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

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

By  •  2 weeks 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 weeks ago

OLCF Staff Involved in Khronos Effort to Create New Visualization Standard

By  •  2 weeks 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
1 month ago

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

By  •  1 month 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
2 months ago

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

By  •  2 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
3 months ago

Modeling Every Building in America Starts with Chattanooga

By  •  3 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?
3 months ago

Can a UNICORN Outrun Earthquakes?

By  •  3 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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AI for Plant Breeding in an Ever-Changing Climate
3 months ago

AI for Plant Breeding in an Ever-Changing Climate

By  •  3 months ago  •  Featured, Science

How might artificial intelligence (AI) impact agriculture, the food industry, and the field of bioengineering? Dan Jacobson, a research and development staff member in the Biosciences Division at the US …
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Gordon Bell Finalist Team Tackles Transistors with New Programming Paradigm
3 months ago

Gordon Bell Finalist Team Tackles Transistors with New Programming Paradigm

By  •  3 months ago  •  Featured, Science

Transistors, tiny semiconductor devices that switch electricity on or off, revolutionized the electronics field when they were discovered in 1947. Originally half-inch-high pieces of germanium, transistors today are mainly composed …
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Search for Lightweight Alloying Solutions Earns Team a Gordon Bell Finalist Nomination
3 months ago

Search for Lightweight Alloying Solutions Earns Team a Gordon Bell Finalist Nomination

By  •  3 months ago  •  Featured, Science

Alloys—mixtures of two or more metals—are designed to be stronger, more ductile (pliable), or more durable than pure elements. Steel is one of the most popular alloy materials, but its …
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Chromosome Connectors Take Center Stage for ORNL Scientists Studying Poplar
4 months ago

Chromosome Connectors Take Center Stage for ORNL Scientists Studying Poplar

By  •  4 months ago  •  Featured, Science

The black cottonwood tree, or Populus trichocarpa (poplar), serves as a model organism for scientists studying the structure, growth, development, and genetics of plants. Poplar was the first tree genome scientists …
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ORNL Staff Highlight OpenACC’s Role in HPC at Annual Meeting
5 months ago

ORNL Staff Highlight OpenACC’s Role in HPC at Annual Meeting

By  •  5 months ago  •  Events

OpenMP and OpenACC are widely used directive-based application program interfaces (APIs) that allow computer scientists and engineers to program applications on shared memory and accelerator architectures on high-performance computing (HPC) …
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GPUs Power GE Code at OLCF Hackathons
5 months ago

GPUs Power GE Code at OLCF Hackathons

By  •  5 months ago  •  Featured, Science

The ability to simulate turbulent phenomena using high-performance computing (HPC) can provide industry with important insights for efficient engine design. Second only to the ability to perform these critical simulations …
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