galform-execution 0.1.0

GALFORM execution helper utilities

galform_execution

A Python-based utility to manage GALFORM N-body simulation submissions to SLURM on COSMA.

galform_execution automates the generation and submission of SLURM batch scripts for GALFORM runs. It handles environment setup, parameter injection into .input.ref files, and conditional post-processing (NETA, LUM_FUN, etc.), providing a robust and reproducible workflow for large-scale galaxy formation simulations.

Key Features

• Dynamic Script Generation: Generates self-contained tcsh scripts with resolved simulation and model parameters.
• Config-Driven: Manage simulations, models, and dust parameters via JSON configurations.
• SLURM Optimized: Automatic job array support and remapping of high subvolume indices.
• Robustness: Built-in retries with exponential backoff for transient scheduler errors.

Prerequisites

• Environment: Access to the COSMA HPC cluster (Durham University).
• Tooling: uv is recommended for fast installation and dependency management.

Installation

# Clone the repository
git clone https://github.com/OscarHickman/galform_execution.git
cd galform_execution

# Install the package and its dependencies using uv
uv pip install -e .

Quick Start

1. Identify your GALFORM directory

You need a compiled version of GALFORM with the standard directory structure (containing build/galform2, *.input.ref, etc.).

2. Preview a submission (Dry Run)

Check the generated SLURM script without submitting to the queue:

submit-galform-job /path/to/your/galform --nbody-sim Mill2 --model lc16 --iz 40 --nvol 1-64 --dry-run

3. Submit a job array

submit-galform-job /path/to/your/galform --nbody-sim Mill2 --model lc16 --iz 40 --nvol 1-64 --output-folder-name MyProject

Configuration

Configurations are stored in galform_execution/config/:

• simulations/: JSON files defining N-body simulation parameters (tree paths, cosmology).
• models.json: Maps model names to base input files and dust profiles.
• redshift_lists/: Redshift mappings for various simulations.

Development

Running Tests

uv run pytest tests

Linting

uv run ruff check galform_execution

License

Distributed under the MIT License. See LICENSE for more information.