Gizmo Production Run

1. Lock executable and config

• Freeze compile options and parameter files.
• Save source revision and dependency versions.
• Keep the production binary separate from test binaries.

2. Stage production workspace

mkdir -p /scratch/<project>/gizmo-prod/{ic,output,logs,restart}
cp <ic-files> /scratch/<project>/gizmo-prod/ic/

3. Launch job chain

#!/bin/bash
#SBATCH -J gizmo_prod
#SBATCH -N 8
#SBATCH --ntasks-per-node=64
#SBATCH -t 24:00:00
#SBATCH -o logs/slurm-%j.out

cd /scratch/<project>/gizmo-prod
srun /path/to/GIZMO params_prod.txt

4. Operate and audit

• Monitor load balance, timestep adaptation, and memory usage.
• Verify checkpoint integrity before each continuation job.
• Run periodic science sanity checks while jobs are active.