1 |
C $Header: /u/gcmpack/MITgcm/pkg/exch2/exch2_uv_agrid_3d_rx.template,v 1.1 2006/08/23 15:13:04 jmc Exp $ |
2 |
C $Name: $ |
3 |
|
4 |
#include "CPP_EEOPTIONS.h" |
5 |
#include "W2_OPTIONS.h" |
6 |
|
7 |
CBOP |
8 |
C !ROUTINE: EXCH2_UV_AGRID_3D_RX |
9 |
|
10 |
C !INTERFACE: |
11 |
SUBROUTINE EXCH2_UV_AGRID_3D_RX( |
12 |
U Uphi, Vphi, |
13 |
I withSigns, myNz, myThid ) |
14 |
|
15 |
C !DESCRIPTION: |
16 |
C*=====================================================================* |
17 |
C Purpose: SUBROUTINE EXCH2_UV_AGRID_3D_RX |
18 |
C handle exchanges for a 3D vector field on an A-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_RX1_cube) - for each component |
30 |
C |
31 |
C*=====================================================================* |
32 |
|
33 |
C !USES: |
34 |
IMPLICIT NONE |
35 |
|
36 |
#include "SIZE.h" |
37 |
#include "EEPARAMS.h" |
38 |
#include "EESUPPORT.h" |
39 |
#include "W2_EXCH2_TOPOLOGY.h" |
40 |
#include "W2_EXCH2_PARAMS.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 |
C dummy[12] :: - copies of the vector components with haloes filled. |
56 |
|
57 |
INTEGER i,j,k,bi,bj |
58 |
INTEGER OLw, OLe, OLn, OLs, exchWidthX, exchWidthY |
59 |
_RX dummy1(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
60 |
_RX dummy2(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
61 |
_RX negOne |
62 |
INTEGER mytile, myface |
63 |
CEOP |
64 |
|
65 |
OLw = OLx |
66 |
OLe = OLx |
67 |
OLn = OLy |
68 |
OLs = OLy |
69 |
exchWidthX = OLx |
70 |
exchWidthY = OLy |
71 |
negOne = 1. |
72 |
IF (withSigns) negOne = -1. |
73 |
|
74 |
IF ( useCubedSphereExchange ) THEN |
75 |
C--- using CubedSphereExchange: |
76 |
|
77 |
C First CALL the exchanges for the two components |
78 |
|
79 |
CALL EXCH2_RX1_CUBE( Uphi, 'T ', |
80 |
I OLw, OLe, OLs, OLn, myNz, |
81 |
I exchWidthX, exchWidthY, |
82 |
I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
83 |
CALL EXCH2_RX1_CUBE( Uphi, 'T ', |
84 |
I OLw, OLe, OLs, OLn, myNz, |
85 |
I exchWidthX, exchWidthY, |
86 |
I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
87 |
|
88 |
CALL EXCH2_RX1_CUBE( Vphi, 'T ', |
89 |
I OLw, OLe, OLs, OLn, myNz, |
90 |
I exchWidthX, exchWidthY, |
91 |
I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
92 |
CALL EXCH2_RX1_CUBE( Vphi, 'T ', |
93 |
I OLw, OLe, OLs, OLn, myNz, |
94 |
I exchWidthX, exchWidthY, |
95 |
I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
96 |
|
97 |
C- note: can substitute the low-level S/R calls above with: |
98 |
c CALL EXCH2_3D_RX( Uphi, myNz, myThid ) |
99 |
c CALL EXCH2_3D_RX( Vphi, myNz, myThid ) |
100 |
|
101 |
C Then if we are on the cube we may need to switch u and v components |
102 |
C and/or the signs depending on which cube face we are located. |
103 |
|
104 |
C-- Loops on tile and level indices: |
105 |
DO bj = myByLo(myThid), myByHi(myThid) |
106 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
107 |
DO k = 1,myNz |
108 |
|
109 |
C First we need to copy the component info into dummy arrays |
110 |
DO j = 1-OLy,sNy+OLy |
111 |
DO i = 1-OLx,sNx+OLx |
112 |
dummy1(i,j) = Uphi(i,j,k,bi,bj) |
113 |
dummy2(i,j) = Vphi(i,j,k,bi,bj) |
114 |
ENDDO |
115 |
ENDDO |
116 |
|
117 |
C Now choose what to do at each edge of the halo based on which face |
118 |
C (we assume that bj is always=1) |
119 |
mytile = W2_myTileList(bi) |
120 |
