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Title: On Synchronisation and Memory Reuse in OpenSHMEM, In: OpenSHMEM 2016: OpenSHMEM and Related Technologies. Enhancing OpenSHMEM for Hybrid Environments

Conference · · OPENSHMEM AND RELATED TECHNOLOGIES: ENHANCING OPENSHMEM FOR HYBRID ENVIRONMENTS
 [1];  [1]
  1. Extreme Scale Systems Center, Oak Ridge National Laboratory, Oak Ridge, TN (United States)
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OpenSHMEM is an open standard for PGAS libraries that provides one-sided communication semantics. Since the standardisation process was completed in 2012, the OpenSHMEM API has seen a rapid succession of proposed extensions. Among these extensions is the addition of teams of processing element (PEs) for greater flexibility in defining PE subsets for problem decomposition. Adding further to this, spaces introduced the ability to manage memory exclusive to teams without the need for global synchronisation. However, one problem still remains that affects the usability of teams, and that is the need for the user to manage memory used internally by the implementation for synchronisation in collective operations. This paper explores the possibilities for moving this responsibility from the user to the implementation, as well as the consequences that may arise as a result. To this end, we describe three methods of implementation and discuss the implications of their use compared to traditional user management of synchronisation buffers.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
AC05-00OR22725
OSTI ID:
1567412
Journal Information:
OPENSHMEM AND RELATED TECHNOLOGIES: ENHANCING OPENSHMEM FOR HYBRID ENVIRONMENTS, Vol. 10007; Conference: Workshop on OpenSHMEM and Related Technologies, Baltimore, MD, August 2-4, 2016
Country of Publication:
United States
Language:
English

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conference January 2010

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Related Subjects

Computer Science