1 |
jmc |
1.15 |
C $Header: /u/gcmpack/MITgcm/model/src/cg3d.F,v 1.14 2004/12/14 16:54:08 edhill Exp $ |
2 |
adcroft |
1.10 |
C $Name: $ |
3 |
adcroft |
1.1 |
|
4 |
edhill |
1.13 |
#include "PACKAGES_CONFIG.h" |
5 |
adcroft |
1.1 |
#include "CPP_OPTIONS.h" |
6 |
|
|
|
7 |
|
|
#define VERBOSE |
8 |
|
|
|
9 |
cnh |
1.12 |
CBOP |
10 |
|
|
C !ROUTINE: CG3D |
11 |
|
|
C !INTERFACE: |
12 |
adcroft |
1.1 |
SUBROUTINE CG3D( |
13 |
adcroft |
1.11 |
I cg3d_b, |
14 |
|
|
U cg3d_x, |
15 |
|
|
O firstResidual, |
16 |
|
|
O lastResidual, |
17 |
|
|
U numIters, |
18 |
adcroft |
1.1 |
I myThid ) |
19 |
cnh |
1.12 |
C !DESCRIPTION: \bv |
20 |
|
|
C *==========================================================* |
21 |
|
|
C | SUBROUTINE CG3D |
22 |
|
|
C | o Three-dimensional grid problem conjugate-gradient |
23 |
|
|
C | inverter (with preconditioner). |
24 |
|
|
C *==========================================================* |
25 |
|
|
C | Con. grad is an iterative procedure for solving Ax = b. |
26 |
|
|
C | It requires the A be symmetric. |
27 |
|
|
C | This implementation assumes A is a seven-diagonal |
28 |
|
|
C | matrix of the form that arises in the discrete |
29 |
|
|
C | representation of the del^2 operator in a |
30 |
|
|
C | three-dimensional space. |
31 |
|
|
C | Notes: |
32 |
|
|
C | ====== |
33 |
|
|
C | This implementation can support shared-memory |
34 |
|
|
C | multi-threaded execution. In order to do this COMMON |
35 |
|
|
C | blocks are used for many of the arrays - even ones that |
36 |
|
|
C | are only used for intermedaite results. This design is |
37 |
|
|
C | OK if you want to all the threads to collaborate on |
38 |
|
|
C | solving the same problem. On the other hand if you want |
39 |
|
|
C | the threads to solve several different problems |
40 |
|
|
C | concurrently this implementation will not work. |
41 |
|
|
C *==========================================================* |
42 |
|
|
C \ev |
43 |
|
|
|
44 |
|
|
C !USES: |
45 |
adcroft |
1.1 |
IMPLICIT NONE |
46 |
|
|
C === Global data === |
47 |
|
|
#include "SIZE.h" |
48 |
|
|
#include "EEPARAMS.h" |
49 |
|
|
#include "PARAMS.h" |
50 |
|
|
#include "GRID.h" |
51 |
|
|
#include "CG3D.h" |
52 |
|
|
|
53 |
cnh |
1.12 |
C !INPUT/OUTPUT PARAMETERS: |
54 |
adcroft |
1.1 |
C === Routine arguments === |
55 |
adcroft |
1.11 |
C myThid - Thread on which I am working. |
56 |
|
|
C cg2d_b - The source term or "right hand side" |
57 |
|
|
C cg2d_x - The solution |
58 |
|
|
C firstResidual - the initial residual before any iterations |
59 |
|
|
C lastResidual - the actual residual reached |
60 |
|
|
C numIters - Entry: the maximum number of iterations allowed |
