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C $Header: $ |
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C $Name: $ |
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|
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#include "SEAICE_OPTIONS.h" |
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#ifdef ALLOW_AUTODIFF |
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# include "AUTODIFF_OPTIONS.h" |
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#endif |
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|
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C-- File seaice_krylov.F: seaice krylov dynamical solver S/R: |
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|
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CBOP |
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C !ROUTINE: SEAICE_KRYLOV |
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C !INTERFACE: |
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SUBROUTINE SEAICE_KRYLOV( myTime, myIter, myThid ) |
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|
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C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | SUBROUTINE SEAICE_KRYLOV |
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C | o Picard solver for ice dynamics using a preconditioned |
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C | KRYLOV (Generalized Minimum RESidual=GMRES) method for |
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C | solving the linearised system following J.-F. Lemieux |
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C | et al., JGR 113, doi:10.1029/2007JC004680, 2008. |
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C *==========================================================* |
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C | written by Martin Losch, Jan 2016 |
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C *==========================================================* |
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C \ev |
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|
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C !USES: |
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IMPLICIT NONE |
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|
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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 "DYNVARS.h" |
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#include "GRID.h" |
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#include "SEAICE_SIZE.h" |
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#include "SEAICE_PARAMS.h" |
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#include "SEAICE.h" |
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|
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C !INPUT/OUTPUT PARAMETERS: |
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C === Routine arguments === |
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C myTime :: Simulation time |
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C myIter :: Simulation timestep number |
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C myThid :: my Thread Id. number |
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_RL myTime |
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INTEGER myIter |
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INTEGER myThid |
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|
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#ifdef SEAICE_ALLOW_KRYLOV |
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C !FUNCTIONS: |
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LOGICAL DIFFERENT_MULTIPLE |
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EXTERNAL DIFFERENT_MULTIPLE |
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|
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C !LOCAL VARIABLES: |
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C === Local variables === |
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C i,j,bi,bj :: loop indices |
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INTEGER i,j,bi,bj |
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C loop indices |
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INTEGER picardIter |
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INTEGER krylovIter, krylovFails |
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INTEGER krylovIterMax, picardIterMax |
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INTEGER totalKrylovItersLoc, totalPicardItersLoc |
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C FGMRES parameters |
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C im :: size of Krylov space |
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C ifgmres :: interation counter |
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INTEGER im |
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PARAMETER ( im = 50 ) |
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INTEGER ifgmres |
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C FGMRES flag that determines amount of output messages of fgmres |
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INTEGER iOutFGMRES |
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C FGMRES flag that indicates what fgmres wants us to do next |
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INTEGER iCode |
