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OSTIblog Articles in the High-performance computing Topic

ACME - Perfecting Earth System Models

by Kathy Chambers 29 Oct, 2014 in

Earth system modeling as we know it and how it benefits climate change research is about to transform with the newly launched Accelerated Climate Modeling for Energy (ACME) project sponsored by the Earth System Modeling program within the Department of Energy’s (DOE) Office of Biological and Environmental Research.  ACME is an unprecedented collaboration among eight national laboratories, the National Center for Atmospheric Research, four academic institutions, and one private-sector company to develop and apply the most complete, leading-edge climate and earth system models to the most challenging and demanding climate-change issues.  They collectively represent a unique combination of scientific and engineering expertise as well as advanced computing and information technologies required to construct, maintain, and advance an earth system modeling capability that will help us better understand and address climate change.

The core of the ACME project is model development.  This element connects the scientific and energy mission needs with computing power provided by the DOE Office of Science.  The models created will be used to simulate changes in the hydrological cycle, with a specific focus on precipitation and surface water in orographically complex regions such as the western United States and the headwaters of the Amazon.  They will address biogeochemistry by examining how more complete treatments of nutrient cycles affect carbon-climate feedbacks, with a focus on tropical systems;...

Related Topics: Accelerated Climate Modeling for Energy, ACME, Advanced Scientific Computing Research, ASCR, climate change, earth systems modeling, High-performance computing, HPC, In the OSTI Collections, Supercomputers


A banner year expected for high-performance computing


A banner year expected for high-performance computing

Just seven miles south of our OSTI facility in Oak Ridge, Tennessee is a national treasure – the Oak Ridge National Laboratory (ORNL).  ORNL is DOE’s largest multi-program laboratory where remarkable scientific expertise and world-class scientific facilities and equipment are applied to develop scientific and technological solutions that are changing our world. ORNL’s National Center for Computational Sciences is home to two of ORNL’s high-performance computing projects -- the National Climate-Computing Research Center (NCRC), where research is dedicated to climate science, and the Oak Ridge Leadership Computing Facility (OLCF).  OLCF delivers the most powerful computational resource in the U.S. for open science, allowing the world’s best computational researchers an opportunity to tackle problems that would be unthinkable on other systems.

OLCF has such a remarkable history. It was established in 2004 to deliver a supercomputer 100 times more powerful than the leading systems of the day. Its Cray XT4 Jaguar ran the first scientific applications to exceed 1,000 trillion calculations a second (1 petaflop) in 2008. In preparation for the exascale, OLCF elicited petascale computational science requirements from the international science community and began to prepare for next-generation science. OLCF continued to expand the limits of the Jaguar in 2011 to deliver a peak performance of more than 2.3 petaflops becoming the world’s most powerful supercomputer. OLCF has now upgraded the Jaguar to...

Related Topics: High-performance computing, Jaguar, ORNL, SciTech Connect, Titan