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Performance Analysis of Scientific and Engineering Applications Using MPInside and TAUIn this paper, we present performance analysis of two NASA applications using performance tools like Tuning and Analysis Utilities (TAU) and SGI MPInside. MITgcmUV and OVERFLOW are two production-quality applications used extensively by scientists and engineers at NASA. MITgcmUV is a global ocean simulation model, developed by the Estimating the Circulation and Climate of the Ocean (ECCO) Consortium, for solving the fluid equations of motion using the hydrostatic approximation. OVERFLOW is a general-purpose Navier-Stokes solver for computational fluid dynamics (CFD) problems. Using these tools, we analyze the MPI functions (MPI_Sendrecv, MPI_Bcast, MPI_Reduce, MPI_Allreduce, MPI_Barrier, etc.) with respect to message size of each rank, time consumed by each function, and how ranks communicate. MPI communication is further analyzed by studying the performance of MPI functions used in these two applications as a function of message size and number of cores. Finally, we present the compute time, communication time, and I/O time as a function of the number of cores.
Document ID
20100038444
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Saini, Subhash (NASA Ames Research Center Moffett Field, CA, United States)
Mehrotra, Piyush (NASA Ames Research Center Moffett Field, CA, United States)
Taylor, Kenichi Jun Haeng (Silicon Graphics International Fremont, CA, United States)
Shende, Sameer Suresh (ParaTools, Inc. Eugene, OR, United States)
Biswas, Rupak (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 25, 2013
Publication Date
September 1, 2010
Subject Category
Computer Operations And Hardware
Report/Patent Number
ARC-E-DAA-TN1911
Meeting Information
Meeting: 12th IEEE HPCC conference
Location: Melbourne
Country: Australia
Start Date: September 1, 2010
End Date: September 3, 2010
Sponsors: Institute of Electrical and Electronics Engineers
Funding Number(s)
CONTRACT_GRANT: NAS0501140
Distribution Limits
Public
Copyright
Public Use Permitted.

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