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Early Experiences with Charliecloud for HPC
DescriptionContainers have become an increasingly important part of the research software ecosystem for enabling portability and reproducibility, especially for cloud-native workflows. However, challenges remain for facilitators working to bring the success of containers in the cloud to their local HPC clusters due to strict security and performance requirements. Established container runtimes such as Singularity sacrifice features in order to meet these requirements, leaving some researcher’s needs unfilled. Charliecloud, a newer container runtime, offers a more complete container experience for HPC by being fully unprivileged at all stages of container development, testing, and production. TAMU HPRC, an early adopter of Charliecloud, reports on its experiences in supporting Charliecloud for HPC to provide guidance and inspiration for other institutions considering supporting Charliecloud. Lessons learned about installation, usage, best practices, applications, and user training are described, as well as recommendations for further development.
