problem with put_att (maximum number of attributes)

Alex Hoffmann ah519 at cam.ac.uk
Fri Feb 20 05:13:52 CST 2009


Many thanks, Wei-keng, the issue seems to have been tracked down...

For reasons that are still not completely clear to me, using trim() for
trimming the coordinate variable names and units (lines 480/81, 485/86)
seemed to leave a strange character (such as y diacritic or Y accent)
trailing on e.g. the units (such as degrees_east).  Though this did not
affect the run on its own, any subsequent attribute definition made the
code crash.  I fixed this by removing the trim().

If I may, I'd like to clarify one further issue with PnetCDF.
I initially implemented the code (also a small test program) in
collective data mode.  This did not work (the different
processes/Cartesian sub domains) did not write their data into the
netCDF file.  I then changed the data write statements into independent
data mode, with which it worked immediately.  Am I right to use
independent data mode for this purpose?

Thank you very much for your support.

Cheers

Lex

Wei-keng Liao wrote:
> Hi, Lex,
> 
> If this error message "NC definations on multiprocesses conflict"
> is the only one you got before every crash, it is most likely the
> attribute values are not the same across all processes.
> Please check that first, so you can rule out that possibility.
> 
> Also, can you check the attributes in the output file for the case
> that ran successfully? (using ncmpidump -c filename) This is just
> to see if the attributes are the ones you expected. Also, please
> make sure the number of attributes created is less than 4K global
> or per variable, as Rob indicated.
> 
> Wei-keng
> 
> 
> On Feb 19, 2009, at 5:53 PM, Alex Hoffmann wrote:
> 
>> Dear Wei-keng,
>>
>> I understand that the attribute define arguments must be the same across
>> all processes.   I am also almost certain that the arguments you cited
>> are identical across processes but I will perform a check.
>>
>> Be this as it may, I get the same arrow message if I uncomment one of
>> the text attributes specifying the unit or one of the real attributes
>> specifying the fill value, for instance.  There is no possibility that
>> these are different across processes as they are introduced straight
>> into the function call.  Any check I performed seemed to indicate that
>> the problem arises from the number of arguments I defined, and not from
>> the arguments themselves, since they work all fine individually.
>>
>> I was actually thinking to write the attributes ad-hoc once the dataset
>> is defined using regular netCDF functions.  This however seemed to be a
>> little elegant solution defeating the purpose of using PnetCDF.
>>
>> Thanks,
>>
>> Lex
>>
>>
>> Wei-keng Liao a écrit :
>>> Hi, Lex,
>>>
>>> PnetCDF requires the attribute define arguments be the same across
>>> all processes. This is why you got the error message for defining
>>> attribute "history" in line 400, if its value "conflicts" among
>>> processes.
>>> I think you have got this.
>>>
>>> I checked your codes. Starting from line 562, you have a few text
>>> attributes
>>> from des_tgas_picture(i), des_trac_picture(i), des_tpas_picture(i),
>>> and des.
>>> Similar for out_type == 2. Are you sure their values are all the same
>>> across
>>> all the processes? May be you can use MPI_Bcast to check if anyone has
>>> different value.
>>>
>>> Wei-keng
>>>
>>>
>>> On Feb 19, 2009, at 11:14 AM, Alex Hoffmann wrote:
>>>
>>>> Dear Rob
>>>> Thanks a lot for your answer.
>>>> Isolating the PnetCDF output module from the code as a stand-alone
>>>> would
>>>> require a substantial effort, and I do not encounter this error in  my
>>>> small test programs.  I attached the output module for reference.
>>>>
>>>> The attribute section that causes trouble is between lines 369-405
>>>> (global) and 468-613 (variables).  I am aware that the attribute
>>>> history
>>>> (line 400) may be problematic as every process may have a slightly
>>>> different value (for the time element taken from the fortran function
>>>> date_and_time).  Yet this is not the only issue.
>>>>
>>>> If I prematurely exit at line 492, uncommenting any further attribute
>>>> definition between 468 and 489 causes a crash with the multiprocesses
>>>> conflict.
>>>>
>>>> Note also that the attribute definitions between 558 and 613 only
>>>> produce no crash currently because of the print statements on lines 560
>>>> and 591, which made me think that maybe there is an optimization
>>>> problem.  What is strange is that if these are not included, the crash
>>>> occurs only when I start writing the first file (movie file,
>>>> out_type=2), AND if I leave the first block (if out_type==1)
>>>> uncommented, although this block is not even entered in that particular
>>>> case, and vice versa.  Hope this is more or less clear...
>>>>
>>>> Cheers,
>>>> Lex
>>>>
>>>>
>>>> Robert Latham wrote:
>>>>> On Thu, Feb 19, 2009 at 10:09:37AM +0000, Alex Hoffmann wrote:
>>>>>> Hello,
>>>>>> I am getting the same error message as had already been inquired
>>>>>> on in
>>>>>> this list, i.e.:
>>>>>>
>>>>>> NC definations on multiprocesses conflict.
>>>>>> NOTE: Definitions across all process
>>>>>>
>>>>>> and this seems to be related somehow randomly to the total number of
>>>>>> attributes (global or for each variable) that I intend to write
>>>>>> during
>>>>>> the the definition phase (and, though I am not sure about this, to
>>>>>> the
>>>>>> number of processes used to run my F90 parallel code).
>>>>>>
>>>>>> More precisely, if I uncomment one put_att to replace another, the
>>>>>> program still runs, if I do not comment out another one, the program
>>>>>> crashes with the above error message.
>>>>>>
>>>>>> Is there any way of identifying where this problem comes from or is
>>>>>> there a maximum amount of attributes (though I don't write an
>>>>>> excessive
>>>>>> amount of them)?  There is no problem running it on one process(or).
>>>>>
>>>>> Maybe you can show us with a small test program how you are
>>>>> encountering this error?  The maximum number of attributes is 4k (the
>>>>> constant NC_MAX_ATTRS).
>>>>>
>>>>> ==rob
>>>>>
>>>>
>>>> -- 
>>>> ______________________________________________________________________
>>>>
>>>> Alex HOFFMANN                     PhD Candidate
>>>> Centre for Atmospheric Science
>>>> Department of Geography           University of Cambridge
>>>> Downing Place, Cambridge CB2 3EN, UK
>>>> e-mail: ah519 at cam.ac.uk  tel: +44 (0)1223 766581
>>>> www.geog.cam.ac.uk/people/hoffmann/
>>>> ______________________________________________________________________
>>>> !-*- F90 -*-
>>>> module atham_pnetcdf
>>>>
>>>> !--------------------------------------------------------------------!
>>>> ! author:  Alex HOFFMANN                                             !
>>>> ! email:   ah519 at cam.ac.uk                                           !
>>>> ! date:    February 2009                                             !
>>>> ! version: v0.1                                                      !
>>>> !                                                                    !
>>>> ! collection of routines for ATHAM PnetCDF output                    !
>>>> !--------------------------------------------------------------------!
