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jmc |
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C $Header: /u/gcmpack/MITgcm/pkg/exch2/exch2_uv_dgrid_3d_rx.template,v 1.2 2009/05/12 19:44:58 jmc Exp $ |
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jmc |
1.1 |
C $Name: $ |
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#include "CPP_EEOPTIONS.h" |
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#include "W2_OPTIONS.h" |
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CBOP |
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C !ROUTINE: EXCH2_UV_DGRID_3D_RX |
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C !INTERFACE: |
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SUBROUTINE EXCH2_UV_DGRID_3D_RX( |
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U uPhi, vPhi, |
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I withSigns, myNz, myThid ) |
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C !DESCRIPTION: |
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C*=====================================================================* |
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C Purpose: SUBROUTINE EXCH2_UV_DGRID_3D_RX |
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C handle exchanges for a 3D vector field on an D-grid. |
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C |
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C Input: |
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C uPhi(lon,lat,levs,bi,bj) :: first component of vector |
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C vPhi(lon,lat,levs,bi,bj) :: second component of vector |
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C withSigns (logical) :: true to use sign of components |
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C myNz :: 3rd dimension of input arrays uPhi,vPhi |
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C myThid :: my Thread Id number |
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C |
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C Output: uPhi and vPhi are updated (halo regions filled) |
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C |
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C Calls: EXCH_RX (EXCH2_RX2_CUBE) ignoring sign |
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C then put back the right signs |
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C |
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C*=====================================================================* |
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C !USES: |
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IMPLICIT NONE |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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jmc |
1.2 |
#include "W2_EXCH2_SIZE.h" |
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jmc |
1.1 |
#include "W2_EXCH2_TOPOLOGY.h" |
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C !INPUT/OUTPUT PARAMETERS: |
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C == Argument list variables == |
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INTEGER myNz |
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_RX uPhi(1-OLx:sNx+OLx,1-OLy:sNy+OLy,myNz,nSx,nSy) |
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_RX vPhi(1-OLx:sNx+OLx,1-OLy:sNy+OLy,myNz,nSx,nSy) |
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LOGICAL withSigns |
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INTEGER myThid |
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C !LOCAL VARIABLES: |
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C == Local variables == |
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C i,j,k,bi,bj :: loop indices. |
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C OL[wens] :: Overlap extents in west, east, north, south. |
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C exchWidth[XY] :: Extent of regions that will be exchanged. |
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INTEGER i,j,k,bi,bj |
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INTEGER OLw, OLe, OLn, OLs, exchWidthX, exchWidthY |
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_RX negOne |
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INTEGER myTile, myFace |
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CEOP |
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OLw = OLx |
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OLe = OLx |
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OLn = OLy |
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OLs = OLy |
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exchWidthX = OLx |
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exchWidthY = OLy |
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negOne = 1. |
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IF (withSigns) negOne = -1. |
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C-- First call the exchanges for the two components, ignoring the Sign |
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C note the order: vPhi,uPhi on D-grid are co-located with (u,v)_Cgrid |
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c CALL EXCH2_RX2_CUBE( vPhi, uPhi, .FALSE., 'UV', |
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c I OLw, OLe, OLs, OLn, myNz, |
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c I exchWidthX, exchWidthY, |
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c I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
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c CALL EXCH2_RX2_CUBE( vPhi, uPhi, .FALSE., 'UV', |
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c I OLw, OLe, OLs, OLn, myNz, |
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c I exchWidthX, exchWidthY, |
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c I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
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c CALL EXCH2_RX2_CUBE( vPhi, uPhi, .FALSE., 'UV', |
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c I OLw, OLe, OLs, OLn, myNz, |
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c I exchWidthX, exchWidthY, |
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c I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
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C- note: can substitute the low-level S/R calls above with: |
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#ifdef W2_USE_R1_ONLY |
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CALL EXCH2_UV_CGRID_3D_RX( |
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U vPhi, uPhi, |
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I .FALSE., myNz, myThid ) |
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#else |
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CALL EXCH2_UV_3D_RX( |
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U vPhi, uPhi, |
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I .FALSE., myNz, myThid ) |
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#endif |
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jmc |
1.3 |
IF ( useCubedSphereExchange ) THEN |
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C--- using CubedSphereExchange: |
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jmc |
1.1 |
C-- Then we may need to switch the signs depending on which cube face |
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C we are located. |
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C-- Loops on tile indices: |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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C- Now choose what to do at each edge of the halo based on which face |
