1 |
C $Header$ |
C $Header$ |
2 |
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C $Name$ |
3 |
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4 |
#include "CPP_EEOPTIONS.h" |
#include "CPP_OPTIONS.h" |
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6 |
SUBROUTINE CG2D( |
SUBROUTINE CG2D( |
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I cg2d_b, |
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U cg2d_x, |
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O firstResidual, |
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O lastResidual, |
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U numIters, |
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I myThid ) |
I myThid ) |
13 |
C /==========================================================\ |
C /==========================================================\ |
14 |
C | SUBROUTINE CG2D | |
C | SUBROUTINE CG2D | |
32 |
C | the threads to solve several different problems | |
C | the threads to solve several different problems | |
33 |
C | concurrently this implementation will not work. | |
C | concurrently this implementation will not work. | |
34 |
C \==========================================================/ |
C \==========================================================/ |
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IMPLICIT NONE |
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37 |
C === Global data === |
C === Global data === |
38 |
#include "SIZE.h" |
#include "SIZE.h" |
40 |
#include "PARAMS.h" |
#include "PARAMS.h" |
41 |
#include "GRID.h" |
#include "GRID.h" |
42 |
#include "CG2D.h" |
#include "CG2D.h" |
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#include "SURFACE.h" |
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45 |
C === Routine arguments === |
C === Routine arguments === |
46 |
C myThid - Thread on which I am working. |
C myThid - Thread on which I am working. |
47 |
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C cg2d_b - The source term or "right hand side" |
48 |
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C cg2d_x - The solution |
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C firstResidual - the initial residual before any iterations |
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C lastResidual - the actual residual reached |
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C numIters - Entry: the maximum number of iterations allowed |
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C Exit: the actual number of iterations used |
53 |
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_RL cg2d_b(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
54 |
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_RL cg2d_x(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
55 |
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_RL firstResidual |
56 |
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_RL lastResidual |
57 |
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INTEGER numIters |
58 |
INTEGER myThid |
INTEGER myThid |
59 |
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60 |
C === Local variables ==== |
C === Local variables ==== |
62 |
C actualResidual - residual |
C actualResidual - residual |
63 |
C bi - Block index in X and Y. |
C bi - Block index in X and Y. |
64 |
C bj |
C bj |
65 |
C etaN - Used in computing search directions |
C eta_qrN - Used in computing search directions |
66 |
C etaNM1 suffix N and NM1 denote current and |
C eta_qrNM1 suffix N and NM1 denote current and |
67 |
C cgBeta previous iterations respectively. |
C cgBeta previous iterations respectively. |
68 |
C alpha |
C alpha |
69 |
C sumRHS - Sum of right-hand-side. Sometimes this is a |
C sumRHS - Sum of right-hand-side. Sometimes this is a |
73 |
