Skip to main content Skip to main navigation

DFKI & TU Berlin Database Systems Researchers Receive SIGMOD 2020 Best Paper Award

Database systems researchers at DFKI and TU Berlin were highly successful this year. Four of their papers were accepted at the 2020 ACM SIGMOD/PODS International Conference on the Management of Data. And, in particular, one of the paper’s received the 2020 ACM SIGMOD Best Paper Award.

[Translate to English:] Data Visual© Adobe Stock

The paper entitled “Pump Up the Volume: Processing Large Data on GPUs with Fast Interconnects,” by Clemens Lutz, Sebastian Breß, Steffen Zeuch, Tilmann Rabl (now at HPI), and Volker Markl explores the use of GPUs to accelerate database query processing.

GPUs are generally ill-suited for large-scale data processing for two reasons: (1) the on-board memory capacity is too small to store large datasets, and (2) the interconnect bandwidth to CPU main-memory is insufficient for ad-hoc data transfers. As a result, GPU-enabled systems face a data transfer bottleneck and do not scale to large datasets. In the paper, the authors investigate how a fast interconnect, such as NVLink 2.0 (linking dedicated GPUs to a CPU) can overcome the two scalability issues.

Consequently, in their experiments they demonstrate that a no-partitioning hash join achieves a speed-up of up to 18x over PCI-e 3.0 and up to 7.3x over an optimized CPU implementation. To download a preprint of the paper visit:



Reinhard Karger
Corporate Spokesman

Phone: +49 681 85775 5253

Deutsches Forschungszentrum für Künstliche Intelligenz GmbH (DFKI)
Stuhlsatzenhausweg 3
66123 Saarbrücken