>>>>
>>>> ! module is to replace existing atham_netcdf.mod (GL) to write ATHAM
>>>> output as netCDF files
>>>> ! same as atham_netcdf.mod (AH) but adapted to run with the Parallel
>>>> NetCDF API,
>>>> !  developed by Northwestern University and Argonne National
>>>> Laboratory,
>>>> !  which is built on top of MPI-IO (tested with MPICH 2.1)
>>>>
>>>> use precision,    only : kint, kreal, real4, my_real
>>>>
>>>> use atham_module, only : nx, ny, nz, ntx, nty, npx, npy
>>>>
>>>>
>>>> use atham_module, only : ntgas_picture, ntrac_picture, ntpas_picture, &
>>>>                        ntgas_movie, ntrac_movie, ntpas_movie
>>>>
>>>> implicit none
>>>>
>>>> private
>>>> public :: netcdf_data
>>>>
>>>> ! 'pnetcdf.inc' file includes cpp directives that were not understood
>>>> at compile-time
>>>> ! this is to be changed and hard-wired link to be replaced by the
>>>> include 'pnetcdf.inc' command
>>>> !include 'pnetcdf.inc'
>>>> #include "/usr/local/parallel-netcdf-1.0.1/include/pnetcdf.inc"
>>>> include 'mpif.h'
>>>>
>>>>
>>>> ! ######### tried saving netCDF variable IDs here so that they must
>>>> not be retrieved by inquiry
>>>> ! ######### if this creates conflict, especially between picture and
>>>> movie file, this must be changed
>>>>   integer(kint), save                   :: x_dimID, y_dimID,
>>>> z_dimID, t_dimID
>>>>   integer(kint), save                   :: x_varID, y_varID,
>>>> z_varID, t_varID
>>>>   integer(kint), save                   :: u_varID, v_varID, w_varID
>>>>   integer(kint), save                   :: pnew_varID, tetnew_varID,
>>>> tempnew_varID, density_varID
>>>>   integer(kint), save                   :: turbhor_varID,
>>>> turbver_varID, turblen_varID
>>>>   integer(kint), dimension(99), save    :: tgas_varID, trac_varID,
>>>> tpas_varID, d_trac_varID
>>>>
>>>>
>>>>   integer(MPI_OFFSET_KIND), save        :: tcounter
>>>>
>>>>   real(real4), parameter                :: undef = -0.99e33_real4 !
>>>> make sure precision of _FillValue and output (NF90_FLOAT) is the same
>>>> !!!
>>>>
>>>> contains
>>>> !=====================================================================
>>>> subroutine netcdf_data(outfile,out_type,timetot)
>>>>   ! IF: outfile = picture_file or movie_file (path/filename for
>>>> output created in atham_module)
>>>>   !     out_type = 1 (picture_file) or 2 (movie_file)
>>>>   !     timetot = total simulation time since simulation start
>>>>
>>>>   use atham_module, only : unew, vnew, wnew, pnew, tetnew, tempnew, &
>>>>                            density, turbhor, turbver, turblen
>>>>
>>>>   use atham_module, only : tgasnew, tracnew, tpasnew, tracdep
>>>>
>>>>   use atham_module, only : itgas_picture, itrac_picture,
>>>> itpas_picture, &
>>>>                            itgas_movie, itrac_movie, itpas_movie
>>>>
>>>>   use atham_module, only : mycoor, my_cart, myrank
>>>>
>>>>   character(*),           intent(in   ) :: outfile
>>>>   integer(kint),          intent(in   ) :: out_type
>>>>   real(kreal),            intent(in   ) :: timetot
>>>>
>>>>   !------------------------------------------------------------------!
>>>>   ! local variables                                                  !
>>>>   !------------------------------------------------------------------!
>>>>   integer(MPI_OFFSET_KIND)              :: nx_mpi,ny_mpi, nz_mpi,
>>>> y_cl_mpi
>>>>   integer(MPI_OFFSET_KIND)              :: istart,jstart
>>>>   integer(kint)                         :: STATUS
>>>>   character(len=50)                     :: OP  ! debugging variable
>>>> corresponding to the called netCDF OPeration
>>>>   integer(kint)                         :: NCID
>>>>   integer(kint)                         :: i
>>>>   logical                               :: DynMovie_flag,
>>>> bounds_control
>>>>   integer(kint)                         :: y_st, y_sp, y_cl
>>>>
>>>>   ! replace DynMovie precompiler flag by program flag for more
>>>> convenient code structure
>>>>   DynMovie_flag = .false.
>>>> #ifdef DynMovie
>>>>   DynMovie_flag = .true.
>>>> #endif
>>>>
>>>>   ! re-assign dimension lengths as an MPI_Offset type (necessary for
>>>> the PnetCDF interface)
>>>>   ! cut-off subdomain borders
>>>>   nx_mpi  = nx-2
>>>>   ny_mpi  = ny-2
>>>>   nz_mpi  = nz
>>>>
>>>>   ! assign coordinates of first element of each process in the
>>>> netCDF file
>>>>   istart = mycoor(1)*nx_mpi + 1_MPI_OFFSET_KIND
>>>>   jstart = mycoor(2)*ny_mpi + 1_MPI_OFFSET_KIND
>>>>
>>>>   bounds_control = .true. ! debugging flag
>>>>   tcounter = tcounter+1_MPI_OFFSET_KIND
>>>>
>>>>   ! === open netCDF dataset: enter data mode ------------------------!
>>>>   ! if     dataset does not yet exist (STATUS =  ), create file and
>>>> enter data mode
>>>>   ! else   continue
>>>>   OP = 'open existing netCDF file'
>>>>   STATUS = nfmpi_open(my_cart, trim(outfile), NF_WRITE,
>>>> MPI_INFO_NULL, NCID)
>>>>   if ( STATUS /= nf_noerr ) then
>>>>      if (myrank==0) then
>>>>         print *, ""
>>>>         print *, "P-NetCDF operation: ",trim(OP)
>>>>         print *, trim(nfmpi_strerror(STATUS))
>>>>         print *, "atham_pnetcdf netcdf_data(): new netCDF file
>>>> created: ", outfile
>>>>         print *, ""
>>>>      end if
>>>>      call netcdf_define(outfile,out_type,timetot,NCID)
>>>>      tcounter = 1_MPI_OFFSET_KIND ! reset time counter for output if
>>>> new file is created
>>>>   end if
>>>>
>>>>   ! ---                        write data values --------------------!
>>>>   ! unlimited record dimension time (only one process writes the
>>>> whole dimension, i.e. accross all processes)
>>>>   OP = 'write data values - unlimited dimension t'
>>>>
>>>>   call handle_err(nfmpi_begin_indep_data(NCID))
>>>>
>>>>   if (myrank==0) then
>>>>      call handle_err(nfmpi_put_vara_real(NCID, t_varID,
>>>> (/tcounter/), (/1_MPI_OFFSET_KIND/), real(timetot,real4)),OP)
>>>>   end if
>>>>
>>>>   call handle_err(nfmpi_end_indep_data(NCID))
>>>>
>>>>   ! ---                        write data values --------------------!
>>>>   ! discriminate between 2D and 3D case for output generation
>>>>   if (nty>4) then
>>>>      y_st = 2    ! y index start
>>>>      y_sp = ny-1 ! y index stop
>>>>      y_cl = ny-2 ! y number of columns
>>>>   else
>>>>      y_st = ny-1 ! 3 in 2D case
>>>>      y_sp = ny-1 ! 3 in 2D case
>>>>      y_cl = 1
>>>>   end if
>>>>   y_cl_mpi = y_cl
>>>>
>>>>   ! dynamics data
>>>>   OP = 'write data values - data'
>>>>   if (out_type == 1 .OR. DynMovie_flag == .true.) then
>>>>      call write_data(real(unew,real4),u_varID)
>>>>      bounds_control = .false.
