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URN: urn:nbn:de:swb:90-634934
DOI: 10.1088/1742-6596/762/1/012011

Data Locality via Coordinated Caching for Distributed Processing

Fischer, M.; Kuehn, E.; Gffels, M.; Jung, C.

To enable data locality, we have developed an approach of adding coordinated caches to existing compute clusters. Since the data stored locally is volatile and selected dynamically, only a fraction of local storage space is required. Our approach allows to freely select the degree at which data locality is provided. It may be used to work in conjunction with large network bandwidths, providing only highly used data to reduce peak loads. Alternatively, local storage may be scaled up to perform data analysis even with low network bandwidth. To prove the applicability of our approach, we have developed a prototype implementing all required functionality. It integrates seamlessly into batch systems, requiring practically no adjustments by users. We have now been actively using this prototype on a test cluster for HEP analyses. Specifically, it has been integral to our jet energy calibration analyses for CMS during run 2. The system has proven to be easily usable, while providing substantial performance improvements.
Since confirming the applicability for our use case, we have investigated the design in a more general way. Simulations ... mehr

Zugehörige Institution(en) am KIT Steinbuch Centre for Computing (SCC)
Institut für Kernphysik (IKP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator ISSN: 1742-6588, 1742-6596
KITopen ID: 1000063493
HGF-Programm 51.01.01; LK 01
Erschienen in Journal of physics / Conference Series
Band 762
Seiten 012011
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