SKA SDP Spack Repository

This repository contains Spack package definitions for the Square Kilometre Array (SKA) Science Data Processor (SDP) software stack and its dependencies.

Quick Start

The quickest method is to use pre-built environments. Assuming you have the prerequisites and are on a Ubuntu system:

$ git clone --depth=2 --branch=releases/v1.1 https://github.com/spack/spack.git
$ source spack/share/spack/setup-env.sh
$ spack compiler find
$ git clone https://gitlab.com/ska-telescope/sdp/ska-sdp-spack.git
$ spack env activate ska-sdp-spack/env/aws/ubuntu

At this point you should be able to install and run software:

$ spack install wsclean dp3
$ spack load wsclean dp3
$ wsclean --version
WSClean version 3.6 (2025-02-07)
[...]

Check documentation for building from source or using containers, which is more portable.

Getting Help

Please consult the ska-sdp-spack documentation, as well as the official Spack documentation on different spack commands and subcommand flags. If you have access to SKAO Slack, consider joining us in the #ska-sdp-spack slack channel!

Contributing

Git workflow

When adding packages or making other changes to ska-sdp-spack, the general workflow is:

Create a feature branch at the ska-sdp-spack repository.
Create a merge request.
Assign reviewer(s):

The CODEOWNERS file describes who is responsible for the part of the code.
Ask in the #ska-sdp-spack slack channel.

If you need to deploy the Spack packages to the DP AWS HPC Cluster, you have to create a new release. The Deployment section describes creating and using releases of ska-sdp-spack.

Conventions

Please adhere to these general conventions for the ska-sdp-spack repository:

The SKA coding guidelines.
The Testing strategy for this repository.
The Deployment page describes the version convention.

Acknowledgement

We acknowledge the initial work by our colleagues at Astron in the schaap-spack repository, which served as the seed and foundation for this project and builds upon that work, which is also ongoing in the current project.

License

This project is licensed under the BSD 3-Clause “New” or “Revised” License - see the LICENSE file for details.