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C $Header: /u/gcmpack/MITgcm/pkg/exch2/exch2_uv_agrid_3d_rx.template,v 1.6 2009/06/28 00:57:51 jmc Exp $ |
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C $Name: $ |
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|
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#include "CPP_EEOPTIONS.h" |
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#include "W2_OPTIONS.h" |
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|
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CBOP |
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C !ROUTINE: EXCH2_UV_AGRID_3D_RX |
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|
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C !INTERFACE: |
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SUBROUTINE EXCH2_UV_AGRID_3D_RX( |
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U uPhi, vPhi, |
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I withSigns, myNz, myThid ) |
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|
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C !DESCRIPTION: |
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C*=====================================================================* |
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C Purpose: SUBROUTINE EXCH2_UV_AGRID_3D_RX |
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C handle exchanges for a 3D vector field on an A-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_RX1_cube) - for each component |
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C |
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C*=====================================================================* |
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|
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C !USES: |
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IMPLICIT NONE |
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|
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "W2_EXCH2_SIZE.h" |
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#include "W2_EXCH2_TOPOLOGY.h" |
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|
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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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|
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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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C uLoc,vLoc :: copies of the vector components with haloes filled. |
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|
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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 uLoc(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RX vLoc(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RX negOne |
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INTEGER myTile, myFace |
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CEOP |
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|
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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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|
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C-- First call the exchanges for the two components |
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|
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CALL EXCH2_RX1_CUBE( uPhi, .FALSE., 'T ', |
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I OLw, OLe, OLs, OLn, myNz, |
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I exchWidthX, exchWidthY, |
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I EXCH_UPDATE_CORNERS, myThid ) |
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CALL EXCH2_RX1_CUBE( uPhi, .FALSE., 'T ', |
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I OLw, OLe, OLs, OLn, myNz, |
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I exchWidthX, exchWidthY, |
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I EXCH_UPDATE_CORNERS, myThid ) |
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|
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CALL EXCH2_RX1_CUBE( vPhi, .FALSE., 'T ', |
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I OLw, OLe, OLs, OLn, myNz, |
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I exchWidthX, exchWidthY, |
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I EXCH_UPDATE_CORNERS, myThid ) |
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CALL EXCH2_RX1_CUBE( vPhi, .FALSE., 'T ', |
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I OLw, OLe, OLs, OLn, myNz, |
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I exchWidthX, exchWidthY, |
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I EXCH_UPDATE_CORNERS, myThid ) |
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|
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C- note: can substitute the low-level S/R calls above with: |
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c CALL EXCH2_3D_RX( uPhi, myNz, myThid ) |
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c CALL EXCH2_3D_RX( vPhi, myNz, myThid ) |
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|
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IF ( useCubedSphereExchange ) THEN |
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|
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C-- Then we may need to switch u and v components |
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C and/or the signs depending on which cube face we are located. |
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|
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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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|
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C- Choose what to do at each edge of the halo based on which face we are |
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myTile = W2_myTileList(bi,bj) |
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myFace = exch2_myFace(myTile) |
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|
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C-- Loops on level index: |
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DO k = 1,myNz |
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|
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C- First we copy the component info into local dummy arrays |
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DO j = 1-OLy,sNy+OLy |
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DO i = 1-OLx,sNx+OLx |
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uLoc(i,j) = uPhi(i,j,k,bi,bj) |
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vLoc(i,j) = vPhi(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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|
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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) = vLoc(i,sNy+j)*negOne |
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vPhi(i,sNy+j,k,bi,bj) = uLoc(i,sNy+j) |
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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) = uLoc(i,1-j) |
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c vPhi(i,1-j,k,bi,bj) = vLoc(i,1-j) |
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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) = uLoc(sNx+i,j) |
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c vPhi(sNx+i,j,k,bi,bj) = vLoc(sNx+i,j) |
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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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uPhi(1-i,j,k,bi,bj) = vLoc(1-i,j) |
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vPhi(1-i,j,k,bi,bj) = uLoc(1-i,j)*negOne |
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ENDDO |
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ENDDO |
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ENDIF |
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|
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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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|
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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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uPhi(sNx+i,j,k,bi,bj) = vLoc(sNx+i,j) |
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vPhi(sNx+i,j,k,bi,bj) = uLoc(sNx+i,j)*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) = uLoc(1-i,j) |
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c vPhi(1-i,j,k,bi,bj) = vLoc(1-i,j) |
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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) = uLoc(i,sNy+j) |
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c vPhi(i,sNy+j,k,bi,bj) = vLoc(i,sNy+j) |
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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) = vLoc(i,1-j)*negOne |
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vPhi(i,1-j,k,bi,bj) = uLoc(i,1-j) |
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ENDDO |
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ENDDO |
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ENDIF |
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|
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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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|
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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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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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|
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CEH3 ;;; Local Variables: *** |
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CEH3 ;;; mode:fortran *** |
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CEH3 ;;; End: *** |
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