>>>>      call write_data(real(vnew,   real4),v_varID)
>>>>      call write_data(real(wnew,   real4),w_varID)
>>>>      call write_data(real(pnew,   real4),pnew_varID)
>>>>      call write_data(real(tetnew, real4),tetnew_varID)
>>>>      call write_data(real(tempnew,real4),tempnew_varID)
>>>>      call write_data(real(density,real4),density_varID)
>>>>      call write_data(real(turbhor,real4),turbhor_varID)
>>>>      call write_data(real(turbver,real4),turbver_varID)
>>>>      call write_data(real(turblen,real4),turblen_varID)
>>>>   end if
>>>>
>>>>   ! tracer data
>>>>   if (out_type == 1) then
>>>>      do i=1,ntgas_picture
>>>>         call
>>>> write_data(real(tgasnew(:,:,:,itgas_picture(i)),real4),tgas_varID(i))
>>>>      enddo
>>>>      do i=1,ntrac_picture
>>>>         call
>>>> write_data(real(tracnew(:,:,:,itrac_picture(i)),real4),trac_varID(i))
>>>>      enddo
>>>>      do i=1,ntpas_picture
>>>>         call
>>>> write_data(real(tpasnew(:,:,:,itpas_picture(i)),real4),tpas_varID(i))
>>>>      enddo
>>>>      do i=1,ntrac_picture
>>>>         call handle_err(nfmpi_begin_indep_data(NCID))
>>>>         call handle_err(nfmpi_put_vara_real(NCID,
>>>> d_trac_varID(i),(/istart,jstart,tcounter/), &
>>>>              (/nx_mpi,y_cl_mpi,1_MPI_OFFSET_KIND/),
>>>> real(reshape(tracdep(2:nx-1,y_st:y_sp,itrac_picture(i)),shape=(/nx-2,y_cl,1/)),real4)
>>>>
>>>> ),OP)
>>>>         call handle_err(nfmpi_end_indep_data(NCID))
>>>>      enddo
>>>>   else if (out_type == 2) then
>>>>      do i=1,ntgas_movie
>>>>         call
>>>> write_data(real(tgasnew(:,:,:,itgas_movie(i)),real4),tgas_varID(i))
>>>>      enddo
>>>>      do i=1,ntrac_movie
>>>>         call
>>>> write_data(real(tracnew(:,:,:,itrac_movie(i)),real4),trac_varID(i))
>>>>      enddo
>>>>      do i=1,ntpas_movie
>>>>         call
>>>> write_data(real(tpasnew(:,:,:,itpas_movie(i)),real4),tpas_varID(i))
>>>>      enddo
>>>>   endif
>>>>
>>>>   ! === close netCDF dataset: exit data mode & save -----------------!
>>>>   OP = 'close netCDF file'
>>>>   call handle_err(nfmpi_close(NCID))
>>>>
>>>>   if (myrank==0) then
>>>>      print *, ''
>>>>      print *, 'wrote netCDF output to file ', outfile
>>>>      print *, ''
>>>>   end if
>>>>
>>>>   contains
>>>>     !----------------------------------------------------------------
>>>>     subroutine write_data(array_in,varID)
>>>>       ! IF: array_in = data array (3D) to be written to netCDF
>>>>       !     varID    = data variable netCDF ID
>>>>
>>>>       use atham_module, only : iflgs ! topography mask: topography
>>>> (iflgs=0) remains undef
>>>>
>>>>       use atham_module, only  : myrank
>>>>
>>>>       real(real4),dimension(nx,ny,nz), intent (in   )   :: array_in
>>>>       integer(kint),                intent(in   )       :: varID
>>>>
>>>>       !--------------------------------------------------------------!
>>>>       ! local variables                                              !
>>>>       !--------------------------------------------------------------!
>>>>
>>>>       real(real4), dimension(nx,ny,nz)            :: array_masked
>>>>
>>>>       ! dimensions & bounds control
>>>>       integer(MPI_OFFSET_KIND)                    :: dimlenx,
>>>> dimleny, dimlenz, dimlent
>>>>       integer(kint), dimension(NF_max_var_dims)   :: dimIDs
>>>>
>>>>       ! dimensions & bounds control
>>>>       if (myrank == 0) then
>>>>          if (bounds_control) then
>>>>             print *, ''
>>>>             print *, 'atham var in xyz              ',shape(array_in)
>>>>             print *, 'atham var reshaped to xyzt
>>>> ',shape(reshape(array_in(2:nx-1,y_st:y_sp,1:nz),shape=(/nx-2,y_cl,nz,1/)))
>>>>
>>>>
>>>>             call handle_err(nfmpi_inq_vardimid(NCID, u_varID,
>>>> dimIDs)) ! taken unew as ref
>>>>             call handle_err(nfmpi_inq_dimlen(NCID, dimIDs(1), dimlenx))
>>>>             call handle_err(nfmpi_inq_dimlen(NCID, dimIDs(2), dimleny))
>>>>             call handle_err(nfmpi_inq_dimlen(NCID, dimIDs(3), dimlenz))
>>>>             call handle_err(nfmpi_inq_dimlen(NCID, dimIDs(4), dimlent))
>>>>             print *, 'netCDF var dimensions in xyzt
>>>> ',dimlenx,dimleny,dimlenz,dimlent
>>>>          end if
>>>>       end if
>>>>
>>>>       ! mask topography
>>>>       where (iflgs == 1)
>>>>          array_masked = array_in
>>>>       elsewhere
>>>>          array_masked = undef
>>>>       endwhere
>>>>
>>>>       ! mask control
>>>>       !print *, ''
>>>>       !print *, 'topography mask'
>>>>       !print *, iflgs(1:5,3,3)
>>>>       !print *, iflgs(1:5,3,2)
>>>>       !print *, iflgs(1:5,3,1)
>>>>       !print *, ''
>>>>       !print *, 'masked variable array'
>>>>       !print *, array_masked(:,3,3)
>>>>       !print *, array_masked(:,3,2)
>>>>       !print *, array_masked(:,3,1)
>>>>       !print *, ''
>>>>
>>>>       call handle_err(nfmpi_begin_indep_data(NCID))
>>>>       call handle_err(nfmpi_put_vara_real(NCID,
>>>> varID,(/istart,jstart,1_MPI_OFFSET_KIND,tcounter/), &
>>>>            (/nx_mpi,y_cl_mpi,nz_mpi,1_MPI_OFFSET_KIND/),
>>>> reshape(array_masked(2:nx-1,y_st:y_sp,1:nz),shape=(/nx-2,y_cl,nz,1/))
>>>> ),OP)
>>>>       call handle_err(nfmpi_end_indep_data(NCID))
>>>>
>>>>     end subroutine write_data
>>>>     ! ----------------------------------------------------------------
>>>> end subroutine netcdf_data
>>>> !=====================================================================
>>>> subroutine netcdf_define(outfile,out_type,timetot,ncid_def)
>>>>   ! IF: outfile = picture_file or movie_file (path/filename for
>>>> output created in atham_module)
>>>>   !     out_type = 1 (picture_file) or 2 (movie_file)
>>>>   !     timetot = simulation time since simulation start (from
>>>> atham/atham_out)
>>>>   !     ncid_def = netCDF ID assigned to file during creation
>>>>
>>>>   use atham_module, only   : var_tgas_picture,
>>>> var_tgas_movie,           &
>>>>                              des_tgas_picture,
>>>> des_tgas_movie,           &
>>>>                              var_trac_picture,
>>>> var_trac_movie,           &
>>>>                              des_trac_picture,
>>>> des_trac_movie,           &
>>>>                              var_tpas_picture,
>>>> var_tpas_movie,           &
>>>>                              des_tpas_picture, des_tpas_movie
>>>>
>>>>   use atham_module, only   : iindex, spinup, nrep, periodt
>>>>
>>>>   use atham_module, only   : volcano_setup,
>>>> coignimbrite_setup,          &
>>>>                              nuclear_setup, convection_setup,
>>>> procsconfig_setup
>>>>
>>>>   use atham_module, only   : x, y, z, xg, yg
>>>>
>>>>   use atham_module, only   : grid2geo, sim_d_YYYY, sim_d_MM,
>>>> sim_d_DD,   &
>>>>                              sim_t_hh, sim_t_mm, sim_t_ss
>>>>
>>>>   use atham_module, only   : my_cart, myrank
>>>>
>>>>   character(*),           intent(in   ) :: outfile
>>>>   integer(kint),          intent(in   ) :: out_type
>>>>   real(kreal),            intent(in   ) :: timetot
>>>>   integer(kint),          intent(  out) :: ncid_def
>>>>
>>>>   !------------------------------------------------------------------!
