Package Management with Spack

How to view the list of available packages installed in the facility?

Users can use the spack command to view the list of installed packages.

  $ spack find
  ==> 45 installed packages
-- linux-centos8-broadwell / gcc@7.4.0 --------------------------
armadillo@9.800.3  cmake@3.17.3   libpciaccess@0.13.5  m4@1.4.18        openmpi@3.1.6   
arpack-ng@3.7.0    gdbm@1.18.1    libsigsegv@2.12      ncurses@6.2      openssl@1.1.1g  
autoconf@2.69      hwloc@1.11.11  libtool@2.4.6        numactl@2.0.12   perl@5.30.3     
automake@1.16.2    libiconv@1.16  libxml2@2.9.10       openblas@0.3.10  pkgconf@1.7.3 

-- linux-centos8-broadwell / gcc@8.3.1 --------------------------
autoconf@2.69    expat@2.2.9     isl@0.20              libsigsegv@2.12  mpfr@3.1.6      
automake@1.16.2  gcc@9.3.0       libbsd@0.10.0         libtool@2.4.6    mpfr@3.1.6     
bzip2@1.0.8      gdbm@1.18.1     libedit@3.1-20170329  m4@1.4.18        ncurses@6.1     
cmake@3.16.2     gettext@0.20.1  libffi@3.2.1          mpc@1.1.0        ncurses@6.2     
diffutils@3.7    gmp@6.1.2       libiconv@1.16         mpc@1.1.0        openssl@1.1.1d  

Note that the above list is for representational purpose and differs from the actual output on Sharanga.

How to load and unload a package(s)?

Users can use the spack load command to load the package into their current environment. For example a user who wishes to use PETSc library can use the following syntax.

  $ spack load petsc

If a user wishes to unload the PETSc library from their environment, they can use the spack unload command.

  $ spack unload petsc

If a user wishes to unload all the loaded libraries from their user environment, please use the following command.

  $ spack unload

How to view the list of loaded packages?

Users can use the following command to find the list of currently loaded packages.

  $ spack find --loaded

How do I check the version of the package installed?

Users can type spack find <package name> to find the version of the package installed. Note that the package version is shown after @ in the output.

After submitting a job, I am getting messages like "spack: command not found". Why am I getting this message?

Spack is sourced by the default shell /bin/bash. You may get this message if you have changed the shell to something other than bash. We request you to change the shell back to bash for optimal functioning. Users can use the chsh shell command to change their user shell environment back to bash. Another reason could be due to the unavailability of the desired package.