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jmc |
1.4 |
C $Header: /u/gcmpack/MITgcm/pkg/exch2/exch2_uv_cgrid_3d_rx.template,v 1.3 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_CGRID_3D_RX |
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C !INTERFACE: |
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SUBROUTINE EXCH2_UV_CGRID_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_CGRID_3D_RX |
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C handle exchanges for a 3D vector field on a C-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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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 |
1.3 |
#include "W2_EXCH2_SIZE.h" |
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jmc |
1.1 |
#include "W2_EXCH2_TOPOLOGY.h" |
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jmc |
1.3 |
#ifdef W2_FILL_NULL_REGIONS |
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jmc |
1.1 |
#include "W2_EXCH2_PARAMS.h" |
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jmc |
1.3 |
#endif |
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jmc |
1.1 |
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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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C uLoc,vLoc :: local copy of the vector components with haloes filled. |
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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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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 |
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CALL EXCH2_RX1_CUBE( uPhi, 'T ', |
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I OLw, OLe, OLs, OLn, myNz, |
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I exchWidthX, exchWidthY, |
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I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
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CALL EXCH2_RX1_CUBE( uPhi, 'T ', |
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I OLw, OLe, OLs, OLn, myNz, |
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I exchWidthX, exchWidthY, |
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I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
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CALL EXCH2_RX1_CUBE( vPhi, 'T ', |
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I OLw, OLe, OLs, OLn, myNz, |
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I exchWidthX, exchWidthY, |
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I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
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CALL EXCH2_RX1_CUBE( vPhi, 'T ', |
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I OLw, OLe, OLs, OLn, myNz, |
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I exchWidthX, exchWidthY, |
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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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c CALL EXCH2_3D_RX( uPhi, myNz, myThid ) |
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c CALL EXCH2_3D_RX( vPhi, myNz, myThid ) |
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jmc |
1.4 |
IF ( useCubedSphereExchange ) THEN |
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jmc |
1.1 |
C-- Then, depending on which tile we are, we may need |
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C 1) to switch u and v components and also to switch the signs |
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C 2) to shift the index along the face edge. |
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C 3) ensure that near-corner halo regions is filled in the correct order |
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C (i.e. with velocity component already available after 1 exch) |
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C- note: because of index shift, the order really matter: |
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C odd faces, do North 1rst and then West; |
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C even faces, do East 1rst and then South. |
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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 |
1.4 |
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- First we copy the 2 components info into local dummy arrays uLoc,vLoc |
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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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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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C switch u <- v , reverse the sign & shift i+1 <- i |
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DO j = 1,exchWidthY |
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DO i = 1-OLx,sNx+OLx-1 |
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uPhi(i+1,sNy+j,k,bi,bj) = vLoc(i,sNy+j)*negOne |
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ENDDO |
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ENDDO |
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C switch v <- u , keep the sign |
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DO j = 1,exchWidthY |
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DO i = 1-OLx,sNx+OLx |
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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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C switch u <- v , keep the sign |
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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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ENDDO |
