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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
OLCF Offers New Workload Capabilities with Slate Service
1 day ago

OLCF Offers New Workload Capabilities with Slate Service

By  •  1 day 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
1 day ago

New Job Step Viewer Tool Captures Job Launching on Summit

By  •  1 day 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
1 day ago

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

By  •  1 day ago  •  Featured, 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
3 weeks ago

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

By  •  3 weeks 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
3 weeks ago

Simulating the Stars at Exascale Requires HIP Solutions

By  •  3 weeks 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
1 month ago

Machine Learning for Better Drug Design

By  •  1 month 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
2 months ago

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

By  •  2 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
2 months ago

OLCF Staff Involved in Khronos Effort to Create New Visualization Standard

By  •  2 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
3 months ago

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

By  •  3 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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Tiny Transistor Leads to Big Win for ETH Zurich, 2019 ACM Gordon Bell Prize Winner
4 months ago

Tiny Transistor Leads to Big Win for ETH Zurich, 2019 ACM Gordon Bell Prize Winner

By  •  4 months ago  •  Featured, Science

A team from ETH Zürich has been awarded the 2019 Association for Computing Machinery’s (ACM’s) Gordon Bell Prize for its work simulating quantum transport—or the transport of electric charge carriers …
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Modeling Every Building in America Starts with Chattanooga
5 months ago

Modeling Every Building in America Starts with Chattanooga

By  •  5 months ago  •  Featured, Science

Buildings use 40 percent of America’s primary energy and 75 percent of its electricity, which can jump to 80 percent when a majority of the population is at home using …
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Can a UNICORN Outrun Earthquakes?
5 months ago

Can a UNICORN Outrun Earthquakes?

By  •  5 months ago  •  Featured, Science

Each year, anywhere from a few hundred to tens of thousands of deaths are attributed to the catastrophic effects of major earthquakes. Apart from ground shaking, earthquake hazards include landslides, …
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