| 1 |
heimbach |
1.3.6.2 |
C $Header: /u/gcmpack/MITgcm/pkg/grdchk/grdchk_main.F,v 1.3.6.1 2002/05/30 19:55:17 heimbach Exp $ |
| 2 |
heimbach |
1.2 |
|
| 3 |
|
|
#include "CPP_OPTIONS.h" |
| 4 |
|
|
|
| 5 |
heimbach |
1.3 |
CBOI |
| 6 |
|
|
C |
| 7 |
|
|
C !TITLE: GRADIENT CHECK |
| 8 |
|
|
C !AUTHORS: mitgcm developers ( support@mitgcm.org ) |
| 9 |
|
|
C !AFFILIATION: Massachussetts Institute of Technology |
| 10 |
|
|
C !DATE: |
| 11 |
|
|
C !INTRODUCTION: gradient check package |
| 12 |
|
|
c \bv |
| 13 |
|
|
c Compare the gradients calculated by the adjoint model with |
| 14 |
|
|
c finite difference approximations. |
| 15 |
|
|
c |
| 16 |
|
|
C !CALLING SEQUENCE: |
| 17 |
|
|
c |
| 18 |
|
|
c the_model_main |
| 19 |
|
|
c | |
| 20 |
|
|
c |-- ctrl_unpack |
| 21 |
|
|
c |-- adthe_main_loop - unperturbed cost function and |
| 22 |
|
|
c |-- ctrl_pack adjoint gradient are computed here |
| 23 |
|
|
c | |
| 24 |
|
|
c |-- grdchk_main |
| 25 |
|
|
c | |
| 26 |
|
|
c |-- grdchk_init |
| 27 |
|
|
c |-- do icomp=... - loop over control vector elements |
| 28 |
|
|
c | |
| 29 |
|
|
c |-- grdchk_loc - determine location of icomp on grid |
| 30 |
|
|
c | |
| 31 |
|
|
c |-- grdchk_getxx - get control vector component from file |
| 32 |
|
|
c | perturb it and write back to file |
| 33 |
|
|
c |-- grdchk_getadxx - get gradient component calculated |
| 34 |
|
|
c | via adjoint |
| 35 |
|
|
c |-- the_main_loop - forward run and cost evaluation |
| 36 |
|
|
c | with perturbed control vector element |
| 37 |
|
|
c |-- calculate ratio of adj. vs. finite difference gradient |
| 38 |
|
|
c | |
| 39 |
|
|
c |-- grdchk_setxx - Reset control vector element |
| 40 |
|
|
c | |
| 41 |
|
|
c |-- grdchk_print - print results |
| 42 |
|
|
c \ev |
| 43 |
|
|
CEOI |
| 44 |
|
|
|
| 45 |
|
|
CBOP |
| 46 |
|
|
C !ROUTINE: grdchk_main |
| 47 |
|
|
C !INTERFACE: |
| 48 |
|
|
subroutine grdchk_main( mythid ) |
| 49 |
heimbach |
1.2 |
|
| 50 |
heimbach |
1.3 |
C !DESCRIPTION: \bv |
| 51 |
heimbach |
1.2 |
c ================================================================== |
| 52 |
|
|
c SUBROUTINE grdchk_main |
| 53 |
|
|
c ================================================================== |
| 54 |
|
|
c o Compare the gradients calculated by the adjoint model with |
| 55 |
|
|
c finite difference approximations. |
| 56 |
|
|
c started: Christian Eckert eckert@mit.edu 24-Feb-2000 |
| 57 |
heimbach |
1.3.6.1 |
c continued&finished: heimbach@mit.edu: 13-Jun-2001 |
| 58 |
|
|
c changed: mlosch@ocean.mit.edu: 09-May-2002 |
| 59 |
|
|
c - added centered difference vs. 1-sided difference option |