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ENDDO |
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C switch v <- u , reverse the sign & shift j+1 <- j |
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DO j = 1-OLy,sNy+OLy-1 |
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DO i = 1,exchWidthX |
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vPhi(1-i,j+1,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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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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C switch u <- v , keep the sign |
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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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ENDDO |
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ENDDO |
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C switch v <- u , reverse the sign & shift j+1 <- j |
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DO j = 1-OLy,sNy+OLy-1 |
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DO i = 1,exchWidthX |
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vPhi(sNx+i,j+1,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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C switch u <- v , reverse the sign & shift i+1 <- i |
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DO j = 1,exchWidthY |
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DO i = 1-OLx,sNx+OLx-1 |
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uPhi(i+1,1-j,k,bi,bj) = vLoc(i,1-j)*negOne |
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ENDDO |
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ENDDO |
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C switch v <- u , keep the sign |
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DO j = 1,exchWidthY |
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DO i = 1-OLx,sNx+OLx |
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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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C- end odd / even faces |
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ENDIF |
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C-- end of Loops on level index k. |
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ENDDO |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C-- Now fix edges near cube-corner |
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IF ( exch2_isWedge(myTile) .EQ. 1 .AND. |
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& exch2_isSedge(myTile) .EQ. 1 ) THEN |
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IF ( MOD(myFace,2).EQ.1 ) THEN |
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DO k=1,myNz |
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DO i=1,OLx |
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vPhi(1-i,1,k,bi,bj) = uPhi(1,1-i,k,bi,bj)*negOne |
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ENDDO |
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ENDDO |
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ELSE |
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DO k=1,myNz |
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DO i=1,OLx |
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uPhi(1,1-i,k,bi,bj) = vPhi(1-i,1,k,bi,bj)*negOne |
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ENDDO |
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ENDDO |
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ENDIF |
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ENDIF |
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IF ( exch2_isEedge(myTile) .EQ. 1 .AND. |
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& exch2_isSedge(myTile) .EQ. 1 ) THEN |
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IF ( MOD(myFace,2).EQ.1 ) THEN |
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DO k=1,myNz |
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DO i=1,OLx |
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uPhi(sNx+1,1-i,k,bi,bj) = vPhi(sNx+i,1,k,bi,bj) |
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ENDDO |
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ENDDO |
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ELSE |
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DO k=1,myNz |
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DO i=1,OLx |
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vPhi(sNx+i,1,k,bi,bj) = uPhi(sNx+1,1-i,k,bi,bj) |
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ENDDO |
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ENDDO |
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ENDIF |
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ENDIF |
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IF ( exch2_isEedge(myTile) .EQ. 1 .AND. |
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& exch2_isNedge(myTile) .EQ. 1 ) THEN |
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IF ( MOD(myFace,2).EQ.1 ) THEN |
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DO k=1,myNz |
| 281 |
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DO i=1,OLx |
| 282 |
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vPhi(sNx+i,sNy+1,k,bi,bj)=uPhi(sNx+1,sNy+i,k,bi,bj)*negOne |
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ENDDO |
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ENDDO |
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ELSE |
| 286 |
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DO k=1,myNz |
| 287 |
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DO i=1,OLx |
