#!/usr/bin/env bash
#SBATCH --job-name=hyphal-flow-sweep
#SBATCH --nodes=1
#SBATCH --ntasks=128
#SBATCH --cpus-per-task=1
#SBATCH --mem=240G
#SBATCH --time=3-00:00:00
#SBATCH --gres=tmp:100G
#SBATCH --partition=multi
#SBATCH --output=slurm-sweep-%j.out
#SBATCH --error=slurm-sweep-%j.err

# Thin Hamilton sweep wrapper. Parsing, compilation and case hygiene stay in
# the repository runner; the site environment supplies Basilisk and MPI.

set -euo pipefail

SCRIPT_DIR="\${SLURM_SUBMIT_DIR:-\$(pwd)}"
SWEEP_FILE="\${1:-sweep.params}"
: "\${RUN_ROOT:?Set RUN_ROOT to the reserved external run directory}"
[[ -f "\${SCRIPT_DIR}/runParameterSweep.sh" &&
   -f "\${SCRIPT_DIR}/simulationCases/hyphal-flow.c" ]] || {
  printf 'ERROR: submit this wrapper from the hyphal-flow repository root\n' >&2
  exit 2
}
[[ "\$RUN_ROOT" = /* && "\$RUN_ROOT" != / && -d "\$RUN_ROOT" ]] || {
  printf 'ERROR: RUN_ROOT must be an existing absolute directory other than /\n' >&2
  exit 2
}
SCRIPT_REAL="\$(cd "\$SCRIPT_DIR" && pwd -P)"
RUN_REAL="\$(cd "\$RUN_ROOT" && pwd -P)"
case "\${RUN_REAL}/" in
  "\${SCRIPT_REAL}/"*) printf 'ERROR: RUN_ROOT must be outside the source checkout\n' >&2; exit 2 ;;
esac

module purge
module load gcc
module load openmpi

cd "\$SCRIPT_DIR"
bash runParameterSweep.sh "\$SWEEP_FILE" \
  --output-root "\$RUN_REAL" --mpi --cpus "\${SLURM_NTASKS:-128}"