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Scalable Dynamic Instrumentation for BlueGene/L [electronic resource].

Published:
Washington, D.C. : United States. Dept. of Energy, 2005.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:
PDF-file: 8 pages; size: 0.1 Mbytes
Additional Creators:
Lawrence Berkeley National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
Dynamic binary instrumentation for performance analysis on new, large scale architectures such as the IBM Blue Gene/L system (BG/L) poses new challenges. Their scale--with potentially hundreds of thousands of compute nodes--requires new, more scalable mechanisms to deploy and to organize binary instrumentation and to collect the resulting data gathered by the inserted probes. Further, many of these new machines don't support full operating systems on the compute nodes; rather, they rely on light-weight custom compute kernels that do not support daemon-based implementations. We describe the design and current status of a new implementation of the DPCL (Dynamic Probe Class Library) API for BG/L. DPCL provides an easy to use layer for dynamic instrumentation on parallel MPI applications based on the DynInst dynamic instrumentation mechanism for sequential platforms. Our work includes modifying DynInst to control instrumentation from remote I/O nodes and porting DPCL's communication to use MRNet, a scalable data reduction network for collecting performance data. We describe extensions to the DPCL API that support instrumentation of task subsets and aggregation of collected performance data. Overall, our implementation provides a scalable infrastructure that provides efficient binary instrumentation on BG/L.
Report Numbers:
E 1.99:ucrl-conf-215232
ucrl-conf-215232
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Note:
Published through SciTech Connect.
09/08/2005.
"ucrl-conf-215232"
Presented at: Workshop on Binary Instrumentation and Applications, St. Louis, MO, United States, Sep 18 - Sep 18, 2005.
Lee, G; Schulz, M; Ko, S Y; Ahn, D; de Supinski, B R; Rountree, B; Bernat, A.
Funding Information:
W-7405-ENG-48
View MARC record | catkey: 14345234