>>>>   ! local variables                                                  !
>>>>   !------------------------------------------------------------------!
>>>>   integer(MPI_OFFSET_KIND)              :: ntx_mpi,nty_mpi,nz_mpi
>>>>   character(len=50)                     :: OP  ! debugging variable
>>>> corresponding to the called netCDF OPeration
>>>>   integer(kint)                         :: NCID
>>>>   integer(kint)                         :: i
>>>>   character(len=50)                     :: var, des
>>>>   real(kreal)                           :: toffset
>>>>   real(real4)                           :: coord_scale,
>>>> coord_x_offset, coord_y_offset, coord_t_offset
>>>>   logical                               :: DynMovie_flag
>>>>   character(len=3)                      :: coord_x_name,
>>>> coord_y_name, coord_z_name
>>>>   character(len=4)                      :: coord_t_name
>>>>   character(len=9)                      :: coord_x_lname, coord_y_lname
>>>>   character(len=13)                     :: coord_x_units, coord_y_units
>>>>   character(len=33)                     :: coord_t_units
>>>>   character(len=8)                      :: date
>>>>   character(len=10)                     :: time
>>>>   character(len=19)                     :: simdatetime
>>>>   character(len=10)                     :: simdate
>>>>   character(len=20)                     :: login
>>>>   character(len=63)                     :: hist_string
>>>>   integer(kint)                         :: isetup
>>>>   character(len=12)                     :: model_setup(6)
>>>>   data model_setup /'volcano     ', 'coignimbrite', 'nuclear     ',
>>>> 'convection  ', 'procsconfig ','unknown     '/
>>>>
>>>>   ! replace DynMovie precompiler flag by program flag for more
>>>> convenient code structure
>>>>   DynMovie_flag = .false.
>>>> #ifdef DynMovie
>>>>   DynMovie_flag = .true.
>>>> #endif
>>>>
>>>>   ! re-assign dimension lengths as an MPI_Offset type (necessary for
>>>> the PnetCDF interface)
>>>>   ! cut-off domain borders
>>>>   ntx_mpi = ntx-2
>>>>   nty_mpi = nty-2
>>>>   nz_mpi  = nz
>>>>
>>>>   ! convert date and time integers into string 'YYYYMMDD hh:mm:ss'
>>>>   write (simdatetime,10)
>>>> sim_d_YYYY,sim_d_MM,sim_d_DD,sim_t_hh,sim_t_mm,sim_t_ss
>>>> 10 format (I4,'-',I2,'-',I2,1X,I2,':',I2,':',I2)
>>>>   simdate = simdatetime(1:10)
>>>>
>>>>   ! switch between cartesian axes/time (default) and geographic
>>>> axes/date (linear approx)
>>>>   coord_scale    = 1._real4
>>>>   coord_x_offset = 0._real4
>>>>   coord_x_name   = 'x  '
>>>>   coord_x_lname  = 'x_coor   '
>>>>   coord_x_units  = 'm            '
>>>>   coord_y_offset = 0._real4
>>>>   coord_y_name   = 'y  '
>>>>   coord_y_lname  = 'y_coor   '
>>>>   coord_y_units  = 'm            '
>>>>   coord_z_name   = 'z  '
>>>>   coord_t_offset = 0._real4
>>>>   coord_t_name   = 'time'
>>>>   coord_t_units  = 'sec                              '
>>>>   if (grid2geo) then
>>>>      call
>>>> gridconvert(coord_scale,coord_x_offset,coord_x_name,coord_x_lname,coord_x_units,
>>>>
>>>> &
>>>>
>>>> coord_y_offset,coord_y_name,coord_y_lname,coord_y_units, &
>>>>
>>>> coord_z_name,coord_t_offset,coord_t_name,coord_t_units)
>>>>   end if
>>>>
>>>>   ! === create netCDF dataset: enter define mode --------------------!
>>>>
>>>>   OP = 'enter define mode'
>>>>   call handle_err(nfmpi_create(my_cart, trim(outfile), 0,
>>>> MPI_INFO_NULL,NCID),OP)
>>>>   ncid_def = NCID
>>>>
>>>>   ! === create netCDF dataset: assign metadata ----------------------!
>>>>
>>>>   ! ---                        set global attributes ----------------!
>>>>   OP = 'set global attributes'
>>>>   if (out_type == 1) then
>>>>      toffset = timetot - spinup
>>>>      call handle_err(nfmpi_put_att_text(NCID, NF_GLOBAL, 'title',
>>>> 13_MPI_OFFSET_KIND, 'atham_picture'),OP)
>>>>   else
>>>>      toffset = timetot - spinup - nrep*periodt
>>>>      call handle_err(nfmpi_put_att_text(NCID, NF_GLOBAL, 'title',
>>>> 11_MPI_OFFSET_KIND, 'atham_movie'),OP)
>>>>   end if
>>>>   call handle_err(nfmpi_put_att_text(NCID, NF_GLOBAL, 'content',
>>>> 223_MPI_OFFSET_KIND, &
>>>>        'This data corresponds to a simulation run of the
>>>> mesoscale-beta/gamma type non-hydrostatic Active Tracer
>>>> High-resolution Atmospheric Model ATHAM ' &
>>>>        // '(Oberhuber et al., 1998, Herzog, 1998), for a setup as
>>>> specified under history'),OP) ! ######### add further description as
>>>> necessary
>>>>   call handle_err(nfmpi_put_att_text(NCID, NF_GLOBAL, 'version',
>>>> 21_MPI_OFFSET_KIND, 'no current versioning'),OP) ! ######### change
>>>> once available
>>>>
>>>>   call date_and_time(date, time)
>>>>   call getlog(login)
>>>>   if (volcano_setup) then
>>>>      isetup=1
>>>>   else if (coignimbrite_setup) then
>>>>      isetup=2
>>>>   else if (nuclear_setup) then
>>>>      isetup=3
>>>>   else if (convection_setup) then
>>>>      isetup=4
>>>>   else if (procsconfig_setup) then
>>>>      isetup=5
>>>>   else
>>>>      isetup=6
>>>>   end if
>>>>   hist_string = trim(date//' '//time//'  '//trim(login)//'  atham
>>>> '//model_setup(isetup))
>>>>
>>>> !    call handle_err(nfmpi_put_att_text(NCID, NF_GLOBAL, 'history',
>>>> 63_MPI_OFFSET_KIND, hist_string),OP) ! 1 line/modification:  - cmd arg
>>>> !    call handle_err(nfmpi_put_att_text(NCID, NF_GLOBAL,
>>>> 'Conventions', 28_MPI_OFFSET_KIND, 'COARDS, //cf-pcmdi.llnl.gov/'),OP)
>>>>
>>>> !    call handle_err(nfmpi_put_att_text(NCID, NF_GLOBAL,
>>>> 'sim_onset_date_time', 19_MPI_OFFSET_KIND, simdatetime),OP)
>>>> !    call handle_err(nfmpi_put_att_real(NCID, NF_GLOBAL,
>>>> 'sim_time_offset', NF_FLOAT, 1_MPI_OFFSET_KIND,
>>>> real(toffset,real4)),OP)
>>>> !    call handle_err(nfmpi_put_att_real(NCID, NF_GLOBAL,
>>>> 'x_zoom_location', NF_FLOAT, 1_MPI_OFFSET_KIND,
>>>> real(x(max(1,iindex)),real4)),OP)
>>>>
>>>>   ! ---                        define dimensions --------------------!
