| 1 |
C $Header: /u/gcmpack/MITgcm/pkg/exch2/exch2_uv_dgrid_3d_rx.template,v 1.2 2009/05/12 19:44:58 jmc Exp $ |
| 2 |
C $Name: $ |
| 3 |
|
| 4 |
#include "CPP_EEOPTIONS.h" |
| 5 |
#include "W2_OPTIONS.h" |
| 6 |
|
| 7 |
CBOP |
| 8 |
C !ROUTINE: EXCH2_UV_DGRID_3D_RX |
| 9 |
|
| 10 |
C !INTERFACE: |
| 11 |
SUBROUTINE EXCH2_UV_DGRID_3D_RX( |
| 12 |
U uPhi, vPhi, |
| 13 |
I withSigns, myNz, myThid ) |
| 14 |
|
| 15 |
C !DESCRIPTION: |
| 16 |
C*=====================================================================* |
| 17 |
C Purpose: SUBROUTINE EXCH2_UV_DGRID_3D_RX |
| 18 |
C handle exchanges for a 3D vector field on an D-grid. |
| 19 |
C |
| 20 |
C Input: |
| 21 |
C uPhi(lon,lat,levs,bi,bj) :: first component of vector |
| 22 |
C vPhi(lon,lat,levs,bi,bj) :: second component of vector |
| 23 |
C withSigns (logical) :: true to use sign of components |
| 24 |
C myNz :: 3rd dimension of input arrays uPhi,vPhi |
| 25 |
C myThid :: my Thread Id number |
| 26 |
C |
| 27 |
C Output: uPhi and vPhi are updated (halo regions filled) |
| 28 |
C |
| 29 |
C Calls: EXCH_RX (EXCH2_RX2_CUBE) ignoring sign |
| 30 |
C then put back the right signs |
| 31 |
C |
| 32 |
C*=====================================================================* |
| 33 |
|
| 34 |
C !USES: |
| 35 |
IMPLICIT NONE |
| 36 |
|
| 37 |
#include "SIZE.h" |
| 38 |
#include "EEPARAMS.h" |
| 39 |
#include "W2_EXCH2_SIZE.h" |
| 40 |
#include "W2_EXCH2_TOPOLOGY.h" |
| 41 |
|
| 42 |
C !INPUT/OUTPUT PARAMETERS: |
| 43 |
C == Argument list variables == |
| 44 |
INTEGER myNz |
| 45 |
_RX uPhi(1-OLx:sNx+OLx,1-OLy:sNy+OLy,myNz,nSx,nSy) |
| 46 |
_RX vPhi(1-OLx:sNx+OLx,1-OLy:sNy+OLy,myNz,nSx,nSy) |
| 47 |
LOGICAL withSigns |
| 48 |
INTEGER myThid |
| 49 |
|
| 50 |
C !LOCAL VARIABLES: |
| 51 |
C == Local variables == |
| 52 |
C i,j,k,bi,bj :: loop indices. |
| 53 |
C OL[wens] :: Overlap extents in west, east, north, south. |
| 54 |
C exchWidth[XY] :: Extent of regions that will be exchanged. |
| 55 |
|
| 56 |
INTEGER i,j,k,bi,bj |
| 57 |
INTEGER OLw, OLe, OLn, OLs, exchWidthX, exchWidthY |
| 58 |
_RX negOne |
| 59 |
INTEGER myTile, myFace |
| 60 |
CEOP |
| 61 |
|
| 62 |
OLw = OLx |
| 63 |
OLe = OLx |
| 64 |
OLn = OLy |
| 65 |
OLs = OLy |
| 66 |
exchWidthX = OLx |
| 67 |
exchWidthY = OLy |
| 68 |
negOne = 1. |
| 69 |
IF (withSigns) negOne = -1. |
| 70 |
|
| 71 |
C-- First call the exchanges for the two components, ignoring the Sign |
| 72 |
