#! /bin/bash
# Time-stamp: <Mon 2021-11-15 21:51 svarrette>
################################################################################
# Sample submission script illustrating singleton dependency when exploring
# a large parameter range divided in subdomains of chuncksize element
# Here no more than MAXNODE=4 nodes are used.
############################################################
CMD_PREFIX=echo

LAUNCHER=./launcher.stressme.${ULHPC_CLUSTER}.sh
JOBNAME=StressMe
MAXNODES=4

min=1
max=100
chunksize=20

############################################################
print_error_and_exit() { echo "*** ERROR *** $*"; exit 1; }
usage(){
    cat <<EOF
Usage: $(basename $0) [-x] [-N MAXNODES]
    Sample submision script across multiple nodes
    Execution won't spread on more than ${MAXNODES} nodes (singleton dependency)
      -x --execute         really submit the jobs with sbatch
      -N --nodes MAXNODES  set max. nodes
EOF
}
############################################################
while [ $# -ge 1 ]; do
    case $1 in
        -h | --help) usage; exit 0;;
        -x | --execute) CMD_PREFIX=;;
        -N | --nodes) shift; MAXNODES=$1;;
        *) print_error_and_exit "Usage: $0 -h";;
    esac
    shift;
done
mkdir -p logs     # create log directory

for i in $(seq $min $chunksize $max); do
    ${CMD_PREFIX} sbatch \
                  -J ${JOBNAME}_$(($i/$chunksize%${MAXNODES})) --dependency singleton \
                  ${LAUNCHER} --joblog logs/state.${i}.parallel.log  "{$i..$((i+$chunksize))}";
done