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Bug repellent for supercomputers proves effective

November 14, 2012 9:07 am | News | Comments

Lawrence Livermore National Laboratory (LLNL) researchers have used the Stack Trace Analysis Tool (STAT), a highly scalable, lightweight tool to debug a program running more than one million MPI processes on the IBM Blue Gene/Q-based Sequoia supercomputer. The debugging tool is a significant milestone in LLNL's multi-year collaboration with the University of Wisconsin-Madison and the University of New Mexico to ensure supercomputers run more efficiently.

Preparing Sequoia for national security missions

November 12, 2012 8:25 am | News | Comments

Sequoia, a world-class IBM BlueGene/Q computer sited at Lawrence Livermore National Laboratory for the National Nuclear Security Administration (NNSA), is exploring a broad range of science to shakeout the machine and fully develop the capabilities the system will require to fulfill its national security missions, starting early next year.

Americans use more efficient and renewable energy technologies

October 24, 2012 9:27 am | News | Comments

Americans used less energy in 2011 than in the previous year due mainly to a shift to higher-efficiency energy technologies in the transportation and residential sectors. Meanwhile, less coal was used but more natural gas was consumed according to the most recent energy flow charts released by Lawrence Livermore National Laboratory.

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Milky Way's black hole getting ready for snack

October 22, 2012 10:50 am | News | Comments

Get ready for a fascinating eating experience in the center of our galaxy. The event involves a black hole that may devour much of an approaching cloud of dust and gas known as G2. A supercomputer simulation prepared by two Lawrence Livermore National Laboratory physicists suggests that some of G2 will survive, although its surviving mass will be torn apart, leaving it with a different shape and questionable fate.

New military apparel repels chemical, biological agents

October 17, 2012 8:17 am | News | Comments

Lawrence Livermore National Laboratory scientists and collaborators are developing a new military uniform material that repels chemical and biological agents using a novel carbon nanotube fabric. The material will be designed to undergo a rapid transition from a breathable state to a protective state.

Cold cases heat up through Livermore approach to identifying remains

October 10, 2012 8:57 am | News | Comments

In an effort to identify the thousands of John/Jane Doe cold cases in the United States, a Lawrence Livermore National Laboratory researcher and a team of international collaborators have found a multidisciplinary approach to identifying the remains of missing persons. Using "bomb pulse" radiocarbon analysis developed at Livermore Lab, combined with recently developed anthropological analysis and forensic DNA techniques, the researchers were able to identify the remains of a missing child 41 years after the discovery of the body.

Changing the dynamics of bulk materials

October 9, 2012 8:16 am | News | Comments

Lawrence Livermore National Laboratory researchers have developed a new bulk material whose physical properties can be dynamically changed by an external signal. The scientists came up with a method to fabricate mass-producible, graphene-based bulk materials from low-cost, polymer-derived carbon foams by selectively removing carbon atoms form a network composed of both unstructured carbon and graphite nanoplatelets.

Paper explores new regimes in fast ignition

October 5, 2012 2:36 pm | News | Comments

Nearly 20 year ago, a group of researchers at Lawrence Livermore National Laboratory proposed a hole boring process that would serve as the original scheme for fast ignition. Today, researchers are pushing this research ahead into new regimes.

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100th shot for LLNL's 'gun in the desert'

September 27, 2012 3:50 am | News | Comments

Lawrence Livermore National Laboratory's JASPER gas gun has fired its 100th shot. JASPER (the Joint Actinide Shock Physics Experimental Research) is a key scientific tool for the National Nuclear Security Administrations Stockpile Stewardship Program and its experiments have enabled scientists to understand important properties and behaviors of plutonium and other special nuclear materials without conducting underground nuclear tests.

The boy who played with fusion

September 13, 2012 7:40 am | by Delaynie A Koenig | News | Comments

After four years of work in his parent’s garage, 14-year-old Taylor Wilson built his first successful fusion reactor. Now 18 and old enough to be actually be a student at the university where he shares a laboratory, Wilson is chasing research projects of many kinds and is still fascinated by the science of the atom.

Powerful new formulation could replace today’s best military explosive

September 6, 2012 4:41 am | News | Comments

Borrowing a technology used to improve the effectiveness of drugs, scientists at the University of Michigan and Lawrence Livermore National Laboratory are reporting discovery of a new explosive more powerful than the current state-of-the-art explosive used by the military, and just as safe for personnel to handle.

Forcing the molecular bond issue

September 6, 2012 3:49 am | News | Comments

Researchers at Lawrence Berkeley National Laboratory's Molecular Foundry developed a first-of-its-kind model for providing a comprehensive description of the way in which molecular bonds form and rupture. This model enables researchers to predict the "binding free energy" of a given molecular system, a key to predicting how that molecule will interact with other molecules.

