C $Header: /u/gcmpack/MITgcm/pkg/streamice/streamice_vel_solve.F,v 1.13 2016/10/20 15:22:53 dgoldberg Exp $
C $Name: $
#include "STREAMICE_OPTIONS.h"
#ifdef ALLOW_AUTODIFF
# include "AUTODIFF_OPTIONS.h"
#endif
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
CBOP
SUBROUTINE STREAMICE_VEL_SOLVE( myThid, maxNLIter, maxCGiter,
& myiter )
C /============================================================\
C | SUBROUTINE |
C | o |
C |============================================================|
C | |
C \============================================================/
IMPLICIT NONE
C === Global variables ===
#include "SIZE.h"
#include "EEPARAMS.h"
#include "PARAMS.h"
#include "STREAMICE.h"
#include "STREAMICE_CG.h"
#ifdef ALLOW_AUTODIFF_TAMC
# include "tamc.h"
#endif
C !INPUT/OUTPUT ARGUMENTS
INTEGER myThid
INTEGER maxNLIter
INTEGER maxCGIter
INTEGER myIter
#ifdef ALLOW_STREAMICE
C LOCAL VARIABLES
! real, dimension(:,:), pointer :: TAUDX, TAUDY, u_prev_iterate, v_prev_iterate, &
! u_bdry_cont, v_bdry_cont, Au, Av, err_u, err_v, &
! geolonq, geolatq, u_last, v_last, float_cond, H_node
! type(ocean_grid_type), pointer :: G
! integer :: conv_flag, i, j, k,l, iter, isym, &
! isdq, iedq, jsdq, jedq, isd, ied, jsd, jed, isumstart, jsumstart, nodefloat, nsub
! real :: err_max, err_tempu, err_tempv, err_init, area, max_vel, tempu, tempv, rhoi, rhow
INTEGER i, j, k, l, iter, cg_iters, bi, bj
INTEGER iter_numconv
INTEGER ikey_nl, myThidTemp
_RL err_max, err_tempu, err_tempv, err_init, area, err_max_fp
_RL max_vel, tempu, tempv, err_lastchange, cgtol
CHARACTER*(MAX_LEN_MBUF) msgBuf
LOGICAL CONVERGED
! _RL taudx (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
! _RL taudy (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
IF (STREAMICE_alt_driving_stress) THEN
CALL STREAMICE_DRIVING_STRESS_FD (myThid)
ELSEIF (STREAMICE_ppm_driving_stress) THEN
CALL STREAMICE_DRIVING_STRESS_PPM (myThid)
ELSE
CALL STREAMICE_DRIVING_STRESS (myThid)
ENDIF
#ifdef ALLOW_AUTODIFF_TAMC
#ifdef STREAMICE_STRESS_BOUNDARY_CONTROL
!$TAF STORE taudx_SI = comlev1, key=ikey_dynamics
!$TAF STORE taudy_SI = comlev1, key=ikey_dynamics
#endif
#endif
#ifdef STREAMICE_STRESS_BOUNDARY_CONTROL
_EXCH_XY_RL( taudx_SI , myThid )
_EXCH_XY_RL( taudy_SI , myThid )
CALL STREAMICE_FORCED_BUTTRESS (myThid)
#endif
CALL TIMER_START ('STREAMICE_VEL_SOLVE',myThid)
cgtol = streamice_cg_tol
CONVERGED = .false.
err_max = 0.
err_max_fp = 0.
_EXCH_XY_RL( taudx_SI , myThid )
_EXCH_XY_RL( taudy_SI , myThid )
DO bj = myByLo(myThid), myByHi(myThid)
DO bi = myBxLo(myThid), myBxHi(myThid)
DO j=1-OLy,sNy+OLy
DO i=1-OLx,sNx+OLx
u_old_SI (i,j,bi,bj) = U_streamice (i,j,bi,bj)
v_old_SI (i,j,bi,bj) = V_streamice (i,j,bi,bj)
ENDDO
ENDDO
ENDDO
ENDDO
#ifdef ALLOW_AUTODIFF_TAMC
!$TAF STORE U_streamice = comlev1, key=ikey_dynamics
!$TAF STORE V_streamice = comlev1, key=ikey_dynamics
#ifdef STREAMICE_HYBRID_STRESS
!$TAF STORE streamice_taubx = comlev1, key=ikey_dynamics
!$TAF STORE streamice_tauby = comlev1, key=ikey_dynamics
!$TAF STORE visc_streamice_full = comlev1, key=ikey_dynamics
#endif
#endif
#ifdef STREAMICE_HYBRID_STRESS
CALL STREAMICE_VISC_BETA_HYBRID ( myThid )
#else
CALL STREAMICE_VISC_BETA ( myThid )
#endif
#ifdef STREAMICE_HYBRID_STRESS
!$TAF STORE visc_streamice_full = comlev1, key=ikey_dynamics
#endif
_EXCH_XY_RL( tau_beta_eff_streamice , myThid )
_EXCH_XY_RL( visc_streamice , myThid )
! to stop ifort complaining
err_init = 0. _d 0
if (STREAMICE_chkresidconvergence .or.
