diff --git a/MY_SRC/stpctl.F90 b/MY_SRC/stpctl.F90
new file mode 100644
index 0000000000000000000000000000000000000000..ededc36f82cccc691064efee91d1ab98b9333e56
--- /dev/null
+++ b/MY_SRC/stpctl.F90
@@ -0,0 +1,189 @@
+MODULE stpctl
+ !!======================================================================
+ !! *** MODULE stpctl ***
+ !! Ocean run control : gross check of the ocean time stepping
+ !!======================================================================
+ !! History : OPA ! 1991-03 (G. Madec) Original code
+ !! 6.0 ! 1992-06 (M. Imbard)
+ !! 8.0 ! 1997-06 (A.M. Treguier)
+ !! NEMO 1.0 ! 2002-06 (G. Madec) F90: Free form and module
+ !! 2.0 ! 2009-07 (G. Madec) Add statistic for time-spliting
+ !!----------------------------------------------------------------------
+
+ !!----------------------------------------------------------------------
+ !! stp_ctl : Control the run
+ !!----------------------------------------------------------------------
+ USE oce ! ocean dynamics and tracers variables
+ USE dom_oce ! ocean space and time domain variables
+ USE c1d ! 1D vertical configuration
+ !
+ USE in_out_manager ! I/O manager
+ USE lbclnk ! ocean lateral boundary conditions (or mpp link)
+ USE lib_mpp ! distributed memory computing
+ USE lib_fortran ! Fortran routines library
+
+ IMPLICIT NONE
+ PRIVATE
+
+ PUBLIC stp_ctl ! routine called by step.F90
+ !!----------------------------------------------------------------------
+ !! NEMO/OPA 3.3 , NEMO Consortium (2010)
+ !! $Id: stpctl.F90 7852 2017-03-30 14:04:54Z cetlod $
+ !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
+ !!----------------------------------------------------------------------
+CONTAINS
+
+ SUBROUTINE stp_ctl( kt, kindic )
+ !!----------------------------------------------------------------------
+ !! *** ROUTINE stp_ctl ***
+ !!
+ !! ** Purpose : Control the run
+ !!
+ !! ** Method : - Save the time step in numstp
+ !! - Print it each 50 time steps
+ !! - Stop the run IF problem ( indic < 0 )
+ !!
+ !! ** Actions : 'time.step' file containing the last ocean time-step
+ !!
+ !!----------------------------------------------------------------------
+ INTEGER, INTENT(in ) :: kt ! ocean time-step index
+ INTEGER, INTENT(inout) :: kindic ! error indicator
+ !!
+ INTEGER :: ji, jj, jk ! dummy loop indices
+ INTEGER :: ii, ij, ik ! local integers
+ REAL(wp) :: velmax2, zsmin, zssh2, zsshmax ! local scalars
+ INTEGER, DIMENSION(3) :: ilocu !
+ INTEGER, DIMENSION(2) :: ilocs !
+ !!----------------------------------------------------------------------
+ !
+ IF( kt == nit000 .AND. lwp ) THEN
+ WRITE(numout,*)
+ WRITE(numout,*) 'stp_ctl : time-stepping control'
+ WRITE(numout,*) '~~~~~~~'
+ ! open time.step file
+ CALL ctl_opn( numstp, 'time.step', 'REPLACE', 'FORMATTED', 'SEQUENTIAL', -1, numout, lwp, narea )
+ ENDIF
+ !
+ IF(lwp) WRITE ( numstp, '(1x, i8)' ) kt !* save the current time step in numstp
+ IF(lwp) REWIND( numstp ) ! --------------------------
+ !
+ ! !* Test maximum of velocity
+ ! ! ------------------------
+ !! velmax2 = MAXVAL( ABS( un(:,:,:) ) ) ! slower than the following loop on NEC SX5
+ velmax2 = 0.e0
+ DO jk = 1, jpk
+ DO jj = 1, jpj
+ DO ji = 1, jpi
+ velmax2 = MAX( velmax2,un(ji,jj,jk)**2 + vn(ji,jj,jk)**2 )
+ END DO
+ END DO
+ END DO
+ IF( lk_mpp ) CALL mpp_max( velmax2 ) ! max over the global domain
+ !
