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Towards Community Detection on Heterogeneous Platforms

  • Stijn Heldens
  • Ana Lucia Varbanescu
  • Arnau Prat-Pérez
  • Josep-Lluis Larriba-Pey
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9523)

Abstract

Over the last decade, community detection has become an increasingly important topic of research due to its many applications in different fields of research, such as biology and sociology. One example of a modern community detection algorithm is Scalable Community Detection (SCD), which has been shown to produce high-quality results, but its performance remains an issue on large graphs. In this work, we demonstrate how SCD can benefit from the heterogeneity offered by hybrid CPU-GPU platforms by presenting Het-SCD: a heterogeneous version of SCD which combines the larger memory capacity of the CPU with the larger computational power of the GPU. To enable this, we have designed an entirely new version of SCD which efficiently uses the fine-grained parallelism of GPUs. We report performance results on six real-world graphs (up to 1.8 B edges) and six platforms. We observe excellent performance for only the GPU (e.g., 70x speedup over sequential CPU version on graph of 117 M edges) and for combining the CPU and GPU (e.g., 40x speedup for same graph on low-end GPU with insufficient memory to store entire dataset). These results demonstrate that Het-SCD is an excellent solution for large-scale community detection, since it provides high performance while preserving the high quality of the original algorithm.

Keywords

Community detection Heterogeneous computing GPU computing SCD algorithm WCC metric 

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Stijn Heldens
    • 1
  • Ana Lucia Varbanescu
    • 1
  • Arnau Prat-Pérez
    • 2
  • Josep-Lluis Larriba-Pey
    • 2
  1. 1.Informatics InstituteUniversity of AmsterdamAmsterdamThe Netherlands
  2. 2.DAMA-UPCUniversitat Politèchnica de CatalunyaBarcelonaSpain

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