Lawrence Livermore team looks at nuclear weapon effects for near-surface detonations

June 7, 2021- 
A Lawrence Livermore National Laboratory (LLNL) team has taken a closer look at how nuclear weapon blasts close to the Earth’s surface create complications in their effects and apparent yields. Attempts to correlate data from events with low heights of burst revealed a need to improve the theoretical treatment of strong blast waves rebounding from hard surfaces. This led to an extension of...

The Sierra Era

Nov. 19, 2020- 
This three-dimensional simulation of an idealized inertial confinement fusion implosion shows turbulent mixing in a spherical geometry. Livermore’s Sierra supercomputer makes high-fidelity calculations like this routine, yielding crucial insights into physical phenomena.Lawrence Livermore’s high-performance computing (HPC) facilities house some of the fastest supercomputers in the world, including the flagship Sierra machine. Online for more than a year, Sierra primarily runs simulations for the National Nuclear Security Administration’s (NNSA’s) Advanced Simulation and Computing (ASC) Program. Sierra substantially increases the Laboratory’s ability to...

Lab stands tall on bi-annual list of Top500 supercomputers

Nov. 17, 2020- 
Lawrence Livermore National Laboratory (LLNL) can lay claim to housing four of the world’s 100 most powerful supercomputers, more than any other institution according to the TOP500 List announced Monday during the virtual Supercomputing 2020 conference (SC20). The 125-petaFLOP peak Sierra, the National Nuclear Security Administration’s flagship supercomputer, remained third in the world...

Corona supercomputer gets funding for COVID-19 work

Nov. 16, 2020- 
With funding from the Coronavirus Aid, Relief and Economic Security (CARES) Act, Lawrence Livermore National Laboratory (LLNL), chipmaker AMD and information technology company Supermicro have upgraded the supercomputing cluster Corona, providing additional resources to scientists for COVID-19 drug discovery and vaccine research. The recent addition of nearly 1,000 AMD Radeon Instinct™...

Partnership to develop NNSA's first exascale supercomputer

Aug. 13, 2019- 
The Department of Energy, National Nuclear Security Administration, and Lawrence Livermore National Laboratory announced the signing of contracts with Cray Inc. to build NNSA’s first exascale supercomputer, “El Capitan.” Read the article.