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Astrophysics

OLCF researchers win R&D 100 award
7 months ago

OLCF researchers win R&D 100 award

By  •  7 months ago  •  Featured, Industry, People

A team that includes researchers from the Oak Ridge Leadership Computing Facility recently received an R&D 100 Award for their work on Flash-X, a multiphysics simulation software package with applications …
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Forging Ahead with Frontier: Ready to Crush Science
1 year ago

Forging Ahead with Frontier: Ready to Crush Science

By  •  1 year ago  •  Featured, Science

Computational users at the Oak Ridge Leadership Computing Facility (OLCF) are running scientific codes on Frontier’s architecture in the form of a powerful test system at the OLCF called Crusher.


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From Summit to the Stars
1 year ago

From Summit to the Stars

By  •  1 year ago  •  Featured, Science, Technology

The Oak Ridge Leadership Computing Facility (OLCF) wrapped up its 2021 hackathon with teams from around the globe working on projects that spanned the cosmos.

Ten teams with a total of …
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Unraveling the “Big Boom”
1 year ago

Unraveling the “Big Boom”

By  •  1 year ago  •  Featured, Science

Simulations performed on Oak Ridge National Laboratory’s Summit supercomputer provide a more detailed look at how stars die and could help unlock new insights into the origins of Earth’s heavy …
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Scientists Tap Supercomputing to Study Exotic Matter in Stars
2 years ago

Scientists Tap Supercomputing to Study Exotic Matter in Stars

By  •  2 years ago  •  Featured, Science

At the heart of some of the smallest and densest stars in the universe lies nuclear matter that might exist in never-before-observed exotic phases. Neutron stars, which form when the …
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DOE and NCSA Supercomputing Speed Studies into Black Hole Origins
3 years ago

DOE and NCSA Supercomputing Speed Studies into Black Hole Origins

By  •  3 years ago  •  Featured, Science

Five years ago this month, the Laser Interferometer Gravitational-wave Observatory, or LIGO, made its first detection of gravitational waves, marking a historic event in the astrophysics community. Since then, LIGO …
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OLCF Names New Director of Science
3 years ago

OLCF Names New Director of Science

By  •  3 years ago  •  People

Bronson Messer—a computational astrophysicist, Distinguished Scientist in the Scientific Computing and Theoretical Physics groups at the US Department of Energy’s (DOE’s) Oak Ridge National Laboratory (ORNL), and a former Jeopardy!
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Simulating the Stars at Exascale Requires HIP Solutions
3 years ago

Simulating the Stars at Exascale Requires HIP Solutions

By  •  3 years ago  •  Technology

As GPU architectures have become the standard for scientific computing, application teams have had to retrofit their scientific codes to run on new systems. Even teams with codes that have …
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The Last User of Titan
3 years ago

The Last User of Titan

By  •  3 years ago  •  People, Science

Titan, the groundbreaking Cray XK7 supercomputer operated by the Oak Ridge Leadership Computing Facility (OLCF) at the US Department of Energy’s (DOE’s) Oak Ridge National Laboratory (ORNL), was officially decommissioned …
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Galactic Winds Demystified
4 years ago

Galactic Winds Demystified

By  •  4 years ago  •  Science

Using the Titan supercomputer at the US Department of Energy’s Oak Ridge National Laboratory, a team of astrophysicists created a set of galactic wind simulations of the highest resolution ever …
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PPPL’s Will Fox Honored for Research on Titan
4 years ago

PPPL’s Will Fox Honored for Research on Titan

By  •  4 years ago  •  Science

Will Fox, a research scientist at the US Department of Energy’s (DOE’s) Princeton Plasma Physics Laboratory (PPPL) and long-time user of the Oak Ridge Leadership Computing Facility (OLCF), has received …
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Science at Exascale: Tracing the Origins of Matter in Star Explosions
4 years ago

Science at Exascale: Tracing the Origins of Matter in Star Explosions

By  •  4 years ago  •  Science

Frontier is an exascale computer planned for delivery at the Oak Ridge Leadership Computing Facility in 2021. The system will support a wide range of scientific applications for advanced modeling …
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OLCF Scientist Talks Early Summit Results at APS Meeting
4 years ago

OLCF Scientist Talks Early Summit Results at APS Meeting

By  •  4 years ago  •  People

Bronson Messer, a computational scientist at the Oak Ridge Leadership Computing Facility (OLCF), gave an invited talk at the American Physical Society’s (APS’s) “Quarks to the Cosmos” April meeting in …
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OLCF 25: Revealing Supernova Secrets
5 years ago

OLCF 25: Revealing Supernova Secrets

By  •  5 years ago  •  OLCF History

In 2017, the Oak Ridge Leadership Computing Facility celebrated 25 years of leadership in high-performance computing. This article is part of a series summarizing a dozen significant contributions to science …
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OLCF 25: Illuminating Dark Matter
5 years ago

OLCF 25: Illuminating Dark Matter

By  •  5 years ago  •  OLCF History

In 2017, the Oak Ridge Leadership Computing Facility celebrated 25 years of leadership in high-performance computing. This article is part of a series summarizing a dozen significant contributions to science …
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OLCF Team Resolves Performance Bottleneck in OpenACC Code
7 years ago

OLCF Team Resolves Performance Bottleneck in OpenACC Code

By  •  7 years ago  •  Technology

A team at the Oak Ridge Leadership Computing Facility recently addressed a performance bottleneck in one portion of an OLCF user’s application. Because of its efforts, the user’s team saw a sixfold performance improvement in the code.
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