& (streamice_maxnliter_cpl.eq.0 .and. myIter.eq.0)) then
CALL STREAMICE_GET_VEL_RESID_ERR ( err_init, myThid )
#ifdef ALLOW_AUTODIFF_TAMC
!$TAF STORE err_init = comlev1, key=ikey_dynamics
#endif
WRITE(msgBuf,'(A,E15.7)') 'initial nonlinear resid (error): ',
& err_init
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit,
& SQUEEZE_RIGHT , 1)
endif !STREAMICE_chkresidconvergence
iter_numconv = 0
err_max = err_init
err_max_fp = streamice_nonlin_tol_fp * 10.
err_lastchange = err_init
C START NL ITER. LOOP
C-------------------------------------------------------------------
DO iter=1,maxNLIter
C To avoid using "exit", loop goes through all iterations
C but after convergence loop does nothing
#ifdef ALLOW_AUTODIFF_TAMC
ikey_nl = (ikey_dynamics-1)*streamice_max_nl + iter
#endif
#ifdef ALLOW_AUTODIFF_TAMC
!$TAF STORE cgtol = comlev1_stream_nl, key=ikey_nl
!$TAF STORE err_max = comlev1_stream_nl, key=ikey_nl
!$TAF STORE err_max_fp = comlev1_stream_nl, key=ikey_nl
!$TAF STORE err_tempu = comlev1_stream_nl, key=ikey_nl
!$TAF STORE err_tempv = comlev1_stream_nl, key=ikey_nl
!$TAF STORE err_lastchange = comlev1_stream_nl, key=ikey_nl
!$TAF STORE ru_old_si = comlev1_stream_nl, key=ikey_nl
!$TAF STORE rv_old_si = comlev1_stream_nl, key=ikey_nl
!$TAF STORE u_old_si = comlev1_stream_nl, key=ikey_nl
!$TAF STORE v_old_si = comlev1_stream_nl, key=ikey_nl
!$TAF STORE streamice_cg_a1 = comlev1_stream_nl, key=ikey_nl
!$TAF STORE streamice_cg_a2 = comlev1_stream_nl, key=ikey_nl
!$TAF STORE streamice_cg_a3 = comlev1_stream_nl, key=ikey_nl
!$TAF STORE streamice_cg_a4 = comlev1_stream_nl, key=ikey_nl
!$TAF STORE U_streamice = comlev1_stream_nl, key=ikey_nl
!$TAF STORE V_streamice = comlev1_stream_nl, key=ikey_nl
!$TAF STORE tau_beta_eff_streamice = comlev1_stream_nl, key=ikey_nl
!$TAF STORE visc_streamice = comlev1_stream_nl, key=ikey_nl
!$TAF STORE zu_old_si = comlev1_stream_nl, key=ikey_nl
!$TAF STORE zv_old_si = comlev1_stream_nl, key=ikey_nl
#endif
! IF ((err_max .GT. streamice_nonlin_tol * err_init) .and.
! & (err_max_fp .GT. streamice_nonlin_tol_fp)) THEN
#ifdef ALLOW_AUTODIFF_TAMC
!$TAF STORE CONVERGED = comlev1_stream_nl, key=ikey_nl
#endif
IF (.not.CONVERGED) THEN
iter_numconv = iter_numconv + 1
#ifdef ALLOW_AUTODIFF_TAMC
!$TAF STORE cgtol = comlev1_stream_nl, key=ikey_nl
!$TAF STORE err_max = comlev1_stream_nl, key=ikey_nl
!$TAF STORE err_tempu = comlev1_stream_nl, key=ikey_nl
!$TAF STORE err_tempv = comlev1_stream_nl, key=ikey_nl
!$TAF STORE err_lastchange = comlev1_stream_nl, key=ikey_nl
!$TAF STORE ru_old_si = comlev1_stream_nl, key=ikey_nl
!$TAF STORE rv_old_si = comlev1_stream_nl, key=ikey_nl
!$TAF STORE streamice_cg_a1 = comlev1_stream_nl, key=ikey_nl
!$TAF STORE streamice_cg_a2 = comlev1_stream_nl, key=ikey_nl
!$TAF STORE streamice_cg_a3 = comlev1_stream_nl, key=ikey_nl
!$TAF STORE streamice_cg_a4 = comlev1_stream_nl, key=ikey_nl
!$TAF STORE U_streamice = comlev1_stream_nl, key=ikey_nl
!$TAF STORE V_streamice = comlev1_stream_nl, key=ikey_nl
!$TAF STORE tau_beta_eff_streamice = comlev1_stream_nl, key=ikey_nl
!$TAF STORE visc_streamice = comlev1_stream_nl, key=ikey_nl
!$TAF STORE zu_old_si = comlev1_stream_nl, key=ikey_nl
!$TAF STORE zv_old_si = comlev1_stream_nl, key=ikey_nl
#endif
CALL STREAMICE_CG_WRAPPER(
& U_streamice,
& V_streamice,