+ IF( MOD( kt, nwrite ) == 1 .AND. lwp ) WRITE(numout,*) ' ==>> time-step= ',kt,' 3d speed2 max: ', velmax2
+ !
+ IF( velmax2 > 20.e0**2 ) THEN
+ IF( lk_mpp ) THEN
+ CALL mpp_maxloc( un(:,:,:)**2+vn(:,:,:)**2,umask,velmax2,ii,ij,ik)
+ ELSE
+ ilocu = MAXLOC( un(:,:,:)**2 + vn(:,:,:)**2 )
+ ii = ilocu(1) + nimpp - 1
+ ij = ilocu(2) + njmpp - 1
+ ik = ilocu(3)
+ ENDIF
+ IF(lwp) THEN
+ WRITE(numout,cform_err)
+ WRITE(numout,*) ' stpctl: the speed is larger than 20 m/s'
+ WRITE(numout,*) ' ====== '
+ WRITE(numout,9400) kt, velmax2, ii, ij, ik
+ WRITE(numout,*)
+ WRITE(numout,*) ' output of last fields in numwso'
+ ENDIF
+ kindic = -3
+ ENDIF
+9400 FORMAT (' kt=',i6,' max abs(vel)**2: ',1pg11.4,', i j k: ',3i5)
+ !
+ ! !* Test minimum of salinity
+ ! ! ------------------------
+ !! zsmin = MINVAL( tsn(:,:,1,jp_sal), mask = tmask(:,:,1) == 1.e0 ) slower than the following loop on NEC SX5
+ zsmin = 100._wp
+ DO jj = 2, jpjm1
+ DO ji = 1, jpi
+ IF( tmask(ji,jj,1) == 1) zsmin = MIN(zsmin,tsn(ji,jj,1,jp_sal))
+ END DO
+ END DO
+ IF( lk_mpp ) CALL mpp_min( zsmin ) ! min over the global domain
+ !
+ IF( MOD( kt, nwrite ) == 1 .AND. lwp ) WRITE(numout,*) ' ==>> time-step= ',kt,' SSS min:', zsmin
+ !
+ IF( zsmin < 0.) THEN
+ IF (lk_mpp) THEN
+ CALL mpp_minloc ( tsn(:,:,1,jp_sal),tmask(:,:,1), zsmin, ii,ij )
+ ELSE
+ ilocs = MINLOC( tsn(:,:,1,jp_sal), mask = tmask(:,:,1) == 1.e0 )
+ ii = ilocs(1) + nimpp - 1
+ ij = ilocs(2) + njmpp - 1
+ ENDIF
+ !
+ IF(lwp) THEN
+ WRITE(numout,cform_err)
+ WRITE(numout,*) 'stp_ctl : NEGATIVE sea surface salinity'
+ WRITE(numout,*) '======= '
+ WRITE(numout,9500) kt, zsmin, ii, ij
+ WRITE(numout,*)
+ WRITE(numout,*) ' output of last fields in numwso'
+ ENDIF
+ kindic = -3
+ ENDIF
+9500 FORMAT (' kt=',i6,' min SSS: ',1pg11.4,', i j: ',2i5)
+ !
+ !
+ IF( lk_c1d ) RETURN ! No log file in case of 1D vertical configuration
+
+ ! log file (ssh statistics)
+ ! -------- !* ssh statistics (and others...)
+ IF( kt == nit000 .AND. lwp ) THEN ! open ssh statistics file (put in solver.stat file)
+ CALL ctl_opn( numsol, 'solver.stat', 'REPLACE', 'FORMATTED', 'SEQUENTIAL', -1, numout, lwp, narea )
+ ENDIF
+ !
