#!/bin/bash
#--------------------------------------------------------------------------------#
# This file is part of the PALM model system.
#
# PALM is free software: you can redistribute it and/or modify it under the terms
# of the GNU General Public License as published by the Free Software Foundation,
# either version 3 of the License, or (at your option) any later version.
#
# PALM is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# PALM. If not, see <http://www.gnu.org/licenses/>.
#
# Copyright 1997-2018  Leibniz Universitaet Hannover
#--------------------------------------------------------------------------------#
#
# Current revisions:
# -----------------
# 
# 
# Former revisions:
# -----------------
# $Id: palm_simple_run 2718 2018-01-02 08:49:38Z kanani $
# Corrected "Former revisions" section
#
# 2696 2017-12-14 17:12:51Z kanani
# Change in file header (GPL part)
#
# 2225 2017-05-16 11:36:20Z raasch
# shell changed to bash
#
# 1310 2014-03-14 08:01:56Z raasch
# update GPL copyright
#
# 1221 2013-09-10 08:59:13Z raasch
# setting of PGI_ACC_SYNCHRONOUS=1 for running with pgi-openacc
#
# 1172 2013-05-30 11:46:00Z raasch
# for performance reasons set PGI_ACC_SYNCHRONOUS=1 for pgi/openacc execution
#
# 1171 2013-05-30 11:27:45Z raasch
# new option -e which defines the execution command to be used to run PALM
#
# 1046 2012-11-09 14:38:45Z maronga
# code put under GPL (PALM 3.9)
#
# 29/08/11 - BjornW - Adapted for lcflow (ForWind cluster in Oldenburg)
# 18/03/10 - Siggi  - Some comments changed
# 25/01/10 - Siggi  - Generating the first version


#--------------------------------------------------------------------------------#
# palm_simple_run - a simple method for running the palm code without
#                   using the mrun script
#
# This script runs the palm code in a unique subdirectory (OUTPUT...,
# current time/date and number of processors are part of the subdirectory
# name).
# It requires that palm has been installed with command
# palm_simple_install and that the executable palm has been created
# with make in directory  ...../MAKE_DEPOSITORY_simple
#--------------------------------------------------------------------------------#


    # Variable declarations + default values
 case=example_cbl
 cpumax=999999
 execute_for=unknown
 localhost=unknown
 localhost_realname=$(hostname)
 mpi_procs=1
 mpi_procs_per_node=1
 openmp_threads=1

 typeset -i  ii


    # Read shellscript options
 while  getopts  :c:e:l:n:p:t:  option
 do
   case  $option  in
       (c)   case=$OPTARG;;
       (e)   execute_for=$OPTARG;;
       (l)   localhost=$OPTARG;;
       (n)   mpi_procs_per_node=$OPTARG;;
       (p)   mpi_procs=$OPTARG;;
       (t)   openmp_threads=$OPTARG;;
       (\?)  printf "\n  +++ unknown option $OPTARG \n"
             printf "\n      allowed option are -c, -e, -l, -n, -p, -t \n"
             exit;;
   esac
 done


    # Find out the global svn revision number
 global_revision=`svnversion ${palm_dir}trunk  2>/dev/null`
 global_revision="Rev: $global_revision"


    # Generate unique directory/files for this run
 timedate="`date +%d.%b_%H:%M:%S`"
 suffix=$case+$mpi_procs+$timedate
 RUNDIR=OUTPUT.$suffix/

 if [[ ! -d $RUNDIR ]]
 then
    mkdir $RUNDIR
    echo "*** running in directory $RUNDIR"
 else
    echo "+++ ERROR: $RUNDIR exists\!   Must be unique.  Exiting."
    exit
 fi


    # Check if palm has been installed and copy executable into the run
    # directory
 if [[ ! -f ${palm_dir}MAKE_DEPOSITORY_simple/palm ]]
 then
    echo "+++ ERROR: palm executable does not exist."
    echo "           Please run \"palm_simple_install\"."
    exit
 else
    cp  ${palm_dir}MAKE_DEPOSITORY_simple/palm  $RUNDIR/palm
 fi


    # Check, if parameter file exists and copy into the run directory
 if [[ ! -f ${palm_dir}JOBS/${case}/INPUT/${case}_p3d ]]
 then
    echo "+++ ERROR: parameter file"
    echo "           \"${palm_dir}JOBS/${case}/INPUT/${case}_p3d\""
    echo "           does not exist."
    exit
 else
    cp  ${palm_dir}JOBS/${case}/INPUT/${case}_p3d  $RUNDIR/PARIN
 fi


    # Switch to run directory
 cd  $RUNDIR



    # Create NAMELIST file containing environment values needed by palm
 cat  >  ENVPAR  <<  %%END%%
 &envpar  run_identifier = '$case', host = '$localhost',
          write_binary = 'false', tasks_per_node = $mpi_procs_per_node,
          maximum_cpu_time_allowed = ${cpumax}.,
          revision = '$global_revision',
          local_dvrserver_running = .FALSE. /

%%END%%


    # Coupled runs cannot be carried out with this simple run script
 echo "no_coupling"  >  runfile_atmos


    # Generate hostfile (if neccessary)
 (( ii = 1 ))
 while (( ii <= $mpi_procs ))
 do
    echo  $localhost_realname  >>  hostfile
    (( ii = ii + 1 ))
 done


    # Set number of OpenMP threads
 export OMP_NUM_THREADS=$openmp_threads



    # Start palm run
 echo "*** palm will be run:  MPI tasks: $mpi_procs   OpenMP thread: $OMP_NUM_THREADS"

 case $execute_for in

    (imuk)         mpiexec  -machinefile hostfile  -n $mpi_procs  ./palm  < runfile_atmos;;
    (sgi-mpt)      mpiexec_mpt  -np $mpi_procs  ./palm  < runfile_atmos;;
    (hpc-flow)     mpiexec  -machinefile $TMPDIR/machines -n $mpi_procs  -env I_MPI_FABRICS shm:ofa ./palm  < runfile_atmos;;
    (pgi-openacc)  export PGI_ACC_SYNCHRONOUS=1; ./palm;;
    (*)      echo "+++ -e option to define execution command is missing";;

 esac

 echo "*** palm finished"
 echo "*** see"
 echo "    \"$RUNDIR\""
 echo "    for results"