Distributed Region-Based Memory Allocation and Synchronization

Christi Symeonidou, Polyvios Pratikakis, Dimitrios S. Nikolopoulos, Angelos Bilas

Research output: Contribution to journalArticlepeer-review


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.
Original languageEnglish
Pages (from-to)406-414
Number of pages9
JournalInternational Journal of High Performance Computing Applications
Issue number4
Publication statusPublished - Nov 2014


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