+ zsshmax = 0.e0
+ DO jj = 1, jpj
+ DO ji = 1, jpi
+ IF( tmask(ji,jj,1) == 1) zsshmax = MAX( zsshmax, ABS(sshn(ji,jj)) )
+ END DO
+ END DO
+ IF( lk_mpp ) CALL mpp_max( zsshmax ) ! min over the global domain
+ !
+ IF( MOD( kt, nwrite ) == 1 .AND. lwp ) WRITE(numout,*) ' ==>> time-step= ',kt,' ssh max:', zsshmax
+ !
+ IF( zsshmax > 10.e0 ) THEN
+ IF (lk_mpp) THEN
+ CALL mpp_maxloc( ABS(sshn(:,:)),tmask(:,:,1),zsshmax,ii,ij)
+ ELSE
+ ilocs = MAXLOC( ABS(sshn(:,:)) )
+ ii = ilocs(1) + nimpp - 1
+ ij = ilocs(2) + njmpp - 1
+ ENDIF
+ !
+ IF(lwp) THEN
+ WRITE(numout,cform_err)
+ WRITE(numout,*) 'stp_ctl : the ssh is larger than 10m'
+ WRITE(numout,*) '======= '
+ WRITE(numout,9600) kt, zsshmax, ii, ij
+ WRITE(numout,*)
+ WRITE(numout,*) ' output of last fields in numwso'
+ ENDIF
+ kindic = -3
+ ENDIF
+9600 FORMAT (' kt=',i6,' max ssh: ',1pg11.4,', i j: ',2i5)
+ !
+ zssh2 = glob_sum( sshn(:,:) * sshn(:,:) )
+ !
+ IF(lwp) WRITE(numsol,9700) kt, zssh2, velmax2, zsmin ! ssh statistics
+ !
+9700 FORMAT(' it :', i8, ' ssh2: ', d23.16, ' vel2max: ',d23.16,' SSSmin: ',d23.16)
+ !
+ END SUBROUTINE stp_ctl
+
+ !!======================================================================
+END MODULE stpctl
diff --git a/NAMELISTS_AND_FORTRAN_FILES/f_files/stpctl.F90 b/NAMELISTS_AND_FORTRAN_FILES/f_files/stpctl.F90
new file mode 100644
index 0000000000000000000000000000000000000000..ededc36f82cccc691064efee91d1ab98b9333e56
--- /dev/null
+++ b/NAMELISTS_AND_FORTRAN_FILES/f_files/stpctl.F90
@@ -0,0 +1,189 @@
+MODULE stpctl
+ !!======================================================================
+ !! *** MODULE stpctl ***
+ !! Ocean run control : gross check of the ocean time stepping
+ !!======================================================================
+ !! History : OPA ! 1991-03 (G. Madec) Original code
+ !! 6.0 ! 1992-06 (M. Imbard)
+ !! 8.0 ! 1997-06 (A.M. Treguier)
+ !! NEMO 1.0 ! 2002-06 (G. Madec) F90: Free form and module
+ !! 2.0 ! 2009-07 (G. Madec) Add statistic for time-spliting
+ !!----------------------------------------------------------------------
+
+ !!----------------------------------------------------------------------
+ !! stp_ctl : Control the run
+ !!----------------------------------------------------------------------
+ USE oce ! ocean dynamics and tracers variables
+ USE dom_oce ! ocean space and time domain variables
+ USE c1d ! 1D vertical configuration
+ !
+ USE in_out_manager ! I/O manager
+ USE lbclnk ! ocean lateral boundary conditions (or mpp link)
+ USE lib_mpp ! distributed memory computing
+ USE lib_fortran ! Fortran routines library
+
+ IMPLICIT NONE
+ PRIVATE
+
+ PUBLIC stp_ctl ! routine called by step.F90
+ !!----------------------------------------------------------------------
+ !! NEMO/OPA 3.3 , NEMO Consortium (2010)
+ !! $Id: stpctl.F90 7852 2017-03-30 14:04:54Z cetlod $
+ !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
+ !!----------------------------------------------------------------------
+CONTAINS
+
+ SUBROUTINE stp_ctl( kt, kindic )
+ !!----------------------------------------------------------------------
+ !! *** ROUTINE stp_ctl ***
+ !!
