Results 141 to 150 of about 5,783 (171)

Engineering parallel symbolic programs in GPH

Concurrency: Practice and Experience, 1999
We investigate the claim that functional languages offer low-cost parallelism in the context of symbolic programs on modest parallel architectures. In our investigation we present the first comparative study of the construction of large applications in a parallel functional language, in our case in Glasgow Parallel Haskell (GPH). The applications cover
Hans-Wolfgang Loidl, Philip W. Trinder, Kevin Hammond, Sahalu B. Junaidu, Richard G. Morgan, Simon L. Peyton Jones   +5 more
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Impact Temperature Determination for GPHS Safety Testing

Nuclear Technology, 2020
Impact testing of general purpose heat sources (GPHSs) and their component GPHS clads is done to benchmark extensive safety calculations quantifying launch safety.
Jonathan G. Teague, Roberta N. Mulford
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GPHS‐RTG performance on the Galileo mission

AIP Conference Proceedings, 1991
The Galileo spacecraft, launched in October, 1989, is powered by two General Purpose Heat source‐Radioisotope Thermoelectric Generator (GPHS‐RTGs). These RTGs were designed, built, and tested by General Electric under contract from the Office of Special Applications of the Department of Energy (DOE).
Richard J. Hemler, Robert D. Cockfield
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Criticality Calculations for Step-2 GPHS Modules

AIP Conference Proceedings, 2008
The Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) will use an improved version of the General Purpose Heat Source (GPHS) module as its source of thermal power. This new version, referred to as the Step-2 GPHS Module, has additional and thicker layers of carbon fiber material (Fine Weaved Pierced Fabric) for increased strength over the ...
Ronald J. Lipinski, Danielle L. Hensen, Mohamed S. El-Genk   +2 more
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Program management approach for the GPHS-RTG program

AIP Conference Proceedings, 1995
The development and delivery of the power sources for the Galileo mission to explore Jupiter and the Ulysses mission to explore the Polar regions of the Sun presented a number of technical and management challenges to the spacecraft power community. This paper explores the relationships between the government, industry, and the national laboratories ...
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TUNING TASK GRANULARITY AND DATA LOCALITY OF DATA PARALLEL GPH PROGRAMS

Parallel Processing Letters, 2001
The performance of data parallel programs often hinges on two key coordination aspects: the computational costs of the parallel tasks relative to their management overhead — task granularity; and the communication costs induced by the distance between tasks and their data — data locality.
Hans-Wolfgang Loidl, Philip W. Trinder, Carsten Butz   +2 more
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GPH: An Efficient and Effective Perfect Hashing Scheme for GPU Architectures

Proceedings of the ACM on Management of Data
Hash tables are widely used to support fast lookup operations for various applications on key-value stores and relational databases. In recent years, hash tables have been significantly improved by utilizing the high memory bandwidth and large parallelism degree offered by Graphics Processing Units (GPUs).
Jiaping Cao, Le Xu, Man Lung Yiu, Jianbin Qin, Bo Tang 0016   +4 more
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GPHS-RTG launch accident analysis for Galileo and Ulysses

AIP Conference Proceedings, 1991
This paper presents the safety program conducted to determine the response of the General Purpose Heat Source (GPHS) Radioisotope Thermoelectric Generator (RTG) to potential launch accidents of the Space Shuttle for the Galileo and Ulysses missions. The National Aeronautics and Space Administration (NASA) provided definition of the Shuttle potential ...
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Spread of Plutonium in GPHS Modules: Evaluation of the Qualification RTG Graphites

AIP Conference Proceedings, 1994
As the General Purpose Heat Source (GPHS) clads are vented to permit exiting of helium resulting from the alpha decay of the plutonium‐238 radioisotope fuel, questions always arise as to how well the radioactivity is retained by the iridium vent and subsequent double layer of porous carbon composites.
Ernest W. Johnson, Mohamed S. El-Genk, Mark D. Hoover   +2 more
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An assessment of the response of the GPHS-RTG to potential accident environments

AIP Conference Proceedings, 1995
The Cassini spacecraft is designed to carry out an orbital tour of the Saturnian system and an investigation of the planet, its satellites, atmosphere, and ring system. The spacecraft will carry three Radioisotope Thermoelectric Generators (RGTs) to provide electrical power.
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