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Python and C/C++ code to read halo catalogs and other Abacus N-body data products

Project description

abacusutils

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abacusutils is a package for reading and manipulating data products from the Abacus N-body project. In particular, these utilities are intended for use with the AbacusSummit suite of simulations. We provide multiple interfaces: primarily Python 3, but also C/C++ [coming soon!] and language-agnostic interfaces like Unix pipes.

These interfaces are documented here: https://abacusutils.readthedocs.io

Press the GitHub "Watch" button in the top right and select "Custom->Releases" to be notified about bug fixes and new features! This package is still in early stages, and bugs are likely to be identified and squashed, and new performance opportunities identified.

Installation

The Python abacusutils package is hosted on PyPI and can be installed by installing "abacusutils":

pip install abacusutils

The Unix pipe interface (pipe_asdf) is also installed as part of the pip install. Note that our custom ASDF fork is no longer required as of abacusutils 1.0.0.

The C/C++ code (coming soon!) can be downloaded directly by cloning this repository:

git clone https://github.com/abacusorg/abacusutils.git

or by downloading a zip archive of the repository:

wget https://github.com/abacusorg/abacusutils/archive/master.zip

Usage

abacusutils has multiple interfaces, summarized here and at https://abacusutils.readthedocs.io/en/latest/usage.html.

Specific examples of how to use abacusutils to work with AbacusSummit data will soon be given at the AbacusSummit website: https://abacussummit.readthedocs.io

Python

The abacusutils PyPI package contains a Python package called abacusnbody. This is the name to import (not abacusutils, which is just the name of the PyPI package). For example, to import the compaso_halo_catalog module, use

import abacusnbody.data.compaso_halo_catalog

Unix Pipes

The pipe_asdf Python script reads columns from ASDF files and pipes them to stdout. For example:

    $ pipe_asdf halo_info_000.asdf -f N -f x_com | ./client

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