61 |
|
|
C Exit: the actual number of iterations used |
62 |
|
|
_RL cg3d_b(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
63 |
|
|
_RL cg3d_x(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
64 |
|
|
_RL firstResidual |
65 |
|
|
_RL lastResidual |
66 |
|
|
INTEGER numIters |
67 |
adcroft |
1.1 |
INTEGER myThid |
68 |
|
|
|
69 |
adcroft |
1.11 |
|
70 |
adcroft |
1.4 |
#ifdef ALLOW_NONHYDROSTATIC |
71 |
|
|
|
72 |
cnh |
1.12 |
C !LOCAL VARIABLES: |
73 |
adcroft |
1.1 |
C === Local variables ==== |
74 |
|
|
C actualIts - Number of iterations taken |
75 |
|
|
C actualResidual - residual |
76 |
|
|
C bi - Block index in X and Y. |
77 |
|
|
C bj |
78 |
jmc |
1.6 |
C eta_qrN - Used in computing search directions |
79 |
|
|
C eta_qrNM1 suffix N and NM1 denote current and |
80 |
adcroft |
1.1 |
C cgBeta previous iterations respectively. |
81 |
|
|
C alpha |
82 |
|
|
C sumRHS - Sum of right-hand-side. Sometimes this is a |
83 |
|
|
C useful debuggin/trouble shooting diagnostic. |
84 |
|
|
C For neumann problems sumRHS needs to be ~0. |
85 |
|
|
C or they converge at a non-zero residual. |
86 |
|
|
C err - Measure of residual of Ax - b, usually the norm. |
87 |
|
|
C I, J, N - Loop counters ( N counts CG iterations ) |
88 |
|
|
INTEGER actualIts |
89 |
|
|
_RL actualResidual |
90 |
|
|
INTEGER bi, bj |
91 |
|
|
INTEGER I, J, K, it3d |
92 |
|
|
INTEGER KM1, KP1 |
93 |
jmc |
1.15 |
_RL err, errTile |
94 |
|
|
_RL eta_qrN, eta_qrNtile |
95 |
jmc |
1.6 |
_RL eta_qrNM1 |
96 |
adcroft |
1.1 |
_RL cgBeta |
97 |
jmc |
1.15 |
_RL alpha , alphaTile |
98 |
|
|
_RL sumRHS, sumRHStile |
99 |
adcroft |
1.1 |
_RL rhsMax |
100 |
|
|
_RL rhsNorm |
101 |
|
|
|
102 |
|
|
INTEGER OLw |
103 |
|
|
INTEGER OLe |
104 |
|
|
INTEGER OLn |
105 |
|
|
INTEGER OLs |
106 |
|
|
INTEGER exchWidthX |
107 |
|
|
INTEGER exchWidthY |
108 |
|
|
INTEGER myNz |
109 |
jmc |
1.7 |
_RL topLevTerm |
110 |
cnh |
1.12 |
CEOP |
111 |
edhill |
1.13 |
|
112 |
|
|
ceh3 needs an IF ( useNONHYDROSTATIC ) THEN |
113 |
|
|
|
114 |
adcroft |
1.1 |
|
115 |
|
|
C-- Initialise inverter |
116 |
jmc |
1.6 |
eta_qrNM1 = 1. D0 |
117 |
adcroft |
1.1 |
|
118 |
|
|
C-- Normalise RHS |
119 |
|
|
rhsMax = 0. _d 0 |
120 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
121 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
122 |
|
|
DO K=1,Nr |
123 |
|
|
DO J=1,sNy |
124 |
|
|
DO I=1,sNx |
125 |
|
|
cg3d_b(I,J,K,bi,bj) = cg3d_b(I,J,K,bi,bj)*cg3dNorm |
126 |
|
|
rhsMax = MAX(ABS(cg3d_b(I,J,K,bi,bj)),rhsMax) |
127 |
|
|
ENDDO |
128 |
|
|
ENDDO |
129 |
|
|
ENDDO |
130 |
|
|
ENDDO |
131 |
|
|
ENDDO |
132 |
adcroft |
