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DOE OSTI · 2462981

Implementing One Sided Partitioned Communication in Open MPI

Dosanjh, Matthew Gurbachanfugels
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Abstract

This report introduces partitioned communication, a new MPI 4.0 interface that enables early bird communication by overlapping communication and computation. By partitioning messages into smaller sub-messages, MPI can start partial data transfers early. Performance studies show that the RMA implementation outperforms the Persistent implementation, despite some constraints. This report details a new opt-in RMA implementation, offering a high-performance option for partitioned communication that imposes some additional limitations.

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BibTeXRIS

Dosanjh, Matthew Gurbachanfugels. 2024-09-01. Implementing One Sided Partitioned Communication in Open MPI. https://doi.org/10.2172/2462981

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