+ !! ** Purpose : Control the run
+ !!
+ !! ** Method : - Save the time step in numstp
+ !! - Print it each 50 time steps
+ !! - Stop the run IF problem ( indic < 0 )
+ !!
+ !! ** Actions : 'time.step' file containing the last ocean time-step
+ !!
+ !!----------------------------------------------------------------------
+ INTEGER, INTENT(in ) :: kt ! ocean time-step index
+ INTEGER, INTENT(inout) :: kindic ! error indicator
+ !!
+ INTEGER :: ji, jj, jk ! dummy loop indices
+ INTEGER :: ii, ij, ik ! local integers
+ REAL(wp) :: velmax2, zsmin, zssh2, zsshmax ! local scalars
+ INTEGER, DIMENSION(3) :: ilocu !
+ INTEGER, DIMENSION(2) :: ilocs !
+ !!----------------------------------------------------------------------
+ !
+ IF( kt == nit000 .AND. lwp ) THEN
+ WRITE(numout,*)
+ WRITE(numout,*) 'stp_ctl : time-stepping control'
+ WRITE(numout,*) '~~~~~~~'
+ ! open time.step file
+ CALL ctl_opn( numstp, 'time.step', 'REPLACE', 'FORMATTED', 'SEQUENTIAL', -1, numout, lwp, narea )
+ ENDIF
+ !
+ IF(lwp) WRITE ( numstp, '(1x, i8)' ) kt !* save the current time step in numstp
+ IF(lwp) REWIND( numstp ) ! --------------------------
+ !
+ ! !* Test maximum of velocity
+ ! ! ------------------------
+ !! velmax2 = MAXVAL( ABS( un(:,:,:) ) ) ! slower than the following loop on NEC SX5
+ velmax2 = 0.e0
+ DO jk = 1, jpk
+ DO jj = 1, jpj
+ DO ji = 1, jpi
+ velmax2 = MAX( velmax2,un(ji,jj,jk)**2 + vn(ji,jj,jk)**2 )
+ END DO
+ END DO
+ END DO
+ IF( lk_mpp ) CALL mpp_max( velmax2 ) ! max over the global domain
+ !
+ IF( MOD( kt, nwrite ) == 1 .AND. lwp ) WRITE(numout,*) ' ==>> time-step= ',kt,' 3d speed2 max: ', velmax2
+ !
+ IF( velmax2 > 20.e0**2 ) THEN
+ IF( lk_mpp ) THEN
+ CALL mpp_maxloc( un(:,:,:)**2+vn(:,:,:)**2,umask,velmax2,ii,ij,ik)
+ ELSE
+ ilocu = MAXLOC( un(:,:,:)**2 + vn(:,:,:)**2 )
+ ii = ilocu(1) + nimpp - 1
+ ij = ilocu(2) + njmpp - 1
+ ik = ilocu(3)
+ ENDIF
+ IF(lwp) THEN
+ WRITE(numout,cform_err)
+ WRITE(numout,*) ' stpctl: the speed is larger than 20 m/s'
+ WRITE(numout,*) ' ====== '
+ WRITE(numout,9400) kt, velmax2, ii, ij, ik
+ WRITE(numout,*)
+ WRITE(numout,*) ' output of last fields in numwso'
+ ENDIF
+ kindic = -3
+ ENDIF
+9400 FORMAT (' kt=',i6,' max abs(vel)**2: ',1pg11.4,', i j k: ',3i5)
+ !
+ ! !* Test minimum of salinity
+ ! ! ------------------------
+ !! zsmin = MINVAL( tsn(:,:,1,jp_sal), mask = tmask(:,:,1) == 1.e0 ) slower than the following loop on NEC SX5
+ zsmin = 100._wp
+ DO jj = 2, jpjm1
+ DO ji = 1, jpi
+ IF( tmask(ji,jj,1) == 1) zsmin = MIN(zsmin,tsn(ji,jj,1,jp_sal))
+ END DO
+ END DO
+ IF( lk_mpp ) CALL mpp_min( zsmin ) ! min over the global domain
+ !
