Aachen 2019 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 59: Grid-Computing und Software

T 59.5: Vortrag

Mittwoch, 27. März 2019, 17:00–17:15, S11

Concept of federating German CMS Tier 3 Resources — •R. Florian von Cube, Manuel Giffels, Christoph Heidecker, Günter Quast, Martin Sauter, and Matthias J. Schnepf — Karlsruher Institut für Technologie

Computing resources located at the different institutes of the German CMS community (DCMS) provide a large infrastructure for end user analyses. Some groups also have access to HPC centers and cloud resources, not dedicated to HEP. Though, all of these resources are mostly only shared within the local group. The community, however, profits from making resources such as HPC centers and cloud resources available to all DCMS users for shared, efficient usage.

In this contribution we present a concept, how an overlay submission infrastructure based on HTCondor's routing and flocking mechanism can be used to connect different resource pools available to the DCMS community in order to allow a transparent and more efficient utilization of all resources. Beside integrating static resources, also dynamically allocated ones can be considered as well, provided that site specific access and usage policies are taken into account and implemented. Virtualization and container technologies such as virtual machines, Docker, and Singularity are key components to assure well-defined software environments on opportunistic resources, no matter where computing jobs are run.

We present the concept, and the current status of the proof-of-concept setup.