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ALCC Program Awards Nearly 6 Million Summit Node Hours across 31 Projects

Each year, researchers are awarded computing hours 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)—through the DOE Office of Advanced Scientific Computing Research’s (ASCR’s) Leadership Computing Challenge (ALCC). The ALCC program grants…
Will Wells
August 5, 2020
People

Cracking the Linux Code with the OLCF’s Ketan Maheshwari

The OLCF’s Ketan Maheshwari developed a tutorial on Linux productivity tools that provides Linux users with practical application techniques for the operating system. Image Credit: Jason Richards, ORNL 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…
Rachel McDowell
June 24, 2020
Science

Igniting a New Class of Combustion Research

In a farewell nod to Titan, scheduled to be decommissioned in August 2019, we present a short series of features highlighting some of Titan’s impactful contributions to scientific research. The internal combustion engine has been around since the 19th century and remains the most affordable, reliable way to power the…
Katie Elyce Jones
August 1, 2019
Science

ALCC Program Awards 6 Million Hours on OLCF Resources

Each year, researchers are awarded computing hours 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)—through the DOE Office of Advanced Scientific Computing Research’s (ASCR’s) Leadership Computing Challenge (ALCC). This year, 21 research…
Will Wells
July 31, 2019
Titan supercomputer OLCFTechnology

Farewell, Titan

The Cray XK7 Titan supercomputer operated by the Oak Ridge Leadership Computing Facility (OLCF) at the US Department of Energy’s (DOE’s) Oak Ridge National Laboratory (ORNL) will be decommissioned on August 1 and disassembled for recycling. Performing up to 27 quadrillion calculations per second, Titan ranked as one of the…
Katie Elyce Jones
June 28, 2019
People

ORNL Staff Plug into Tech Day

Last month, the US Department of Labor’s (DOL’s) Tech Day 2019 put federal agencies’ emerging technologies on display for the public, highlighting developments in 3D printing, cybersecurity, virtual reality, and more. Researchers from the US Department of Energy’s (DOE’s) Oak Ridge National Laboratory (ORNL) were among the participants in the…
Rachel McDowell
June 12, 2019
Science

CAAR Accepting Application Team Proposals for Frontier System

As details about the Frontier supercomputer emerge, the US Department of Energy’s (DOE’s) Oak Ridge Leadership Computing Facility (OLCF) is seeking partnerships with select applications teams to develop scientific applications for highly effective use on the Frontier system. Through its Center for Accelerated Application Readiness (CAAR), the OLCF will partner…
Jonathan Hines
May 7, 2019
Science

New Geometric Model Improves Predictions of Fluid Flow in Rock

Deep beneath the Earth’s surface, oil and groundwater percolate through gaps in rock and other geologic material. Hidden from sight, these critical resources pose a significant challenge for scientists seeking to evaluate the state of such two-phase fluid flows. Fortunately, the combination of supercomputing and synchrotron-based imaging techniques enables more…
Katie Elyce Jones
February 6, 2019
Technology

Network Enhancement Strengthens Ties Between OLCF, ESnet

ESnet provides services to more than 40 DOE research sites, including the entire national laboratory system, its major scientific instruments, and its supercomputing facilities such as the OLCF. The network permits DOE-funded scientists to productively collaborate with partners around the world. If data is the lifeblood of a scientific computing…
Jonathan Hines
January 17, 2019
PeopleTechnology

Ready for Science: Summit Completes System Acceptance

A year-long acceptance process for the 200-petaflop, IBM AC922 Summit supercomputer at the US Department of Energy’s Oak Ridge National Laboratory (ORNL) is complete. Acceptance testing ensures that the supercomputer and its file system meet the functionality, performance, and stability requirements agreed upon by the facility and the vendor. To…
Katie Elyce Jones
December 20, 2018
IndustryScience

Pinnacle Engines Develops Efficient, Low-Emission Gasoline Engine Using Supercomputing

https://vimeo.com/304393904The Pinnacle Engines opposed-piston cylinder shown in three different views. Visualizations illustrate the generation of coherent flow structures and their collapse during the compression stroke, which leads to high levels of turbulence before combustion. Pinnacle Engines researchers analyzed fluid dynamics and combustion behavior to optimize the design of the combustion…
Katie Elyce Jones
December 3, 2018
People

Mixed Precision: A Strategy for New Science Opportunities

OLCF computational scientist Wayne Joubert successfully exploited the Summit supercomputer’s low-precision capabilities to accelerate a genomics application to exascale speeds. Since the days of vector supercomputers, computational scientists have relied on high-precision arithmetic to accurately solve a wide range of problems, from modeling nuclear reactors to predicting supernova physics to…
Jonathan Hines
October 9, 2018