| 60 |
|
|
c - improved output format for readability |
| 61 |
|
|
c - added control variable hFacC |
| 62 |
|
|
c |
| 63 |
heimbach |
1.2 |
c ================================================================== |
| 64 |
|
|
c SUBROUTINE grdchk_main |
| 65 |
|
|
c ================================================================== |
| 66 |
heimbach |
1.3 |
C \ev |
| 67 |
heimbach |
1.2 |
|
| 68 |
heimbach |
1.3 |
C !USES: |
| 69 |
heimbach |
1.2 |
implicit none |
| 70 |
|
|
|
| 71 |
|
|
c == global variables == |
| 72 |
|
|
#include "SIZE.h" |
| 73 |
|
|
#include "EEPARAMS.h" |
| 74 |
|
|
#include "PARAMS.h" |
| 75 |
|
|
#include "grdchk.h" |
| 76 |
|
|
#include "cost.h" |
| 77 |
|
|
|
| 78 |
heimbach |
1.3 |
C !INPUT/OUTPUT PARAMETERS: |
| 79 |
heimbach |
1.2 |
c == routine arguments == |
| 80 |
|
|
integer mythid |
| 81 |
|
|
|
| 82 |
|
|
#ifdef ALLOW_GRADIENT_CHECK |
| 83 |
heimbach |
1.3 |
C !LOCAL VARIABLES: |
| 84 |
heimbach |
1.2 |
c == local variables == |
| 85 |
|
|
integer myiter |
| 86 |
|
|
_RL mytime |
| 87 |
|
|
integer bi, itlo, ithi |
| 88 |
|
|
integer bj, jtlo, jthi |
| 89 |
|
|
integer i, imin, imax |
| 90 |
|
|
integer j, jmin, jmax |
| 91 |
|
|
integer k |
| 92 |
|
|
|
| 93 |
|
|
integer jprocs |
| 94 |
|
|
integer proc_grdchk |
| 95 |
|
|
integer icomp |
| 96 |
|
|
integer ichknum |
| 97 |
|
|
integer icvrec |
| 98 |
|
|
integer jtile |
| 99 |
|
|
integer itile |
| 100 |
|
|
integer layer |
| 101 |
|
|
integer itilepos |
| 102 |
|
|
integer jtilepos |
| 103 |
|
|
integer itest |
| 104 |
|
|
integer ierr |
| 105 |
|
|
integer ierr_grdchk |
| 106 |
|
|
_RL gfd |
| 107 |
|
|
_RL fcref |
| 108 |
heimbach |
1.3.6.1 |
_RL fcpertplus, fcpertminus |
| 109 |
heimbach |
1.2 |
_RL ratio |
| 110 |
|
|
_RL xxmemo_ref |
| 111 |
|
|
_RL xxmemo_pert |
| 112 |
|
|
_RL adxxmemo |
| 113 |
|
|
|
| 114 |
|
|
cph( |
| 115 |
|
|
_RL tmpplot1(1-olx:snx+olx,1-oly:sny+oly,nr,nsx,nsy) |
| 116 |
|
|
_RL tmpplot2(1-olx:snx+olx,1-oly:sny+oly,nr,nsx,nsy) |
| 117 |
|
|
cph) |
| 118 |
|
|
|
| 119 |
heimbach |
1.3.6.1 |
Cml( |
| 120 |
|
|
_RL grdchk_epsfac |
| 121 |
|
|
Cml) |
| 122 |
|
|
|
| 123 |
heimbach |
1.2 |
c == end of interface == |
| 124 |
heimbach |
1.3 |
CEOP |
| 125 |
heimbach |
1.2 |
|
| 126 |
|
|
c-- Set the loop ranges. |
| 127 |
|
|
jtlo = mybylo(mythid) |
| 128 |
|
|
jthi = mybyhi(mythid) |
| 129 |
|
|
itlo = mybxlo(mythid) |
| 130 |
|
|
ithi = mybxhi(mythid) |
| 131 |
|
|
jmin = 1 |
| 132 |
|
|
jmax = sny |
| 133 |
|
|
imin = 1 |
| 134 |
|
|
imax = snx |
| 135 |
|
|
|
| 136 |
|
|
c-- initialise variables |
| 137 |
