Spack
Introduction
Spack is a multi-package setup and build system. It replaces UPS and MRB (Multi-Repo Build) and related packages. The computing division will work to build and provide their software (art, ifdhc) within spack. Mu2e will probably not use the spack build features, but will have to use spack to access pre-built software, instead of ups setup command.
Scripts are provided to allow a spack setup of a UPS product and vice versa. The user doesn't see the difference.
Usage
setup mu2e source /cvmfs/fermilab.opensciencegrid.org/packages/common/spack/rollout/NULL/share/spack/setup-env.sh
defines
SPACK_ROOT=/cvmfs/fermilab.opensciencegrid.org/packages/common/spack/rollout/NULL MODULEPATH=$SPACK_ROOT/share/spack/modules/linux-scientific7-x86_64 DK_NODE=$SPACK_ROOT/share/spack/dotkit/linux-scientific7-x86_64 PATH= ... /cvmfs/fermilab.opensciencegrid.org/packages/common/spack/rollout/NULL/bin BASH_FUNC_spack()=... load ... unload ...
and some useful commands
spack -h spack find -h spack arch spack find spack find --variants art_root_io arch=linux-scientific7-x86_64_v2 %gcc@13.1.0 spack find -ldv
You can see the common lab packages are available in spack: ifdhc, jobsub_client, sam_web_client.
spack load ifdhc # load (like ups setup) using a hash for the version and qualifiers spack load ifdhc/242t7pk
Notes
show what spack knows about architectures
spack arch --known-targets
full listing of dependencies
spack find --long --show-flags --deps --variants ifdhc
diff between two hashes
spack diff art-root-io/jrcjyn4 art-root-io/h43e5rd
How to group sets of setups into one. You can make a spack environment, like
spack env create uboone_analysis_current_sl7_x86_64
then
spack activate uboone_analysis_current_sl7_x86_64
and "spack install" packages into it; then if you
spack env activate uboone_analysis_current_sl7_x86_64
those will be the packages you see, and they're all spack loaded at once. Marc stills need to add support for that to the cvmfs scripts though...
geant names
geant data packages have different names in spack. From Julia:
g4able is G4ABLA g4emlow is G4EMLOW g4neutron is G4NDL g4nucleonsxs is G4SAIDDATA g4nuclide is G4ENSDFSTATE g4photon is PhotonEvaporation g4pii is G4PII g4radiative is RadioactiveDecay g4tendl is G4TENDL g4particlexs is G4PARTICLEXS g4incl is G4INCL G4NEUTRONXS appears to be obsolete.