1 |
edhill |
1.10 |
C |
2 |
heimbach |
1.16 |
C $Header: /u/gcmpack/MITgcm/pkg/grdchk/grdchk_main.F,v 1.15 2004/10/26 20:10:25 heimbach Exp $ |
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heimbach |
1.11 |
C $Name: $ |
4 |
heimbach |
1.2 |
|
5 |
edhill |
1.10 |
#include "AD_CONFIG.h" |
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heimbach |
1.2 |
#include "CPP_OPTIONS.h" |
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heimbach |
1.3 |
CBOI |
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C |
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C !TITLE: GRADIENT CHECK |
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C !AUTHORS: mitgcm developers ( support@mitgcm.org ) |
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C !AFFILIATION: Massachussetts Institute of Technology |
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C !DATE: |
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C !INTRODUCTION: gradient check package |
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c \bv |
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c Compare the gradients calculated by the adjoint model with |
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c finite difference approximations. |
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c |
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C !CALLING SEQUENCE: |
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c |
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c the_model_main |
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c | |
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c |-- ctrl_unpack |
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c |-- adthe_main_loop - unperturbed cost function and |
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c |-- ctrl_pack adjoint gradient are computed here |
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c | |
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c |-- grdchk_main |
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c | |
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c |-- grdchk_init |
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c |-- do icomp=... - loop over control vector elements |
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c | |
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c |-- grdchk_loc - determine location of icomp on grid |
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c | |
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c |-- grdchk_getxx - get control vector component from file |
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c | perturb it and write back to file |
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c |-- grdchk_getadxx - get gradient component calculated |
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c | via adjoint |
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c |-- the_main_loop - forward run and cost evaluation |
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c | with perturbed control vector element |
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c |-- calculate ratio of adj. vs. finite difference gradient |
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c | |
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c |-- grdchk_setxx - Reset control vector element |
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c | |
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c |-- grdchk_print - print results |
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c \ev |
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CEOI |
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CBOP |
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C !ROUTINE: grdchk_main |
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C !INTERFACE: |
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subroutine grdchk_main( mythid ) |
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heimbach |
1.2 |
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heimbach |
1.3 |
C !DESCRIPTION: \bv |
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heimbach |
1.2 |
c ================================================================== |
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c SUBROUTINE grdchk_main |
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c ================================================================== |
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c o Compare the gradients calculated by the adjoint model with |
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c finite difference approximations. |
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c started: Christian Eckert eckert@mit.edu 24-Feb-2000 |
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heimbach |
1.4 |
c continued&finished: heimbach@mit.edu: 13-Jun-2001 |
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c changed: mlosch@ocean.mit.edu: 09-May-2002 |
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c - added centered difference vs. 1-sided difference option |
