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About Rachel Harken

Rachel Harken is a science writer for the Oak Ridge Leadership Computing Facility.
Latest Posts | By Rachel Harken
Oak Ridge Leadership Computing Facility Fosters GCC Compiler Development with Mentor Contract
2 weeks ago

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

By  •  2 weeks 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
1 month ago

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

By  •  1 month ago  •  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 months ago

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

By  •  2 months 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
3 months ago

Summit Helps Predict Molecular Breakups

By  •  3 months ago  •  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
3 months ago

Cracking the Linux Code with the OLCF’s Ketan Maheshwari

By  •  3 months 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
4 months ago

Knocking Out Drug Side Effects with Supercomputing

By  •  4 months ago  •  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
4 months ago

Supercomputing Aids Scientists Seeking Therapies for Deadly Bacterial Disease

By  •  4 months ago  •  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
6 months ago

OLCF Offers New Workload Capabilities with Slate Service

By  •  6 months 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
6 months ago

New Job Step Viewer Tool Captures Job Launching on Summit

By  •  6 months 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
6 months ago

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

By  •  6 months 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
7 months ago

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

By  •  7 months ago  •  Featured, 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
7 months ago

Simulating the Stars at Exascale Requires HIP Solutions

By  •  7 months 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
7 months ago

Machine Learning for Better Drug Design

By  •  7 months 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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Eight Teams Successfully Running on First NVIDIA and Arm Test Bed, Wombat at the OLCF
8 months ago

Eight Teams Successfully Running on First NVIDIA and Arm Test Bed, Wombat at the OLCF

By  •  8 months ago  •  Technology

Alongside the regular high-performance computing (HPC) resources at supercomputing centers are test beds, small computing clusters that offer HPC experts a chance to explore new architectures before they are considered …
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OLCF Staff Involved in Khronos Effort to Create New Visualization Standard
8 months ago

OLCF Staff Involved in Khronos Effort to Create New Visualization Standard

By  •  8 months ago  •  Technology

To those outside the high-performance computing community, supercomputers are a mysterious breed. Rows of refrigerator-sized cabinets span the length of an entire room, connected in an ensemble of fiber-optic cables …
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Record-Breaking Year for OLCF GPU Hackathons Ends with Annual Knoxville, Tennessee, Event
9 months ago

Record-Breaking Year for OLCF GPU Hackathons Ends with Annual Knoxville, Tennessee, Event

By  •  9 months ago  •  Events

In late October, the Oak Ridge Leadership Computing Facility (OLCF) wrapped up its 2019 hackathon series with an event hosted at the Crowne Plaza Hotel in downtown Knoxville, Tennessee, that …
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