+ IF( MOD( kt, nwrite ) == 1 .AND. lwp ) WRITE(numout,*) ' ==>> time-step= ',kt,' SSS min:', zsmin
+ !
+ IF( zsmin < 0.) THEN
+ IF (lk_mpp) THEN
+ CALL mpp_minloc ( tsn(:,:,1,jp_sal),tmask(:,:,1), zsmin, ii,ij )
+ ELSE
+ ilocs = MINLOC( tsn(:,:,1,jp_sal), mask = tmask(:,:,1) == 1.e0 )
+ ii = ilocs(1) + nimpp - 1
+ ij = ilocs(2) + njmpp - 1
+ ENDIF
+ !
+ IF(lwp) THEN
+ WRITE(numout,cform_err)
+ WRITE(numout,*) 'stp_ctl : NEGATIVE sea surface salinity'
+ WRITE(numout,*) '======= '
+ WRITE(numout,9500) kt, zsmin, ii, ij
+ WRITE(numout,*)
+ WRITE(numout,*) ' output of last fields in numwso'
+ ENDIF
+ kindic = -3
+ ENDIF
+9500 FORMAT (' kt=',i6,' min SSS: ',1pg11.4,', i j: ',2i5)
+ !
+ !
+ IF( lk_c1d ) RETURN ! No log file in case of 1D vertical configuration
+
+ ! log file (ssh statistics)
+ ! -------- !* ssh statistics (and others...)
+ IF( kt == nit000 .AND. lwp ) THEN ! open ssh statistics file (put in solver.stat file)
+ CALL ctl_opn( numsol, 'solver.stat', 'REPLACE', 'FORMATTED', 'SEQUENTIAL', -1, numout, lwp, narea )
+ ENDIF
+ !
+ zsshmax = 0.e0
+ DO jj = 1, jpj
+ DO ji = 1, jpi
+ IF( tmask(ji,jj,1) == 1) zsshmax = MAX( zsshmax, ABS(sshn(ji,jj)) )
+ END DO
+ END DO
+ IF( lk_mpp ) CALL mpp_max( zsshmax ) ! min over the global domain
+ !
+ IF( MOD( kt, nwrite ) == 1 .AND. lwp ) WRITE(numout,*) ' ==>> time-step= ',kt,' ssh max:', zsshmax
+ !
+ IF( zsshmax > 10.e0 ) THEN
+ IF (lk_mpp) THEN
+ CALL mpp_maxloc( ABS(sshn(:,:)),tmask(:,:,1),zsshmax,ii,ij)
+ ELSE
+ ilocs = MAXLOC( ABS(sshn(:,:)) )
+ ii = ilocs(1) + nimpp - 1
+ ij = ilocs(2) + njmpp - 1
+ ENDIF
+ !
+ IF(lwp) THEN
+ WRITE(numout,cform_err)
+ WRITE(numout,*) 'stp_ctl : the ssh is larger than 10m'
+ WRITE(numout,*) '======= '
+ WRITE(numout,9600) kt, zsshmax, ii, ij
+ WRITE(numout,*)
+ WRITE(numout,*) ' output of last fields in numwso'
+ ENDIF
+ kindic = -3
+ ENDIF
+9600 FORMAT (' kt=',i6,' max ssh: ',1pg11.4,', i j: ',2i5)
+ !
+ zssh2 = glob_sum( sshn(:,:) * sshn(:,:) )
+ !
+ IF(lwp) WRITE(numsol,9700) kt, zssh2, velmax2, zsmin ! ssh statistics
+ !
+9700 FORMAT(' it :', i8, ' ssh2: ', d23.16, ' vel2max: ',d23.16,' SSSmin: ',d23.16)
+ !
+ END SUBROUTINE stp_ctl
+
+ !!======================================================================
+END MODULE stpctl