0fc3b58890
- The following now work differently:
spec['mpi']
spec['blas']
This can return a spec for openmpi, mpich, mvapich, etc., EVEN if
the spec is already concretized. This means that in a package that
`depends_on('mpi')`, you can do `spec['mpi']` to see what it was
concretized to. This should simplify MPI and BLAS packages.
'mpi' in spec
'blas' in spec
Previously, if the spec had been concretized, these would be `False`
because there was not a dependency in the DAG with either of these
names. These will now be `True` even if the spec has been
concretized. So, e.g., this will print "YES"
s = Spec('callpath ^mpich')
if 'mpi' in spec:
print "YES"
- Similarly, this will be True:
Spec('mpich').satisfies('mpi')
- Because of the way virtual dependencies are currently implemented,
the above required some fiddling around with `package.py` so that it
would never call `Spec.__contains__` (and result in endless
recursion).
- This should be fixed by allowing virutal dependnecies to have their
own package class.
- This would allow a quicker check for vdeps, without a call to
`all_packages`.
- For the time being, `package.py` shouldn't call `__contains__`
|
||
|---|---|---|
| bin | ||
| lib/spack | ||
| share/spack | ||
| var/spack | ||
| .gitignore | ||
| LICENSE | ||
| README.md | ||
Spack
Spack is a package management tool designed to support multiple versions and configurations of software on a wide variety of platforms and environments. It was designed for large supercomputing centers, where many users and application teams share common installations of software on clusters with exotic architectures, using libraries that do not have a standard ABI. Spack is non-destructive: installing a new version does not break existing installations, so many configurations can coexist on the same system.
Most importantly, Spack is simple. It offers a simple spec syntax so that users can specify versions and configuration options concisely. Spack is also simple for package authors: package files are writtin in pure Python, and specs allow package authors to write a single build script for many different builds of the same package.
See the Feature Overview for examples and highlights.
To install spack and install your first package:
$ git clone https://github.com/scalability-llnl/spack.git
$ cd spack/bin
$ ./spack install libelf
Documentation
Full documentation for Spack is also available.
Get Involved!
Spack is an open source project. Questions, discussion, and contributions are welcome. Contributions can be anything from new packages to bugfixes, or even new core features.
Mailing list
If you are interested in contributing to spack, the first step is to join the mailing list. We're currently using LLNL's old-fashioned mailing list software, so you'll need to click the links below and send the resulting email to subscribe or unsubscribe:
Contributions
At the moment, contributing to Spack is relatively simple. Just send us
a pull request.
When you send your request, make develop the destination branch.
Spack is using a rough approximation of the Git
Flow
branching model. The develop branch contains the latest
contributions, and master is always tagged and points to the
latest stable release.
Authors
Spack was written by Todd Gamblin, tgamblin@llnl.gov.
Significant contributions were also made by:
- David Beckingsale
- David Boehme
- Alfredo Gimenez
- Luc Jaulmes
- Matt Legendre
- Greg Lee
- Adam Moody
- Saravan Pantham
- Joachim Protze
- Bob Robey
- Justin Too
Release
Spack is released under an LGPL license. For more details see the LICENSE file.
LLNL-CODE-647188