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c - improved output format for readability |
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c - added control variable hFacC |
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heimbach |
1.7 |
c heimbach@mit.edu 24-Feb-2003 |
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c - added tangent linear gradient checks |
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c - fixes for multiproc. gradient checks |
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c - added more control variables |
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heimbach |
1.4 |
c |
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heimbach |
1.2 |
c ================================================================== |
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c SUBROUTINE grdchk_main |
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c ================================================================== |
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heimbach |
1.3 |
C \ev |
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heimbach |
1.2 |
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heimbach |
1.3 |
C !USES: |
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heimbach |
1.2 |
implicit none |
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c == global variables == |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "grdchk.h" |
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#include "cost.h" |
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heimbach |
1.9 |
#ifdef ALLOW_TANGENTLINEAR_RUN |
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#include "g_cost.h" |
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#endif |
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heimbach |
1.2 |
|
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heimbach |
1.3 |
C !INPUT/OUTPUT PARAMETERS: |
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heimbach |
1.2 |
c == routine arguments == |
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integer mythid |
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heimbach |
1.11 |
#ifdef ALLOW_GRDCHK |
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heimbach |
1.3 |
C !LOCAL VARIABLES: |
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heimbach |
1.2 |
c == local variables == |
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integer myiter |
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_RL mytime |
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integer bi, itlo, ithi |
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integer bj, jtlo, jthi |
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integer i, imin, imax |
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integer j, jmin, jmax |
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integer k |
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integer icomp |
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integer ichknum |
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integer icvrec |
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integer jtile |
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integer itile |
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integer layer |
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heimbach |
1.8 |
integer obcspos |
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heimbach |
1.2 |
integer itilepos |
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integer jtilepos |
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integer itest |
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integer ierr |
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integer ierr_grdchk |
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_RL gfd |
116 |
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_RL fcref |
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heimbach |
1.4 |
_RL fcpertplus, fcpertminus |
118 |
heimbach |
1.6 |
_RL ratio_ad |
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_RL ratio_ftl |
120 |
heimbach |
1.2 |
_RL xxmemo_ref |
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_RL xxmemo_pert |
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_RL adxxmemo |
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heimbach |
1.6 |
_RL ftlxxmemo |
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_RL localEps |
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_RL grdchk_epsfac |
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heimbach |
1.7 |
_RL tmpplot1(1-olx:snx+olx,1-oly:sny+oly,nr,nsx,nsy) |
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_RL tmpplot2(1-olx:snx+olx,1-oly:sny+oly,nr,nsx,nsy) |
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_RL tmpplot3(1-olx:snx+olx,1-oly:sny+oly,nr,nsx,nsy) |
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131 |
heimbach |
1.12 |
CHARACTER*(MAX_LEN_MBUF) msgBuf |
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heimbach |
1.2 |
c == end of interface == |
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heimbach |
1.3 |
CEOP |
135 |
