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https://github.com/spack/spack

A flexible package manager that supports multiple versions, configurations, platforms, and compilers.
https://github.com/spack/spack

build-tools hpc hpsf linux macos package-manager python radiuss scientific-computing spack

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A flexible package manager that supports multiple versions, configurations, platforms, and compilers.

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README 

        






  

  

  Spack










CI Status

Bootstrap Status

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Documentation Status

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Slack

Matrix






**[Getting Started]   •   [Config]   •   [Community]   •   [Contributing]   •   [Packaging Guide]**



[Getting Started]: https://spack.readthedocs.io/en/latest/getting_started.html

[Config]: https://spack.readthedocs.io/en/latest/configuration.html

[Community]: #community

[Contributing]: https://spack.readthedocs.io/en/latest/contribution_guide.html

[Packaging Guide]: https://spack.readthedocs.io/en/latest/packaging_guide.html






Spack is a multi-platform package manager that builds and installs

multiple versions and configurations of software. It works on Linux,

macOS, Windows, and many supercomputers. Spack is non-destructive: installing a

new version of a package does not break existing installations, so many

configurations of the same package can coexist.



Spack offers a simple "spec" syntax that allows users to specify versions

and configuration options. Package files are written in pure Python, and

specs allow package authors to write a single script for many different

builds of the same package.  With Spack, you can build your software

*all* the ways you want to.



See the

[Feature Overview](https://spack.readthedocs.io/en/latest/features.html)

for examples and highlights.



To install spack and your first package, make sure you have Python & Git.

Then:



    $ git clone -c feature.manyFiles=true --depth=2 https://github.com/spack/spack.git

    $ cd spack/bin

    $ ./spack install zlib



> [!TIP]

> `-c feature.manyFiles=true` improves git's performance on repositories with 1,000+ files.

>

> `--depth=2` prunes the git history to reduce the size of the Spack installation.



Documentation

----------------



[**Full documentation**](https://spack.readthedocs.io/) is available, or

run `spack help` or `spack help --all`.



For a cheat sheet on Spack syntax, run `spack help --spec`.



Tutorial

----------------



We maintain a

[**hands-on tutorial**](https://spack-tutorial.readthedocs.io/).

It covers basic to advanced usage, packaging, developer features, and large HPC

deployments.  You can do all of the exercises on your own laptop using a

Docker container.



Feel free to use these materials to teach users at your organization

about Spack.



Community

------------------------



Spack is an open source project.  Questions, discussion, and

contributions are welcome. Contributions can be anything from new

packages to bugfixes, documentation, or even new core features.



Resources:



* **Slack workspace**: [spackpm.slack.com](https://spackpm.slack.com).

  To get an invitation, visit [slack.spack.io](https://slack.spack.io).

* **Matrix space**: [#spack-space:matrix.org](https://matrix.to/#/#spack-space:matrix.org):

  [bridged](https://github.com/matrix-org/matrix-appservice-slack#matrix-appservice-slack) to Slack.

* [**Github Discussions**](https://github.com/spack/spack/discussions):

  for Q&A and discussions. Note the pinned discussions for announcements.

* **X**: [@spackpm](https://twitter.com/spackpm). Be sure to

  `@mention` us!

* **Mailing list**: [groups.google.com/d/forum/spack](https://groups.google.com/d/forum/spack):

  only for announcements. Please use other venues for discussions.



Contributing

------------------------

Contributing to Spack is relatively easy.  Just send us a

[pull request](https://help.github.com/articles/using-pull-requests/).

When you send your request, make ``develop`` the destination branch on the

[Spack repository](https://github.com/spack/spack).



Your PR must pass Spack's unit tests and documentation tests, and must be

[PEP 8](https://www.python.org/dev/peps/pep-0008/) compliant.  We enforce

these guidelines with our CI process. To run these tests locally, and for

helpful tips on git, see our

[Contribution Guide](https://spack.readthedocs.io/en/latest/contribution_guide.html).



Spack's `develop` branch has the latest contributions. Pull requests

should target `develop`, and users who want the latest package versions,

features, etc. can use `develop`.



Releases

--------



For multi-user site deployments or other use cases that need very stable

software installations, we recommend using Spack's

[stable releases](https://github.com/spack/spack/releases).



Each Spack release series also has a corresponding branch, e.g.

`releases/v0.14` has `0.14.x` versions of Spack, and `releases/v0.13` has

`0.13.x` versions. We backport important bug fixes to these branches but

we do not advance the package versions or make other changes that would

change the way Spack concretizes dependencies within a release branch.

So, you can base your Spack deployment on a release branch and `git pull`

to get fixes, without the package churn that comes with `develop`.



The latest release is always available with the `releases/latest` tag.



See the [docs on releases](https://spack.readthedocs.io/en/latest/developer_guide.html#releases)

for more details.



Code of Conduct

------------------------



Please note that Spack has a

[**Code of Conduct**](.github/CODE_OF_CONDUCT.md). By participating in

the Spack community, you agree to abide by its rules.



Authors

----------------

Many thanks go to Spack's [contributors](https://github.com/spack/spack/graphs/contributors).



Spack was created by Todd Gamblin, [email protected].



### Citing Spack



If you are referencing Spack in a publication, please cite the following paper:



 * Todd Gamblin, Matthew P. LeGendre, Michael R. Collette, Gregory L. Lee,

   Adam Moody, Bronis R. de Supinski, and W. Scott Futral.

   [**The Spack Package Manager: Bringing Order to HPC Software Chaos**](https://www.computer.org/csdl/proceedings/sc/2015/3723/00/2807623.pdf).

   In *Supercomputing 2015 (SC’15)*, Austin, Texas, November 15-20 2015. LLNL-CONF-669890.



On GitHub, you can copy this citation in APA or BibTeX format via the "Cite this repository"

button. Or, see the comments in `CITATION.cff` for the raw BibTeX.



License

----------------



Spack is distributed under the terms of both the MIT license and the

Apache License (Version 2.0). Users may choose either license, at their

option.



All new contributions must be made under both the MIT and Apache-2.0

licenses.



See [LICENSE-MIT](https://github.com/spack/spack/blob/develop/LICENSE-MIT),

[LICENSE-APACHE](https://github.com/spack/spack/blob/develop/LICENSE-APACHE),

[COPYRIGHT](https://github.com/spack/spack/blob/develop/COPYRIGHT), and

[NOTICE](https://github.com/spack/spack/blob/develop/NOTICE) for details.



SPDX-License-Identifier: (Apache-2.0 OR MIT)



LLNL-CODE-811652