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Robust Query Processing in Co-Processor-accelerated Databases

Published: 26 June 2016 Publication History

Abstract

Technology limitations are making the use of heterogeneous computing devices much more than an academic curiosity. In fact, the use of such devices is widely acknowledged to be the only promising way to achieve application-speedups that users urgently need and expect. However, building a robust and efficient query engine for heterogeneous co-processor environments is still a significant challenge.
In this paper, we identify two effects that limit performance in case co-processor resources become scarce. Cache thrashing occurs when the working set of queries does not fit into the co-processor's data cache, resulting in performance degradations up to a factor of 24. Heap contention occurs when multiple operators run in parallel on a co-processor and when their accumulated memory footprint exceeds the main memory capacity of the co-processor, slowing down query execution by up to a factor of six.
We propose solutions for both effects. Data-driven operator placement avoids data movements when they might be harmful; query chopping limits co-processor memory usage and thus avoids contention. The combined approach-data-driven query chopping-achieves robust and scalable performance on co-processors. We validate our proposal with our open-source GPU-accelerated database engine CoGaDB and the popular star schema and TPC-H benchmarks.

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cover image ACM Conferences
SIGMOD '16: Proceedings of the 2016 International Conference on Management of Data
June 2016
2300 pages
ISBN:9781450335317
DOI:10.1145/2882903
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Publication History

Published: 26 June 2016

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Author Tags

  1. co-processing
  2. co-processor
  3. databases
  4. query optimization
  5. query processing

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SIGMOD/PODS'16: International Conference on Management of Data
June 26 - July 1, 2016
California, San Francisco, USA

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Cited By

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  • (2024)Heterogeneous Intra-Pipeline Device-Parallel AggregationsProceedings of the 20th International Workshop on Data Management on New Hardware10.1145/3662010.3663441(1-10)Online publication date: 10-Jun-2024
  • (2024)SIMDified Data Processing - Foundations, Abstraction, and Advanced TechniquesCompanion of the 2024 International Conference on Management of Data10.1145/3626246.3654694(613-621)Online publication date: 9-Jun-2024
  • (2024)On-The-Fly Data Distribution to Accelerate Query Processing in Heterogeneous Memory SystemsAdvances in Databases and Information Systems10.1007/978-3-031-70626-4_12(170-183)Online publication date: 1-Sep-2024
  • (2023)Distributed GPU Joins on Fast RDMA-capable NetworksProceedings of the ACM on Management of Data10.1145/35887091:1(1-26)Online publication date: 30-May-2023
  • (2023)Novel insights on atomic synchronization for sort-based group-by on GPUsDistributed and Parallel Databases10.1007/s10619-023-07424-241:3(387-409)Online publication date: 24-Apr-2023
  • (2022)Orchestrating data placement and query execution in heterogeneous CPU-GPU DBMSProceedings of the VLDB Endowment10.14778/3551793.355180915:11(2491-2503)Online publication date: 29-Sep-2022
  • (2022)Triton Join: Efficiently Scaling to a Large Join State on GPUs with Fast InterconnectsProceedings of the 2022 International Conference on Management of Data10.1145/3514221.3517911(1017-1032)Online publication date: 10-Jun-2022
  • (2022)Databases on Modern HardwareundefinedOnline publication date: 25-Feb-2022
  • (2021)Speculative Dynamic Reconfiguration and Table Prefetching Using Query Look-Ahead in the ReProVide Near-Data-Processing SystemDatenbank-Spektrum10.1007/s13222-020-00363-721:1(55-64)Online publication date: 4-Jan-2021
  • (2021)Accelerating multi-way joins on the GPUThe VLDB Journal — The International Journal on Very Large Data Bases10.1007/s00778-021-00708-y31:3(529-553)Online publication date: 2-Nov-2021
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