heimbach |
1.2 |
|
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c-- Set the loop ranges. |
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jtlo = mybylo(mythid) |
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jthi = mybyhi(mythid) |
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itlo = mybxlo(mythid) |
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ithi = mybxhi(mythid) |
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jmin = 1 |
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jmax = sny |
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imin = 1 |
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imax = snx |
145 |
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146 |
heimbach |
1.16 |
print *, 'ph-check entering grdchk_main ' |
147 |
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148 |
heimbach |
1.2 |
c-- initialise variables |
149 |
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call grdchk_init( mythid ) |
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c-- Compute the adjoint models' gradients. |
152 |
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c-- Compute the unperturbed cost function. |
153 |
heimbach |
1.7 |
cph Gradient via adjoint has already been computed, |
154 |
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cph and so has unperturbed cost function, |
155 |
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cph assuming all xx_ fields are initialised to zero. |
156 |
heimbach |
1.2 |
|
157 |
heimbach |
1.9 |
ierr_grdchk = 0 |
158 |
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cphadmtlm( |
159 |
heimbach |
1.2 |
fcref = fc |
160 |
heimbach |
1.15 |
cphadmtlm fcref = objf_state_final(45,4,1,1,1) |
161 |
heimbach |
1.9 |
cphadmtlm) |
162 |
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163 |
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print *, 'ph-check fcref = ', fcref |
164 |
heimbach |
1.2 |
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165 |
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do bj = jtlo, jthi |
166 |
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do bi = itlo, ithi |
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do k = 1, nr |
168 |
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do j = jmin, jmax |
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do i = imin, imax |
170 |
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tmpplot1(i,j,k,bi,bj) = 0. _d 0 |
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tmpplot2(i,j,k,bi,bj) = 0. _d 0 |
172 |
heimbach |
1.6 |
tmpplot3(i,j,k,bi,bj) = 0. _d 0 |
173 |
heimbach |
1.2 |
end do |
174 |
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end do |
175 |
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end do |
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end do |
177 |
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end do |
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179 |
heimbach |
1.4 |
if ( useCentralDiff ) then |
180 |
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grdchk_epsfac = 2. _d 0 |
181 |
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else |
182 |
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grdchk_epsfac = 1. _d 0 |
183 |
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end if |
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heimbach |
1.12 |
print *, 'grad-res -------------------------------' |
186 |
heimbach |
1.7 |
print ('(2a)'), |
187 |
heimbach |
1.12 |
& ' grad-res proc # i j k fc ref', |
188 |
heimbach |
1.7 |
& ' fc + eps fc - eps' |
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#ifdef ALLOW_TANGENTLINEAR_RUN |
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print ('(2a)'), |
191 |
heimbach |
1.12 |
& ' grad-res proc # i j k tlm grad', |
192 |
heimbach |
1.7 |
& ' fd grad 1 - fd/tlm' |
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#else |
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print ('(2a)'), |
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heimbach |
1.12 |
& ' grad-res proc # i j k adj grad', |
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heimbach |
1.7 |
& ' fd grad 1 - fd/adj' |
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#endif |
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199 |
heimbach |
1.2 |
c-- Compute the finite difference approximations. |
200 |
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c-- Cycle through all processes doing NINT(nend-nbeg+1)/nstep |
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c-- gradient checks. |
202 |
heimbach |
1.14 |
|
203 |
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if ( nbeg .EQ. 0 ) call grdchk_get_position( mythid ) |
204 |
heimbach |
1.2 |
|
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heimbach |
1.7 |
do icomp = nbeg, nend, nstep |
206 |
heimbach |
1.2 |
|
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heimbach |
1.7 |
ichknum = (icomp - nbeg)/nstep + 1 |
208 |
heimbach |
1.2 |
|
209 |
heimbach |
1.7 |
if (ichknum .le. maxgrdchecks ) then |
210 |
heimbach |
1.2 |
