Preserving time in large-scale communication traces

Prasun Ratn, Frank Mueller, Bronis R. De Supinski, Martin Schulz

Publikation: Beitrag in Buch/Bericht/KonferenzbandKonferenzbeitragBegutachtung

36 Zitate (Scopus)

Abstract

Analyzing the performance of large-scale scientific applications is becoming increasingly difficult due to the sheer size of performance data gathered. Recent work on scalable communication tracing applies online interprocess compression to address this problem. Yet, analysis of communication traces requires knowledge about time progression that cannot trivially be encoded in a scalable manner during compression. We develop scalable time stamp encoding schemes for communication traces. At the same time, our work contributes novel insights into the scalable representation of time stamped data. We show that our representations capture sufficient information to enable what-if explorations of architectural variations and analysis for path-based timing irregularities while not requiring excessive disk space. We evaluate the ability of several time-stamped compressed MPI trace approaches to enable accurate timed replay of communication events. Our lossless traces are orders of magnitude smaller, if not near constant size, regardless of the number of nodes while preserving timing information suitable for application tuning or assessing requirements of future procurements. Our results prove timepreserving tracing without loss of communication information can scale in the number of nodes and time steps, which is a result without precedent.

OriginalspracheEnglisch
TitelICS'08 - Proceedings of the 2008 ACM International Conference on Supercomputing
Seiten46-55
Seitenumfang10
DOIs
PublikationsstatusVeröffentlicht - 2008
Extern publiziertJa
Veranstaltung22nd ACM International Conference on Supercomputing, ICS'08 - Island of Kos, Griechenland
Dauer: 7 Juni 200812 Juni 2008

Publikationsreihe

NameProceedings of the International Conference on Supercomputing

Konferenz

Konferenz22nd ACM International Conference on Supercomputing, ICS'08
Land/GebietGriechenland
OrtIsland of Kos
Zeitraum7/06/0812/06/08

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