25th International Conference on Computing in High Energy & Nuclear Physics

Building HEP Software with Spack: Experiences from Pilot Builds for Key4hep and Outlook for LCG Releases

20 May 2021, 15:52

13m

Short Talk Offline Computing Virtualisation

Speaker

Valentin Volkl (University of Innsbruck (AT))

Description

Consistent, efficient software builds and deployments are a common concern for all HEP experiments. These proceedings describe the evolution of the usage of the Spack package manager in HEP in the context of the LCG stacks and the current Spack-based management of Key4hep software. Whereas previously Key4hep software used spack only for a thin layer of FCC experiment software on top of the LCG releases, it is now possible to build the
complete stack, from system libraries to FCC-, iLCSoft- and CEPC software
packages with Spack. This pilot build doubles as a prototype for a Spack-based
LCG release. The workflows and mechanisms that can be used for this purpose,
potential for improvement as well as the roadmap towards a complete LCG release in spack are discussed.

Presentation materials

2021-05-20-vCHEP-Spack.pdf

Recording

Proceedings

Paper

Spack_vCHEP21.pdf