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_RL picardResidual |
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_RL picardResidualKm1 |
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C parameters to compute convergence criterion |
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_RL krylovLinTol |
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_RL FGMRESeps |
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_RL picardTol |
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C backward differences extrapolation factors |
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_RL bdfFac, bdfAlpha |
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C |
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_RL recip_deltaT |
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LOGICAL picardConverged, krylovConverged |
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LOGICAL writeNow |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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|
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_RL uIceLin(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RL vIceLin(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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C extra time level required for backward difference time stepping |
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_RL duIcNm1(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RL dvIcNm1(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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C u/vWork :: work arrays |
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_RL uWork (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RL vWork (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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C u/vIceLHS :: left hand side of momentum equation (A*x) |
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_RL uIceLHS(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RL vIceLHS(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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C u/vIceRHS :: right hand side of momentum equation (b) |
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_RL uIceRHS(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RL vIceRHS(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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C helper array |
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_RL resTmp (nVec,1,nSx,nSy) |
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C work arrays |
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_RL rhs(nVec,nSx,nSy), sol(nVec,nSx,nSy) |
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_RL vv(nVec,im+1,nSx,nSy), w(nVec,im,nSx,nSy) |
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_RL wk1(nVec,nSx,nSy), wk2(nVec,nSx,nSy) |
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CEOP |
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|
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C Initialise |
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picardIter = 0 |
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krylovFails = 0 |
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totalKrylovItersLoc = 0 |
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picardConverged = .FALSE. |
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picardTol = 0. _d 0 |
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picardResidual = 0. _d 0 |
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picardResidualKm1 = 0. _d 0 |
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FGMRESeps = 0. _d 0 |
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recip_deltaT = 1. _d 0 / SEAICE_deltaTdyn |
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|
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krylovIterMax = SEAICElinearIterMax |
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picardIterMax = SEAICEnonLinIterMax |
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IF ( SEAICEusePicardAsPrecon ) THEN |
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krylovIterMax = SEAICEpreconlinIter |
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picardIterMax = SEAICEpreconNL_Iter |
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ENDIF |
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|
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iOutFGMRES=0 |
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C with iOutFgmres=1, seaice_fgmres prints the residual at each iteration |
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IF ( debugLevel.GE.debLevC .AND. |
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& .NOT.SEAICEusePicardAsPrecon .AND. |
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& DIFFERENT_MULTIPLE( SEAICE_monFreq, myTime, deltaTClock ) ) |
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& iOutFGMRES=1 |
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|
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C backward difference extrapolation factors |
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bdfFac = 0. _d 0 |
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IF ( SEAICEuseBDF2 ) THEN |
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IF ( myIter.EQ.nIter0 .AND. SEAICEmomStartBDF.EQ.0 ) THEN |