>>>>   OP = 'define dimensions'
>>>>   call handle_err(nfmpi_def_dim(NCID, trim(coord_x_name),
>>>> ntx_mpi,             x_dimID),OP)
>>>>   if (nty>4) then
>>>>      call handle_err(nfmpi_def_dim(NCID, trim(coord_y_name),
>>>> nty_mpi,             y_dimID),OP)
>>>>   else
>>>>      call handle_err(nfmpi_def_dim(NCID, trim(coord_y_name),
>>>> 1_MPI_OFFSET_KIND,   y_dimID),OP)
>>>>   end if
>>>>   call handle_err(nfmpi_def_dim(NCID, trim(coord_z_name),
>>>> nz_mpi,              z_dimID),OP)
>>>>   call handle_err(nfmpi_def_dim(NCID, coord_t_name,
>>>> nfmpi_unlimited,     t_dimID),OP)
>>>>
>>>>   ! ---                        define variables ---------------------!
>>>>   ! dimensions
>>>>   OP = 'define variables - dimensions'
>>>>   call handle_err(nfmpi_def_var(NCID, trim(coord_x_name),
>>>> NF_FLOAT, 1, x_dimID, x_varID),OP)
>>>>   call handle_err(nfmpi_def_var(NCID, trim(coord_y_name),
>>>> NF_FLOAT, 1, y_dimID, y_varID),OP)
>>>>   call handle_err(nfmpi_def_var(NCID, trim(coord_z_name),
>>>> NF_FLOAT, 1, z_dimID, z_varID),OP)
>>>>   call handle_err(nfmpi_def_var(NCID, coord_t_name,
>>>> NF_FLOAT, 1, t_dimID, t_varID),OP)
>>>>
>>>>   ! dynamics data
>>>>   OP = 'define variables - data'
>>>>   if (out_type == 1 .OR. DynMovie_flag == .true.) then
>>>>      call handle_err(nfmpi_def_var(NCID, 'u',       NF_FLOAT, 4,
>>>> (/x_dimID,y_dimID,z_dimID,t_dimID/), u_varID),OP)
>>>>      call handle_err(nfmpi_def_var(NCID, 'v',       NF_FLOAT, 4,
>>>> (/x_dimID,y_dimID,z_dimID,t_dimID/), v_varID),OP)
>>>>      call handle_err(nfmpi_def_var(NCID, 'w',       NF_FLOAT, 4,
>>>> (/x_dimID,y_dimID,z_dimID,t_dimID/), w_varID),OP)
>>>>      call handle_err(nfmpi_def_var(NCID, 'pnew',    NF_FLOAT, 4,
>>>> (/x_dimID,y_dimID,z_dimID,t_dimID/), pnew_varID),OP)
>>>>      call handle_err(nfmpi_def_var(NCID, 'tetnew',  NF_FLOAT, 4,
>>>> (/x_dimID,y_dimID,z_dimID,t_dimID/), tetnew_varID),OP)
>>>>      call handle_err(nfmpi_def_var(NCID, 'tempnew', NF_FLOAT, 4,
>>>> (/x_dimID,y_dimID,z_dimID,t_dimID/), tempnew_varID),OP)
>>>>      call handle_err(nfmpi_def_var(NCID, 'density', NF_FLOAT, 4,
>>>> (/x_dimID,y_dimID,z_dimID,t_dimID/), density_varID),OP)
>>>>      call handle_err(nfmpi_def_var(NCID, 'turbhor', NF_FLOAT, 4,
>>>> (/x_dimID,y_dimID,z_dimID,t_dimID/), turbhor_varID),OP)
>>>>      call handle_err(nfmpi_def_var(NCID, 'turbver', NF_FLOAT, 4,
>>>> (/x_dimID,y_dimID,z_dimID,t_dimID/), turbver_varID),OP)
>>>>      call handle_err(nfmpi_def_var(NCID, 'turblen', NF_FLOAT, 4,
>>>> (/x_dimID,y_dimID,z_dimID,t_dimID/), turblen_varID),OP)
>>>>   end if
>>>>
>>>>   ! tracer data
>>>>   if (out_type == 1) then
>>>>      do i=1,ntgas_picture
>>>>         call handle_err(nfmpi_def_var(NCID, var_tgas_picture(i),
>>>> NF_FLOAT, 4, (/x_dimID,y_dimID,z_dimID,t_dimID/), tgas_varID(i)),OP)
>>>>      enddo
>>>>      do i=1,ntrac_picture
>>>>         call handle_err(nfmpi_def_var(NCID, var_trac_picture(i),
>>>> NF_FLOAT, 4, (/x_dimID,y_dimID,z_dimID,t_dimID/), trac_varID(i)),OP)
>>>>      enddo
>>>>      do i=1,ntpas_picture
>>>>         call handle_err(nfmpi_def_var(NCID, var_tpas_picture(i),
>>>> NF_FLOAT, 4, (/x_dimID,y_dimID,z_dimID,t_dimID/), tpas_varID(i)),OP)
>>>>      enddo
>>>>      do i=1,ntrac_picture
>>>>         var='d_'//trim(var_trac_picture(i))
>>>>         call handle_err(nfmpi_def_var(NCID, var,
>>>> NF_FLOAT, 3, (/x_dimID,y_dimID,t_dimID/), d_trac_varID(i)),OP)
>>>>      enddo
>>>>   else if (out_type == 2) then
>>>>      do i=1,ntgas_movie
>>>>         call handle_err(nfmpi_def_var(NCID, var_tgas_movie(i),
>>>> NF_FLOAT, 4, (/x_dimID,y_dimID,z_dimID,t_dimID/), tgas_varID(i)),OP)
>>>>      enddo
>>>>      do i=1,ntrac_movie
>>>>         call handle_err(nfmpi_def_var(NCID, var_trac_movie(i),
>>>> NF_FLOAT, 4, (/x_dimID,y_dimID,z_dimID,t_dimID/), trac_varID(i)),OP)
>>>>      enddo
>>>>      do i=1,ntpas_movie
>>>>         call handle_err(nfmpi_def_var(NCID, var_tpas_movie(i),
>>>> NF_FLOAT, 4, (/x_dimID,y_dimID,z_dimID,t_dimID/), tpas_varID(i)),OP)
>>>>      enddo
>>>>   endif
>>>>
>>>>   ! ---                        assign attributes --------------------!