|
|
call grdchk_init( mythid ) |
| 138 |
|
|
|
| 139 |
|
|
c-- Compute the adjoint models' gradients. |
| 140 |
|
|
c-- Compute the unperturbed cost function. |
| 141 |
|
|
cph Gradient via adjoint has already been computed, |
| 142 |
|
|
cph and so has unperturbed cost function, |
| 143 |
|
|
cph assuming all xx_ fields are initialised to zero. |
| 144 |
|
|
|
| 145 |
|
|
fcref = fc |
| 146 |
|
|
ierr_grdchk = 0 |
| 147 |
|
|
|
| 148 |
|
|
cph( |
| 149 |
|
|
do bj = jtlo, jthi |
| 150 |
|
|
do bi = itlo, ithi |
| 151 |
|
|
do k = 1, nr |
| 152 |
|
|
do j = jmin, jmax |
| 153 |
|
|
do i = imin, imax |
| 154 |
|
|
tmpplot1(i,j,k,bi,bj) = 0. _d 0 |
| 155 |
|
|
tmpplot2(i,j,k,bi,bj) = 0. _d 0 |
| 156 |
|
|
end do |
| 157 |
|
|
end do |
| 158 |
|
|
end do |
| 159 |
|
|
end do |
| 160 |
|
|
end do |
| 161 |
|
|
cph) |
| 162 |
|
|
|
| 163 |
heimbach |
1.3.6.1 |
if ( useCentralDiff ) then |
| 164 |
|
|
grdchk_epsfac = 2. _d 0 |
| 165 |
|
|
else |
| 166 |
|
|
grdchk_epsfac = 1. _d 0 |
| 167 |
|
|
end if |
| 168 |
|
|
|
| 169 |
heimbach |
1.3.6.2 |
print *, 'ph-grd 3 -------------------------------' |
| 170 |
|
|
print ('(2a)'), |
| 171 |
|
|
& ' ph-grd 3 proc # i j k fc ref', |
| 172 |
|
|
& ' fc + eps fc - eps' |
| 173 |
|
|
print ('(2a)'), |
| 174 |
|
|
& ' ph-grd 3 proc # i j k adj grad', |
| 175 |
|
|
& ' fd grad 1 - fd/adj' |
| 176 |
|
|
|
| 177 |
heimbach |
1.2 |
c-- Compute the finite difference approximations. |
| 178 |
|
|
c-- Cycle through all processes doing NINT(nend-nbeg+1)/nstep |
| 179 |
|
|
c-- gradient checks. |
| 180 |
|
|
do jprocs = 1,numberOfProcs |
| 181 |
|
|
proc_grdchk = jprocs - 1 |
| 182 |
|
|
|
| 183 |
|
|
if ( myProcId .eq. proc_grdchk ) then |
| 184 |
|
|
|
| 185 |
|
|
do icomp = nbeg, nend, nstep |
| 186 |
|
|
|
| 187 |
|
|
ichknum = (icomp - nbeg)/nstep + 1 |
| 188 |
|
|
|
| 189 |
|
|
if (ichknum .le. maxgrdchecks ) then |
| 190 |
|
|
|
| 191 |
|
|
c-- Determine the location of icomp on the grid. |
| 192 |
|
|
call grdchk_loc( icomp, ichknum, |
| 193 |
|
|
& icvrec, itile, jtile, layer, |
| 194 |
|
|
& itilepos, jtilepos, itest, ierr, |
| 195 |
|
|
& mythid ) |
| 196 |
|
|
|
| 197 |
|
|
if ( ierr .eq. 0 ) then |
| 198 |
|
|
|
| 199 |
heimbach |
1.3.6.1 |
c-- positive perturbation |
| 200 |
|
|
grdchk_eps = abs(grdchk_eps) |
| 201 |
|
|
|
| 202 |
|
|
c-- get gradient component calculated via adjoint |
| 203 |
|
|
call grdchk_getadxx( icvrec, |
| 204 |
|
|
& itile, jtile, layer, |
| 205 |
|
|
& itilepos, jtilepos, |
| 206 |
|
|
& adxxmemo, mythid ) |
| 207 |
|
|
_BARRIER |
| 208 |
|
|
|
| 209 |
heimbach |
1.2 |
