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High-End Computing at NASA 2007-2008
This new report features science and engineering highlights from across NASA's mission directorates and updates about the HEC Program's facilities and services.
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Stay up to date with what's happening in the NAS Division by browsing our news items, science highlights, and technical reports.
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NEWS & PRESS RELEASES
11.18.09 - NASA Supercomputer Ranks Among World's Fastest
NASA's Pleiades supercomputer at Ames Research Center has garnered the number 6 spot on the Top500 list of the world's most powerful computers.
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11.04.09 - NASA Showcases 'Green' Missions at SC09 Conference
Five NASA centers join forces this month to showcase "green" science, engineering, and technology achievements at SC09, the leading international conference on high-performance computing, networking,
storage, and analysis.
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05.20.09 - HEC Wide-Area Networking Transitioning to NISN May 27, 2009
NASA-internal wide-area networking services for the High-End Computing (HEC) Program are transitioning to the NASA Integrated Services
Network (NISN). HEC's new NISN services include a direct 10 gigabit-per-second network pathway between its two facilities.
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NAS TECHNICAL REPORTS
Early Performance Evaluation of a "Nehalem" Cluster Using Scientific and Engineering Applications
This paper presents an early performance evaluation of a 624-core cluster based on the Intel® Xeon Processor 5560 ("Nehalem-EP")—the first processor from Intel with NUMA architecture managed by an on-chip integrated
memory controller. Authors evaluate these features using the High Performance Computing Challenge benchmarks, NAS Parallel Benchmarks, and four full-scale scientific applications, comparing and contrasting performance
results of the Xeon 5560 with Intel's previous generations of quad-core processors.
Subhash Saini, Rupak Biswas, David Barkai, and Timothy Sandstrom
+ NAS-09-005 (PDF-2.3MB)
Large Scale Aerodynamic Calculation on Pleiades
This paper presents a very large scale aerodynamic calculation run on NASA's Pleiades supercomputer using the three-dimensional Navier-Stokes
code OVERFLOW. The application is a rotorcraft blade simulation, with attention focused on the resolution of the vortices,
which develop off the blade tips and propagate through the flow domain. This simulation represents a level of refinement beyond any
previous results presented for this problem.
Thomas H. Pulliam, Dennis C. Jespersen
+ NAS-09-004 (PDF-2.9MB)
Acceleration of a CFD Code with a GPU
This paper studies some of the issues in accelerating the computational fluid dynamics code OVERFLOW by using a Graphics
Processing Unit (GPU). OVERFLOW includes as one of its solver options an algorithm that is a fairly small piece of code but which
accounts for a significant portion of the total computational time. The algorithm was modified to be suitable for a GPU, and
attention was given to 64-bit and 32-bit arithmetic. Interestingly, the work done for the GPU produced ideas for accelerating the CPU code
and led to significant speedup on the CPU.
Dennis C. Jespersen
+ NAS-09-003 (PDF-820KB)
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NEWS ARCHIVE
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