Spack: Usage Example

Creating and Using Ecosystem

Flight Env provides quick setup methods to create a spack software ecosystem.

To install and use spack:

• Activate the flight system

• Create the spack installation for the user:

  [flight@gateway1 ~]$ flight env create spack
  Creating environment spack@default
     > ✅ Verifying prerequisites
     > ✅ Fetching prerequisite (spack)
     > ✅ Extracting Spack hierarchy (spack@default)
     > ✅ Bootstrapping Spack environment (spack@default)
  Environment spack@default has been created
  

• Activate the spack ecosystem:

  [flight@gateway1 ~]$ flight env activate spack
  <spack> [flight@gateway1 ~]$
  

• Check that spack can be run:

  <spack> [flight@gateway1 ~]$ spack --version
  spack 0.12.1
  

Installing and Running Perl

An example workflow using perl is demonstrated below.

• View available versions:

  <spack> [flight@gateway1 ~]$ spack list perl
  ==> 148 packages.
  perl                          perl-extutils-pkgconfig     perl-math-cdf                    perl-sub-uplevel
  perl-algorithm-diff           perl-file-copy-recursive    perl-math-cephes                 perl-svg
  perl-app-cmd                  perl-file-listing           perl-math-matrixreal             perl-swissknife
  perl-array-utils              perl-file-pushd             perl-module-build                perl-task-weaken
  perl-b-hooks-endofscope       perl-file-sharedir-install  perl-module-implementation       perl-term-readkey
  <-- snip -->
  
  <spack> [flight@gateway1 ~]$ spack info perl
  Package:   perl
  
  Description:
      Perl 5 is a highly capable, feature-rich programming language with over
      27 years of development.
  
  Homepage: http://www.perl.org
  
  Tags:
      None
  
  Preferred version:
      5.26.2     http://www.cpan.org/src/5.0/perl-5.26.2.tar.gz
  
  Safe versions:
      5.28.0     http://www.cpan.org/src/5.0/perl-5.28.0.tar.gz
      5.26.2     http://www.cpan.org/src/5.0/perl-5.26.2.tar.gz
  

• Install specific version:

  <spack> [flight@gateway1 ~]$ spack install perl@5.26.2
  ==> Installing pkgconf
  ==> Searching for binary cache of pkgconf
  ==> Warning: No Spack mirrors are currently configured
  ==> No binary for pkgconf found: installing from source
  ==> Fetching http://distfiles.alpinelinux.org/distfiles/pkgconf-1.4.2.tar.xz
  <-- snip -->
  ==> Successfully installed perl
    Fetch: 0.83s.  Build: 2m 31.21s.  Total: 2m 32.04s.
  [+] /home/flight/.local/share/flight/env/spack+default/opt/spack/linux-centos7-x86_64/gcc-4.8.5/perl-5.26.2-wavwojlef7lshvx2awf4zze2lrx5l7l4
  

• Check installation location:

  <spack> [flight@gateway1 ~]$ module load perl-5.26.2-gcc-4.8.5-wavwojl
  <spack> [flight@gateway1 ~]$ which perl
  ~/.local/share/flight/env/spack+default/opt/spack/linux-centos7-x86_64/gcc-4.8.5/perl-5.26.2-wavwojlef7lshvx2awf4zze2lrx5l7l4/bin/perl
  

• Install perl library (this may prompt for initial cpan configuration, once configuration is complete then the library will be installed):

  <spack> [flight@gateway1 ~]$ cpan File::Slurp
  Loading internal null logger. Install Log::Log4perl for logging messages
  Reading '/home/flight/.cpan/Metadata'
    Database was generated on Wed, 11 Sep 2019 14:41:02 GMT
  Running install for module 'File::Slurp'
  <-- snip -->
  

• Check installation worked:

  <spack> [flight@gateway1 ~]$ cpan File::Slurp
  Loading internal null logger. Install Log::Log4perl for logging messages
  Reading '/home/flight/.cpan/Metadata'
    Database was generated on Wed, 11 Sep 2019 14:41:02 GMT
  File::Slurp is up to date (9999.27).