>>>>   ! common attributes: long_name, units, valid_range, scale_factor,
>>>> add_offset, _FillValue, history, conventions
>>>>   ! dimensions
>>>>
>>>>   OP = 'assign attributes - dimensions'
>>>>   call handle_err(nfmpi_put_att_text(NCID, x_varID,
>>>> 'long_name',               9_MPI_OFFSET_KIND, trim(coord_x_lname)),OP)
>>>>   call handle_err(nfmpi_put_att_text(NCID, x_varID,
>>>> 'units',                  13_MPI_OFFSET_KIND, trim(coord_x_units)),OP)
>>>> !    call handle_err(nfmpi_put_att_real(NCID, x_varID,
>>>> 'scale_factor', NF_FLOAT,  1_MPI_OFFSET_KIND, coord_scale),OP)
>>>> !    call handle_err(nfmpi_put_att_real(NCID, x_varID,
>>>> 'add_offset',   NF_FLOAT,  1_MPI_OFFSET_KIND, coord_x_offset),OP)
>>>>
>>>>   call handle_err(nfmpi_put_att_text(NCID, y_varID,
>>>> 'long_name',               9_MPI_OFFSET_KIND, trim(coord_y_lname)),OP)
>>>>   call handle_err(nfmpi_put_att_text(NCID, y_varID,
>>>> 'units',                  13_MPI_OFFSET_KIND, trim(coord_y_units)),OP)
>>>> !    call handle_err(nfmpi_put_att_real(NCID, y_varID,
>>>> 'scale_factor', NF_FLOAT,  1_MPI_OFFSET_KIND, coord_scale),OP)
>>>> !    call handle_err(nfmpi_put_att_real(NCID, y_varID,
>>>> 'add_offset',   NF_FLOAT,  1_MPI_OFFSET_KIND, coord_y_offset),OP)
>>>>
>>>>   call handle_err(nfmpi_put_att_text(NCID, z_varID,
>>>> 'long_name',               6_MPI_OFFSET_KIND, 'height'),OP)
>>>>   call handle_err(nfmpi_put_att_text(NCID, z_varID,
>>>> 'units',                   1_MPI_OFFSET_KIND, 'm'),OP)
>>>> !    call handle_err(nfmpi_put_att_text(NCID, z_varID,
>>>> 'positive',                2_MPI_OFFSET_KIND, 'up'),OP)
>>>>
>>>>   call handle_err(nfmpi_put_att_text(NCID, t_varID,
>>>> 'long_name',               4_MPI_OFFSET_KIND, coord_t_name),OP)
>>>>   call handle_err(nfmpi_put_att_text(NCID, t_varID,
>>>> 'units',                  33_MPI_OFFSET_KIND, trim(coord_t_units)),OP)
>>>> !    call handle_err(nfmpi_put_att_real(NCID, t_varID,
>>>> 'add_offset',   NF_FLOAT,  1_MPI_OFFSET_KIND, coord_t_offset),OP)
>>>>
>>>> !    OP = 'exit define mode NOW for testing
>>>> ****************************************************' ! ah_testing
>>>> ********************************
>>>> !    call
>>>> handle_err(nfmpi_enddef(NCID),OP)
>>>> ! ah_testing ********************************
>>>>
>>>>   ! dynamics data
>>>>   OP = 'assign attributes - data'
>>>>   if (out_type == 1 .OR. DynMovie_flag == .true.) then
>>>> !       call handle_err(nfmpi_put_att_text(NCID, u_varID,
>>>> 'long_name',              6_MPI_OFFSET_KIND, 'x_wind'),OP)
>>>> !       call handle_err(nfmpi_put_att_text(NCID, u_varID,
>>>> 'units',                  7_MPI_OFFSET_KIND, 'm sec-1'),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, u_varID,
>>>> 'scale_factor',NF_FLOAT,  1_MPI_OFFSET_KIND, 1.),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, u_varID,
>>>> 'add_offset',  NF_FLOAT,  1_MPI_OFFSET_KIND, 0.0),OP)
>>>>      call handle_err(nfmpi_put_att_real(NCID, u_varID,
>>>> '_FillValue',  NF_FLOAT,  1_MPI_OFFSET_KIND, undef),OP)
>>>>
>>>> !       call handle_err(nfmpi_put_att_text(NCID, v_varID,
>>>> 'long_name',              6_MPI_OFFSET_KIND, 'y_wind'),OP)
>>>> !       call handle_err(nfmpi_put_att_text(NCID, v_varID,
>>>> 'units',                  7_MPI_OFFSET_KIND, 'm sec-1'),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, v_varID,
>>>> 'scale_factor',NF_FLOAT,  1_MPI_OFFSET_KIND, 1.),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, v_varID,
>>>> 'add_offset',  NF_FLOAT,  1_MPI_OFFSET_KIND, 0.0),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, v_varID,
>>>> '_FillValue',  NF_FLOAT,  1_MPI_OFFSET_KIND, undef),OP)
>>>>
>>>> !       call handle_err(nfmpi_put_att_text(NCID, w_varID,
>>>> 'long_name',             19_MPI_OFFSET_KIND, 'upward_air_velocity'),OP)
>>>> !       call handle_err(nfmpi_put_att_text(NCID, w_varID,
>>>> 'units',                  7_MPI_OFFSET_KIND, 'm sec-1'),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, w_varID,
>>>> 'scale_factor',NF_FLOAT,  1_MPI_OFFSET_KIND, 1.),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, w_varID,
>>>> 'add_offset',  NF_FLOAT,  1_MPI_OFFSET_KIND, 0.0),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, w_varID,
>>>> '_FillValue',  NF_FLOAT,  1_MPI_OFFSET_KIND, undef),OP)
>>>>
>>>> !       call handle_err(nfmpi_put_att_text(NCID, pnew_varID,
>>>> 'long_name',             20_MPI_OFFSET_KIND,
>>>> 'air_pressure_anomaly'),OP)
>>>> !       call handle_err(nfmpi_put_att_text(NCID, pnew_varID,
>>>> 'units',                  2_MPI_OFFSET_KIND, 'Pa'),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, pnew_varID,
>>>> 'scale_factor',NF_FLOAT,  1_MPI_OFFSET_KIND, 1.),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, pnew_varID,
>>>> 'add_offset',  NF_FLOAT,  1_MPI_OFFSET_KIND, 0.0),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, pnew_varID,
>>>> '_FillValue',  NF_FLOAT,  1_MPI_OFFSET_KIND, undef),OP)
>>>>
>>>> !       call handle_err(nfmpi_put_att_text(NCID, tetnew_varID,
>>>> 'long_name',             25_MPI_OFFSET_KIND,
>>>> 'air_potential_temperature'),OP)
>>>> !       call handle_err(nfmpi_put_att_text(NCID, tetnew_varID,
>>>> 'units',                  1_MPI_OFFSET_KIND, 'K'),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, tetnew_varID,
>>>> 'scale_factor',NF_FLOAT,  1_MPI_OFFSET_KIND, 1.),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, tetnew_varID,
>>>> 'add_offset',  NF_FLOAT,  1_MPI_OFFSET_KIND, 0.0),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, tetnew_varID,
>>>> '_FillValue',  NF_FLOAT,  1_MPI_OFFSET_KIND, undef),OP)
>>>>
>>>> !       call handle_err(nfmpi_put_att_text(NCID, tempnew_varID,
>>>> 'long_name',             15_MPI_OFFSET_KIND, 'air_temperature'),OP)
>>>> !       call handle_err(nfmpi_put_att_text(NCID, tempnew_varID,
>>>> 'units',                  7_MPI_OFFSET_KIND, 'Celsius'),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, tempnew_varID,
>>>> 'scale_factor',NF_FLOAT,  1_MPI_OFFSET_KIND, 1.),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, tempnew_varID,