C err - Measure of residual of Ax - b, usually the norm. |
C err - Measure of residual of Ax - b, usually the norm. |
74 |
C I, J, N - Loop counters ( N counts CG iterations ) |
C I, J, N - Loop counters ( N counts CG iterations ) |
75 |
INTEGER actualIts |
INTEGER actualIts |
76 |
REAL actualResidual |
_RL actualResidual |
77 |
INTEGER bi, bj |
INTEGER bi, bj |
78 |
INTEGER I, J, it2d |
INTEGER I, J, it2d |
79 |
REAL err |
_RL err |
80 |
REAL etaN |
_RL eta_qrN |
81 |
REAL etaNM1 |
_RL eta_qrNM1 |
82 |
REAL cgBeta |
_RL cgBeta |
83 |
REAL alpha |
_RL alpha |
84 |
REAL sumRHS |
_RL sumRHS |
85 |
REAL rhsMax |
_RL rhsMax |
86 |
REAL rhsNorm |
_RL rhsNorm |
87 |
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|
88 |
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INTEGER OLw |
89 |
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INTEGER OLe |
90 |
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INTEGER OLn |
91 |
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INTEGER OLs |
92 |
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INTEGER exchWidthX |
93 |
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INTEGER exchWidthY |
94 |
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INTEGER myNz |
95 |
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96 |
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97 |
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CcnhDebugStarts |
98 |
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C CHARACTER*(MAX_LEN_FNAM) suff |
99 |
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CcnhDebugEnds |
100 |
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101 |
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102 |
C-- Initialise inverter |
C-- Initialise inverter |
103 |
etaNBuf(1,myThid) = 0. D0 |
eta_qrNM1 = 1. _d 0 |
104 |
errBuf(1,myThid) = 0. D0 |
|
105 |
sumRHSBuf(1,myThid) = 0. D0 |
CcnhDebugStarts |
106 |
etaNM1 = 1. D0 |
C _EXCH_XY_R8( cg2d_b, myThid ) |
107 |
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C CALL PLOT_FIELD_XYRL( cg2d_b, 'CG2D.0 CG2D_B' , 1, myThid ) |
108 |
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C suff = 'unnormalised' |
109 |
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C CALL WRITE_FLD_XY_RL ( 'cg2d_b.',suff, cg2d_b, 1, myThid) |
110 |
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C STOP |
111 |
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CcnhDebugEnds |
112 |
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113 |
C-- Normalise RHS |
C-- Normalise RHS |
114 |
rhsMax = 0. _d 0 |
rhsMax = 0. _d 0 |
122 |
ENDDO |
ENDDO |
123 |
ENDDO |
ENDDO |
124 |
ENDDO |
ENDDO |
125 |
rhsMaxBuf(1,myThid) = rhsMax |
|
126 |
_GLOBAL_MAX_R8( rhsMaxbuf, rhsMax, myThid ) |
IF (cg2dNormaliseRHS) THEN |
127 |
rhsMax = rhsMaxBuf(1,1) |
C- Normalise RHS : |
128 |
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#ifdef LETS_MAKE_JAM |
129 |
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C _GLOBAL_MAX_R8( rhsMax, myThid ) |
130 |
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rhsMax=1. |
131 |
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#else |
132 |
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_GLOBAL_MAX_R8( rhsMax, myThid ) |
133 |
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Catm rhsMax=1. |
134 |
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#endif |
135 |
rhsNorm = 1. _d 0 |
rhsNorm = 1. _d 0 |
136 |
IF ( rhsMax .NE. 0. ) rhsNorm = 1. _d 0 / rhsMax |
IF ( rhsMax .NE. 0. ) rhsNorm = 1. _d 0 / rhsMax |
137 |
DO bj=myByLo(myThid),myByHi(myThid) |
DO bj=myByLo(myThid),myByHi(myThid) |
144 |
ENDDO |
ENDDO |
145 |
ENDDO |
ENDDO |
146 |
ENDDO |
ENDDO |
147 |
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C- end Normalise RHS |
148 |
