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T: Fachverband Teilchenphysik

T 15: GRID Computing

T 15.5: Talk

Monday, March 21, 2022, 17:15–17:30, T-H28

AUDITOR: An accounting system for opportunistically used resources — Michael Böhler, •Stefan Kroboth, and Markus Schumacher — Albert-Ludwigs-Universität Freiburg

Computing clusters often experience varying workload over time, which may lead to suboptimal utilization of available hardware. Sharing resources between multiple clusters can mitigate this inefficiency. The software COBalD/TARDIS enables the integration of resources in an opportunistic, dynamic, and transparent manner and is successfully operated on various sites for a wide range of scenarios. In such a setup, the question of how to account for computations conducted on shared resources arises.

In this work the prototype of AUDITOR, the AccoUnting Data handlIng Toolbox for Opportunistic Resources is presented. At its core it consists of a database and a server which can be interacted with using a REST API. This allows collectors to store data relevant for accounting in the database and plugins to publish the data on an external platform or perform other actions. The extensible nature of AUDITOR enables handling of various use cases by combining the appropriate collectors and plugins. An example use case is described, where the fairshare of one batchsystem is transfered to priorities of another based on data collected from COBalD/TARDIS.