>>>> 'add_offset',  NF_FLOAT,  1_MPI_OFFSET_KIND, -273.15),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, tempnew_varID,
>>>> '_FillValue',  NF_FLOAT,  1_MPI_OFFSET_KIND, undef),OP)
>>>>
>>>> !       call handle_err(nfmpi_put_att_text(NCID, density_varID,
>>>> 'long_name',             11_MPI_OFFSET_KIND, 'air_density'),OP)
>>>> !       call handle_err(nfmpi_put_att_text(NCID, density_varID,
>>>> 'units',                  6_MPI_OFFSET_KIND, 'kg m-3'),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, density_varID,
>>>> 'scale_factor',NF_FLOAT,  1_MPI_OFFSET_KIND, 1.),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, density_varID,
>>>> 'add_offset',  NF_FLOAT,  1_MPI_OFFSET_KIND, 0.0),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, density_varID,
>>>> '_FillValue',  NF_FLOAT,  1_MPI_OFFSET_KIND, undef),OP)
>>>>
>>>> !       call handle_err(nfmpi_put_att_text(NCID, turbhor_varID,
>>>> 'long_name',             15_MPI_OFFSET_KIND, 'hor_turb_energy'),OP)
>>>> !       call handle_err(nfmpi_put_att_text(NCID, turbhor_varID,
>>>> 'units',                  8_MPI_OFFSET_KIND, 'm2 sec-2'),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, turbhor_varID,
>>>> 'scale_factor',NF_FLOAT,  1_MPI_OFFSET_KIND, 1.),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, turbhor_varID,
>>>> 'add_offset',  NF_FLOAT,  1_MPI_OFFSET_KIND, 0.0),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, turbhor_varID,
>>>> '_FillValue',  NF_FLOAT,  1_MPI_OFFSET_KIND, undef),OP)
>>>>
>>>> !       call handle_err(nfmpi_put_att_text(NCID, turbver_varID,
>>>> 'long_name',             15_MPI_OFFSET_KIND, 'ver_turb_energy'),OP)
>>>> !       call handle_err(nfmpi_put_att_text(NCID, turbver_varID,
>>>> 'units',                  8_MPI_OFFSET_KIND, 'm2 sec-2'),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, turbver_varID,
>>>> 'scale_factor',NF_FLOAT,  1_MPI_OFFSET_KIND, 1.),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, turbver_varID,
>>>> 'add_offset',  NF_FLOAT,  1_MPI_OFFSET_KIND, 0.0),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, turbver_varID,
>>>> '_FillValue',  NF_FLOAT,  1_MPI_OFFSET_KIND, undef),OP)
>>>>
>>>> !       call handle_err(nfmpi_put_att_text(NCID, turblen_varID,
>>>> 'long_name',             17_MPI_OFFSET_KIND, 'turb_length_scale'),OP)
>>>> !       call handle_err(nfmpi_put_att_text(NCID, turblen_varID,
>>>> 'units',                  1_MPI_OFFSET_KIND, 'm'),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, turblen_varID,
>>>> 'scale_factor',NF_FLOAT,  1_MPI_OFFSET_KIND, 1.),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, turblen_varID,
>>>> 'add_offset',  NF_FLOAT,  1_MPI_OFFSET_KIND, 0.0),OP)
>>>> !       call handle_err(nfmpi_put_att_real(NCID, turblen_varID,
>>>> '_FillValue',  NF_FLOAT,  1_MPI_OFFSET_KIND, undef),OP)
>>>>   end if
>>>>
>>>>   ! tracer data
>>>>   if (out_type == 1) then
>>>>      print *, 'NetCDF output type (1-picture,2-movie) ',out_type !
>>>> #####  DO NOT REMOVE!!! optimization problem, trace source
>>>>      do i=1,ntgas_picture
>>>>         call handle_err(nfmpi_put_att_text(NCID, tgas_varID(i),
>>>> 'long_name',             25_MPI_OFFSET_KIND, des_tgas_picture(i)),OP)
>>>>         call handle_err(nfmpi_put_att_text(NCID, tgas_varID(i),
>>>> 'units',                  9_MPI_OFFSET_KIND, 'gram kg-1'),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, tgas_varID(i),
>>>> 'scale_factor',NF_FLOAT,  1_MPI_OFFSET_KIND, 1000.),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, tgas_varID(i),
>>>> 'add_offset',  NF_FLOAT,  1_MPI_OFFSET_KIND, 0.0),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, tgas_varID(i),
>>>> '_FillValue',  NF_FLOAT,  1_MPI_OFFSET_KIND, undef),OP)
>>>>      enddo
>>>>      do i=1,ntrac_picture
>>>>         call handle_err(nfmpi_put_att_text(NCID, trac_varID(i),
>>>> 'long_name',             25_MPI_OFFSET_KIND, des_trac_picture(i)),OP)
>>>>         call handle_err(nfmpi_put_att_text(NCID, trac_varID(i),
>>>> 'units',                  9_MPI_OFFSET_KIND, 'gram kg-1'),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, trac_varID(i),
>>>> 'scale_factor',NF_FLOAT,  1_MPI_OFFSET_KIND, 1000.),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, trac_varID(i),
>>>> 'add_offset',  NF_FLOAT,  1_MPI_OFFSET_KIND, 0.0),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, trac_varID(i),
>>>> '_FillValue',  NF_FLOAT,  1_MPI_OFFSET_KIND, undef),OP)
>>>>      enddo
>>>>      do i=1,ntpas_picture
>>>>         call handle_err(nfmpi_put_att_text(NCID, tpas_varID(i),
>>>> 'long_name',             25_MPI_OFFSET_KIND, des_tpas_picture(i)),OP)
>>>>         call handle_err(nfmpi_put_att_text(NCID, tpas_varID(i),
>>>> 'units',                  1_MPI_OFFSET_KIND, '%'),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, tpas_varID(i),
>>>> 'scale_factor',NF_FLOAT,  1_MPI_OFFSET_KIND, 100.),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, tpas_varID(i),
>>>> 'add_offset',  NF_FLOAT,  1_MPI_OFFSET_KIND, 0.0),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, tpas_varID(i),
>>>> '_FillValue',  NF_FLOAT,  1_MPI_OFFSET_KIND, undef),OP)
>>>>      enddo
>>>>      do i=1,ntrac_picture
>>>>         des='deposited_'//trim(des_trac_picture(i))
>>>>         call handle_err(nfmpi_put_att_text(NCID, d_trac_varID(i),
>>>> 'long_name',             35_MPI_OFFSET_KIND, des),OP)
>>>>         call handle_err(nfmpi_put_att_text(NCID, d_trac_varID(i),
>>>> 'units',                  9_MPI_OFFSET_KIND, 'gram m-2'),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, d_trac_varID(i),
>>>> 'scale_factor',NF_FLOAT,  1_MPI_OFFSET_KIND, 1000.),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, d_trac_varID(i),
>>>> 'add_offset',  NF_FLOAT,  1_MPI_OFFSET_KIND, 0.0),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, d_trac_varID(i),
>>>> '_FillValue',  NF_FLOAT,  1_MPI_OFFSET_KIND, undef),OP)
>>>>      enddo
>>>>   else if (out_type == 2) then
>>>>      print *, 'NetCDF output type (1-picture,2-movie) ',out_type !