1.2 |
_GLOBAL_MAX_R8( rhsMax, myThid ) |
133 |
adcroft |
1.1 |
rhsNorm = 1. _d 0 |
134 |
|
|
IF ( rhsMax .NE. 0. ) rhsNorm = 1. _d 0 / rhsMax |
135 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
136 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
137 |
|
|
DO K=1,Nr |
138 |
|
|
DO J=1,sNy |
139 |
|
|
DO I=1,sNx |
140 |
|
|
cg3d_b(I,J,K,bi,bj) = cg3d_b(I,J,K,bi,bj)*rhsNorm |
141 |
|
|
cg3d_x(I,J,K,bi,bj) = cg3d_x(I,J,K,bi,bj)*rhsNorm |
142 |
|
|
ENDDO |
143 |
|
|
ENDDO |
144 |
|
|
ENDDO |
145 |
|
|
ENDDO |
146 |
|
|
ENDDO |
147 |
|
|
|
148 |
|
|
C-- Update overlaps |
149 |
|
|
_EXCH_XYZ_R8( cg3d_b, myThid ) |
150 |
|
|
_EXCH_XYZ_R8( cg3d_x, myThid ) |
151 |
|
|
|
152 |
jmc |
1.7 |
C-- Initial residual calculation (with free-Surface term) |
153 |
adcroft |
1.1 |
err = 0. _d 0 |
154 |
|
|
sumRHS = 0. _d 0 |
155 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
156 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
157 |
jmc |
1.15 |
errTile = 0. _d 0 |
158 |
|
|
sumRHStile = 0. _d 0 |
159 |
adcroft |
1.1 |
DO K=1,Nr |
160 |
|
|
KM1 = K-1 |
161 |
|
|
IF ( K .EQ. 1 ) KM1 = 1 |
162 |
|
|
KP1 = K+1 |
163 |
|
|
IF ( K .EQ. Nr ) KP1 = 1 |
164 |
jmc |
1.7 |
topLevTerm = 0. |
165 |
|
|
IF ( K .EQ. 1) topLevTerm = freeSurfFac*cg3dNorm* |
166 |
|
|
& (horiVertRatio/gravity)/deltaTMom/deltaTMom |
167 |
adcroft |
1.1 |
DO J=1,sNy |
168 |
|
|
DO I=1,sNx |
169 |
|
|
cg3d_s(I,J,K,bi,bj) = 0. |
170 |
|
|
cg3d_r(I,J,K,bi,bj) = cg3d_b(I,J,K,bi,bj) -( 0. |
171 |
|
|
& +aW3d(I ,J ,K ,bi,bj)*cg3d_x(I-1,J ,K ,bi,bj) |
172 |
|
|
& +aW3d(I+1,J ,K ,bi,bj)*cg3d_x(I+1,J ,K ,bi,bj) |
173 |
|
|
& +aS3d(I ,J ,K ,bi,bj)*cg3d_x(I ,J-1,K ,bi,bj) |
174 |
|
|
& +aS3d(I ,J+1,K ,bi,bj)*cg3d_x(I ,J+1,K ,bi,bj) |
175 |
|
|
& +aV3d(I ,J ,K ,bi,bj)*cg3d_x(I ,J ,KM1,bi,bj) |
176 |
|
|
& +aV3d(I ,J ,KP1,bi,bj)*cg3d_x(I ,J ,KP1,bi,bj) |
177 |
|
|
& -aW3d(I ,J ,K ,bi,bj)*cg3d_x(I ,J ,K ,bi,bj) |
178 |
|
|
& -aW3d(I+1,J ,K ,bi,bj)*cg3d_x(I ,J ,K ,bi,bj) |
179 |
|
|
& -aS3d(I ,J ,K ,bi,bj)*cg3d_x(I ,J ,K ,bi,bj) |
180 |
|
|
& -aS3d(I ,J+1,K ,bi,bj)*cg3d_x(I ,J ,K ,bi,bj) |
181 |
|
|
& -aV3d(I ,J ,K ,bi,bj)*cg3d_x(I ,J ,K ,bi,bj) |
182 |
|
|
& -aV3d(I ,J ,KP1,bi,bj)*cg3d_x(I ,J ,K ,bi,bj) |
183 |
jmc |
1.7 |
& -topLevTerm*_rA(I,J,bi,bj)*cg3d_x(I,J,K,bi,bj) |
184 |
adcroft |
1.1 |
& ) |
185 |
jmc |
1.15 |
errTile = errTile |
186 |
adcroft |
1.1 |
& +cg3d_r(I,J,K,bi,bj)*cg3d_r(I,J,K,bi,bj) |
187 |
jmc |
1.15 |
sumRHStile = sumRHStile |
188 |
adcroft |
1.1 |
& +cg3d_b(I,J,K,bi,bj) |
189 |
|
|
ENDDO |
190 |
|
|
ENDDO |
191 |
|
|
ENDDO |
192 |
jmc |
1.15 |
err = err + errTile |
193 |
|
|
sumRHS = sumRHS + sumRHStile |