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uPhi(sNx+1,sNy+i,k,bi,bj)=vPhi(sNx+i,sNy+1,k,bi,bj)*negOne |
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ENDDO |
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ENDDO |
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ENDIF |
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ENDIF |
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IF ( exch2_isWedge(myTile) .EQ. 1 .AND. |
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& exch2_isNedge(myTile) .EQ. 1 ) THEN |
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IF ( MOD(myFace,2).EQ.1 ) THEN |
| 297 |
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DO k=1,myNz |
| 298 |
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DO i=1,OLx |
| 299 |
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uPhi(1,sNy+i,k,bi,bj) = vPhi(1-i,sNy+1,k,bi,bj) |
| 300 |
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ENDDO |
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ENDDO |
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ELSE |
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DO k=1,myNz |
| 304 |
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DO i=1,OLx |
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vPhi(1-i,sNy+1,k,bi,bj) = uPhi(1,sNy+i,k,bi,bj) |
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ENDDO |
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ENDDO |
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ENDIF |
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ENDIF |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C-- Now zero out the null areas that should not be used in the numerics |
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C Also add one valid u,v value next to the corner, that allows |
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C to compute vorticity on a wider stencil (e.g., vort3(0,1) & (1,0)) |
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IF ( exch2_isWedge(myTile) .EQ. 1 .AND. |
| 318 |
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& exch2_isSedge(myTile) .EQ. 1 ) THEN |
| 319 |
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C Zero SW corner points |
| 320 |
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DO k=1,myNz |
| 321 |
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#ifdef W2_FILL_NULL_REGIONS |
| 322 |
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DO j=1-OLy,0 |
| 323 |
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DO i=1-OLx,0 |
| 324 |
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uPhi(i,j,k,bi,bj)=e2FillValue_RX |
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ENDDO |
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ENDDO |
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DO j=1-OLy,0 |
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DO i=1-OLx,0 |
| 329 |
|
|
vPhi(i,j,k,bi,bj)=e2FillValue_RX |
| 330 |
|
|
ENDDO |
| 331 |
|
|
ENDDO |
| 332 |
|
|
#endif |
| 333 |
|
|
uPhi(0,0,k,bi,bj)=vPhi(1,0,k,bi,bj) |
| 334 |
|
|
vPhi(0,0,k,bi,bj)=uPhi(0,1,k,bi,bj) |
| 335 |
|
|
ENDDO |
| 336 |
|
|
ENDIF |
| 337 |
|
|
|
| 338 |
|
|
IF ( exch2_isWedge(myTile) .EQ. 1 .AND. |
| 339 |
|
|
& exch2_isNedge(myTile) .EQ. 1 ) THEN |
| 340 |
|
|
C Zero NW corner points |
| 341 |
|
|
DO k=1,myNz |
| 342 |
|
|
#ifdef W2_FILL_NULL_REGIONS |
| 343 |
|
|
DO j=sNy+1,sNy+OLy |
| 344 |
|
|
DO i=1-OLx,0 |
| 345 |
|
|
uPhi(i,j,k,bi,bj)=e2FillValue_RX |
| 346 |
|
|
ENDDO |
| 347 |
|
|
ENDDO |
| 348 |
|
|
DO j=sNy+2,sNy+OLy |
| 349 |
|
|
DO i=1-OLx,0 |
| 350 |
|
|
vPhi(i,j,k,bi,bj)=e2FillValue_RX |
| 351 |
|
|
ENDDO |
| 352 |
|
|
ENDDO |
| 353 |
|
|
#endif |
| 354 |
|
|
uPhi(0,sNy+1,k,bi,bj)= vPhi(1,sNy+2,k,bi,bj)*negOne |
| 355 |
|
|
vPhi(0,sNy+2,k,bi,bj)= uPhi(0,sNy,k,bi,bj)*negOne |
| 356 |
|
|
ENDDO |
| 357 |
|
|
ENDIF |
| 358 |
|
|
|
| 359 |
|
|
IF ( exch2_isEedge(myTile) .EQ. 1 .AND. |
| 360 |
|
|
& exch2_isSedge(myTile) .EQ. 1 ) THEN |
| 361 |
|
|
C Zero SE corner points |
| 362 |
|
|
DO k=1,myNz |
| 363 |
|
|
#ifdef W2_FILL_NULL_REGIONS |
| 364 |
|
|
DO j=1-OLy,0 |
| 365 |
|
|
DO i=sNx+2,sNx+OLx |
| 366 |
|
|
uPhi(i,j,k,bi,bj)=e2FillValue_RX |
| 367 |
|
|
ENDDO |
| 368 |
|
|
ENDDO |
| 369 |
|
|
DO j=1-OLy,0 |
| 370 |
|
|
DO i=sNx+1,sNx+OLx |
| 371 |
|
|
vPhi(i,j,k,bi,bj)=e2FillValue_RX |
| 372 |
|
|
ENDDO |
| 373 |
|
|
ENDDO |
| 374 |
|
|
#endif |
| 375 |
|
|
uPhi(sNx+2,0,k,bi,bj)= vPhi(sNx,0,k,bi,bj)*negOne |
| 376 |
|
|
vPhi(sNx+1,0,k,bi,bj)= uPhi(sNx+2,1,k,bi,bj)*negOne |
| 377 |
|
|
ENDDO |
| 378 |
|
|
ENDIF |
| 379 |
|
|
|
| 380 |
|
|
IF ( exch2_isEedge(myTile) .EQ. 1 .AND. |
| 381 |
|
|
& exch2_isNedge(myTile) .EQ. 1 ) THEN |
| 382 |
|
|
C Zero NE corner points |
| 383 |
|
|
DO k=1,myNz |
| 384 |
|
|
#ifdef W2_FILL_NULL_REGIONS |
| 385 |
|
|
DO j=sNy+1,sNy+OLy |
| 386 |
|
|
DO i=sNx+2,sNx+OLx |
| 387 |
|
|
uPhi(i,j,k,bi,bj)=e2FillValue_RX |
| 388 |
|
|
ENDDO |
| 389 |
|
|
ENDDO |
| 390 |
|
|
DO j=sNy+2,sNy+OLy |
| 391 |
|
|
DO i=sNx+1,sNx+OLx |
| 392 |
|
|
vPhi(i,j,k,bi,bj)=e2FillValue_RX |
| 393 |
|
|
ENDDO |
| 394 |
|
|
ENDDO |
| 395 |
|
|
#endif |
| 396 |
|
|
uPhi(sNx+2,sNy+1,k,bi,bj)=vPhi(sNx,sNy+2,k,bi,bj) |
| 397 |
|
|
vPhi(sNx+1,sNy+2,k,bi,bj)=uPhi(sNx+2,sNy,k,bi,bj) |
| 398 |
|
|
ENDDO |
| 399 |
|
|
ENDIF |
| 400 |
|
|
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 401 |
|
|
|
| 402 |
|
|
C-- end of Loops on tile indices (bi,bj). |
| 403 |
|
|
ENDDO |
| 404 |
|
|
ENDDO |
| 405 |
|
|
|
| 406 |
|
|
C--- using or not using CubedSphereExchange: end |
| 407 |
|
|
ENDIF |
| 408 |
|
|
|
| 409 |
|
|
RETURN |
| 410 |
|
|
END |
| 411 |
|
|
|
| 412 |
|
|
CEH3 ;;; Local Variables: *** |
| 413 |
|
|
CEH3 ;;; mode:fortran *** |
| 414 |
|
|
CEH3 ;;; End: *** |
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