>>>> #####  DO NOT REMOVE!!! optimization problem, trace source
>>>>      do i=1,ntgas_movie
>>>>         call handle_err(nfmpi_put_att_text(NCID, tgas_varID(i),
>>>> 'long_name',             25_MPI_OFFSET_KIND, des_tgas_movie(i)),OP)
>>>>         call handle_err(nfmpi_put_att_text(NCID, tgas_varID(i),
>>>> 'units',                  9_MPI_OFFSET_KIND, 'gram kg-1'),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, tgas_varID(i),
>>>> 'scale_factor',NF_FLOAT,  1_MPI_OFFSET_KIND, 1000.),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, tgas_varID(i),
>>>> 'add_offset',  NF_FLOAT,  1_MPI_OFFSET_KIND, 0.0),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, tgas_varID(i),
>>>> '_FillValue',  NF_FLOAT,  1_MPI_OFFSET_KIND, undef),OP)
>>>>      enddo
>>>>      do i=1,ntrac_movie
>>>>         call handle_err(nfmpi_put_att_text(NCID, trac_varID(i),
>>>> 'long_name',             25_MPI_OFFSET_KIND, des_trac_movie(i)),OP)
>>>>         call handle_err(nfmpi_put_att_text(NCID, trac_varID(i),
>>>> 'units',                  9_MPI_OFFSET_KIND, 'gram kg-1'),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, trac_varID(i),
>>>> 'scale_factor',NF_FLOAT,  1_MPI_OFFSET_KIND, 1000.),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, trac_varID(i),
>>>> 'add_offset',  NF_FLOAT,  1_MPI_OFFSET_KIND, 0.0),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, trac_varID(i),
>>>> '_FillValue',  NF_FLOAT,  1_MPI_OFFSET_KIND, undef),OP)
>>>>      enddo
>>>>      do i=1,ntpas_movie
>>>>         call handle_err(nfmpi_put_att_text(NCID, tpas_varID(i),
>>>> 'long_name',             25_MPI_OFFSET_KIND, des_tpas_movie(i)),OP)
>>>>         call handle_err(nfmpi_put_att_text(NCID, tpas_varID(i),
>>>> 'units',                  1_MPI_OFFSET_KIND, '%'),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, tpas_varID(i),
>>>> 'scale_factor',NF_FLOAT,  1_MPI_OFFSET_KIND, 100.),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, tpas_varID(i),
>>>> 'add_offset',  NF_FLOAT,  1_MPI_OFFSET_KIND, 0.0),OP)
>>>>         call handle_err(nfmpi_put_att_real(NCID, tpas_varID(i),
>>>> '_FillValue',  NF_FLOAT,  1_MPI_OFFSET_KIND, undef),OP)
>>>>      enddo
>>>>   end if
>>>>
>>>>   ! === create netCDF dataset: exit define mode, enter data mode ----!
>>>>   OP = 'exit define mode'
>>>>   call handle_err(nfmpi_enddef(NCID),OP)
>>>>
>>>>   ! ---                        write data values --------------------!
>>>>   ! dimensions (only one process writes the whole dimension, i.e.
>>>> accross all processes)
>>>>   OP = 'write data values - dimensions'
>>>>
>>>>   call handle_err(nfmpi_begin_indep_data(NCID))
>>>>
>>>>   if (myrank==0) then
>>>>      call handle_err(nfmpi_put_vara_real(NCID, x_varID,
>>>> (/1_MPI_OFFSET_KIND/), (/ntx_mpi/),real(xg(2:ntx-1),real4)),OP)
>>>>      if (nty>4) then
>>>>         call handle_err(nfmpi_put_vara_real(NCID, y_varID,
>>>> (/1_MPI_OFFSET_KIND/), (/nty_mpi/), real(yg(2:nty-1),real4)),OP)
>>>>      else
>>>>         call handle_err(nfmpi_put_vara_real(NCID, y_varID,
>>>> (/1_MPI_OFFSET_KIND/), (/1_MPI_OFFSET_KIND/),
>>>> real(yg(nty-1),real4)),OP)
>>>>      end if
>>>>      call handle_err(nfmpi_put_vara_real(NCID, z_varID,
>>>> (/1_MPI_OFFSET_KIND/), (/nz_mpi/), real(z,real4)),OP)
>>>>   end if
>>>>
>>>>   call handle_err(nfmpi_end_indep_data(NCID))
>>>>
>>>>   contains
>>>>     ! ----------------------------------------------------------------
>>>>     subroutine
>>>> gridconvert(cd_scale,cd_x_offset,cd_x_name,cd_x_lname,cd_x_units, &
>>>>
>>>> cd_y_offset,cd_y_name,cd_y_lname,cd_y_units, &
>>>>
>>>> cd_z_name,cd_t_offset,cd_t_name,cd_t_units)
>>>>       ! IF: cd_* = coordinate parameters
>>>>
>>>>       !--------------------------------------------------------------!
>>>>       ! linear conversion from cartesian grid into lon/lat system    !
>>>>       ! only valid as first approxiamtion over small domains         !
>>>>       ! to be replaced once a dyn core in a lat/lon system available !
>>>>       !--------------------------------------------------------------!
>>>>
>>>>       use atham_module, only             : deglat_start, deglon_start
>>>>
>>>>       use phys_constants, only           : pi
>>>>
>>>>       real(real4),        intent(inout) :: cd_scale, cd_x_offset,
>>>> cd_y_offset, cd_t_offset
>>>>       character(len=3),   intent(inout) :: cd_x_name, cd_y_name,
>>>> cd_z_name
>>>>       character(len=4),   intent(inout) :: cd_t_name
>>>>       character(len=9),   intent(inout) :: cd_x_lname, cd_y_lname
>>>>       character(len=13),  intent(inout) :: cd_x_units, cd_y_units
>>>>       character(len=33),  intent(inout) :: cd_t_units
>>>>
>>>>       !--------------------------------------------------------------!
>>>>       ! local variables                                              !
>>>>       !--------------------------------------------------------------!
>>>>
>>>>       real(kreal)                       :: r
>>>>       real(kreal), parameter            :: a = 6378137._kreal     !
>>>> (WGS 84)
>>>>       real(kreal), parameter            :: b = 6356752.3142_kreal !
>>>> (WGS 84)
>>>>
>>>>       ! ellipsoid radius at ATHAM domain start
>>>>       r = a*b / sqrt((b*b*(cos(deglat_start*pi/180._kreal))**2
>>>> )+(a*a*(sin(deglat_start*pi/180._kreal))**2 ))
>>>>
>>>>       cd_scale    = real((1/r) * (180._kreal/pi),real4)
>>>>
>>>>       cd_x_offset = deglon_start
>>>>       cd_x_name   = 'lon'
>>>>       cd_x_lname  = 'longitude'
>>>>       cd_x_units  = 'degrees_east '
>>>>
>>>>       cd_y_offset = deglat_start
>>>>       cd_y_name   = 'lat'
>>>>       cd_y_lname  = 'latitude '
>>>>       cd_y_units  = 'degrees_north'
>>>>
>>>>       cd_z_name   = 'lev'
>>>>
>>>>       coord_t_offset = real((sim_t_hh*3600 + sim_t_mm*60
>>>> +sim_t_ss),real4)
>>>>       coord_t_name   = 'date'
>>>>       coord_t_units  = 'seconds since '//simdate//' 00:00:00 [local]'
>>>>       ! COARDS conventions require time zone from UTC to be specified
>>>>       ! not necessary for local area version of ATHAM
>>>>
>>>>     end subroutine gridconvert
>>>>     ! ----------------------------------------------------------------
>>>>
>>>> end subroutine netcdf_define
>>>> !=====================================================================
>>>>
>>>> !
>>>> ======================================================================
>>>> subroutine handle_err(status,op)
>>>>
>>>> use atham_module, only : myrank
>>>>
>>>> integer,                    intent (in   ) :: status
>>>> character(len=*), optional, intent (in   ) :: op
>>>>
>>>> if ( status /= nf_noerr ) then
>>>>    if (myrank==0) then
>>>>       print *, ""
>>>>       print *, "P-NetCDF operation: ",trim(op)
>>>>       print *, trim(nfmpi_strerror(status))
>>>>       print *, "atham_pnetcdf error: program execution stopped"
>>>>       print *, ""
>>>>
>>>>       stop
>>>>    end if
>>>> end if
>>>>
>>>> return
>>>>
>>>> end subroutine handle_err
>>>> !
>>>> ==============================================================================
>>>>
>>>>
>>>>
>>>> end module atham_pnetcdf
>>>
>>
> 
> 

-- 
______________________________________________________________________

Alex HOFFMANN                     PhD Candidate
Centre for Atmospheric Science
Department of Geography           University of Cambridge
Downing Place, Cambridge CB2 3EN, UK
e-mail: ah519 at cam.ac.uk  tel: +44 (0)1223 766581
www.geog.cam.ac.uk/people/hoffmann/
______________________________________________________________________


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