194 |
adcroft |
1.1 |
ENDDO |
195 |
|
|
ENDDO |
196 |
|
|
C _EXCH_XYZ_R8( cg3d_r, myThid ) |
197 |
|
|
OLw = 1 |
198 |
|
|
OLe = 1 |
199 |
|
|
OLn = 1 |
200 |
|
|
OLs = 1 |
201 |
|
|
exchWidthX = 1 |
202 |
|
|
exchWidthY = 1 |
203 |
|
|
myNz = Nr |
204 |
|
|
CALL EXCH_RL( cg3d_r, |
205 |
adcroft |
1.10 |
I OLw, OLe, OLs, OLn, myNz, |
206 |
adcroft |
1.1 |
I exchWidthX, exchWidthY, |
207 |
|
|
I FORWARD_SIMULATION, EXCH_IGNORE_CORNERS, myThid ) |
208 |
|
|
C _EXCH_XYZ_R8( cg3d_s, myThid ) |
209 |
|
|
OLw = 1 |
210 |
|
|
OLe = 1 |
211 |
|
|
OLn = 1 |
212 |
|
|
OLs = 1 |
213 |
|
|
exchWidthX = 1 |
214 |
|
|
exchWidthY = 1 |
215 |
|
|
myNz = Nr |
216 |
|
|
CALL EXCH_RL( cg3d_s, |
217 |
adcroft |
1.10 |
I OLw, OLe, OLs, OLn, myNz, |
218 |
adcroft |
1.1 |
I exchWidthX, exchWidthY, |
219 |
|
|
I FORWARD_SIMULATION, EXCH_IGNORE_CORNERS, myThid ) |
220 |
adcroft |
1.2 |
_GLOBAL_SUM_R8( sumRHS, myThid ) |
221 |
|
|
_GLOBAL_SUM_R8( err , myThid ) |
222 |
adcroft |
1.1 |
|
223 |
jmc |
1.15 |
IF ( debugLevel .GE. debLevZero ) THEN |
224 |
|
|
_BEGIN_MASTER( myThid ) |
225 |
|
|
write(*,'(A,1P2E22.14)') |
226 |
adcroft |
1.11 |
& ' cg3d: Sum(rhs),rhsMax = ',sumRHS,rhsMax |
227 |
jmc |
1.15 |
_END_MASTER( myThid ) |
228 |
|
|
ENDIF |
229 |
adcroft |
1.1 |
|
230 |
|
|
actualIts = 0 |
231 |
|
|
actualResidual = SQRT(err) |
232 |
|
|
C _BARRIER |
233 |
adcroft |
1.11 |
c _BEGIN_MASTER( myThid ) |
234 |
|
|
c WRITE(*,'(A,I6,1PE30.14)') ' CG3D iters, err = ', |
235 |
|
|
c & actualIts, actualResidual |
236 |
edhill |
1.14 |
c _END_MASTER( myThid ) |
237 |
adcroft |
1.11 |
firstResidual=actualResidual |
238 |
adcroft |
1.1 |
|
239 |
|
|
C >>>>>>>>>>>>>>> BEGIN SOLVER <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
240 |
|
|
DO 10 it3d=1, cg3dMaxIters |
241 |
|
|
|
242 |
|
|
CcnhDebugStarts |
243 |
|
|
#ifdef VERBOSE |
244 |
adcroft |
1.11 |
c IF ( mod(it3d-1,10).EQ.0) |
245 |
|
|
c & WRITE(*,*) ' CG3D: Iteration ',it3d-1, |
246 |
|
|
c & ' residual = ',actualResidual |
247 |
adcroft |
1.1 |
#endif |
248 |
|
|
CcnhDebugEnds |
249 |
|
|
IF ( actualResidual .LT. cg3dTargetResidual ) GOTO 11 |
250 |
|
|
C-- Solve preconditioning equation and update |
251 |
|
|
C-- conjugate direction vector "s". |
252 |
|
|
C Note. On the next to loops over all tiles the inner loop ranges |
253 |
|
|
C in sNx and sNy are expanded by 1 to avoid a communication |
254 |
|
|
C step. However this entails a bit of gynamastics because we only |
255 |
jmc |
1.6 |
C want eta_qrN for the interior points. |
256 |
|
|
eta_qrN = 0. _d 0 |
257 |
adcroft |
1.1 |
DO bj=myByLo(myThid),myByHi(myThid) |
