Paper by Erik D. Demaine

Erik D. Demaine, Ian Foster, Carl Kesselman, and Marc Snir, “Generalized Communicators in the Message Passing Interface”, IEEE Transactions on Parallel and Distributed Systems, volume 12, number 6, June 2001, pages 610–616.

We propose extensions to the Message Passing Interface (MPI) that generalize the MPI communicator concept to allow multiple communication endpoints per process, dynamic creation of endpoints, and the transfer of endpoints between processes. The generalized communicator construct can be used to express a wide range of interesting communication structures, including collective communication operations involving multiple threads per process, communications between dynamically created threads or processes, and object-oriented applications in which communications are directed to specific objects. Furthermore, this enriched functionality can be provided in a manner that preserves backward compatibility with MPI. We describe the proposed extensions, illustrate their use with examples, and describe a prototype implementation in the popular MPI implementation MPICH.

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The paper is 19 pages.

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Last updated March 26, 2017 by Erik Demaine.