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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 73 records · Page 4
All sourcesNASA NTRSDOE OSTI
DOE OSTI2017

Scaling tests of a new algorithm for DFT hybrid-functional calculations on Trinity Haswell

We show scaling results for materials of interest in Sandia Radiation-Effects and High-Energy-Density-Physics Mission Areas. Each timing is from a self-consistent calculation for bulk material. Two timings are given: (1) walltime for the construction of the CR exchange operator (Exchange-Operator) and (2) walltime for everything else (non-Exchange-Operator).

97 MATHEMATICS AND COMPUTING↗
DOE OSTI2017

FY17 ASC P&EM L2 Milestone 6009: Demonstrate Thread Scalability within Aria on Both Sides of Trinity

The use of next-generation platforms (NGPs), also known as advanced technology systems (ATS), that incorporate many-core and heterogeneous architectures for scientific computing represent a tectonic shift in computing hardware design that will require massive development work within the Sierra applications to harness these systems to their full potential. The completion of this milestone represents a first step towards this effort by threading many of the computational kernels within Sierra/Aria.

97 MATHEMATICS AND COMPUTING↗
DOE OSTI2020

Witnessing Trinity. The test’s success was met with surprise, relief, fear

They witnessed the moment the world changed forever. A few hundred scientists, engineers and soldiers gathered in the New Mexico desert during the early morning hours of July 16, 1945. It was the culmination of years of work at a secret lab in Los Alamos led by J. Robert Oppenheimer.

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEF↗
DOE OSTI2021

Trinity

The Manhattan Project was established in August 1942. Its mission: beat the Nazis to the atomic bomb. Los Alamos was selected as the site for the weapons design laboratory. J. Robert Oppenheimer served as the Laboratory’s director. In early summer 1944, Los Alamos scientists discovered plutonium would not work in a gun assembly. Thus, Oppenheimer reorganized the Laboratory to build an implosion bomb

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEF↗