258 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
259 |
jmc |
1.15 |
eta_qrNtile = 0. _d 0 |
260 |
adcroft |
1.1 |
DO K=1,1 |
261 |
|
|
DO J=1-1,sNy+1 |
262 |
|
|
DO I=1-1,sNx+1 |
263 |
|
|
cg3d_q(I,J,K,bi,bj) = |
264 |
|
|
& zMC(I ,J ,K,bi,bj)*cg3d_r(I ,J ,K,bi,bj) |
265 |
|
|
ENDDO |
266 |
|
|
ENDDO |
267 |
|
|
ENDDO |
268 |
|
|
DO K=2,Nr |
269 |
|
|
DO J=1-1,sNy+1 |
270 |
|
|
DO I=1-1,sNx+1 |
271 |
|
|
cg3d_q(I,J,K,bi,bj) = |
272 |
|
|
& zMC(I,J,K,bi,bj)*(cg3d_r(I,J,K ,bi,bj) |
273 |
|
|
& -zML(I,J,K,bi,bj)*cg3d_q(I,J,K-1,bi,bj)) |
274 |
|
|
ENDDO |
275 |
|
|
ENDDO |
276 |
|
|
ENDDO |
277 |
|
|
DO K=Nr,Nr |
278 |
|
|
caja IF (Nr .GT. 1) THEN |
279 |
|
|
caja DO J=1-1,sNy+1 |
280 |
|
|
caja DO I=1-1,sNx+1 |
281 |
|
|
caja cg3d_q(I,J,K,bi,bj) = |
282 |
|
|
caja & zMC(i,j,k,bi,bj)*(cg3d_r(i,j,k ,bi,bj) |
283 |
|
|
caja & -zML(i,j,k,bi,bj)*cg3d_q(i,j,k-1,bi,bj)) |
284 |
|
|
caja ENDDO |
285 |
|
|
caja ENDDO |
286 |
|
|
caja ENDIF |
287 |
|
|
DO J=1,sNy |
288 |
|
|
DO I=1,sNx |
289 |
jmc |
1.15 |
eta_qrNtile = eta_qrNtile |
290 |
adcroft |
1.1 |
& +cg3d_q(I,J,K,bi,bj)*cg3d_r(I,J,K,bi,bj) |
291 |
|
|
ENDDO |
292 |
|
|
ENDDO |
293 |
|
|
ENDDO |
294 |
|
|
DO K=Nr-1,1,-1 |
295 |
|
|
DO J=1-1,sNy+1 |
296 |
|
|
DO I=1-1,sNx+1 |
297 |
|
|
cg3d_q(I,J,K,bi,bj) = |
298 |
|
|
& cg3d_q(I,J,K,bi,bj) |
299 |
|
|
& -zMU(I,J,K,bi,bj)*cg3d_q(I,J,K+1,bi,bj) |
300 |
|
|
ENDDO |
301 |
|
|
ENDDO |
302 |
|
|
DO J=1,sNy |
303 |
|
|
DO I=1,sNx |
304 |
jmc |
1.15 |
eta_qrNtile = eta_qrNtile |
305 |
adcroft |
1.1 |
& +cg3d_q(I,J,K,bi,bj)*cg3d_r(I,J,K,bi,bj) |
306 |
|
|
ENDDO |
307 |
|
|
ENDDO |
308 |
|
|
ENDDO |
309 |
jmc |
1.15 |
eta_qrN = eta_qrN + eta_qrNtile |
310 |
adcroft |
1.1 |
ENDDO |
311 |
|
|
ENDDO |
312 |
|
|
caja |
313 |
jmc |
1.6 |
caja eta_qrN=0. |
314 |
adcroft |
1.1 |
caja DO bj=myByLo(myThid),myByHi(myThid) |
315 |
|
|
caja DO bi=myBxLo(myThid),myBxHi(myThid) |
316 |
|
|
caja DO K=1,Nr |
317 |
|
|
caja DO J=1,sNy |
318 |
|
|
caja DO I=1,sNx |
319 |
jmc |
1.6 |
caja eta_qrN = eta_qrN |
320 |
adcroft |
1.1 |
caja & +cg3d_q(I,J,K,bi,bj)*cg3d_r(I,J,K,bi,bj) |
321 |
|
|
caja ENDDO |
322 |
|
|
caja ENDDO |
323 |
|
|
caja ENDDO |
324 |
|
|
caja ENDDO |
325 |
|
|
caja ENDDO |
326 |
|
|
caja |
327 |
|
|
|
328 |
jmc |
1.6 |
_GLOBAL_SUM_R8(eta_qrN, myThid) |
329 |
adcroft |
1.1 |
CcnhDebugStarts |
330 |
heimbach |
1.8 |
C WRITE(*,*) ' CG3D: Iteration ',it3d-1,' eta_qrN = ',eta_qrN |
331 |
adcroft |
1.1 |
CcnhDebugEnds |
332 |
jmc |
1.6 |
cgBeta = eta_qrN/eta_qrNM1 |
333 |
adcroft |
1.1 |
CcnhDebugStarts |
334 |
heimbach |
1.8 |
C WRITE(*,*) ' CG3D: Iteration ',it3d-1,' beta = ',cgBeta |
335 |
adcroft |
1.1 |
CcnhDebugEnds |
