Exploring Techniques for the Analysis of Spontaneous Asynchronicity in MPI-Parallel Applications

Afzal A, Hager G, Wellein G, Markidis S (2023)

Publication Language: English

Publication Type: Conference contribution

Publication year: 2023

Publisher: Springer, Cham

Book Volume: 13826

Conference Proceedings Title: Lecture Notes in Computer Science

Event location: Gdansk, Poland

DOI: 10.1007/978-3-031-30442-2_12

Open Access Link: https://link.springer.com/chapter/10.1007/978-3-031-30442-2_12

Abstract

This paper studies the utility of using data analytics and machine learning techniques for identifying, classifying, and characterizing the dynamics of large-scale parallel (MPI) programs. To this end, we run microbenchmarks and realistic proxy applications with the regular compute-communicate structure on two different supercomputing platforms and choose the per-process performance and MPI time per time step as relevant observables. Using principal component analysis, clustering techniques, correlation functions, and a new “phase space plot,” we show how desynchronization patterns (or lack thereof) can be readily identified from a data set that is much smaller than a full MPI trace. Our methods also lead the way towards a more general classification of parallel program dynamics.

Authors with CRIS profile

Ayesha Afzal Regionales Rechenzentrum Erlangen (RRZE) Georg Hager Regionales Rechenzentrum Erlangen (RRZE) Gerhard Wellein Professur für Höchstleistungsrechnen

Additional Organisation(s)

FAU Profilzentrum Licht.Materie.Quantentechnologien (FAU LMQ)

Involved external institutions

Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH) SE Sweden (SE)

How to cite

APA:

Afzal, A., Hager, G., Wellein, G., & Markidis, S. (2023). Exploring Techniques for the Analysis of Spontaneous Asynchronicity in MPI-Parallel Applications. In Wyrzykowski, R., Dongarra, J., Deelman, E., Karczewski, K. (Eds.), Lecture Notes in Computer Science. Gdansk, Poland: Springer, Cham.

MLA:

Afzal, Ayesha, et al. "Exploring Techniques for the Analysis of Spontaneous Asynchronicity in MPI-Parallel Applications." Proceedings of the 14th International Conference on Parallel Processing and Applied Mathematics, PPAM 2022, Gdansk, Poland Ed. Wyrzykowski, R., Dongarra, J., Deelman, E., Karczewski, K., Springer, Cham, 2023.

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