c-- get control vector component from file |
| 210 |
|
|
c-- perturb it and write back to file |
| 211 |
|
|
call grdchk_getxx( icvrec, |
| 212 |
|
|
& itile, jtile, layer, |
| 213 |
|
|
& itilepos, jtilepos, |
| 214 |
|
|
& xxmemo_ref, xxmemo_pert, mythid ) |
| 215 |
|
|
_BARRIER |
| 216 |
|
|
|
| 217 |
heimbach |
1.3.6.1 |
c-- forward run with perturbed control vector |
| 218 |
|
|
mytime = starttime |
| 219 |
|
|
myiter = niter0 |
| 220 |
|
|
call the_main_loop( mytime, myiter, mythid ) |
| 221 |
|
|
fcpertplus = fc |
| 222 |
|
|
|
| 223 |
|
|
c-- Reset control vector. |
| 224 |
|
|
call grdchk_setxx( icvrec, |
| 225 |
heimbach |
1.2 |
& itile, jtile, layer, |
| 226 |
|
|
& itilepos, jtilepos, |
| 227 |
heimbach |
1.3.6.1 |
& xxmemo_ref, mythid ) |
| 228 |
heimbach |
1.2 |
_BARRIER |
| 229 |
|
|
|
| 230 |
heimbach |
1.3.6.1 |
fcpertminus = fcref |
| 231 |
|
|
|
| 232 |
|
|
if ( useCentralDiff ) then |
| 233 |
|
|
|
| 234 |
|
|
c-- repeat the proceedure for a negative perturbation |
| 235 |
|
|
grdchk_eps = - abs(grdchk_eps) |
| 236 |
|
|
|
| 237 |
|
|
c-- get control vector component from file |
| 238 |
|
|
c-- perturb it and write back to file |
| 239 |
|
|
call grdchk_getxx( icvrec, |
| 240 |
|
|
& itile, jtile, layer, |
| 241 |
|
|
& itilepos, jtilepos, |
| 242 |
|
|
& xxmemo_ref, xxmemo_pert, mythid ) |
| 243 |
|
|
_BARRIER |
| 244 |
|
|
|
| 245 |
heimbach |
1.2 |
c-- forward run with perturbed control vector |
| 246 |
heimbach |
1.3.6.1 |
mytime = starttime |
| 247 |
|
|
myiter = niter0 |
| 248 |
|
|
call the_main_loop( mytime, myiter, mythid ) |
| 249 |
|
|
fcpertminus = fc |
| 250 |
heimbach |
1.2 |
|
| 251 |
heimbach |
1.3.6.1 |
c-- Reset control vector. |
| 252 |
|
|
call grdchk_setxx( icvrec, |
| 253 |
|
|
& itile, jtile, layer, |
| 254 |
|
|
& itilepos, jtilepos, |
| 255 |
|
|
& xxmemo_ref, mythid ) |
| 256 |
|
|
_BARRIER |
| 257 |
|
|
|
| 258 |
|
|
c reset grdchk_eps to a positive value |
| 259 |
|
|
grdchk_eps = abs(grdchk_eps) |
| 260 |
|
|
|
| 261 |
|
|
end if |
| 262 |
|
|
c-- |
| 263 |
heimbach |
1.2 |
if ( grdchk_eps .eq. 0. ) then |
| 264 |
heimbach |
1.3.6.1 |
gfd = (fcpertplus-fcpertminus) |
| 265 |
heimbach |
1.2 |
else |
| 266 |
heimbach |
1.3.6.1 |
gfd = (fcpertplus-fcpertminus) |
| 267 |
|
|
& /(grdchk_epsfac*grdchk_eps) |
| 268 |
heimbach |
1.2 |
endif |
| 269 |
|
|
|
| 270 |
heimbach |
1.3.6.1 |
if ( adxxmemo .eq. 0. ) then |
| 271 |
heimbach |
1.2 |
ratio = abs( adxxmemo - gfd ) |
| 272 |
|
|
else |
| 273 |
heimbach |
1.3.6.1 |
ratio = 1. - gfd/adxxmemo |
| 274 |
heimbach |
1.2 |
endif |
| 275 |
|
|
|
| 276 |
|
|