336 |
jmc |
1.6 |
eta_qrNM1 = eta_qrN |
337 |
adcroft |
1.1 |
|
338 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
339 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
340 |
|
|
DO K=1,Nr |
341 |
|
|
DO J=1-1,sNy+1 |
342 |
|
|
DO I=1-1,sNx+1 |
343 |
|
|
cg3d_s(I,J,K,bi,bj) = cg3d_q(I,J,K,bi,bj) |
344 |
|
|
& + cgBeta*cg3d_s(I,J,K,bi,bj) |
345 |
|
|
ENDDO |
346 |
|
|
ENDDO |
347 |
|
|
ENDDO |
348 |
|
|
ENDDO |
349 |
|
|
ENDDO |
350 |
|
|
|
351 |
|
|
C== Evaluate laplace operator on conjugate gradient vector |
352 |
|
|
C== q = A.s |
353 |
|
|
alpha = 0. _d 0 |
354 |
jmc |
1.7 |
topLevTerm = freeSurfFac*cg3dNorm* |
355 |
|
|
& (horiVertRatio/gravity)/deltaTMom/deltaTMom |
356 |
adcroft |
1.1 |
DO bj=myByLo(myThid),myByHi(myThid) |
357 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
358 |
jmc |
1.15 |
alphaTile = 0. _d 0 |
359 |
adcroft |
1.1 |
IF ( Nr .GT. 1 ) THEN |
360 |
|
|
DO K=1,1 |
361 |
|
|
DO J=1,sNy |
362 |
|
|
DO I=1,sNx |
363 |
|
|
cg3d_q(I,J,K,bi,bj) = |
364 |
|
|
& aW3d(I ,J ,K ,bi,bj)*cg3d_s(I-1,J ,K ,bi,bj) |
365 |
|
|
& +aW3d(I+1,J ,K ,bi,bj)*cg3d_s(I+1,J ,K ,bi,bj) |
366 |
|
|
& +aS3d(I ,J ,K ,bi,bj)*cg3d_s(I ,J-1,K ,bi,bj) |
367 |
|
|
& +aS3d(I ,J+1,K ,bi,bj)*cg3d_s(I ,J+1,K ,bi,bj) |
368 |
|
|
& +aV3d(I ,J ,K+1,bi,bj)*cg3d_s(I ,J ,K+1,bi,bj) |
369 |
|
|
& -aW3d(I ,J ,K ,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
370 |
|
|
& -aW3d(I+1,J ,K ,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
371 |
|
|
& -aS3d(I ,J ,K ,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
372 |
|
|
& -aS3d(I ,J+1,K ,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
373 |
|
|
& -aV3d(I ,J ,K+1,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
374 |
jmc |
1.7 |
& -topLevTerm*_rA(I,J,bi,bj)*cg3d_s(I,J,K,bi,bj) |
375 |
jmc |
1.15 |
alphaTile = alphaTile |
376 |
|
|
& +cg3d_s(I,J,K,bi,bj)*cg3d_q(I,J,K,bi,bj) |
377 |
adcroft |
1.1 |
ENDDO |
378 |
|
|
ENDDO |
379 |
|
|
ENDDO |
380 |
|
|
ELSE |
381 |
|
|
DO K=1,1 |
382 |
|
|
DO J=1,sNy |
383 |
|
|
DO I=1,sNx |
384 |
|
|
cg3d_q(I,J,K,bi,bj) = |
385 |
|
|
& aW3d(I ,J ,K ,bi,bj)*cg3d_s(I-1,J ,K ,bi,bj) |
386 |
|
|
& +aW3d(I+1,J ,K ,bi,bj)*cg3d_s(I+1,J ,K ,bi,bj) |
387 |
|
|
& +aS3d(I ,J ,K ,bi,bj)*cg3d_s(I ,J-1,K ,bi,bj) |
388 |
|
|
& +aS3d(I ,J+1,K ,bi,bj)*cg3d_s(I ,J+1,K ,bi,bj) |
389 |
|
|
& -aW3d(I ,J ,K ,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
390 |
|
|
& -aW3d(I+1,J ,K ,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
391 |
|
|
& -aS3d(I ,J ,K ,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
392 |
|
|
& -aS3d(I ,J+1,K ,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
