source: palm/trunk/SOURCE/palm.f90 @ 63

 PROGRAM palm

!------------------------------------------------------------------------------!
! Actual revisions:
! -----------------
! __vtk directives removed, open unit 9 for debug output
!
! Former revisions:
! -----------------
! $Id: palm.f90 57 2007-03-09 12:05:41Z raasch $
! RCS Log replace by Id keyword, revision history cleaned up
!
! Revision 1.10  2006/08/04 14:53:12  raasch
! Distibution of run description header removed, call of header moved behind
! init_3d_model
!
! Revision 1.2  2001/01/25 07:15:06  raasch
! Program name changed to PALM, module test_variables removed.
! Initialization of dvrp logging as well as exit of dvrp moved to new
! subroutines init_dvrp_logging and close_dvrp (file init_dvrp.f90)
!
! Revision 1.1  1997/07/24 11:23:35  raasch
! Initial revision
!
!
! Description:
! ------------
! Large-Eddy Simulation (LES) model for the convective boundary layer, 
! optimized for use on parallel machines (implementation realized using the
! Message Passing Interface (MPI)). The model can also be run on vector machines
! (less well optimized) and workstations. Versions for the different types of 
! machines are controlled via cpp-directives.
! Model runs are only feasible using the ksh-script mrun.
!------------------------------------------------------------------------------!


    USE arrays_3d
    USE constants
    USE cpulog
    USE dvrp_variables
    USE grid_variables
    USE indices
    USE interfaces
    USE model_1d
    USE particle_attributes
    USE pegrid
    USE spectrum
    USE statistics
    USE control_parameters

    IMPLICIT NONE

!
!-- Local variables
    CHARACTER (LEN=9) ::  time_to_string
    CHARACTER (LEN=1) ::  cdum
    INTEGER           ::  i, run_description_header_i(80)

#if defined( __parallel )
!
!-- MPI initialisation. comm2d is preliminary set, because
!-- it will be defined in init_pegrid but is used before in cpu_log.
    CALL MPI_INIT( ierr )
    CALL MPI_COMM_SIZE( MPI_COMM_WORLD, numprocs, ierr )
    comm_palm = MPI_COMM_WORLD
    comm2d    = MPI_COMM_WORLD
#endif

!
!-- Initialize measuring of the CPU-time remaining to the run
    CALL local_tremain_ini

!
!-- Start of total CPU time measuring.
    CALL cpu_log( log_point(1), 'total', 'start' )
    CALL cpu_log( log_point(2), 'initialisation', 'start' )

!
!-- Initialize dvrp logging. Also, one PE maybe split from the global
!-- communicator for doing the dvrp output. In that case, the number of
!-- PEs available for PALM is reduced by one and communicator comm_palm
!-- is changed respectively.
#if defined( __parallel )
    CALL MPI_COMM_RANK( comm_palm, myid, ierr )
#endif
    CALL init_dvrp_logging

!
!-- Read control parameters from NAMELIST files and read environment-variables
    CALL parin

!
!-- Determine processor topology and local array indices
    CALL init_pegrid

!
!-- Open a file for debug output
    OPEN( 9, FILE='DEBUG'//myid_char, FORM='FORMATTED' )

!
!-- Generate grid parameters
    CALL init_grid

!
!-- Check control parameters and deduce further quantities
    CALL check_parameters

!
!-- Initialize all necessary variables
    CALL init_3d_model

!
!-- Output of program header
    IF ( myid == 0 )  CALL header

    CALL cpu_log( log_point(2), 'initialisation', 'stop' )

!
!-- Set start time in format hh:mm:ss
    simulated_time_chr = time_to_string( simulated_time )

!
!-- If required, output of initial arrays
    IF ( do2d_at_begin )  THEN
       CALL data_output_2d( 'xy', 0 )
       CALL data_output_2d( 'xz', 0 )
       CALL data_output_2d( 'yz', 0 )
    ENDIF
    IF ( do3d_at_begin )  THEN
       CALL data_output_3d( 0 )
    ENDIF

!
!-- Integration of the model equations using the leap-frog scheme
    CALL time_integration

!
!-- If required, write binary data for model continuation runs
    IF ( write_binary(1:4) == 'true' )  CALL write_3d_binary

!
!-- If required, write binary particle data
    CALL write_particles

!
!-- If required, repeat output of header including the required CPU-time
    IF ( myid == 0 )  CALL header

!
!-- If required, final user-defined actions, and
!-- last actions on the open files and close files. Unit 14 was opened
!-- in write_3d_binary but it is closed here, to allow writing on this
!-- unit in routine user_last_actions.
    CALL cpu_log( log_point(4), 'last actions', 'start' )
    CALL user_last_actions
    IF ( write_binary(1:4) == 'true' )  CALL close_file( 14 )
    CALL close_file( 0 )
    CALL close_dvrp
    CALL cpu_log( log_point(4), 'last actions', 'stop' )

!
!-- Take final CPU-time for CPU-time analysis
    CALL cpu_log( log_point(1), 'total', 'stop' )
    CALL cpu_statistics

#if defined( __parallel )
    CALL MPI_FINALIZE( ierr )
#endif

 END PROGRAM palm