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T: Fachverband Teilchenphysik

T 25: Grid Computing

T 25.6: Vortrag

Dienstag, 31. März 2020, 18:15–18:30, H-HS V

Performance monitoring of opportunistic resources at ATLAS-BFG — Anton J. Gamel, •Stefan Kroboth, Benjamin Rottler, and Markus Schumacher — Albert-Ludwigs-Universität Freiburg

The workload of computing clusters is typically unpredictable and tends to alternate between over- and under-utilization of the available resources. Tools such as COBalD/TARDIS provide an easy way to opportunistically make under-utilized resources of one site available to other sites. Fine-tuning of the involved software in order to optimize efficiency and user experience needs to be performed in a production environment and is therefore difficult without continuous monitoring of logs and meaningful metrics. In this work we present the current situation at Freiburg University where resources of the NEMO cluster are used to extend the ATLAS-BFG cluster in an opportunistic fashion using COBalD/TARDIS. The talk covers the tools involved in the collection and analysis of logs and metrics acquired from different sources within the local and opportunistic resources. Examples of how the aggregation of logs and the monitoring of metrics aids decision-making are shown. Besides fine-tuning of the involved tools, this setup can also be used to detect problems and anomalies early on.