393 |
jmc |
1.7 |
& -topLevTerm*_rA(I,J,bi,bj)*cg3d_s(I,J,K,bi,bj) |
394 |
jmc |
1.15 |
alphaTile = alphaTile |
395 |
|
|
& +cg3d_s(I,J,K,bi,bj)*cg3d_q(I,J,K,bi,bj) |
396 |
adcroft |
1.1 |
ENDDO |
397 |
|
|
ENDDO |
398 |
|
|
ENDDO |
399 |
|
|
ENDIF |
400 |
|
|
DO K=2,Nr-1 |
401 |
|
|
DO J=1,sNy |
402 |
|
|
DO I=1,sNx |
403 |
|
|
cg3d_q(I,J,K,bi,bj) = |
404 |
|
|
& aW3d(I ,J ,K ,bi,bj)*cg3d_s(I-1,J ,K ,bi,bj) |
405 |
|
|
& +aW3d(I+1,J ,K ,bi,bj)*cg3d_s(I+1,J ,K ,bi,bj) |
406 |
|
|
& +aS3d(I ,J ,K ,bi,bj)*cg3d_s(I ,J-1,K ,bi,bj) |
407 |
|
|
& +aS3d(I ,J+1,K ,bi,bj)*cg3d_s(I ,J+1,K ,bi,bj) |
408 |
|
|
& +aV3d(I ,J ,K ,bi,bj)*cg3d_s(I ,J ,K-1,bi,bj) |
409 |
|
|
& +aV3d(I ,J ,K+1,bi,bj)*cg3d_s(I ,J ,K+1,bi,bj) |
410 |
|
|
& -aW3d(I ,J ,K ,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
411 |
|
|
& -aW3d(I+1,J ,K ,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
412 |
|
|
& -aS3d(I ,J ,K ,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
413 |
|
|
& -aS3d(I ,J+1,K ,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
414 |
|
|
& -aV3d(I ,J ,K ,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
415 |
|
|
& -aV3d(I ,J ,K+1,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
416 |
jmc |
1.15 |
alphaTile = alphaTile |
417 |
|
|
& +cg3d_s(I,J,K,bi,bj)*cg3d_q(I,J,K,bi,bj) |
418 |
adcroft |
1.1 |
ENDDO |
419 |
|
|
ENDDO |
420 |
|
|
ENDDO |
421 |
|
|
IF ( Nr .GT. 1 ) THEN |
422 |
|
|
DO K=Nr,Nr |
423 |
|
|
DO J=1,sNy |
424 |
|
|
DO I=1,sNx |
425 |
|
|
cg3d_q(I,J,K,bi,bj) = |
426 |
|
|
& aW3d(I ,J ,K ,bi,bj)*cg3d_s(I-1,J ,K ,bi,bj) |
427 |
|
|
& +aW3d(I+1,J ,K ,bi,bj)*cg3d_s(I+1,J ,K ,bi,bj) |
428 |
|
|
& +aS3d(I ,J ,K ,bi,bj)*cg3d_s(I ,J-1,K ,bi,bj) |
429 |
|
|
& +aS3d(I ,J+1,K ,bi,bj)*cg3d_s(I ,J+1,K ,bi,bj) |
430 |
|
|
& +aV3d(I ,J ,K ,bi,bj)*cg3d_s(I ,J ,K-1,bi,bj) |
431 |
|
|
& -aW3d(I ,J ,K ,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
432 |
|
|
& -aW3d(I+1,J ,K ,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
433 |
|
|
& -aS3d(I ,J ,K ,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
434 |
|
|
& -aS3d(I ,J+1,K ,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
435 |
|
|
& -aV3d(I ,J ,K ,bi,bj)*cg3d_s(I ,J ,K ,bi,bj) |
436 |
jmc |
1.15 |
alphaTile = alphaTile |
437 |
|
|
& +cg3d_s(I,J,K,bi,bj)*cg3d_q(I,J,K,bi,bj) |
438 |
adcroft |
1.1 |
ENDDO |
439 |
|
|
ENDDO |
440 |
|
|
ENDDO |
441 |
|
|
ENDIF |
442 |
jmc |
1.15 |
alpha = alpha + alphaTile |
443 |
adcroft |
1.1 |
ENDDO |
444 |
|
|
ENDDO |
445 |
adcroft |
1.2 |
_GLOBAL_SUM_R8(alpha,myThid) |
446 |
adcroft |
1.1 |
CcnhDebugStarts |
447 |
heimbach |
1.8 |
C WRITE(*,*) ' CG3D: Iteration ',it3d-1,' SUM(s*q)= ',alpha |