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ENDIF |
149 |
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150 |
C-- Update overlaps |
C-- Update overlaps |
151 |
_EXCH_XY_R8( cg2d_b, myThid ) |
_EXCH_XY_R8( cg2d_b, myThid ) |
152 |
_EXCH_XY_R8( cg2d_x, myThid ) |
_EXCH_XY_R8( cg2d_x, myThid ) |
153 |
CcnhDebugStarts |
CcnhDebugStarts |
154 |
C CALL PLOT_FIELD_XYRL( cg2d_b, 'CG2D.1 CG2D_B' , 1, myThid ) |
C CALL PLOT_FIELD_XYRL( cg2d_b, 'CG2D.1 CG2D_B' , 1, myThid ) |
155 |
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C suff = 'normalised' |
156 |
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C CALL WRITE_FLD_XY_RL ( 'cg2d_b.',suff, cg2d_b, 1, myThid) |
157 |
CcnhDebugEnds |
CcnhDebugEnds |
158 |
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159 |
C-- Initial residual calculation |
C-- Initial residual calculation |
173 |
& -aW2d(I+1,J ,bi,bj)*cg2d_x(I ,J ,bi,bj) |
& -aW2d(I+1,J ,bi,bj)*cg2d_x(I ,J ,bi,bj) |
174 |
& -aS2d(I ,J ,bi,bj)*cg2d_x(I ,J ,bi,bj) |
& -aS2d(I ,J ,bi,bj)*cg2d_x(I ,J ,bi,bj) |
175 |
& -aS2d(I ,J+1,bi,bj)*cg2d_x(I ,J ,bi,bj) |
& -aS2d(I ,J+1,bi,bj)*cg2d_x(I ,J ,bi,bj) |
176 |
& -freeSurfFac*_rA(i,j,bi,bj)* |
& -freeSurfFac*_rA(i,j,bi,bj)*recip_Bo(i,j,bi,bj)* |
177 |
& cg2d_x(I ,J ,bi,bj)/deltaTMom/deltaTMom*cg2dNorm |
& cg2d_x(I ,J ,bi,bj)/deltaTMom/deltaTMom*cg2dNorm |
178 |
& ) |
& ) |
179 |
err = err + |
err = err + |
184 |
ENDDO |
ENDDO |
185 |
ENDDO |
ENDDO |
186 |
ENDDO |
ENDDO |
187 |
_EXCH_XY_R8( cg2d_r, myThid ) |
C _EXCH_XY_R8( cg2d_r, myThid ) |
188 |
_EXCH_XY_R8( cg2d_s, myThid ) |
#ifdef LETS_MAKE_JAM |
189 |
sumRHSBuf(1,myThid) = sumRHS |
CALL EXCH_XY_O1_R8_JAM( cg2d_r ) |
190 |
_GLOBAL_SUM_R8( sumRHSBuf , sumRHS, myThid ) |
#else |
191 |
sumRHS = sumRHSBuf(1,1) |
OLw = 1 |
192 |
errBuf(1,myThid) = err |
OLe = 1 |
193 |
C WRITE(6,*) ' mythid, err = ', mythid, SQRT(err) |
OLn = 1 |
194 |
_GLOBAL_SUM_R8( errBuf , err , myThid ) |
OLs = 1 |
195 |
err = errBuf(1,1) |
exchWidthX = 1 |
196 |
C write(0,*) 'cg2d: Sum(rhs) = ',sumRHS |
exchWidthY = 1 |
197 |
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myNz = 1 |
198 |
actualIts = 0 |
IF (useCubedSphereExchange) THEN |
199 |
actualResidual = SQRT(err) |
CALL EXCH_RL_CUBE( cg2d_r, |
200 |
C _BARRIER |
I OLw, OLe, OLs, OLn, myNz, |
201 |
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I exchWidthX, exchWidthY, |
202 |
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I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
203 |
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ELSE |
204 |
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CALL EXCH_RL( cg2d_r, |
205 |
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I OLw, OLe, OLs, OLn, myNz, |
206 |
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I exchWidthX, exchWidthY, |
207 |
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I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
208 |
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ENDIF |
209 |
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#endif |
210 |
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C _EXCH_XY_R8( cg2d_s, myThid ) |
211 |
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#ifdef LETS_MAKE_JAM |
212 |
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CALL EXCH_XY_O1_R8_JAM( cg2d_s ) |
213 |
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#else |
214 |
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OLw = 1 |
215 |
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OLe = 1 |
216 |
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OLn = 1 |
217 |
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OLs = 1 |
218 |
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exchWidthX = 1 |
219 |
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exchWidthY = 1 |
