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A Benchmark for Learned Indexes

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Search on Sorted Data Benchmark

Build Status

SOSD is a benchmark to compare (learned) index structures on equality lookup performance over densely packed, sorted data. It comes with state-of-the-art baseline implementations to compare against and many datasets to compare on. Each dataset consists of 200 million to 800 million 32-bit or 64-bit unsigned integers.

Dependencies

On vanilla Ubuntu 20.04 LTS:

sudo apt -y update
sudo apt -y install zstd python3-pip m4 cmake clang libboost-all-dev
pip3 install --user numpy scipy
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
source $HOME/.cargo/env

Usage instructions

We provide a number of scripts to automate things. Each is located in the scripts directory, but should be executed from the repository root.

Running the benchmark

  • ./scripts/download.sh downloads and stores required data from the Internet
  • ./scripts/build_rmis.sh compiles and builds the RMIs for each dataset
    • ./scripts/download_rmis.sh will download pre-built RMIs instead, which may be faster. You'll need to run build_rmis.sh if you want to measure build times on your platform.
  • ./scripts/prepare.sh constructs query workloads and compiles the benchmark
  • ./scripts/execute.sh executes the benchmark on each workload, storing the results in results. You can use the -c flag to output a .csv file of results rather than a .txt.

Build times can be long, as we make aggressive use of templates to ensure we do not accidentally measure vtable lookup time. For development, this can be annoying: you can set USE_FAST_MODE in config.h to disable some features and get a faster build time.

Cite

If you use this benchmark in your own work, please cite us:

@article{sosd-vldb,
  author    = {Ryan Marcus and
               Andreas Kipf and
               Alexander van Renen and
               Mihail Stoian and
               Sanchit Misra and
               Alfons Kemper and
               Thomas Neumann and
               Tim Kraska},
  title     = {Benchmarking Learned Indexes},
  journal   = {Proc. {VLDB} Endow.},
  volume    = {14},
  number    = {1},
  pages     = {1--13},
  year      = {2020}
}

@article{sosd-neurips,
  title={SOSD: A Benchmark for Learned Indexes},
  author={Kipf, Andreas and Marcus, Ryan and van Renen, Alexander and Stoian, Mihail and Kemper, Alfons and Kraska, Tim and Neumann, Thomas},
  journal={NeurIPS Workshop on Machine Learning for Systems},
  year={2019}
}

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A Benchmark for Learned Indexes

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