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bdfFac = 0. _d 0 |
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ELSE |
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bdfFac = 0.5 _d 0 |
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ENDIF |
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ENDIF |
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bdfAlpha = 1. _d 0 + bdfFac |
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|
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO J=1-OLy,sNy+OLy |
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DO I=1-OLx,sNx+OLx |
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uIceLHS(I,J,bi,bj) = 0. _d 0 |
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vIceLHS(I,J,bi,bj) = 0. _d 0 |
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uIceRHS(I,J,bi,bj) = 0. _d 0 |
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vIceRHS(I,J,bi,bj) = 0. _d 0 |
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ENDDO |
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ENDDO |
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C cycle ice velocities |
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DO J=1-OLy,sNy+OLy |
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DO I=1-OLx,sNx+OLx |
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duIcNm1(I,J,bi,bj) = uIce(I,J,bi,bj) * bdfAlpha |
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& + ( uIce(I,J,bi,bj) - uIceNm1(I,J,bi,bj) ) * bdfFac |
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dvIcNm1(I,J,bi,bj) = vIce(I,J,bi,bj) * bdfAlpha |
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& + ( vIce(I,J,bi,bj) - vIceNm1(I,J,bi,bj) ) * bdfFac |
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uIceNm1(I,J,bi,bj) = uIce(I,J,bi,bj) |
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vIceNm1(I,J,bi,bj) = vIce(I,J,bi,bj) |
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uIceLin(I,J,bi,bj) = uIce(I,J,bi,bj) |
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vIceLin(I,J,bi,bj) = vIce(I,J,bi,bj) |
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ENDDO |
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ENDDO |
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C Compute things that do no change during the OL iteration: |
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C sea-surface tilt and wind stress: |
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C FORCEX/Y0 - mass*(1.5*u/vIceNm1+0.5*(u/vIceNm1-u/vIceNm2))/deltaT |
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DO J=1-OLy,sNy+OLy |
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DO I=1-OLx,sNx+OLx |
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FORCEX(I,J,bi,bj) = FORCEX0(I,J,bi,bj) |
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& + seaiceMassU(I,J,bi,bj)*duIcNm1(I,J,bi,bj)*recip_deltaT |
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FORCEY(I,J,bi,bj) = FORCEY0(I,J,bi,bj) |
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& + seaiceMassV(I,J,bi,bj)*dvIcNm1(I,J,bi,bj)*recip_deltaT |
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ENDDO |
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ENDDO |
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CML ENDIF |
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ENDDO |
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ENDDO |
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C Start nonlinear Picard iteration: outer loop iteration |
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DO WHILE ( picardIter.LT.picardIterMax .AND. |
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& .NOT.picardConverged ) |
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picardIter = picardIter + 1 |
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C smooth ice velocities in time for computation of |
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C the non-linear drag coefficents |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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uIceLin(I,J,bi,bj) = 0.5 _d 0 * |
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& (uIce(I,J,bi,bj) + uIceLin(I,J,bi,bj)) |
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vIceLin(I,J,bi,bj) = 0.5 _d 0 * |
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& (vIce(I,J,bi,bj) + vIceLin(I,J,bi,bj)) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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C u/vIce have changed in Picard iteration so that new drag |
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C coefficients and viscosities are required (that will not change in |
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C the Krylov iteration) |
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CALL SEAICE_OCEANDRAG_COEFFS( |
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I uIceLin, vIceLin, |
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O DWATN, |
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I 0, myTime, myIter, myThid ) |
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CALL SEAICE_CALC_STRAINRATES( |
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I uIceLin, vIceLin, |
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O e11, e22, e12, |
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I 0, myTime, myIter, myThid ) |
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CALL SEAICE_CALC_VISCOSITIES( |