& taudx_SI,
& taudy_SI,
& cgtol,
& cg_iters,
& maxCGIter,
& myThid )
#ifdef STREAMICE_HYBRID_STRESS
#ifdef ALLOW_AUTODIFF_TAMC
!$TAF STORE U_streamice = comlev1_stream_nl, key=ikey_nl
!$TAF STORE V_streamice = comlev1_stream_nl, key=ikey_nl
#endif
#endif
#ifdef STREAMICE_HYBRID_STRESS
CALL STREAMICE_TAUB (myThid)
#endif
!-----------------------------------------------------------------------------
WRITE(msgBuf,'(A,I5,A,I4,A)') 'streamice linear solve number',
& iter, " ",
& cg_iters,
& ' iterations '
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit,
& SQUEEZE_RIGHT , 1)
!-----------------------------------------------------------------------------
#ifdef ALLOW_AUTODIFF_TAMC
!$TAF STORE U_streamice = comlev1_stream_nl, key=ikey_nl
!$TAF STORE V_streamice = comlev1_stream_nl, key=ikey_nl
#ifdef STREAMICE_HYBRID_STRESS
!$TAF STORE streamice_taubx = comlev1_stream_nl, key=ikey_nl
!$TAF STORE streamice_tauby = comlev1_stream_nl, key=ikey_nl
!$TAF STORE visc_streamice_full = comlev1_stream_nl, key=ikey_nl
#endif
#endif
#ifdef STREAMICE_HYBRID_STRESS
CALL STREAMICE_VISC_BETA_HYBRID ( myThid )
#else
CALL STREAMICE_VISC_BETA ( myThid )
#endif
_EXCH_XY_RL( tau_beta_eff_streamice , myThid )
_EXCH_XY_RL( visc_streamice , myThid )
!----------------------CONVERGENCE TESTS-------------------------------
if (STREAMICE_chkresidconvergence .or.
& (streamice_maxnliter_cpl.eq.0 .and. myIter.eq.0)) then
CALL STREAMICE_GET_VEL_RESID_ERR ( err_max, myThid )
WRITE(msgBuf,'(A,E15.7)') 'err/err_init',
& err_max/err_init
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit,
& SQUEEZE_RIGHT , 1)
IF (err_max .LE. streamice_nonlin_tol * err_init) THEN
CONVERGED = .true.
ENDIF
endif
if (STREAMICE_chkfixedptconvergence .or.
& (streamice_maxnliter_cpl.eq.0 .and. myIter.eq.0)) then
CALL STREAMICE_GET_VEL_FP_ERR ( err_max_fp, myThid )
DO bj = myByLo(myThid), myByHi(myThid)
DO bi = myBxLo(myThid), myBxHi(myThid)
DO j=1-OLy,sNy+OLy
DO i=1-OLx,sNx+OLx
u_old_SI (i,j,bi,bj) = U_streamice (i,j,bi,bj)
v_old_SI (i,j,bi,bj) = V_streamice (i,j,bi,bj)
ENDDO
ENDDO
ENDDO
ENDDO
WRITE(msgBuf,'(A,1PE22.14)') 'STREAMICE_FP_ERROR =',
& err_max_fp
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit,
& SQUEEZE_RIGHT , 1)
IF (err_max_fp .LE. streamice_nonlin_tol_fp) THEN
CONVERGED = .true.
ENDIF
endif
!----------------------END CONVERGENCE TESTS-------------------------------
IF (err_maxerr_lastchange*1.e-2 .and.
& STREAMICE_lower_cg_tol) THEN
cgtol = cgtol * 5.e-2
err_lastchange = err_max
WRITE(msgBuf,'(A,E15.7)') 'new cg tol: ',
& cgtol
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit,
& SQUEEZE_RIGHT , 1)
ENDIF
ENDIF ! (err_max .GT. streamice_nonlin_tol * err_init)
ENDDO
C END NL ITER. LOOP
C-------------------------------------------------------------------
if (iter_numconv .lt. maxnliter) then
WRITE(msgBuf,'(A,I5,A)') 'VELOCITY SOLVE CONVERGED, ',
& iter_numconv, ' iterations'
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit,
& SQUEEZE_RIGHT , 1)
else
WRITE(msgBuf,'(A,I5,A)') 'VELOCITY SOLVE NOT CONVERGED IN ',
& iter_numconv, ' iterations'
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit,
& SQUEEZE_RIGHT , 1)
endif
_EXCH_XY_RL(U_streamice, myThid)
_EXCH_XY_RL(V_streamice, myThid)
CALL TIMER_STOP ('STREAMICE_VEL_SOLVE',myThid)
#endif
RETURN
END