Enabling callback-driven runtime introspection via MPI_T

Marc André Hermanns, Nathan T. Hjlem, Michael Knobloch, Kathryn Mohror, Martin Schulz

Publikation: Beitrag in Buch/Bericht/KonferenzbandKonferenzbeitragBegutachtung

3 Zitate (Scopus)

Abstract

Understanding the behavior of parallel applications that use the Message Passing Interface (MPI) is critical for optimizing communication performance. Performance tools for MPI currently rely on the PMPI Profiling Interface or the MPI Tools Information Interface, MPI_T, for portably collecting information for performance measurement and analysis. While tools using these interfaces have proven to be extremely valuable for performance tuning, these interfaces only provide synchronous information, i.e., when an MPI or an MPI_T function is called. There is currently no option for collecting information about asynchronous events from within the MPI library. In this work we propose a callback-driven interface for event notification from MPI implementations. Our approach is integrated in the existing MPI_T interface and provides a portable API for tools to discover and register for events of interest. We demonstrate the functionality and usability of the interface with a prototype implementation in Open MPI, a small logging tool (MEL) and the measurement infrastructure Score-P.

OriginalspracheEnglisch
TitelEuroMPI 2018 - Proceedings of the 25th European MPI Users' Group Meeting
Herausgeber (Verlag)Association for Computing Machinery
ISBN (elektronisch)9781450364928
DOIs
PublikationsstatusVeröffentlicht - 23 Sept. 2018
Veranstaltung25th European MPI Users' Group Meeting, EuroMPI 2018 - Barcelona, Spanien
Dauer: 23 Sept. 201826 Sept. 2018

Publikationsreihe

NameACM International Conference Proceeding Series

Konferenz

Konferenz25th European MPI Users' Group Meeting, EuroMPI 2018
Land/GebietSpanien
OrtBarcelona
Zeitraum23/09/1826/09/18

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