# Platform dependent configuration functions for the DMI's new CRAY machine in Iceland

function configure()
{
    # This function should configure all settings/modules needed to 
    # later prepare the EC-Earth run directory and set variables used 
    # in the run script

    # Configure paths for building/running EC-Earth
    export ecearth_src_dir=[[[PLT:ACTIVE:ECEARTH_SRC_DIR]]]
    export run_dir=[[[PLT:ACTIVE:RUN_DIR]]]
    export ini_data_dir=[[[PLT:ACTIVE:INI_DATA_DIR]]]

    # File for standard output.
    # NOTE: This will be modified for restart jobs!
    stdout_file=${start_dir}/out/$exp_name.out

    # Resubmit this job for automatic restarts? [true/false]
    # Also, add options for the resubmit command here.
    resubmit_job=[[[PLT:ACTIVE:RESUBMIT_JOB]]]
    resubmit_opt="[[[PLT:ACTIVE:RESUBMIT_OPT]]]"
    
    # Configure GRIBEX paths
    export LOCAL_DEFINITION_TEMPLATES=[[[PLT:ACTIVE:GRIBEX_DEFINITION_PATH]]]

    # Configure grib api paths
    export GRIB_DEFINITION_PATH=[[[PLT:ACTIVE:ECEARTH_SRC_DIR]]]/util/grib_table_126:[[[PLT:ACTIVE:GRIBAPI_BASE_DIR]]]/[[[PLT:ACTIVE:GRIBAPI_DEFINITION_SUBDIR]]]
    export GRIB_SAMPLES_PATH=[[[PLT:ACTIVE:GRIBAPI_BASE_DIR]]]/[[[PLT:ACTIVE:GRIBAPI_SAMPLES_SUBDIR]]]
    export GRIB_BIN_PATH=[[[PLT:ACTIVE:GRIBAPI_BASE_DIR]]]/[[[PLT:ACTIVE:GRIBAPI_BIN_SUBDIR]]]

    # Configure number of processors per node
    proc_per_node=[[[PLT:ACTIVE:PROC_PER_NODE]]]

    # Configure and load modules
    pre_load_modules_cmd="[[[PLT:ACTIVE:PRE_LOAD_MODULES_CMD]]]"
    module_list="[[[PLT:ACTIVE:MODULE_LIST]]]"

    if [ -n "${module_list}" ]
    then
        set +u
        if [ -n "${pre_load_modules_cmd}" ]
        then
            eval $(echo "${pre_load_modules_cmd}")
        fi
        for m in "${module_list}"
        do
            module add $m
        done
        set -u
    fi

    # Add directories to the shared library search path
    if [ -n "[[[PLT:ACTIVE:ADD_TO_LD_LIBRARY_PATH]]]" ]
    then
        export LD_LIBRARY_PATH=${LD_LIBRARY_PATH:+${LD_LIBRARY_PATH}:}"[[[PLT:ACTIVE:ADD_TO_LD_LIBRARY_PATH]]]"
    fi

    #hostname
    ulimit -s unlimited
    ulimit -v unlimited
    #ulimit -n 2048
    #ulimit -a
}

function launch()
{    
    # version using aprun
    cmd="/usr/bin/time -p aprun"
    
    while (( "$#" ))
    do
        nranks=$1
        executable=./$(basename $2)
        shift
        shift

        cmd+=" -n $nranks $executable"
        
        while (( "$#" )) && [ "$1" != "--" ]
        do
            cmd+=" $1"
            shift
        done
        shift || true
        
        (( "$#" )) && cmd+=" :"
    done

    echo $cmd
    $cmd 
}

function finalise()
{
    # This function should execute of any post run functionality, e.g. 
    # platform dependent cleaning or a resubmit

    if ${resubmit_job} && [ $(date -d "${leg_end_date}" +%s) -lt $(date -d "${run_end_date}" +%s) ]
    then
        info "Resubmitting job for leg $((leg_number+1))"

        # go to submit dir
        cd ${PBS_O_WORKDIR}  # same as ${start_dir}

        jobname=$exp_name.$(printf %03d $((leg_number+1)))
        log=$(basename ${stdout_file}).$(printf %03d $((leg_number+1)))

cat > run_ece-esm.job << EOF
#!/bin/bash

#PBS -q hpc
#PBS -N ${jobname}
#PBS -l select=10
#PBS -l place=scatter
#PBS -l walltime=4:00:00
#PBS -j oe
#PBS -o out/${log}

cd \$PBS_O_WORKDIR
mkdir -p out

./ece-esm.sh

exit
EOF

        # Submit command
        set -x
        qsub ./run_ece-esm.job
        set +x
    else
        info "Not resubmitting."
    fi

}