DRASync: distributed region-based memory allocation and synchronization

  • Authors:
  • Christi Symeonidou;Polyvios Pratikakis;Angelos Bilas;Dimitrios S. Nikolopoulos

  • Affiliations:
  • FORTH-ICS;FORTH-ICS;FORTH-ICS;Queen's University of Belfast

  • Venue:
  • Proceedings of the 20th European MPI Users' Group Meeting
  • Year:
  • 2013

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Abstract

We present DRASync, a region-based allocator that implements a global address space abstraction for MPI programs with pointer-based data structures. The main features of DRASync are: (a) it amortizes communication among nodes to allow efficient parallel allocation in a global address space; (b) it takes advantage of bulk deallocation and good locality with pointer-based data structures. (c) it supports ownership semantics of regions by nodes akin to reader-writer locks, which makes for a high-level, intuitive synchronization tool in MPI programs, without sacrificing message-passing performance. We evaluate DRASync against a state-of-the-art distributed allocator and find that it produces comparable performance while offering a higher level abstraction to programmers.