448 |
adcroft |
1.1 |
CcnhDebugEnds |
449 |
jmc |
1.6 |
alpha = eta_qrN/alpha |
450 |
adcroft |
1.1 |
CcnhDebugStarts |
451 |
heimbach |
1.8 |
C WRITE(*,*) ' CG3D: Iteration ',it3d-1,' alpha= ',alpha |
452 |
adcroft |
1.1 |
CcnhDebugEnds |
453 |
|
|
|
454 |
|
|
C== Update solution and residual vectors |
455 |
|
|
C Now compute "interior" points. |
456 |
|
|
err = 0. _d 0 |
457 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
458 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
459 |
jmc |
1.15 |
errTile = 0. _d 0 |
460 |
adcroft |
1.1 |
DO K=1,Nr |
461 |
|
|
DO J=1,sNy |
462 |
|
|
DO I=1,sNx |
463 |
|
|
cg3d_x(I,J,K,bi,bj)=cg3d_x(I,J,K,bi,bj) |
464 |
|
|
& +alpha*cg3d_s(I,J,K,bi,bj) |
465 |
|
|
cg3d_r(I,J,K,bi,bj)=cg3d_r(I,J,K,bi,bj) |
466 |
|
|
& -alpha*cg3d_q(I,J,K,bi,bj) |
467 |
jmc |
1.15 |
errTile = errTile |
468 |
|
|
& +cg3d_r(I,J,K,bi,bj)*cg3d_r(I,J,K,bi,bj) |
469 |
adcroft |
1.1 |
ENDDO |
470 |
|
|
ENDDO |
471 |
|
|
ENDDO |
472 |
jmc |
1.15 |
err = err + errTile |
473 |
adcroft |
1.1 |
ENDDO |
474 |
|
|
ENDDO |
475 |
|
|
|
476 |
adcroft |
1.2 |
_GLOBAL_SUM_R8( err , myThid ) |
477 |
adcroft |
1.1 |
err = SQRT(err) |
478 |
|
|
actualIts = it3d |
479 |
|
|
actualResidual = err |
480 |
|
|
IF ( actualResidual .LT. cg3dTargetResidual ) GOTO 11 |
481 |
|
|
C _EXCH_XYZ_R8(cg3d_r, myThid ) |
482 |
|
|
OLw = 1 |
483 |
|
|
OLe = 1 |
484 |
|
|
OLn = 1 |
485 |
|
|
OLs = 1 |
486 |
|
|
exchWidthX = 1 |
487 |
|
|
exchWidthY = 1 |
488 |
|
|
myNz = Nr |
489 |
|
|
CALL EXCH_RL( cg3d_r, |
490 |
adcroft |
1.10 |
I OLw, OLe, OLs, OLn, myNz, |
491 |
adcroft |
1.1 |
I exchWidthX, exchWidthY, |
492 |
|
|
I FORWARD_SIMULATION, EXCH_IGNORE_CORNERS, myThid ) |
493 |
|
|
|
494 |
|
|
10 CONTINUE |
495 |
|
|
11 CONTINUE |
496 |
|
|
|
497 |
|
|
C-- Un-normalise the answer |
498 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
499 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
500 |
|
|
DO K=1,Nr |
501 |
|
|
DO J=1,sNy |
502 |
|
|
DO I=1,sNx |
503 |
|
|
cg3d_x(I,J,K,bi,bj) = cg3d_x(I,J,K,bi,bj)/rhsNorm |
504 |
|
|
ENDDO |
505 |
|
|
ENDDO |
506 |
|
|
ENDDO |
507 |
|
|
ENDDO |
508 |
|
|
ENDDO |
509 |
|
|
|
510 |
adcroft |
1.3 |
Cadj _EXCH_XYZ_R8(cg3d_x, myThid ) |
511 |
adcroft |
1.11 |
c _BEGIN_MASTER( myThid ) |
512 |
|
|
c WRITE(*,'(A,I6,1PE30.14)') ' CG3D iters, err = ', |
513 |
|
|
c & actualIts, actualResidual |
514 |
edhill |
1.14 |
c _END_MASTER( myThid ) |
515 |
adcroft |
1.11 |
lastResidual=actualResidual |
516 |
|
|
numIters=actualIts |
517 |
adcroft |
1.1 |
|
518 |
|
|
#endif /* ALLOW_NONHYDROSTATIC */ |
519 |
|
|
|
520 |
|
|
RETURN |
521 |
|
|
END |