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ORNL Researchers Develop Open-Source Mixed-Precision Benchmark Tool

As Frontier, the world’s first exascale supercomputer, was being assembled at the Oak Ridge Leadership Computing Facility in 2021, understanding its performance on mixed-precision calculations remained a difficult prospect. That gap in understanding wasn’t an oversight but rather a sign of just how novel supercomputer systems that excel at mixed…
Coury Turczyn
September 22, 2023
ScienceTechnology

From Summit to the Stars

The Oak Ridge Leadership Computing Facility (OLCF) wrapped up its 2021 hackathon with teams from around the globe working on projects that spanned the cosmos. Ten teams with a total of 71 participants from 21 organizations took part in the October hackathon hosted by the OLCF, home to Summit, the nation’s…
Matt Lakin
March 18, 2022
Technology

Simulating the Stars at Exascale Requires HIP Solutions

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 been re-engineered for GPUs must continually adapt them for new architectures. Evan Schneider of Princeton University, though, began developing her…
Rachel McDowell
March 5, 2020
Science

Can a UNICORN Outrun Earthquakes?

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, dam ruptures, flooding, and worse—if the sea floor is suddenly displaced during an earthquake, it can trigger a deadly tsunami.…
Rachel McDowell
November 13, 2019
Science

A New Parallel Strategy for Tackling Turbulence on Summit

Turbulence, the state of disorderly fluid motion, is a scientific puzzle of great complexity. Turbulence permeates many applications in science and engineering, including combustion, pollutant transport, weather forecasting, astrophysics, and more. One of the challenges facing scientists who simulate turbulence lies in the wide range of scales they must capture…
OLCF Staff Writer
November 13, 2019
GE's GENESIS solver (right) preserves many more wake details of interest in the flow field compared with a commercial solver (left). Image Credit: University of KansasScience

GPUs Power GE Code at OLCF Hackathons

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 is the speed at which they run. If a company can run a model more quickly, the number of possible…
Rachel McDowell
September 12, 2019
Science

CAAR Partnerships for Frontier Announced

In preparation for the Frontier supercomputer, the US Department of Energy’s (DOE’s) Oak Ridge Leadership Computing Facility (OLCF) has selected eight research projects to participate in its Center for Accelerated Application Readiness (CAAR) program. Through CAAR, the OLCF will partner with application core developers, vendor partners, and OLCF staff members…
Will Wells
September 4, 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
Technology

Summit Speeds Calculations in the Search for Exotic Particles

In pursuit of numerical predictions for exotic particles, researchers are simulating atom-building quark and gluon particles over 70 times faster on Summit, the world’s most powerful scientific supercomputer, than on its predecessor Titan at the US Department of Energy’s (DOE’s) Oak Ridge National Laboratory (ORNL). The interactions of quarks and…
Katie Elyce Jones
September 17, 2018
People

OLCF Readies Users for Summit

Now that the Oak Ridge Leadership Computing Facility (OLCF) has launched its IBM AC922 Summit supercomputer, staff members in the OLCF’s User Assistance and Outreach (UAO) Group are planning robust training events intended to enhance user experiences on the new system. Unlike the OLCF’s current Cray XK7 Titan supercomputer, which…
Rachel McDowell
June 26, 2018
Technology

Genomics Code Exceeds Exaops on Summit Supercomputer

Researchers at the US Department of Energy’s Oak Ridge National Laboratory broke the exascale barrier, achieving a peak throughput of 1.88 exaops—faster than any previously reported science application—while analyzing genomic data on the recently launched Summit supercomputer. The ORNL team achieved the feat, the equivalent to carrying out nearly 2…
Jonathan Hines
June 8, 2018