFATHER)
DEALLOCATE(TZCOARSESONSPLIT)
#endif
DEALLOCATE(ZXHAT2)
DEALLOCATE(ZYHAT2)
IF (LHOOK) CALL DR_HOOK('REGULAR_GRID_SPAWN',1,ZHOOK_HANDLE)
!---------------------------------------------------------------------------
!
END SUBROUTINE REGULAR_GRID_SPAWN