Contribution to a conference proceedings/Contribution to a book

FZJ-2023-04994

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png An Event Model for Trace-Based Performance Analysis of MPI Partitioned Point-to-Point Communication

Thärigen, I. (Corresponding author)RWTH* ; Hermanns, M.-A.RWTH* ; Geimer, M.FZJ*

2023
ACM New York, NY, USA

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Please use a persistent id in citations: doi:10.1145/3624062.3624205  doi:10.34734/FZJ-2023-04994

Abstract: The MPI 4.0 standard introduced the concept of partitioned point-to-point communication. One facet that may help in encouraging application developers to use this new concept in their programs is the availability of proper tool support in a timely manner. In this paper, we therefore propose nine new events extending the OTF2 event model to accurately represent the runtime behavior of partitioned point-to-point communication. We then demonstrate the suitability of these extensions with three different use cases in the context of performance analysis. In particular, we showcase a prototype implementation of an extended waitstate analysis in the Scalasca trace analyzer, and discuss further potential use cases in the realm of trace visualization and simulation.

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)

Research Program(s):

1. 5112 - Cross-Domain Algorithms, Tools, Methods Labs (ATMLs) and Research Groups (POF4-511) (POF4-511)
2. ATMLPP - ATML Parallel Performance (ATMLPP) (ATMLPP)

Appears in the scientific report 2023

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