220 |
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myNz = 1 |
221 |
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IF (useCubedSphereExchange) THEN |
222 |
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CALL EXCH_RL_CUBE( cg2d_s, |
223 |
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I OLw, OLe, OLs, OLn, myNz, |
224 |
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I exchWidthX, exchWidthY, |
225 |
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I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
226 |
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ELSE |
227 |
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CALL EXCH_RL( cg2d_s, |
228 |
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I OLw, OLe, OLs, OLn, myNz, |
229 |
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I exchWidthX, exchWidthY, |
230 |
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I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
231 |
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ENDIF |
232 |
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#endif |
233 |
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_GLOBAL_SUM_R8( sumRHS, myThid ) |
234 |
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_GLOBAL_SUM_R8( err , myThid ) |
235 |
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err = SQRT(err) |
236 |
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actualIts = 0 |
237 |
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actualResidual = err |
238 |
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239 |
_BEGIN_MASTER( myThid ) |
_BEGIN_MASTER( myThid ) |
240 |
WRITE(0,*) ' CG2D iters, err = ', actualIts, actualResidual |
write(*,'(A,1P2E22.14)')' cg2d: Sum(rhs),rhsMax = ', |
241 |
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& sumRHS,rhsMax |
242 |
_END_MASTER( ) |
_END_MASTER( ) |
243 |
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C _BARRIER |
244 |
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c _BEGIN_MASTER( myThid ) |
245 |
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c WRITE(*,'(A,I6,1PE30.14)') ' CG2D iters, err = ', |
246 |
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c & actualIts, actualResidual |
247 |
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c _END_MASTER( ) |
248 |
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firstResidual=actualResidual |
249 |
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250 |
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IF ( err .LT. cg2dTolerance ) GOTO 11 |
251 |
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252 |
C >>>>>>>>>>>>>>> BEGIN SOLVER <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
C >>>>>>>>>>>>>>> BEGIN SOLVER <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
253 |
DO 10 it2d=1, cg2dMaxIters |
DO 10 it2d=1, numIters |
254 |
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|
255 |
CcnhDebugStarts |
CcnhDebugStarts |
256 |
C WRITE(0,*) ' CG2D: Iteration ',it2d-1,' residual = ',actualResidual |
C WRITE(*,*) ' CG2D: Iteration ',it2d-1,' residual = ', |
257 |
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C & actualResidual |
258 |
CcnhDebugEnds |
CcnhDebugEnds |
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IF ( err .LT. cg2dTargetResidual ) GOTO 11 |
|
259 |
C-- Solve preconditioning equation and update |
C-- Solve preconditioning equation and update |
260 |
C-- conjugate direction vector "s". |
C-- conjugate direction vector "s". |
261 |
etaN = 0. _d 0 |
eta_qrN = 0. _d 0 |
262 |
DO bj=myByLo(myThid),myByHi(myThid) |
DO bj=myByLo(myThid),myByHi(myThid) |
263 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
DO bi=myBxLo(myThid),myBxHi(myThid) |
264 |
DO J=1,sNy |
DO J=1,sNy |
272 |
CcnhDebugStarts |
