Spack is a package manager for supercomputers, Linux, and macOS. It makes installing scientific software easy. With Spack, you can build a package with multiple versions, configurations, platforms, and compilers, and all of these builds can coexist on the same machine.
Spack isn’t tied to a particular language; you can build a software stack in Python or R, link to libraries written in C, C++, or Fortran, easily swap compilers, and target specific microarchitectures. Use Spack to install without root in your home directory, to manage shared installations and modules, or to build combinatorial versions of software for testing.
Clone Spack from GitHub and you’re ready to go:
Custom versions & configurations
The installation of Spack can be customized in a variety of ways. Users can specify the package version, compiler, compile-time options, and even cross-compile platform, all from the command line.
Users can specify as many or few options as they care about. Spack will fill in the unspecified values with sensible defaults. The two listed syntaxes for variants are identical when the value is boolean.
Spack allows dependencies of particular installations to be customized
extensively. Suppose that
hdf5 depends on
openmpi and indirectly on
^, users can add custom configurations for dependencies:
Packages can peacefully coexist
Spack installs every unique package/dependency configuration into its own prefix, so new installs will not break existing ones.
Spack avoids library misconfiguration by using
RPATH to link dependencies.
When a user links a library or runs a program, it is tied to the dependencies
it was built with, so there is no need to manipulate
Creating packages is easy
Spack packages are simple Python scripts. The
command will generate boilerplate to get you started, and you can create a
package in a matter of minutes. You write the build instructions; Spack builds
the dependencies for you.
Visit Spack on GitHub and take the tutorial. Join the discussion on the GoogleGroup, and learn how to contribute your own packages. Check out the Upcoming Events page for tutorials, workshops, BoFs, etc.