myface = exch2_myFace(mytile) |
121 |
|
122 |
C odd faces share disposition of all sections of the halo |
123 |
IF ( MOD(myface,2).EQ.1 ) THEN |
124 |
C east (nothing to change) |
125 |
c IF (exch2_isEedge(mytile).EQ.1) THEN |
126 |
c DO j = 1-OLy,sNy+OLy |
127 |
c DO i = 1,exchWidthX |
128 |
c Uphi(sNx+i,j,k,bi,bj) = dummy1(sNx+i,j) |
129 |
c Vphi(sNx+i,j,k,bi,bj) = dummy2(sNx+i,j) |
130 |
c ENDDO |
131 |
c ENDDO |
132 |
c ENDIF |
133 |
C west |
134 |
IF (exch2_isWedge(mytile).EQ.1) THEN |
135 |
DO j = 1-OLy,sNy+OLy |
136 |
DO i = 1,exchWidthX |
137 |
Uphi(1-i,j,k,bi,bj) = dummy2(1-i,j) |
138 |
Vphi(1-i,j,k,bi,bj) = dummy1(1-i,j)*negOne |
139 |
ENDDO |
140 |
ENDDO |
141 |
ENDIF |
142 |
C north |
143 |
IF (exch2_isNedge(mytile).EQ.1) THEN |
144 |
DO j = 1,exchWidthY |
145 |
DO i = 1-OLx,sNx+OLx |
146 |
Uphi(i,sNy+j,k,bi,bj) = dummy2(i,sNy+j)*negOne |
147 |
Vphi(i,sNy+j,k,bi,bj) = dummy1(i,sNy+j) |
148 |
ENDDO |
149 |
ENDDO |
150 |
ENDIF |
151 |
C south (nothing to change) |
152 |
c IF (exch2_isSedge(mytile).EQ.1) THEN |
153 |
c DO j = 1,exchWidthY |
154 |
c DO i = 1-OLx,sNx+OLx |
155 |
c Uphi(i,1-j,k,bi,bj) = dummy1(i,1-j) |
156 |
c Vphi(i,1-j,k,bi,bj) = dummy2(i,1-j) |
157 |
c ENDDO |
158 |
c ENDDO |
159 |
c ENDIF |
160 |
|
161 |
ELSE |
162 |
C now the even faces (share disposition of all sections of the halo) |
163 |
|
164 |
C east |
165 |
IF (exch2_isEedge(mytile).EQ.1) THEN |
166 |
DO j = 1-OLy,sNy+OLy |
167 |
DO i = 1,exchWidthX |
168 |
Uphi(sNx+i,j,k,bi,bj) = dummy2(sNx+i,j) |
169 |
Vphi(sNx+i,j,k,bi,bj) = dummy1(sNx+i,j)*negOne |
170 |
ENDDO |
171 |
ENDDO |
172 |
ENDIF |
173 |
C west (nothing to change) |
174 |
c IF (exch2_isWedge(mytile).EQ.1) THEN |
175 |
c DO j = 1-OLy,sNy+OLy |
176 |
c DO i = 1,exchWidthX |
177 |
c Uphi(1-i,j,k,bi,bj) = dummy1(1-i,j) |
178 |
c Vphi(1-i,j,k,bi,bj) = dummy2(1-i,j) |
179 |
c ENDDO |
180 |
c ENDDO |
181 |
c ENDIF |
182 |
C north (nothing to change) |
183 |
c IF (exch2_isNedge(mytile).EQ.1) THEN |
184 |
c DO j = 1,exchWidthY |
185 |
c DO i = 1-OLx,sNx+OLx |
186 |
c Uphi(i,sNy+j,k,bi,bj) = dummy1(i,sNy+j) |
187 |
c Vphi(i,sNy+j,k,bi,bj) = dummy2(i,sNy+j) |
188 |
c ENDDO |
189 |
c ENDDO |
190 |
c ENDIF |
191 |
C south |
192 |
IF (exch2_isSedge(mytile).EQ.1) THEN |
193 |
DO j = 1,exchWidthY |
194 |
DO i = 1-OLx,sNx+OLx |
195 |
Uphi(i,1-j,k,bi,bj) = dummy2(i,1-j)*negOne |
196 |
Vphi(i,1-j,k,bi,bj) = dummy1(i,1-j) |
197 |
ENDDO |
198 |
ENDDO |
199 |
ENDIF |
200 |
|
201 |
C end odd / even faces |
202 |
ENDIF |
203 |
|
204 |
C-- end of Loops on tile and level indices (k,bi,bj). |
205 |
ENDDO |
206 |
ENDDO |
207 |
ENDDO |
208 |
|
209 |
ELSE |
210 |
C--- not using CubedSphereExchange: |
211 |
|
212 |
#ifndef AUTODIFF_EXCH2 |
213 |
CALL EXCH_RX( Uphi, |
214 |
I OLw, OLe, OLs, OLn, myNz, |
215 |
I exchWidthX, exchWidthY, |
216 |
I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
217 |
CALL EXCH_RX( Vphi, |
218 |
I OLw, OLe, OLs, OLn, myNz, |
219 |
I exchWidthX, exchWidthY, |
220 |
I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
221 |
#endif |
222 |
|
223 |
C--- using or not using CubedSphereExchange: end |
224 |
ENDIF |
225 |
|
226 |
RETURN |
227 |
END |
228 |
|
229 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
230 |
|
231 |
CEH3 ;;; Local Variables: *** |
232 |
CEH3 ;;; mode:fortran *** |
233 |
CEH3 ;;; End: *** |