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Summer Internships Offer Students Hands-On Experience, Mentorship

OLCF interns are serving in programming, communications, and operations positions, and more. Since 1946, Oak Ridge Associated Universities and the US Department of Energy’s (DOE’s) Oak Ridge National Laboratory (ORNL) have partnered to provide internships in subject areas ranging from climate research to nuclear nonproliferation policy. In these 71 years,…
Josh Cunningham
August 9, 2017
Science

ALCC Program Awards 1 Billion Hours on OLCF Resources

Past ALCC project recipients have contributed to scientific discovery in the studies of energy efficiency, physics, materials science, and computer science. Each year, projects at the Oak Ridge Leadership Computing Facility (OLCF)—a US Department of Energy (DOE) Office of Science User Facility located at DOE’s Oak Ridge National Laboratory (ORNL)—are…
Josh Cunningham
August 9, 2017
People

OLCF Hosts CUDA Workshop for GPU Programming

A recent OLCF-hosted workshop, “Introduction to CUDA C/C++,” gave 40 students, interns, and researchers at ORNL a taste of lower-level programming on a GPU architecture. The 18,688 NVIDIA Tesla GPU accelerators in Titan, the Oak Ridge Leadership Computing Facility’s (OLCF’s) flagship supercomputer, can greatly boost code performance. Researchers interested in…
Rachel McDowell
August 9, 2017
Science

3-D Models Help Scientists Gauge Flood Impact

Heavy rainfall can cause rivers and drainage systems to overflow or dams to break, leading to flood events that bring damage to property and road systems as well potential loss of human life. One such event in 2008 cost $10 billion in damages for the entire state of Iowa. After…
Rachel McDowell
July 18, 2017
Science

How Hot Is Too Hot in Fusion?

Fusion, the energy that powers the stars, might one day provide abundant energy here on Earth. In a nuclear fusion reactor, the hot, charged gas known as plasma reaches out of this world temperatures at 150 million degrees Celsius, or 10 times hotter than the center of the sun. The…
Katie Elyce Jones
June 27, 2017
People

Annual User Meeting Spotlights Titan, Summit, and Deep Learning

One hundred twenty-three Oak Ridge Leadership Computing Facility (OLCF) users and staff members attended the annual OLCF User Meeting in May to share achievements on Titan, discuss the next big Summit supercomputer, and delve into deep learning concepts. The event, held May 23–25 at the US Department of Energy’s (DOE’s) Oak…
Rachel McDowell
June 27, 2017
Science

Putting the Pedal to the Metal in the Hunt for Alloys

High-temperature alloys, often used in power plants and automobile engines, are valued in engineering because they can withstand temperatures that are a high fraction of their melting point. Operating power plants and engines at higher temperatures typically allows for more efficient energy generation, so developing higher temperature alloys is desirable.…
Rachel McDowell
June 26, 2017
Science

Assembling Life’s Molecular Motor

Despite the grand diversity among living organisms, the molecule used to store and transmit energy within aerobic, or oxygen-using, cells is remarkably the same. From bacteria to fungi, plants, and animals, adenosine triphosphate (ATP) serves as the universal energy currency of life, fueling the processes cells need to survive and…
Jonathan Hines
May 9, 2017
People

OLCF Brings Petascale Computing to 2017 APS March Meeting

National Center for Computational Sciences Director of Science Jack Wells co-organized a focus session called “Computational Physics at the Petascale and Beyond” at the APS March Meeting 2017 to bring high-performance computing topics to the largest gathering of physicists in the world. For staff at the Oak Ridge Leadership Computing…
Rachel McDowell
May 9, 2017
People

OLCF Conference Calls Equip Users with System Knowledge

OLCF staff members led an Introduction to VisIt conference call, which taught users about the open source visualization and animation tool VisIt. Pictured here are (left, front to back) Dave Pugmire, Sherry Ray, and Bill Renaud with (right, front to back) Chris Fuson, Suzanne Parete-Koon, and Ashley Barker. Need support?…
Rachel McDowell
April 18, 2017
Science

A Real CAM-Do Attitude

Photosynthesis, the method plants use to convert energy from the sun into food, is a ubiquitous process many people learn about in elementary school. Almost all plants use photosynthesis to gather energy and stay alive. Not all photosynthetic processes are the same, though. In recent years, researchers have grown increasingly…
Eric Gedenk
April 18, 2017
Science

A Seismic Mapping Milestone

Because of Earth’s layered composition, scientists have often compared the basic arrangement of its interior to that of an onion. There’s the familiar thin crust of continents and ocean floors; the thick mantle of hot, semisolid rock; the molten metal outer core; and the solid iron inner core. But unlike…
Jonathan Hines
March 28, 2017
Technology

Multitasking Framework Accelerates Scientific Discovery

A visualization of the active site of the enzyme dihydrofolate reductase. OLCF staff worked with ORNL computational scientist Pratul Agarwal to integrate functional partitioning into his AMBER code, which he uses to sample rare conformations of proteins and enzymes. With FP, Agarwal can configure AMBER to analyze conformations on available…
Jonathan Hines
March 28, 2017
Melting in Two DimensionsScience

The Shape of Melting in Two Dimensions

https://vimeo.com/201923842 Snow falls in winter and melts in spring, but what drives the phase change in between? Although melting is a familiar phenomenon encountered in everyday life, playing a part in many industrial and commercial processes, much remains to be discovered about this transformation at a fundamental level. In 2015,…
Jonathan Hines
January 31, 2017