NSF Org:	OCE Division Of Ocean Sciences
Recipient:	UNIVERSITY OF CALIFORNIA SAN DIEGO
Initial Amendment Date:	July 11, 2007
Latest Amendment Date:	May 27, 2008
Award Number:	0738004
Award Instrument:	Standard Grant
Program Manager:	Eric C. Itsweire OCE  Division Of Ocean Sciences GEO  Directorate for Geosciences
Start Date:	July 1, 2007
End Date:	December 31, 2008 (Estimated)
Total Intended Award Amount:	$0.00
Total Awarded Amount to Date:	$82,963.00
Funds Obligated to Date:	FY 2007 = $82,963.00
History of Investigator:	Kraig Winters (Principal Investigator) kraig@coast.ucsd.edu Dmitry Pekurovsky (Co-Principal Investigator)
Recipient Sponsored Research Office:	University of California-San Diego Scripps Inst of Oceanography 8622 DISCOVERY WAY # 116 LA JOLLA CA  US  92093-1500 (858)534-1293
Sponsor Congressional District:	50
Primary Place of Performance:	University of California-San Diego Scripps Inst of Oceanography 8622 DISCOVERY WAY # 116 LA JOLLA CA  US  92093-1500
Primary Place of Performance Congressional District:	50
Unique Entity Identifier (UEI):	QJ8HMDK7MRM3
Parent UEI:	QJ8HMDK7MRM3
NSF Program(s):	ITR FOR NATIONAL PRIORITIES
Primary Program Source:	app-0107
Program Reference Code(s):	0000, 9215, 9237, HPCC, OTHR
Program Element Code(s):	731400
Award Agency Code:	4900
Fund Agency Code:	4900
Assistance Listing Number(s):	47.050

ABSTRACT

Intellectual Merit
This exploratory project is to modify an existing fluid dynamics code to make it suitable for parallel execution on thousands of processors and to quantify the resulting scalability using performance analysis tools. The code is designed for high-resolution, three-dimensional simulations of stratified fluid flow and is typically used for process oriented studies in small-scale physical oceanography, atmospheric science and fluid dynamics. The code uses MPI and has been run on laptops, single and dual processor workstations, workstation clusters with various interconnect technologies, several high performance comptuers. The maximum number of processors on which it has been run is 768 on the National Center for Atmospheric Research (NCAR) Blue Ice machine. The primary activities for which support is requested are to incorporate a two-dimensional data decomposition and to utilize performance analysis tools to assess performance and document scalability.

Broader Impacts
The primary goal of this effort is to produce a well-tested, flexible fluid dynamics code based on high order numerical techniques that scales well to new high performance architectures. The source code and related tools will be made freely available and will be useful to researchers in oceanography, mathematics, fluid dynamics, physics and engineering. This effort will also enhance the capabilities of the open-source parallel, 3D FFT library distributed by SDSC by incorporating additional globally-based differentiation schemes.

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