C note the order: vPhi,uPhi on D-grid are co-located with (u,v)_Cgrid |
| 73 |
|
| 74 |
c CALL EXCH2_RX2_CUBE( vPhi, uPhi, .FALSE., 'UV', |
| 75 |
c I OLw, OLe, OLs, OLn, myNz, |
| 76 |
c I exchWidthX, exchWidthY, |
| 77 |
c I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
| 78 |
c CALL EXCH2_RX2_CUBE( vPhi, uPhi, .FALSE., 'UV', |
| 79 |
c I OLw, OLe, OLs, OLn, myNz, |
| 80 |
c I exchWidthX, exchWidthY, |
| 81 |
c I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
| 82 |
c CALL EXCH2_RX2_CUBE( vPhi, uPhi, .FALSE., 'UV', |
| 83 |
c I OLw, OLe, OLs, OLn, myNz, |
| 84 |
c I exchWidthX, exchWidthY, |
| 85 |
c I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
| 86 |
|
| 87 |
C- note: can substitute the low-level S/R calls above with: |
| 88 |
#ifdef W2_USE_R1_ONLY |
| 89 |
CALL EXCH2_UV_CGRID_3D_RX( |
| 90 |
U vPhi, uPhi, |
| 91 |
I .FALSE., myNz, myThid ) |
| 92 |
#else |
| 93 |
CALL EXCH2_UV_3D_RX( |
| 94 |
U vPhi, uPhi, |
| 95 |
I .FALSE., myNz, myThid ) |
| 96 |
#endif |
| 97 |
|
| 98 |
IF ( useCubedSphereExchange ) THEN |
| 99 |
C--- using CubedSphereExchange: |
| 100 |
|
| 101 |
C-- Then we may need to switch the signs depending on which cube face |
| 102 |
C we are located. |
| 103 |
|
| 104 |
C-- Loops on tile indices: |
| 105 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 106 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 107 |
|
| 108 |
C- Now choose what to do at each edge of the halo based on which face |
| 109 |
C (we assume that bj is always=1) |
| 110 |
myTile = W2_myTileList(bi,bj) |
| 111 |
myFace = exch2_myFace(myTile) |
| 112 |
|
| 113 |
C-- Loops on level index: |
| 114 |
DO k = 1,myNz |
| 115 |
|
| 116 |
C- odd faces share disposition of all sections of the halo |
| 117 |
IF ( MOD(myFace,2).EQ.1 ) THEN |
| 118 |
C- North: |
| 119 |
IF (exch2_isNedge(myTile).EQ.1) THEN |
| 120 |
DO j = 1,exchWidthY |
| 121 |
DO i = 1-OLx,sNx+OLx |
| 122 |
uPhi(i,sNy+j,k,bi,bj) = uPhi(i,sNy+j,k,bi,bj)*negOne |
| 123 |
c vPhi(i,sNy+j,k,bi,bj) = vPhi(i,sNy+j,k,bi,bj) |
| 124 |
ENDDO |
| 125 |
ENDDO |
| 126 |
ENDIF |
| 127 |
C- South: (nothing to change) |
| 128 |
c IF (exch2_isSedge(myTile).EQ.1) THEN |
| 129 |
c DO j = 1,exchWidthY |
| 130 |
c DO i = 1-OLx,sNx+OLx |
| 131 |
c uPhi(i,1-j,k,bi,bj) = uPhi(i,1-j,k,bi,bj) |
| 132 |
c vPhi(i,1-j,k,bi,bj) = vPhi(i,1-j,k,bi,bj) |
| 133 |
c ENDDO |
| 134 |
c ENDDO |
| 135 |
c ENDIF |
| 136 |
C- East: (nothing to change) |
| 137 |
