Software

FZJ-2025-00868

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Score-P: Scalable performance measurement infrastructure for parallel codes (v8.4)

Feld, C. (Corresponding author)FZJ* ; Jäkel, R. ; Lorenz, D. ; Wesarg, B. ; Schmidl, D. ; Tschüter, R. ; Oleynik, Y. ; Wagner, M. ; Eschweiler, D. ; Spazier, J. ; Knüpfer, A. ; Shende, S. ; Millstein, S. ; Biersdorff, S. ; Geimer, M.FZJ* ; Schlütter, M.FZJ* ; Schmitt, F. ; Ziegenbalg, J. ; Zhukov, I.FZJ* ; Dietrich, R. ; Geyer, R. ; Saviankou, P.FZJ* ; Knobloch, M.FZJ* ; Mijaković, R. ; Schöne, R. ; Winkler, F. ; Ilsche, T. ; Hermanns, M.-A.FZJ* ; Brendel, R. ; Oeste, S. ; Herold, C. ; Sigl, S. ; Hilbrich, T. ; Williams, B. ; Klotz, S. ; Corbin, G.FZJ* ; Reuter, J. A.FZJ* ; Grund, A. ; Sander, M. ; Frenzel, J.

2024

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Please use a persistent id in citations: doi:10.5281/ZENODO.10822140

Abstract: The instrumentation and measurement framework Score-P, together with analysis tools build on top of its output formats, provides insight into massively parallel HPC applications, their communication, synchronization, I/O, and scaling behaviour to pinpoint performance bottlenecks and their causes. Score-P is a highly scalable and easy-to-use tool suite for profiling (summarizing program execution) and event tracing (capturing events in chronological order) of HPC applications. The scorep instrumentation command adds instrumentation hooks into a user's application by either prepending or replacing the compile and link commands. C, C++, Fortran, and Python codes as well as contemporary HPC programming models (MPI, threading, GPUs, I/O) are supported. When running an instrumented application, measurement event data is provided by the instrumentation hooks to the measurement core. There, the events are augmented with high-accuracy timestamps and potentially hardware counters (a plugin-API allows querying additional metric sources). The augmented events are then passed to one or both of the built-in event consumers, profiling and tracing (a plugin-API allows creation of additional event consumers) which finally provide output in the formats CUBE4 and OTF2, respectively. Score-P is available under the 3-clause BSD Open Source license.

Keyword(s): Performance measurement ; Score-P ; instrumentation ; sampling ; HPC ; profiling ; tracing

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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)

Appears in the scientific report 2024

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