|
211 |
heimbach |
1.7 |
c-- Determine the location of icomp on the grid. |
212 |
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if ( myProcId .EQ. grdchkwhichproc ) then |
213 |
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call grdchk_loc( icomp, ichknum, |
214 |
heimbach |
1.8 |
& icvrec, itile, jtile, layer, obcspos, |
215 |
heimbach |
1.7 |
& itilepos, jtilepos, itest, ierr, |
216 |
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& mythid ) |
217 |
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endif |
218 |
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_BARRIER |
219 |
heimbach |
1.2 |
|
220 |
heimbach |
1.6 |
c****************************************************** |
221 |
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c-- (A): get gradient component calculated via adjoint |
222 |
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c****************************************************** |
223 |
heimbach |
1.7 |
|
224 |
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c-- get gradient component calculated via adjoint |
225 |
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if ( myProcId .EQ. grdchkwhichproc .AND. |
226 |
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& ierr .EQ. 0 ) then |
227 |
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call grdchk_getadxx( icvrec, |
228 |
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& itile, jtile, layer, |
229 |
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& itilepos, jtilepos, |
230 |
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& adxxmemo, mythid ) |
231 |
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endif |
232 |
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_BARRIER |
233 |
heimbach |
1.4 |
|
234 |
heimbach |
1.6 |
#ifdef ALLOW_TANGENTLINEAR_RUN |
235 |
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c****************************************************** |
236 |
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c-- (B): Get gradient component g_fc from tangent linear run: |
237 |
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c****************************************************** |
238 |
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c-- |
239 |
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c-- 1. perturb control vector component: xx(i)=1. |
240 |
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241 |
heimbach |
1.7 |
if ( myProcId .EQ. grdchkwhichproc .AND. |
242 |
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& ierr .EQ. 0 ) then |
243 |
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localEps = 1. _d 0 |
244 |
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call grdchk_getxx( icvrec, TANGENT_SIMULATION, |
245 |
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& itile, jtile, layer, |
246 |
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& itilepos, jtilepos, |
247 |
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& xxmemo_ref, xxmemo_pert, localEps, |
248 |
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& mythid ) |
249 |
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endif |
250 |
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_BARRIER |
251 |
heimbach |
1.6 |
|
252 |
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c-- |
253 |
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c-- 2. perform tangent linear run |
254 |
heimbach |
1.7 |
mytime = starttime |
255 |
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myiter = niter0 |
256 |
heimbach |
1.9 |
cphadmtlm( |
257 |
heimbach |
1.7 |
g_fc = 0. |
258 |
heimbach |
1.9 |
cphadmtlm do j=1,sny |
259 |
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cphadmtlm do i=1,snx |
260 |
heimbach |
1.15 |
cphadmtlm g_objf_state_final(i,j,1,1,1) = 0. |
261 |
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cphadmtlm g_objf_state_final(i,j,1,1,2) = 0. |
262 |
heimbach |
1.9 |
cphadmtlm enddo |
263 |
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cphadmtlm enddo |
264 |
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cphadmtlm) |
265 |
heimbach |
1.7 |
call g_the_main_loop( mytime, myiter, mythid ) |
266 |
heimbach |
1.9 |
cphadmtlm( |
267 |
heimbach |
1.7 |
ftlxxmemo = g_fc |
268 |
heimbach |
1.15 |
cphadmtlm ftlxxmemo = g_objf_state_final(45,4,1,1,1) |
269 |
heimbach |
1.9 |
cphadmtlm) |
270 |
heimbach |
1.7 |
_BARRIER |
271 |
heimbach |
1.6 |
c-- |
272 |
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c-- 3. reset control vector |
273 |
heimbach |
1.7 |
if ( myProcId .EQ. grdchkwhichproc .AND. |
274 |
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& ierr .EQ. 0 ) then |
275 |
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call grdchk_setxx( icvrec, TANGENT_SIMULATION, |
276 |
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& itile, jtile, layer, |
277 |
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& itilepos, jtilepos, |
278 |
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& xxmemo_ref, mythid ) |
279 |
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endif |
280 |
