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About Rachel McDowell

Rachel McDowell is a science writer for the Oak Ridge Leadership Computing Facility.
Latest Posts | By Rachel McDowell
NASA Team Releases Mars Landing Simulation Data to Encourage New Research into Spacecraft Descent Technologies
2 years ago

NASA Team Releases Mars Landing Simulation Data to Encourage New Research into Spacecraft Descent Technologies

By  •  2 years ago  •  Technology

Scientists at NASA aim to one day land giant payloads on Mars, but safely descending passengers, flight crew, and other equipment in an atmosphere much thinner than Earth’s poses a …
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Runs on Summit Provided Data for Cray’s New Networking Benchmark
2 years ago

Runs on Summit Provided Data for Cray’s New Networking Benchmark

By  •  2 years ago  •  Technology

Companies that design the networks that allow compute systems to share information often rely on certain benchmarks to test how well their networks perform.

But the traditional benchmarks that measure …
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Powering Frontier
2 years ago

Powering Frontier

By  •  2 years ago  •  People

The US Department of Energy’s (DOE’s) Oak Ridge National Laboratory (ORNL) is poised to deliver Frontier, its first exascale supercomputer, next year. Exascale systems are capable of operating at 1 …
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Oak Ridge Leadership Computing Facility Fosters GCC Compiler Development with Mentor Contract
2 years ago

Oak Ridge Leadership Computing Facility Fosters GCC Compiler Development with Mentor Contract

By  •  2 years ago  •  Technology

The computational scientists who run codes on the massively powerful supercomputers at the Oak Ridge Leadership Computing Facility (OLCF) are working on solving some of the world’s most challenging problems. …
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Sparks Fly in Marriage of GE’s GENESIS Code and the Summit Supercomputer
2 years ago

Sparks Fly in Marriage of GE’s GENESIS Code and the Summit Supercomputer

By  •  2 years ago  •  Featured, Science

General Electric (GE)—a company well-known for its contributions to aviation, power, renewable energy, and more—aims to design gas turbine jet engines that are world leading in efficiency, emissions, and durability. …
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Computational Gene Study Suggests New Pathway for COVID-19 Inflammatory Response
2 years ago

Computational Gene Study Suggests New Pathway for COVID-19 Inflammatory Response

By  •  2 years ago  •  Featured, Science

Analyses of lung fluid cells from COVID-19 patients conducted on the nation’s fastest supercomputer point to gene expression patterns that may explain the runaway symptoms produced by the body’s response …
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Summit Helps Predict Molecular Breakups
2 years ago

Summit Helps Predict Molecular Breakups

By  •  2 years ago  •  Featured, Science

Designing materials with certain properties is the first step to making computer chips that can store more information, superconductors that could help to solve the world’s energy problems, and drugs …
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Cracking the Linux Code with the OLCF’s Ketan Maheshwari
2 years ago

Cracking the Linux Code with the OLCF’s Ketan Maheshwari

By  •  2 years ago  •  People

The Linux operating system is used to run processes both on the Oak Ridge Leadership Computing Facility’s (OLCF’s) Summit—the world’s most powerful and smartest supercomputer—and on other systems such as …
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Knocking Out Drug Side Effects with Supercomputing
2 years ago

Knocking Out Drug Side Effects with Supercomputing

By  •  2 years ago  •  Featured, Science

Psychedelic drugs could be effective in treating psychiatric disorders such as depression and post-traumatic stress disorder, but medical use of these drugs is limited by the hallucinations they cause.

“What …
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Supercomputing Aids Scientists Seeking Therapies for Deadly Bacterial Disease
2 years ago

Supercomputing Aids Scientists Seeking Therapies for Deadly Bacterial Disease

By  •  2 years ago  •  Featured, Science

Francisella tularensis, a bacterium that causes the illness tularemia (also known as “rabbit fever”), is one of the most hostile organisms on the planet. Once the bacterium enters the body …
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OLCF Offers New Workload Capabilities with Slate Service
2 years ago

OLCF Offers New Workload Capabilities with Slate Service

By  •  2 years ago  •  Technology

The large scientific simulations users at the Oak Ridge Leadership Computing Facility (OLCF) run on the center’s IBM AC922 Summit supercomputer almost always require other attendant tasks to fully realize …
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New Job Step Viewer Tool Captures Job Launching on Summit
2 years ago

New Job Step Viewer Tool Captures Job Launching on Summit

By  •  2 years ago  •  Technology

Before computational users launch large scientific jobs on the Oak Ridge Leadership Computing Facility’s (OLCF’s) IBM AC922 Summit supercomputer, they need to understand how they will use the full power …
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ORNL Scientists Tap into AI to Put a New Spin on Neutron Experiments
2 years ago

ORNL Scientists Tap into AI to Put a New Spin on Neutron Experiments

By  •  2 years ago  •  Science

Scientists seek to use quantum materials—those that have correlated order at the subatomic level—for electronic devices, quantum computers, and superconductors. Quantum materials owe many of their properties to the physics …
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ORNL Team Enlists World’s Fastest Supercomputer to Combat the Coronavirus
2 years ago

ORNL Team Enlists World’s Fastest Supercomputer to Combat the Coronavirus

By  •  2 years ago  •  Science

Researchers at the US Department of Energy’s (DOE’s) Oak Ridge National Laboratory (ORNL) have used the world’s most powerful and smartest supercomputer, the IBM AC922 Summit, to identify 77 small-molecule drug …
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Simulating the Stars at Exascale Requires HIP Solutions
2 years ago

Simulating the Stars at Exascale Requires HIP Solutions

By  •  2 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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Machine Learning for Better Drug Design
2 years ago

Machine Learning for Better Drug Design

By  •  2 years ago  •  Featured, Science

When Harel Weinstein and his team at the Joan & Sanford I. Weill Medical College (Weill Cornell Medicine) of Cornell University set out to learn the molecular mechanisms of drugs, …
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