CcnhDebugStarts |
273 |
C cg2d_q(I,J,bi,bj) = cg2d_r(I ,J ,bi,bj) |
C cg2d_q(I,J,bi,bj) = cg2d_r(I ,J ,bi,bj) |
274 |
CcnhDebugEnds |
CcnhDebugEnds |
275 |
etaN = etaN |
eta_qrN = eta_qrN |
276 |
& +cg2d_q(I,J,bi,bj)*cg2d_r(I,J,bi,bj) |
& +cg2d_q(I,J,bi,bj)*cg2d_r(I,J,bi,bj) |
277 |
ENDDO |
ENDDO |
278 |
ENDDO |
ENDDO |
279 |
ENDDO |
ENDDO |
280 |
ENDDO |
ENDDO |
281 |
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|
282 |
etanBuf(1,myThid) = etaN |
_GLOBAL_SUM_R8(eta_qrN, myThid) |
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_GLOBAL_SUM_R8(etaNbuf,etaN, myThid) |
|
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etaN = etaNBuf(1,1) |
|
283 |
CcnhDebugStarts |
CcnhDebugStarts |
284 |
C WRITE(0,*) ' CG2D: Iteration ',it2d-1,' etaN = ',etaN |
C WRITE(*,*) ' CG2D: Iteration ',it2d-1,' eta_qrN = ',eta_qrN |
285 |
CcnhDebugEnds |
CcnhDebugEnds |
286 |
cgBeta = etaN/etaNM1 |
cgBeta = eta_qrN/eta_qrNM1 |
287 |
CcnhDebugStarts |
CcnhDebugStarts |
288 |
C WRITE(0,*) ' CG2D: Iteration ',it2d-1,' beta = ',cgBeta |
C WRITE(*,*) ' CG2D: Iteration ',it2d-1,' beta = ',cgBeta |
289 |
CcnhDebugEnds |
CcnhDebugEnds |
290 |
etaNM1 = etaN |
eta_qrNM1 = eta_qrN |
291 |
|
|
292 |
DO bj=myByLo(myThid),myByHi(myThid) |
DO bj=myByLo(myThid),myByHi(myThid) |
293 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
DO bi=myBxLo(myThid),myBxHi(myThid) |
294 |
DO J=1,sNy |
DO J=1,sNy |
295 |
DO I=1,sNx |
DO I=1,sNx |
296 |
cg2d_s(I,J,bi,bj) = cg2d_q(I,J,bi,bj) + cgBeta*cg2d_s(I,J,bi,bj) |
cg2d_s(I,J,bi,bj) = cg2d_q(I,J,bi,bj) |
297 |
|
& + cgBeta*cg2d_s(I,J,bi,bj) |
298 |
ENDDO |
ENDDO |
299 |
ENDDO |
ENDDO |
300 |
ENDDO |
ENDDO |
302 |
|
|
303 |
C-- Do exchanges that require messages i.e. between |
C-- Do exchanges that require messages i.e. between |
304 |
C-- processes. |
C-- processes. |
305 |
_EXCH_XY_R8( cg2d_s, myThid ) |
C _EXCH_XY_R8( cg2d_s, myThid ) |
306 |
|
#ifdef LETS_MAKE_JAM |
307 |
|
CALL EXCH_XY_O1_R8_JAM( cg2d_s ) |
308 |
|
#else |
309 |
|
OLw = 1 |
310 |
|
OLe = 1 |
311 |
|
OLn = 1 |
312 |
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OLs = 1 |
313 |
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exchWidthX = 1 |
314 |
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exchWidthY = 1 |
315 |
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myNz = 1 |
316 |
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IF (useCubedSphereExchange) THEN |
317 |
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CALL EXCH_RL_CUBE( cg2d_s, |
318 |
|
I OLw, OLe, OLs, OLn, myNz, |
319 |
|
I exchWidthX, exchWidthY, |
320 |
|
I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
321 |
|
ELSE |
322 |
|
CALL EXCH_RL( cg2d_s, |
323 |
|
I OLw, OLe, OLs, OLn, myNz, |
324 |
|
I exchWidthX, exchWidthY, |
325 |
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I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
326 |
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ENDIF |
327 |
|
#endif |
328 |
|
|
329 |
C== Evaluate laplace operator on conjugate gradient vector |
C== Evaluate laplace operator on conjugate gradient vector |
330 |
C== q = A.s |
C== q = A.s |
342 |
& -aW2d(I+1,J ,bi,bj)*cg2d_s(I ,J ,bi,bj) |
& -aW2d(I+1,J ,bi,bj)*cg2d_s(I ,J ,bi,bj) |
343 |
& -aS2d(I ,J ,bi,bj)*cg2d_s(I ,J ,bi,bj) |
& -aS2d(I ,J ,bi,bj)*cg2d_s(I ,J ,bi,bj) |
344 |
& -aS2d(I ,J+1,bi,bj)*cg2d_s(I ,J ,bi,bj) |
& -aS2d(I ,J+1,bi,bj)*cg2d_s(I ,J ,bi,bj) |
345 |
& -freeSurfFac*_rA(i,j,bi,bj)* |
& -freeSurfFac*_rA(i,j,bi,bj)*recip_Bo(i,j,bi,bj)* |
346 |
& cg2d_s(I ,J ,bi,bj)/deltaTMom/deltaTMom*cg2dNorm |
& cg2d_s(I ,J ,bi,bj)/deltaTMom/deltaTMom*cg2dNorm |
347 |
alpha = alpha+cg2d_s(I,J,bi,bj)*cg2d_q(I,J,bi,bj) |
alpha = alpha+cg2d_s(I,J,bi,bj)*cg2d_q(I,J,bi,bj) |
348 |
ENDDO |
ENDDO |
349 |
ENDDO |
ENDDO |
350 |
ENDDO |
ENDDO |