c IF (exch2_isEedge(myTile).EQ.1) THEN |
| 138 |
c DO j = 1-OLy,sNy+OLy |
| 139 |
c DO i = 1,exchWidthX |
| 140 |
c uPhi(sNx+i,j,k,bi,bj) = uPhi(sNx+i,j,k,bi,bj) |
| 141 |
c vPhi(sNx+i,j,k,bi,bj) = vPhi(sNx+i,j,k,bi,bj) |
| 142 |
c ENDDO |
| 143 |
c ENDDO |
| 144 |
c ENDIF |
| 145 |
C- West: |
| 146 |
IF (exch2_isWedge(myTile).EQ.1) THEN |
| 147 |
DO j = 1-OLy,sNy+OLy |
| 148 |
DO i = 1,exchWidthX |
| 149 |
c uPhi(1-i,j,k,bi,bj) = uPhi(1-i,j,k,bi,bj) |
| 150 |
vPhi(1-i,j,k,bi,bj) = vPhi(1-i,j,k,bi,bj)*negOne |
| 151 |
ENDDO |
| 152 |
ENDDO |
| 153 |
ENDIF |
| 154 |
|
| 155 |
ELSE |
| 156 |
C- Now the even faces (share disposition of all sections of the halo) |
| 157 |
|
| 158 |
C- East: |
| 159 |
IF (exch2_isEedge(myTile).EQ.1) THEN |
| 160 |
DO j = 1-OLy,sNy+OLy |
| 161 |
DO i = 1,exchWidthX |
| 162 |
c uPhi(sNx+i,j,k,bi,bj) = uPhi(sNx+i,j,k,bi,bj) |
| 163 |
vPhi(sNx+i,j,k,bi,bj) = vPhi(sNx+i,j,k,bi,bj)*negOne |
| 164 |
ENDDO |
| 165 |
ENDDO |
| 166 |
ENDIF |
| 167 |
C- West: (nothing to change) |
| 168 |
c IF (exch2_isWedge(myTile).EQ.1) THEN |
| 169 |
c DO j = 1-OLy,sNy+OLy |
| 170 |
c DO i = 1,exchWidthX |
| 171 |
c uPhi(1-i,j,k,bi,bj) = uPhi(1-i,j,k,bi,bj) |
| 172 |
c vPhi(1-i,j,k,bi,bj) = vPhi(1-i,j,k,bi,bj) |
| 173 |
c ENDDO |
| 174 |
c ENDDO |
| 175 |
c ENDIF |
| 176 |
C- North: (nothing to change) |
| 177 |
c IF (exch2_isNedge(myTile).EQ.1) THEN |
| 178 |
c DO j = 1,exchWidthY |
| 179 |
c DO i = 1-OLx,sNx+OLx |
| 180 |
c uPhi(i,sNy+j,k,bi,bj) = uPhi(i,sNy+j,k,bi,bj) |
| 181 |
c vPhi(i,sNy+j,k,bi,bj) = vPhi(i,sNy+j,k,bi,bj) |
| 182 |
c ENDDO |
| 183 |
c ENDDO |
| 184 |
c ENDIF |
| 185 |
C- South: |
| 186 |
IF (exch2_isSedge(myTile).EQ.1) THEN |
| 187 |
DO j = 1,exchWidthY |
| 188 |
DO i = 1-OLx,sNx+OLx |
| 189 |
uPhi(i,1-j,k,bi,bj) = uPhi(i,1-j,k,bi,bj)*negOne |
| 190 |
c vPhi(i,1-j,k,bi,bj) = vPhi(i,1-j,k,bi,bj) |
| 191 |
ENDDO |
| 192 |
ENDDO |
| 193 |
ENDIF |
| 194 |
|
| 195 |
C end odd / even faces |
| 196 |
ENDIF |
| 197 |
|
| 198 |
C-- end of Loops on tile and level indices (k,bi,bj). |
| 199 |
ENDDO |
| 200 |
ENDDO |
| 201 |
ENDDO |
| 202 |
|
| 203 |
C--- using or not using CubedSphereExchange: end |
| 204 |
ENDIF |
| 205 |
|
| 206 |
RETURN |
| 207 |
END |
| 208 |
|
| 209 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 210 |
|
| 211 |
CEH3 ;;; Local Variables: *** |
| 212 |
CEH3 ;;; mode:fortran *** |
| 213 |
CEH3 ;;; End: *** |
Parent Directory
| 
Revision Log
| 
Revision Graph