LAB REPORT

Science and Technology Making Headlines

April 23, 2021


corona

Under a new agreement, AMD will supply upgraded graphics accelerators for Lawrence Livermore National Laboratory’s Corona supercomputing cluster.

Corona vs. coronavirus

Lawrence Livermore’s aptly named Corona supercomputer has joined the battle to fight the deadly coronavirus.

LLNL has turned to AMD and Penguin Computing to upgrade Corona. The 2018 system, named for the total solar eclipse of 2017, will nearly double in peak performance to 4.5 peak petaflops.

AMD will supply its accelerators to the National Nuclear Security Administration (NNSA) -- but in return, AMD will get an unspecified number of Department of Energy supercomputer compute cycles in the future. ­These compute cycles will be used for a "variety of purposes," including for COVID-19 HPC Consortium-approved research, but also AMD commercial development efforts.

“It is well-known that AMD is a key partner in the upcoming delivery of the first NNSA exascale-class system, the Hewlett Packard Enterprise El Capitan supercomputer,” Michel McCoy, former director of LLNL’s Advanced Simulation and Computing program, said.


sierra

Sierra installed at LLNL is the world’s second fastest supercomputer and will be used in the fight against COVID-19.

Sizing up COVID-19 response

The COVID-19 High Performance Computing Consortium is developing processes for measuring progress and publicizing results on its research projects, which are underway.

The group was convened by the White House Office of Science and Technology Policy to speed the work of coronavirus researchers, which include members from government (including Lawrence Livermore), industry and academia.

One member of the consortium, the Department of Energy’s national laboratories system, boasts the No. 1 and No. 2 fastest supercomputers in the world: Summit and Sierra, the latter of which is housed at Lawrence Livermore.

DOE’s Exascale Computing Initiative, which is independent from the consortium, is using the department’s work with the National Cancer Institute and genomics project, which lend themselves well to COVID-19 research to develop a fast, scalable tool for assemblig genomic data fragments. The tools can be useful in understanding how the microbiomes of the lungs and digestive system can be affected by COVID-19.

american scientist

santer

Ben Santer

A first-person peek at climate

Atmospheric scientist Ben Santer is internationally recognized for his contributions to climate science, including the historic conclusion of the Intergovernmental Panel on Climate Change report in 1995 of the “discernible human influence on global climate.”

His research at Lawrence Livermore National Laboratory focuses on evaluating climate models, using statistical methods in climate science and identifying “fingerprints”both natural and anthropogenicin observed climate records.

He is the recipient of the 2019 Sigma Xi William Procter Prize for Scientific Achievement, which has been annually awarded since 1950, with past recipients including conservation biologist Stuart Pimm, nuclear chemist Darleane C. Hoffman and paleontologist Stephen Jay Gould. American Scientist’s Robert Frederick spoke with Santer about the current state of climate modeling, ongoing challenges and what he finds encouraging. See the full interview.


plant

LLNL researchers and collaborators have used an additive manufacturing technique, called cold-spray deposition, to create thermoelectric generators that can harvest waste heat -- a huge untapped resource -- from previously inaccessible sources.

So hot, you're cool

The U.S. industrial sector churns out 13 quadrillion BTU in waste heat every year and only recaptures about 3 quadrillion of it.

A lot of it could be reclaimed through the science of thermoelectricity, if a new twist on something called supersonic cold-spray technology makes its way out of the lab and into the world.

Cold-spray technology is commonly used in industrial applications, including repair work as well as corrosion resistance and other surface treatments. It involves introducing tiny metal particles into a supersonic gas and slamming them onto a metal surface, where the impact plasters them into a seamless coating.

Cold-spray has been slow to catch on for thermoelectric applications, but that could change thanks to new research from Lawrence Livermore National Laboratory in a partnership with the Virginia-based company TTEC Thermoelectric Technologies.

The team concluded that cold-spray deposition can fabricate bulk pieces of thermoelectric bismuth-telluride on a wide variety of substrates, without loss of structural integrity, demonstrating that cold-spray is a viable alternative to traditional manufacturing approaches for thermoelectric materials.

Computer with email graphic

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The Lab Report is a weekly compendium of media reports on science and technology achievements at Lawrence Livermore National Laboratory. Though the Laboratory reviews items for overall accuracy, the reporting organizations are responsible for the content in the links below.