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C (we assume that bj is always=1) |
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jmc |
1.3 |
myTile = W2_myTileList(bi,bj) |
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jmc |
1.1 |
myFace = exch2_myFace(myTile) |
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C-- Loops on level index: |
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DO k = 1,myNz |
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C- odd faces share disposition of all sections of the halo |
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IF ( MOD(myFace,2).EQ.1 ) THEN |
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C- North: |
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IF (exch2_isNedge(myTile).EQ.1) THEN |
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DO j = 1,exchWidthY |
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DO i = 1-OLx,sNx+OLx |
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uPhi(i,sNy+j,k,bi,bj) = uPhi(i,sNy+j,k,bi,bj)*negOne |
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c vPhi(i,sNy+j,k,bi,bj) = vPhi(i,sNy+j,k,bi,bj) |
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ENDDO |
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ENDDO |
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ENDIF |
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C- South: (nothing to change) |
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c IF (exch2_isSedge(myTile).EQ.1) THEN |
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c DO j = 1,exchWidthY |
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c DO i = 1-OLx,sNx+OLx |
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c uPhi(i,1-j,k,bi,bj) = uPhi(i,1-j,k,bi,bj) |
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c vPhi(i,1-j,k,bi,bj) = vPhi(i,1-j,k,bi,bj) |
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c ENDDO |
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c ENDDO |
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c ENDIF |
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C- East: (nothing to change) |
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c IF (exch2_isEedge(myTile).EQ.1) THEN |
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c DO j = 1-OLy,sNy+OLy |
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c DO i = 1,exchWidthX |
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c uPhi(sNx+i,j,k,bi,bj) = uPhi(sNx+i,j,k,bi,bj) |
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c vPhi(sNx+i,j,k,bi,bj) = vPhi(sNx+i,j,k,bi,bj) |
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c ENDDO |
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c ENDDO |
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c ENDIF |
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C- West: |
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IF (exch2_isWedge(myTile).EQ.1) THEN |
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DO j = 1-OLy,sNy+OLy |
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DO i = 1,exchWidthX |
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c uPhi(1-i,j,k,bi,bj) = uPhi(1-i,j,k,bi,bj) |
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vPhi(1-i,j,k,bi,bj) = vPhi(1-i,j,k,bi,bj)*negOne |
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ENDDO |
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ENDDO |
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ENDIF |
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ELSE |
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C- Now the even faces (share disposition of all sections of the halo) |
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C- East: |
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IF (exch2_isEedge(myTile).EQ.1) THEN |
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DO j = 1-OLy,sNy+OLy |
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DO i = 1,exchWidthX |
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c uPhi(sNx+i,j,k,bi,bj) = uPhi(sNx+i,j,k,bi,bj) |
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vPhi(sNx+i,j,k,bi,bj) = vPhi(sNx+i,j,k,bi,bj)*negOne |
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ENDDO |
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ENDDO |
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ENDIF |
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C- West: (nothing to change) |
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c IF (exch2_isWedge(myTile).EQ.1) THEN |
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c DO j = 1-OLy,sNy+OLy |
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c DO i = 1,exchWidthX |
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c uPhi(1-i,j,k,bi,bj) = uPhi(1-i,j,k,bi,bj) |
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c vPhi(1-i,j,k,bi,bj) = vPhi(1-i,j,k,bi,bj) |
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c ENDDO |
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c ENDDO |
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c ENDIF |
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C- North: (nothing to change) |
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c IF (exch2_isNedge(myTile).EQ.1) THEN |
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c DO j = 1,exchWidthY |
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c DO i = 1-OLx,sNx+OLx |
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c uPhi(i,sNy+j,k,bi,bj) = uPhi(i,sNy+j,k,bi,bj) |
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c vPhi(i,sNy+j,k,bi,bj) = vPhi(i,sNy+j,k,bi,bj) |
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c ENDDO |
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c ENDDO |
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c ENDIF |
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C- South: |
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IF (exch2_isSedge(myTile).EQ.1) THEN |
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DO j = 1,exchWidthY |
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DO i = 1-OLx,sNx+OLx |
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uPhi(i,1-j,k,bi,bj) = uPhi(i,1-j,k,bi,bj)*negOne |
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c vPhi(i,1-j,k,bi,bj) = vPhi(i,1-j,k,bi,bj) |
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ENDDO |
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ENDDO |
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ENDIF |
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C end odd / even faces |
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ENDIF |
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C-- end of Loops on tile and level indices (k,bi,bj). |
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ENDDO |
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ENDDO |
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ENDDO |
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C--- using or not using CubedSphereExchange: end |
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ENDIF |
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RETURN |
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END |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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CEH3 ;;; Local Variables: *** |
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CEH3 ;;; mode:fortran *** |
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CEH3 ;;; End: *** |
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