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I e11, e22, e12, zMin, zMax, hEffM, press0, tensileStrength, |
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O eta, etaZ, zeta, zetaZ, press, deltaC, |
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I 0, myTime, myIter, myThid ) |
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C compute rhs that does not change during Krylov iteration |
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CALL SEAICE_CALC_RHS( |
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O uIceRHS, vIceRHS, |
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I picardIter, 0, myTime, myIter, myThid ) |
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C compute rhs for initial residual |
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CALL SEAICE_CALC_LHS( |
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I uIce, vIce, |
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O uIceLHS, vIceLHS, |
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I picardIter, myTime, myIter, myThid ) |
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C Calculate the residual |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO J=1,sNy |
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DO I=1,sNx |
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uIceLHS(I,J,bi,bj) = uIceLHS(I,J,bi,bj) - uIceRHS(I,J,bi,bj) |
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vIceLHS(I,J,bi,bj) = vIceLHS(I,J,bi,bj) - vIceRHS(I,J,bi,bj) |
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C save u/vIceLin as k-2nd step for linearization (does not work properly) |
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CML uIceLin(I,J,bi,bj) = uIce(I,J,bi,bj) |
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CML vIceLin(I,J,bi,bj) = vIce(I,J,bi,bj) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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C Important: Compute the norm of the residual using the same scalar |
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C product that SEAICE_FGMRES does |
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CALL SEAICE_MAP2VEC(nVec,uIceLHS,vIceLHS,resTmp,.TRUE.,myThid) |
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CALL SEAICE_SCALPROD(nVec,1,1,1,resTmp,resTmp, |
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& picardResidual,myThid) |
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picardResidual = SQRT(picardResidual) |
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|
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C compute convergence criterion for linear preconditioned FGMRES |
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krylovLinTol = JFNKgamma_lin_max |
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C the best method is still not clear to me |
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C this is described in Lemieux et al 2008 |
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CML IF ( picardIter .EQ. 1 ) krylovLinTol = 1./10. |
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CML IF ( picardIter .EQ. 2 ) krylovLinTol = 1./20. |
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CML IF ( picardIter .EQ. 3 ) krylovLinTol = 1./20. |
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CML IF ( picardIter .EQ. 4 ) krylovLinTol = 1./30. |
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CML IF ( picardIter .EQ. 5 ) krylovLinTol = 1./30. |
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CML IF ( picardIter .EQ. 6 ) krylovLinTol = 1./30. |
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CML IF ( picardIter .EQ. 7 ) krylovLinTol = 1./30. |
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CML IF ( picardIter .EQ. 8 ) krylovLinTol = 1./40. |
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CML IF ( picardIter .EQ. 9 ) krylovLinTol = 1./50. |
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CML IF ( picardIter .GT. 9 ) krylovLinTol = 1./80. |
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C this is used with the JFNK solver, but the Picard-Krylov solver |
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C converges too slowly for this scheme |
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CML IF ( picardIter.GT.1.AND.picardResidual.LT.JFNKres_t ) THEN |
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CMLC Eisenstat and Walker (1996), eq.(2.6) |
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CML krylovLinTol = SEAICE_JFNKphi |
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CML & *( picardResidual/picardResidualKm1 )**SEAICE_JFNKalpha |
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CML krylovLinTol = min(JFNKgamma_lin_max, krylovLinTol) |
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CML krylovLinTol = max(JFNKgamma_lin_min, krylovLinTol) |
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CML ENDIF |
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CML krylovLinTol = 1. _d -1 |
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C save the residual for the next iteration |
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picardResidualKm1 = picardResidual |
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|
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C The Krylov iteration uses FGMRES, the preconditioner is LSOR |