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_BARRIER |
281 |
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282 |
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#endif /* ALLOW_TANGENTLINEAR_RUN */ |
283 |
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284 |
heimbach |
1.6 |
|
285 |
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c****************************************************** |
286 |
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c-- (C): Get gradient via finite difference perturbation |
287 |
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c****************************************************** |
288 |
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|
289 |
heimbach |
1.2 |
c-- get control vector component from file |
290 |
heimbach |
1.7 |
c-- perturb it and write back to file |
291 |
heimbach |
1.6 |
c-- positive perturbation |
292 |
heimbach |
1.7 |
localEps = abs(grdchk_eps) |
293 |
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if ( myProcId .EQ. grdchkwhichproc .AND. |
294 |
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& ierr .EQ. 0 ) then |
295 |
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call grdchk_getxx( icvrec, FORWARD_SIMULATION, |
296 |
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& itile, jtile, layer, |
297 |
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& itilepos, jtilepos, |
298 |
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& xxmemo_ref, xxmemo_pert, localEps, |
299 |
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& mythid ) |
300 |
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endif |
301 |
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_BARRIER |
302 |
heimbach |
1.2 |
|
303 |
heimbach |
1.4 |
c-- forward run with perturbed control vector |
304 |
heimbach |
1.7 |
mytime = starttime |
305 |
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myiter = niter0 |
306 |
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call the_main_loop( mytime, myiter, mythid ) |
307 |
heimbach |
1.9 |
cphadmtlm( |
308 |
heimbach |
1.7 |
fcpertplus = fc |
309 |
heimbach |
1.15 |
cphadmtlm fcpertplus = objf_state_final(45,4,1,1,1) |
310 |
heimbach |
1.9 |
cphadmtlm) |
311 |
heimbach |
1.13 |
print *, 'ph-check fcpertplus = ', fcpertplus |
312 |
heimbach |
1.7 |
_BARRIER |
313 |
heimbach |
1.4 |
|
314 |
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c-- Reset control vector. |
315 |
heimbach |
1.7 |
if ( myProcId .EQ. grdchkwhichproc .AND. |
316 |
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& ierr .EQ. 0 ) then |
317 |
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call grdchk_setxx( icvrec, FORWARD_SIMULATION, |
318 |
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& itile, jtile, layer, |
319 |
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& itilepos, jtilepos, |
320 |
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& xxmemo_ref, mythid ) |
321 |
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endif |
322 |
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_BARRIER |
323 |
heimbach |
1.2 |
|
324 |
heimbach |
1.7 |
fcpertminus = fcref |
325 |
heimbach |
1.13 |
print *, 'ph-check fcpertminus = ', fcpertminus |
326 |
heimbach |
1.4 |
|
327 |
heimbach |
1.7 |
if ( useCentralDiff ) then |
328 |
heimbach |
1.4 |
|
329 |
heimbach |
1.6 |
c-- get control vector component from file |
330 |
heimbach |
1.7 |
c-- perturb it and write back to file |
331 |
heimbach |
1.4 |
c-- repeat the proceedure for a negative perturbation |
332 |
heimbach |
1.7 |
if ( myProcId .EQ. grdchkwhichproc .AND. |
333 |
|
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& ierr .EQ. 0 ) then |
334 |
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localEps = - abs(grdchk_eps) |
335 |
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call grdchk_getxx( icvrec, FORWARD_SIMULATION, |
336 |
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& itile, jtile, layer, |
337 |
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& itilepos, jtilepos, |
338 |
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& xxmemo_ref, xxmemo_pert, localEps, |
339 |
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& mythid ) |
340 |
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endif |
341 |
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_BARRIER |
342 |
heimbach |
1.4 |
|
343 |
heimbach |
1.2 |
c-- forward run with perturbed control vector |
344 |
heimbach |
1.7 |
mytime = starttime |
345 |
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myiter = niter0 |
346 |
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call the_main_loop( mytime, myiter, mythid ) |
347 |
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_BARRIER |
348 |
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fcpertminus = fc |
349 |
heimbach |
1.2 |
|
350 |
heimbach |
1.4 |
c-- Reset control vector. |
351 |
heimbach |
1.7 |
if ( myProcId .EQ. grdchkwhichproc .AND. |
352 |
|
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& ierr .EQ. 0 ) then |
353 |
|
