SciTech Connect

Title: High Performance Computing Facility Operational Assessment, CY 2011 Oak Ridge Leadership Computing Facility

High Performance Computing Facility Operational Assessment, CY 2011 Oak Ridge Leadership Computing Facility Oak Ridge National Laboratory's Leadership Computing Facility (OLCF) continues to deliver the most powerful resources in the U.S. for open science. At 2.33 petaflops peak performance, the Cray XT Jaguar delivered more than 1.4 billion core hours in calendar year (CY) 2011 to researchers around the world for computational simulations relevant to national and energy security; advancing the frontiers of knowledge in physical sciences and areas of biological, medical, environmental, and computer sciences; and providing world-class research facilities for the nation's science enterprise. Users reported more than 670 publications this year arising from their use of OLCF resources. Of these we report the 300 in this review that are consistent with guidance provided. Scientific achievements by OLCF users cut across all range scales from atomic to molecular to large-scale structures. At the atomic scale, researchers discovered that the anomalously long half-life of Carbon-14 can be explained by calculating, for the first time, the very complex three-body interactions between all the neutrons and protons in the nucleus. At the molecular scale, researchers combined experimental results from LBL's light source and simulations on Jaguar to discover how DNA replication continues past a damaged site so a mutation can be repaired later. Other more » researchers combined experimental results from ORNL's Spallation Neutron Source and simulations on Jaguar to reveal the molecular structure of ligno-cellulosic material used in bioethanol production. This year, Jaguar has been used to do billion-cell CFD calculations to develop shock wave compression turbo machinery as a means to meet DOE goals for reducing carbon sequestration costs. General Electric used Jaguar to calculate the unsteady flow through turbo machinery to learn what efficiencies the traditional steady flow assumption is hiding from designers. Even a 1% improvement in turbine design can save the nation billions of gallons of fuel. « less
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Publication Date:
OSTI Identifier:OSTI ID: 1036210
Report Number(s):ORNL/TM-2012/100
TRN: US201206%%365
DOE Contract Number:DE-AC05-00OR22725
Resource Type:Technical Report
Research Org:Oak Ridge National Laboratory (ORNL); Center for Computational Sciences
Sponsoring Org:USDOE
Country of Publication:United States
Language:English
Subject: 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; BIOETHANOL; CARBON 14; CARBON SEQUESTRATION; COMPRESSION; CRAY COMPUTERS; DNA REPLICATION; ENERGY SECURITY; HALF-LIFE; LIGHT SOURCES; MACHINERY; MOLECULAR STRUCTURE; MUTATIONS; NEUTRON SOURCES; NEUTRONS; PROTONS; SHOCK WAVES; SPALLATION; STEADY FLOW; TURBINES; UNSTEADY FLOW OLCF Operational Assessment OA