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Spack is a multi-platform package manager that allows to easily install multiple versions and configurations of software. It is especially useful for building and maintaining installations of many different versions of the same software.
Currently Spack is available on Marconi100 and Galileo100. Please refer to the spack documentation page for more detailed information.
Loading the spack module available on the cluster
We provide a module to load a pre-configured Spack instance:
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Notice that $WORK space will be removed at the end of the corresponding project. If you want to define different paths for cache, installation, modules and user scope directories, please refer to spack manual.
Listing the software packages available to be installed
You can check if the software package you want install is available via spack with the comand spack list, which prints out a list of all of the packages Spack can install. You can also specified the name of the package:
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$ spack list | grep <package_name>
Providers
In the spack environment, "virtual packages" are defined (e.g. mpi), which are provided by multiple specific packages (e.g. intel-oneapi-mpi, openmpi, ...). The list of the available virtual packages is given by
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(e.g. intel-oneapi-mpi and openmpi packages provide the mpi virtual package; netlib-lapack and openblas provide the lapack virtual package).
Variants and dependencies
If the package of your interest is available to be installed via spack, look at its build “variants” that yon can switch in/off or customize, and the “dependencies” that will be used for the building, linking and running phases and you are able to personalize:
$ spack info <package_name>
Listing the software packages installed from Cineca staff via spack
Cineca staff has already installed through the spack module that you loaded a suite of compilers, libraries, tools and applications and you can use them to install additional software (it is strongly recommended). List the packages already installed
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The list of all the compilers already installed and ready to be used can be seen with
$ spack compilers
Installing a new package
Spec command
In order to install a package with the spack module you have to select for it a version, a compiler, the dependencies and the building variants (we will show how to do it in the following). The combination of all these parameters is the "spec" with which the package will be installed.
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$ spack spec -Il parmetis %gcc@10.2.0 ^/ov3ei7j
- oefbg6x parmetis@4.0.3%gcc@10.2.0~gdb~int64~ipo+shared build_type=RelWithDebInfo patches=4f892531eb0a807eb1b82e683a416d3e35154a455274cf9b162fb02054d11a5b,50ed2081bc939269689789942067c58b3e522c269269a430d5d34c00edbc5870,704b84f7c7444d4372cb59cca6e1209df4ef3b033bc4ee3cf50f369bce972a9d arch=linux-centos8-cascadelake
[^] ov3ei7j ^openmpi@4.1.1%gcc@10.2.0~atomics+cuda~cxx~cxx_exceptions~gpfs~internal-hwloc~java+legacylaunchers~lustre~memchecker~pmi+pmix~singularity~sqlite3+static~thread_multiple+vt+wrapper-rpath fabrics=ucx schedulers=slurm arch=linux-centos8-cascadelake
Install command
For a specific package you can install the default spec or a custom spec by selecting a specific version (through @ symbol), and/or a specific compiler (through % symbol), building variants (through +,-,= symbols) and specific dependencies (through ^ symbol).
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$ spack install <compiler_package>
$ spack load <compiler_package>
$ spack compiler add
$ spack compilers
Module command
After installing a package, you can load it with the spack command
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