351 |
ENDDO |
ENDDO |
352 |
alphaBuf(1,myThid) = alpha |
_GLOBAL_SUM_R8(alpha,myThid) |
|
_GLOBAL_SUM_R8(alphaBuf,alpha,myThid) |
|
|
alpha = alphaBuf(1,1) |
|
353 |
CcnhDebugStarts |
CcnhDebugStarts |
354 |
C WRITE(0,*) ' CG2D: Iteration ',it2d-1,' SUM(s*q)= ',alpha |
C WRITE(*,*) ' CG2D: Iteration ',it2d-1,' SUM(s*q)= ',alpha |
355 |
CcnhDebugEnds |
CcnhDebugEnds |
356 |
alpha = etaN/alpha |
alpha = eta_qrN/alpha |
357 |
CcnhDebugStarts |
CcnhDebugStarts |
358 |
C WRITE(0,*) ' CG2D: Iteration ',it2d-1,' alpha= ',alpha |
C WRITE(*,*) ' CG2D: Iteration ',it2d-1,' alpha= ',alpha |
359 |
CcnhDebugEnds |
CcnhDebugEnds |
360 |
|
|
361 |
C== Update solution and residual vectors |
C== Update solution and residual vectors |
373 |
ENDDO |
ENDDO |
374 |
ENDDO |
ENDDO |
375 |
|
|
376 |
errBuf(1,myThid) = err |
_GLOBAL_SUM_R8( err , myThid ) |
|
_GLOBAL_SUM_R8( errBuf , err , myThid ) |
|
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err = errBuf(1,1) |
|
377 |
err = SQRT(err) |
err = SQRT(err) |
378 |
actualIts = it2d |
actualIts = it2d |
379 |
actualResidual = err |
actualResidual = err |
380 |
IF ( err .LT. cg2dTargetResidual ) GOTO 11 |
IF ( err .LT. cg2dTolerance ) GOTO 11 |
381 |
_EXCH_XY_R8(cg2d_r, myThid ) |
C _EXCH_XY_R8(cg2d_r, myThid ) |
382 |
|
#ifdef LETS_MAKE_JAM |
383 |
|
CALL EXCH_XY_O1_R8_JAM( cg2d_r ) |
384 |
|
#else |
385 |
|
OLw = 1 |
386 |
|
OLe = 1 |
387 |
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OLn = 1 |
388 |
|
OLs = 1 |
389 |
|
exchWidthX = 1 |
390 |
|
exchWidthY = 1 |
391 |
|
myNz = 1 |
392 |
|
IF (useCubedSphereExchange) THEN |
393 |
|
CALL EXCH_RL_CUBE( cg2d_r, |
394 |
|
I OLw, OLe, OLs, OLn, myNz, |
395 |
|
I exchWidthX, exchWidthY, |
396 |
|
I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
397 |
|
ELSE |
398 |
|
CALL EXCH_RL( cg2d_r, |
399 |
|
I OLw, OLe, OLs, OLn, myNz, |
400 |
|
I exchWidthX, exchWidthY, |
401 |
|
I FORWARD_SIMULATION, EXCH_UPDATE_CORNERS, myThid ) |
402 |
|
ENDIF |
403 |
|
#endif |
404 |
|
|
405 |
10 CONTINUE |
10 CONTINUE |
406 |
11 CONTINUE |
11 CONTINUE |
407 |
|
|
408 |
|
IF (cg2dNormaliseRHS) THEN |
409 |
C-- Un-normalise the answer |
C-- Un-normalise the answer |
410 |
DO bj=myByLo(myThid),myByHi(myThid) |
DO bj=myByLo(myThid),myByHi(myThid) |
411 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
DO bi=myBxLo(myThid),myBxHi(myThid) |
412 |
DO J=1,sNy |
DO J=1,sNy |
413 |
DO I=1,sNx |
DO I=1,sNx |
414 |
cg2d_x(I ,J ,bi,bj) = cg2d_x(I ,J ,bi,bj)/rhsNorm |
cg2d_x(I ,J ,bi,bj) = cg2d_x(I ,J ,bi,bj)/rhsNorm |
415 |
|
ENDDO |
416 |
|
ENDDO |
417 |
ENDDO |
ENDDO |
418 |
ENDDO |
ENDDO |
419 |
ENDDO |
ENDIF |
|
ENDDO |
|
420 |
|
|
421 |
_EXCH_XY_R8(cg2d_x, myThid ) |
C The following exchange was moved up to solve_for_pressure |
422 |
_BEGIN_MASTER( myThid ) |
C for compatibility with TAMC. |
423 |
WRITE(0,*) ' CG2D iters, err = ', actualIts, actualResidual |
C _EXCH_XY_R8(cg2d_x, myThid ) |
424 |
_END_MASTER( ) |
c _BEGIN_MASTER( myThid ) |
425 |
|
c WRITE(*,'(A,I6,1PE30.14)') ' CG2D iters, err = ', |
426 |
|
c & actualIts, actualResidual |
427 |
|
c _END_MASTER( ) |
428 |
|
|
429 |
|
C-- Return parameters to caller |
430 |
|
lastResidual=actualResidual |
431 |
|
numIters=actualIts |
432 |
|
|
433 |
CcnhDebugStarts |
CcnhDebugStarts |
434 |
C CALL PLOT_FIELD_XYRL( cg2d_x, 'CALC_MOM_RHS CG2D_X' , 1, myThid ) |
C CALL PLOT_FIELD_XYRL( cg2d_x, 'CALC_MOM_RHS CG2D_X' , 1, myThid ) |
452 |
C ENDDO |
C ENDDO |
453 |
C ENDDO |
C ENDDO |
454 |
C ENDDO |
C ENDDO |
455 |
C errBuf(1,myThid) = err |
C _GLOBAL_SUM_R8( err , myThid ) |
456 |
C _GLOBAL_SUM_R8( errBuf , err , myThid ) |
C write(*,*) 'cg2d: Ax - b = ',SQRT(err) |
|
C err = errBuf(1,1) |
|
|
C write(0,*) 'cg2d: Ax - b = ',SQRT(err) |
|
457 |
CcnhDebugEnds |
CcnhDebugEnds |
458 |
|
|
459 |
|
RETURN |
460 |
END |
END |