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C for now. The code is adapted from SEAICE_LSR, but heavily stripped |
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C down. |
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C krylovIter is mapped into "its" in seaice_fgmres and is incremented |
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C in that routine |
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krylovIter = 0 |
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iCode = 0 |
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|
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picardConverged = picardResidual.LT.picardTol |
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|
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C do Krylov loop only if convergence is not reached |
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|
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IF ( .NOT.picardConverged ) THEN |
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|
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C start Krylov iteration (FGMRES) |
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|
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krylovConverged = .FALSE. |
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FGMRESeps = krylovLinTol * picardResidual |
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CALL SEAICE_MAP2VEC(nVec,uIce,vIce,sol,.TRUE.,myThid) |
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CALL SEAICE_MAP2VEC(nVec,uIceRHS,vIceRHS,rhs,.TRUE.,myThid) |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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uWork(i,j,bi,bj) = 0. _d 0 |
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vWork(i,j,bi,bj) = 0. _d 0 |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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DO WHILE ( .NOT.krylovConverged ) |
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C solution vector sol = u/vIce |
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C residual vector (rhs) Fu = u/vIceRHS |
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C output work vectors wk1, -> input work vector wk2 |
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|
| 308 |
C map results to wk2 |
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CALL SEAICE_MAP2VEC(nVec,uWork,vWork,wk2,.TRUE.,myThid) |
| 310 |
|
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CALL SEAICE_FGMRES (nVec,im,rhs,sol,ifgmres,krylovIter, |
| 312 |
U vv,w,wk1,wk2, |
| 313 |
I FGMRESeps,krylovIterMax,iOutFGMRES, |
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U iCode, |
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I myThid) |
| 316 |
C |
| 317 |
IF ( iCode .EQ. 0 ) THEN |
| 318 |
C map sol(ution) vector to u/vIce |
| 319 |
CALL SEAICE_MAP2VEC(nVec,uIce,vIce,sol,.FALSE.,myThid) |
| 320 |
CALL EXCH_UV_XY_RL( uIce, vIce,.TRUE.,myThid) |
| 321 |
ELSE |
| 322 |
C map work vector to du/vIce to either compute a preconditioner |
| 323 |
C solution (wk1=rhs) or a matrix times wk1 |
| 324 |
CALL SEAICE_MAP2VEC(nVec,uWork,vWork,wk1,.FALSE.,myThid) |
| 325 |
CALL EXCH_UV_XY_RL( uWork, vWork,.TRUE.,myThid) |
| 326 |
ENDIF |
| 327 |
|
| 328 |
C FGMRES returns iCode either asking for an new preconditioned vector |
| 329 |
C or product of matrix times vector. For iCode = 0, terminate |
| 330 |
C iteration |
| 331 |
IF (iCode.EQ.1) THEN |
| 332 |
C Call preconditioner |
| 333 |
IF ( SEAICEpreconLinIter .GT. 0 ) |
| 334 |
& CALL SEAICE_PRECONDITIONER( |
| 335 |
U uWork, vWork, |
| 336 |
I zeta, eta, etaZ, zetaZ, dwatn, |
| 337 |
I picardIter, krylovIter, myTime, myIter, myThid ) |
| 338 |
ELSEIF (iCode.GE.2) THEN |
| 339 |
C Compute lhs of equations (A*x) |
| 340 |
CALL SEAICE_CALC_STRAINRATES( |
| 341 |
I uWork, vWork, |
| 342 |
O e11, e22, e12, |
| 343 |
I krylovIter, myTime, myIter, myThid ) |
| 344 |
CALL SEAICE_CALC_LHS( |
| 345 |
I uWork, vWork, |
| 346 |
O uIceLHS, vIceLHS, |
| 347 |
I picardIter, myTime, myIter, myThid ) |
| 348 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 349 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 350 |
DO j=1-OLy,sNy+OLy |
| 351 |
DO i=1-OLx,sNx+OLx |
| 352 |
uWork(i,j,bi,bj) = uIceLHS(i,j,bi,bj) |
| 353 |
vWork(i,j,bi,bj) = vIceLHS(i,j,bi,bj) |
| 354 |
ENDDO |
| 355 |
ENDDO |
| 356 |
ENDDO |
| 357 |
ENDDO |
| 358 |
ENDIF |
| 359 |
krylovConverged = iCode.EQ.0 |
| 360 |
C End of Krylov iterate |
| 361 |
ENDDO |
| 362 |
totalKrylovItersLoc = totalKrylovItersLoc + krylovIter |
| 363 |
C some output diagnostics |
| 364 |
IF ( debugLevel.GE.debLevA |
| 365 |
& .AND. .NOT.SEAICEusePicardAsPrecon ) THEN |
| 366 |
_BEGIN_MASTER( myThid ) |
| 367 |
totalPicardItersLoc = |
| 368 |
& picardIterMax*(myIter-nIter0)+picardIter |
| 369 |
WRITE(msgBuf,'(2A,2(1XI6),2E12.5)') |
| 370 |
& ' S/R SEAICE_KRYLOV: Picard iterate / total, ', |
| 371 |
& 'KRYLOVgamma_lin, initial norm = ', |
| 372 |
& picardIter, totalPicardItersLoc, |
| 373 |
& krylovLinTol,picardResidual |
| 374 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 375 |
& SQUEEZE_RIGHT, myThid ) |
| 376 |
WRITE(msgBuf,'(3(A,I6))') |
| 377 |
& ' S/R SEAICE_KRYLOV: Picard iterate / total = ', |
| 378 |
& picardIter, ' / ', totalPicardItersLoc, |
| 379 |
& ', Nb. of FGMRES iterations = ', krylovIter |
| 380 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 381 |
& SQUEEZE_RIGHT, myThid ) |
| 382 |
_END_MASTER( myThid ) |