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call grdchk_setxx( icvrec, FORWARD_SIMULATION, |
354 |
|
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& itile, jtile, layer, |
355 |
|
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& itilepos, jtilepos, |
356 |
|
|
& xxmemo_ref, mythid ) |
357 |
|
|
endif |
358 |
|
|
_BARRIER |
359 |
|
|
|
360 |
|
|
c-- end of if useCentralDiff ... |
361 |
|
|
end if |
362 |
heimbach |
1.4 |
|
363 |
heimbach |
1.6 |
c****************************************************** |
364 |
|
|
c-- (D): calculate relative differences between gradients |
365 |
|
|
c****************************************************** |
366 |
|
|
|
367 |
heimbach |
1.7 |
if ( myProcId .EQ. grdchkwhichproc .AND. |
368 |
|
|
& ierr .EQ. 0 ) then |
369 |
heimbach |
1.2 |
|
370 |
heimbach |
1.7 |
if ( grdchk_eps .eq. 0. ) then |
371 |
|
|
gfd = (fcpertplus-fcpertminus) |
372 |
|
|
else |
373 |
|
|
gfd = (fcpertplus-fcpertminus) |
374 |
|
|
& /(grdchk_epsfac*grdchk_eps) |
375 |
|
|
endif |
376 |
heimbach |
1.2 |
|
377 |
heimbach |
1.7 |
if ( adxxmemo .eq. 0. ) then |
378 |
|
|
ratio_ad = abs( adxxmemo - gfd ) |
379 |
|
|
else |
380 |
|
|
ratio_ad = 1. - gfd/adxxmemo |
381 |
|
|
endif |
382 |
|
|
|
383 |
|
|
if ( ftlxxmemo .eq. 0. ) then |
384 |
|
|
ratio_ftl = abs( ftlxxmemo - gfd ) |
385 |
heimbach |
1.2 |
else |
386 |
heimbach |
1.7 |
ratio_ftl = 1. - gfd/ftlxxmemo |
387 |
heimbach |
1.2 |
endif |
388 |
heimbach |
1.7 |
|
389 |
|
|
tmpplot1(itilepos,jtilepos,layer,itile,jtile) |
390 |
|
|
& = gfd |
391 |
|
|
tmpplot2(itilepos,jtilepos,layer,itile,jtile) |
392 |
|
|
& = ratio_ad |
393 |
|
|
tmpplot3(itilepos,jtilepos,layer,itile,jtile) |
394 |
|
|
& = ratio_ftl |
395 |
|
|
|
396 |
|
|
fcrmem ( ichknum ) = fcref |
397 |
|
|
fcppmem ( ichknum ) = fcpertplus |
398 |
|
|
fcpmmem ( ichknum ) = fcpertminus |
399 |
|
|
xxmemref ( ichknum ) = xxmemo_ref |
400 |
|
|
xxmempert ( ichknum ) = xxmemo_pert |
401 |
|
|
gfdmem ( ichknum ) = gfd |
402 |
|
|
adxxmem ( ichknum ) = adxxmemo |
403 |
|
|
ftlxxmem ( ichknum ) = ftlxxmemo |
404 |
|
|
ratioadmem ( ichknum ) = ratio_ad |
405 |
|
|
ratioftlmem ( ichknum ) = ratio_ftl |
406 |
|
|
|
407 |
|
|
irecmem ( ichknum ) = icvrec |
408 |
|
|
bimem ( ichknum ) = itile |
409 |
|
|
bjmem ( ichknum ) = jtile |
410 |
|
|
ilocmem ( ichknum ) = itilepos |
411 |
|
|
jlocmem ( ichknum ) = jtilepos |
412 |
|
|
klocmem ( ichknum ) = layer |
413 |
heimbach |
1.8 |
iobcsmem ( ichknum ) = obcspos |
414 |
heimbach |
1.7 |
icompmem ( ichknum ) = icomp |
415 |
|
|
ichkmem ( ichknum ) = ichknum |
416 |
|
|
itestmem ( ichknum ) = itest |
417 |
|
|
ierrmem ( ichknum ) = ierr |
418 |
|
|
|
419 |
heimbach |
1.12 |
print *, 'grad-res -------------------------------' |
420 |
|
|
print '(a,5I5,2x,3(1x,E15.9))', ' grad-res ', |
421 |
heimbach |
1.7 |
& myprocid,ichknum,itilepos,jtilepos,layer, |
422 |
|
|
& fcref, fcpertplus, fcpertminus |
423 |
|
|
#ifdef ALLOW_TANGENTLINEAR_RUN |
424 |
heimbach |
1.12 |
print '(a,5I5,2x,3(1x,E15.9))', ' grad-res ', |
425 |
heimbach |
1.7 |
& myprocid,ichknum,ichkmem(ichknum), |
426 |
|
|
& icompmem(ichknum),itestmem(ichknum), |
427 |
|
|
& ftlxxmemo, gfd, ratio_ftl |
428 |
heimbach |
1.12 |
WRITE(msgBuf,'(A34,2(1PE24.14,X))') |
429 |
|
|
& 'precision_grdchk_result TLM ', fcref, ftlxxmemo |
430 |
|
|
CALL PRINT_MESSAGE |
431 |
|
|
& (msgBuf,standardMessageUnit,SQUEEZE_RIGHT,1) |
432 |
heimbach |
1.7 |
#else |
433 |
heimbach |
1.12 |
print '(a,5I5,2x,3(1x,E15.9))', ' grad-res ', |
434 |
heimbach |
1.7 |
& myprocid,ichknum,ichkmem(ichknum), |
435 |
|
|
& icompmem(ichknum),itestmem(ichknum), |
436 |
|
|
& adxxmemo, gfd, ratio_ad |
437 |
heimbach |
1.12 |
WRITE(msgBuf,'(A34,2(1PE24.14,X))') |
438 |
|
|
& 'precision_grdchk_result ADM ', fcref, adxxmemo |
439 |
|
|
CALL PRINT_MESSAGE |
440 |
|
|
& (msgBuf,standardMessageUnit,SQUEEZE_RIGHT,1) |
441 |
heimbach |
1.7 |
#endif |
442 |
|
|
|
443 |
|
|
endif |
444 |
|
|
|
445 |
|
|
print *, 'ph-grd ierr ---------------------------' |
446 |
|
|
print *, 'ph-grd ierr = ', ierr, ', icomp = ', icomp, |
447 |
|
|
& ', ichknum = ', ichknum |
448 |
|
|
|
449 |
|
|
_BARRIER |
450 |
|
|
|
451 |
|
|
c-- else of if ( ichknum ... |
452 |
|
|
else |
453 |
|
|
ierr_grdchk = -1 |
454 |
|
|
|
455 |
|
|
c-- end of if ( ichknum ... |
456 |
heimbach |
1.2 |
endif |
457 |
|
|
|
458 |
heimbach |
1.7 |
c-- end of do icomp = ... |
459 |
|
|
enddo |
460 |
heimbach |
1.2 |
|
461 |
heimbach |
1.7 |
if ( myProcId .EQ. grdchkwhichproc ) then |
462 |
|
|
CALL WRITE_REC_XYZ_RL( |
463 |
|
|
& 'grd_findiff' , tmpplot1, 1, 0, myThid) |
464 |
|
|
CALL WRITE_REC_XYZ_RL( |
465 |
|
|
& 'grd_ratio_ad' , tmpplot2, 1, 0, myThid) |
466 |
|
|
CALL WRITE_REC_XYZ_RL( |
467 |
|
|
& 'grd_ratio_ftl' , tmpplot3, 1, 0, myThid) |
468 |
|
|
endif |
469 |
heimbach |
1.2 |
|
470 |
heimbach |
1.7 |
c-- Everyone has to wait for the component to be reset. |
471 |
|
|
_BARRIER |
472 |
heimbach |
1.2 |
|
473 |
|
|
c-- Print the results of the gradient check. |
474 |
|
|
call grdchk_print( ichknum, ierr_grdchk, mythid ) |
475 |
|
|
|
476 |
heimbach |
1.11 |
#endif /* ALLOW_GRDCHK */ |
477 |
heimbach |
1.2 |
|
478 |
|
|
end |