cph( |
| 277 |
|
|
tmpplot1(itilepos,jtilepos,layer,itile,jtile) = |
| 278 |
|
|
& gfd |
| 279 |
|
|
tmpplot2(itilepos,jtilepos,layer,itile,jtile) = |
| 280 |
|
|
& ratio |
| 281 |
|
|
cph) |
| 282 |
|
|
|
| 283 |
|
|
|
| 284 |
heimbach |
1.3.6.1 |
fcrmem ( ichknum ) = fcref |
| 285 |
|
|
fcppmem ( ichknum ) = fcpertplus |
| 286 |
|
|
fcpmmem ( ichknum ) = fcpertminus |
| 287 |
heimbach |
1.2 |
xxmemref ( ichknum ) = xxmemo_ref |
| 288 |
|
|
xxmempert ( ichknum ) = xxmemo_pert |
| 289 |
|
|
gfdmem ( ichknum ) = gfd |
| 290 |
|
|
adxxmem ( ichknum ) = adxxmemo |
| 291 |
|
|
ratiomem ( ichknum ) = ratio |
| 292 |
|
|
|
| 293 |
|
|
irecmem ( ichknum ) = icvrec |
| 294 |
|
|
bimem ( ichknum ) = itile |
| 295 |
|
|
bjmem ( ichknum ) = jtile |
| 296 |
|
|
ilocmem ( ichknum ) = itilepos |
| 297 |
|
|
jlocmem ( ichknum ) = jtilepos |
| 298 |
|
|
klocmem ( ichknum ) = layer |
| 299 |
|
|
icompmem ( ichknum ) = icomp |
| 300 |
|
|
ichkmem ( ichknum ) = ichknum |
| 301 |
|
|
itestmem ( ichknum ) = itest |
| 302 |
|
|
ierrmem ( ichknum ) = ierr |
| 303 |
|
|
|
| 304 |
|
|
cph( |
| 305 |
|
|
print *, 'ph-grd 3 -------------------------------' |
| 306 |
heimbach |
1.3.6.2 |
print '(a,5I5,2x,3(1x,E15.9))', ' ph-grd 3 ', |
| 307 |
|
|
& myprocid,ichknum,itilepos,jtilepos,layer, |
| 308 |
heimbach |
1.3.6.1 |
& fcref, fcpertplus, fcpertminus |
| 309 |
heimbach |
1.3.6.2 |
print '(a,5I5,2x,3(1x,E15.9))', ' ph-grd 3 ', |
| 310 |
|
|
& myprocid,ichknum,ichkmem(ichknum), |
| 311 |
heimbach |
1.2 |
& icompmem(ichknum),itestmem(ichknum), |
| 312 |
|
|
& adxxmemo, gfd, ratio |
| 313 |
|
|
cph) |
| 314 |
|
|
else |
| 315 |
|
|
c |
| 316 |
heimbach |
1.3.6.1 |
print *, 'ph-grd 3 -------------------------------' |
| 317 |
|
|
print *, 'ph-grd 3 : ierr = ', ierr, |
| 318 |
|
|
& ', icomp = ', icomp |
| 319 |
heimbach |
1.2 |
endif |
| 320 |
|
|
else |
| 321 |
|
|
ierr_grdchk = -1 |
| 322 |
|
|
endif |
| 323 |
|
|
|
| 324 |
|
|
enddo |
| 325 |
|
|
endif |
| 326 |
|
|
|
| 327 |
|
|
c-- Everyone has to wait for the component to be reset. |
| 328 |
|
|
_BARRIER |
| 329 |
|
|
|
| 330 |
|
|
enddo |
| 331 |
|
|
|
| 332 |
|
|
cph( |
| 333 |
|
|
CALL WRITE_REC_XYZ_RL( 'grd_findiff' , tmpplot1, 1, 0, myThid) |
| 334 |
|
|
CALL WRITE_REC_XYZ_RL( 'grd_ratio' , tmpplot2, 1, 0, myThid) |
| 335 |
|
|
cph) |
| 336 |
|
|
|
| 337 |
|
|
c-- Print the results of the gradient check. |
| 338 |
|
|
call grdchk_print( ichknum, ierr_grdchk, mythid ) |
| 339 |
|
|
|
| 340 |
|
|
#endif /* ALLOW_GRADIENT_CHECK */ |
| 341 |
|
|
|
| 342 |
|
|
end |
Parent Directory
| 
Revision Log
| 
Revision Graph