| 383 |
ENDIF |
| 384 |
IF ( krylovIter.EQ.krylovIterMax ) THEN |
| 385 |
krylovFails = krylovFails + 1 |
| 386 |
ENDIF |
| 387 |
C Set the stopping criterion for the Picard iteration and the |
| 388 |
C criterion for the transition from accurate to approximate FGMRES |
| 389 |
IF ( picardIter .EQ. 1 ) THEN |
| 390 |
picardTol=SEAICEnonLinTol*picardResidual |
| 391 |
IF ( JFNKres_tFac .NE. UNSET_RL ) |
| 392 |
& JFNKres_t = picardResidual * JFNKres_tFac |
| 393 |
ENDIF |
| 394 |
ENDIF |
| 395 |
C end of Picard iterate |
| 396 |
ENDDO |
| 397 |
|
| 398 |
C-- Output diagnostics |
| 399 |
|
| 400 |
IF ( SEAICE_monFreq .GT. 0. _d 0 ) THEN |
| 401 |
C Count iterations |
| 402 |
totalJFNKtimeSteps = totalJFNKtimeSteps + 1 |
| 403 |
totalNewtonIters = totalNewtonIters + picardIter |
| 404 |
totalKrylovIters = totalKrylovIters + totalKrylovItersLoc |
| 405 |
C Record failure |
| 406 |
totalKrylovFails = totalKrylovFails + krylovFails |
| 407 |
IF ( picardIter .EQ. picardIterMax ) THEN |
| 408 |
totalNewtonfails = totalNewtonfails + 1 |
| 409 |
ENDIF |
| 410 |
ENDIF |
| 411 |
C Decide whether it is time to dump and reset the counter |
| 412 |
writeNow = DIFFERENT_MULTIPLE(SEAICE_monFreq, |
| 413 |
& myTime+deltaTClock, deltaTClock) |
| 414 |
#ifdef ALLOW_CAL |
| 415 |
IF ( useCAL ) THEN |
| 416 |
CALL CAL_TIME2DUMP( |
| 417 |
I zeroRL, SEAICE_monFreq, deltaTClock, |
| 418 |
U writeNow, |
| 419 |
I myTime+deltaTclock, myIter+1, myThid ) |
| 420 |
ENDIF |
| 421 |
#endif |
| 422 |
IF ( writeNow ) THEN |
| 423 |
_BEGIN_MASTER( myThid ) |
| 424 |
WRITE(msgBuf,'(A)') |
| 425 |
&' // =======================================================' |
| 426 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 427 |
& SQUEEZE_RIGHT, myThid ) |
| 428 |
WRITE(msgBuf,'(A)') ' // Begin KRYLOV statistics' |
| 429 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 430 |
& SQUEEZE_RIGHT, myThid ) |
| 431 |
WRITE(msgBuf,'(A)') |
| 432 |
&' // =======================================================' |
| 433 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 434 |
& SQUEEZE_RIGHT, myThid ) |
| 435 |
WRITE(msgBuf,'(A,I10)') |
| 436 |
& ' %KRYLOV_MON: time step = ', myIter+1 |
| 437 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 438 |
& SQUEEZE_RIGHT, myThid ) |
| 439 |
WRITE(msgBuf,'(A,I10)') |
| 440 |
& ' %KRYLOV_MON: Nb. of time steps = ', |
| 441 |
& totalJFNKtimeSteps |
| 442 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 443 |
& SQUEEZE_RIGHT, myThid ) |
| 444 |
WRITE(msgBuf,'(A,I10)') |
| 445 |
& ' %KRYLOV_MON: Nb. of Picard steps = ', totalNewtonIters |
| 446 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 447 |
& SQUEEZE_RIGHT, myThid ) |
| 448 |
WRITE(msgBuf,'(A,I10)') |
| 449 |
& ' %KRYLOV_MON: Nb. of Krylov steps = ', totalKrylovIters |
| 450 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 451 |
& SQUEEZE_RIGHT, myThid ) |
| 452 |
WRITE(msgBuf,'(A,I10)') |
| 453 |
& ' %KRYLOV_MON: Nb. of Picard failures = ', totalNewtonfails |
| 454 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 455 |
& SQUEEZE_RIGHT, myThid ) |
| 456 |
WRITE(msgBuf,'(A,I10)') |
| 457 |
& ' %KRYLOV_MON: Nb. of Krylov failures = ', totalKrylovFails |
| 458 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 459 |
& SQUEEZE_RIGHT, myThid ) |
| 460 |
WRITE(msgBuf,'(A)') |
| 461 |
&' // =======================================================' |
| 462 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 463 |
& SQUEEZE_RIGHT, myThid ) |
| 464 |
WRITE(msgBuf,'(A)') ' // End KRYLOV statistics' |
| 465 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 466 |
& SQUEEZE_RIGHT, myThid ) |
| 467 |
WRITE(msgBuf,'(A)') |
| 468 |
&' // =======================================================' |
| 469 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 470 |
& SQUEEZE_RIGHT, myThid ) |
| 471 |
_END_MASTER( myThid ) |
| 472 |
C reset and start again |
| 473 |
totalJFNKtimeSteps = 0 |
| 474 |
totalNewtonIters = 0 |
| 475 |
totalKrylovIters = 0 |
| 476 |
totalKrylovFails = 0 |
| 477 |
totalNewtonfails = 0 |
| 478 |
ENDIF |
| 479 |
|
| 480 |
C Print more debugging information |
| 481 |
IF ( debugLevel.GE.debLevA |
| 482 |
& .AND. .NOT.SEAICEusePicardAsPrecon ) THEN |
| 483 |
IF ( picardIter .EQ. picardIterMax ) THEN |
| 484 |
_BEGIN_MASTER( myThid ) |
| 485 |
WRITE(msgBuf,'(A,I10)') |
| 486 |
& ' S/R SEAICE_KRYLOV: Solver did not converge in timestep ', |
| 487 |
& myIter+1 |
| 488 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 489 |
& SQUEEZE_RIGHT, myThid ) |
| 490 |
_END_MASTER( myThid ) |
| 491 |
ENDIF |
| 492 |
IF ( krylovFails .GT. 0 ) THEN |
| 493 |
_BEGIN_MASTER( myThid ) |
| 494 |
WRITE(msgBuf,'(A,I4,A,I10)') |
| 495 |
& ' S/R SEAICE_KRYLOV: FGMRES did not converge ', |
| 496 |
& krylovFails, ' times in timestep ', myIter+1 |
| 497 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 498 |
& SQUEEZE_RIGHT, myThid ) |
| 499 |
_END_MASTER( myThid ) |
| 500 |
ENDIF |
| 501 |
_BEGIN_MASTER( myThid ) |
| 502 |
WRITE(msgBuf,'(A,I6,A,I10)') |
| 503 |
& ' S/R SEAICE_KRYLOV: Total number FGMRES iterations = ', |
| 504 |
& totalKrylovItersLoc, ' in timestep ', myIter+1 |
| 505 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 506 |
& SQUEEZE_RIGHT, myThid ) |
| 507 |
_END_MASTER( myThid ) |
| 508 |
ENDIF |
| 509 |
|
| 510 |
#endif /* SEAICE_ALLOW_KRYLOV */ |
| 511 |
|
| 512 |
RETURN |
| 513 |
END |
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