New insight into independent control of ionic, electronic conductivity of materials

August 14, 2012 4:19 am | News | Comments

Lawrence Livermore National Laboratory researchers have discovered a new method to independently control ionic and electronic conductivities in certain solids. The method, which uses tailored acceptor-donor co-doping to bind charged native vacancies and selectively modulate ionic but not electronic conductivity, was developed by using first-principles materials simulations.

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Research provides new insights into actinide electronic structure

August 10, 2012 5:20 am | News | Comments

A team of researchers studying the fundamental properties of the actinide elements has significantly advanced the understanding of the electronic structure of elements that have electrons occupying f-orbitals.

Researchers develop new desalination technique

August 6, 2012 5:03 am | News | Comments

Lawrence Livermore National Laboratory researchers have developed a new capacitive desalination technique that could ultimately lower the cost and time of desalinating seawater. The technique, called flow-through electrode capacitive desalination, uses porous carbon materials with a hierarchical pore structure, which allows the saltwater to easily flow through the electrodes themselves.

NIF makes history with record 500 terawatt shot

July 13, 2012 4:40 am | News | Comments

Fifteen years of work by the Lawrence Livermore National Laboratory's National Ignition Facility (NIF) team paid off on July 5 with a historic record-breaking laser shot. The NIF laser system of 192 beams delivered more than 500 TW of peak power and 1.85 MJ of ultraviolet laser light to its target.

Researchers image individual airborne particulates at the nanoscale

June 27, 2012 11:23 am | News | Comments

With the help of intense coherent X-ray pulses from the Linac Coherent Light Source free-electron laser, Lawrence Livermore National Laboratory researchers and international collaborators have, for the first time, peered into the makeup of complex airborne particulate matter so small that it can be transported into human lungs—usually without a trace.

IBM, Livermore form Deep Computing Solution collaboration

June 27, 2012 8:32 am | News | Comments

Researchers at IBM and Lawrence Livermore National Laboratory announced that they are broadening their nearly 20-year collaboration in high-performance computing by joining forces to work with industrial partners to help boost their competitiveness in the global economy.

Sifting through a trillion electrons

June 26, 2012 11:36 am | by Linda Vu | News | Comments

Modern research tools like supercomputers, particle colliders, and telescopes are generating so much data, so quickly, many scientists fear that soon they will not be able to keep up with the deluge. A team of computer researchers from universities and national laboratories are fighting to keep up, and have recently developed a tool that is able to query a massive 32 TB dataset in just 3 secs.

New accelerator to examine heavy-ion beam approach to inertial fusion power

June 25, 2012 3:29 am | News | Comments

The U.S. Department of Energy's Heavy Ion Fusion Science Virtual National Laboratory has recently completed a new accelerator designed to study an alternate approach to inertial fusion energy. Housed at Lawrence Berkeley National Laboratory, NDCX-II is a compact machine designed to produce a high-quality, dense beam that can rapidly deliver a powerful punch to a solid target.

NNSA's Sequoia supercomputer ranked as world's fastest

June 18, 2012 9:41 am | News | Comments

The National Nuclear Security Administration (NNSA) announced that a supercomputer called Sequoia at Lawrence Livermore National Laboratory was ranked the world's most powerful computing system. Clocking in at 16.32 sustained petaflops, Sequoia earned the No. 1 ranking on the industry standard Top500 list of the world's fastest supercomputers.

NuSTAR to hunt for extreme objects in space

June 13, 2012 10:29 am | by Anne M. Stark | News | Comments

Scheduled for launch this week from Kwajalein Atoll in the Marshall Islands, the Nuclear Spectroscopic Telescope Array (or NuSTAR), is the first focusing, high energy X-ray satellite to be launched from NASA. Hundreds of times more sensitive than any previous hard X-ray instrument, it will allow researchers to take a census of black holes.

Study: Humans are primary cause of global ocean warming

June 11, 2012 3:59 am | News | Comments

New research by a team of Lawrence Livermore National Laboratory scientists and international collaborators shows that the observed ocean warming over the last 50 years is consistent with climate models only if the models include the impacts of observed increases in greenhouse gas during the 20th century.

Research identifies precise measurement of radiation damage

June 5, 2012 6:42 am | News | Comments

Lawrence Livermore National Laboratory researchers have for the first time identified a precise measurement of the amount of radiation damage that will occur in any given material. With a full understanding of the early stages of the radiation damage process, researchers are provided with better knowledge and tools to manipulate materials to our advantage.

Nuclear weapon simulations show performance in molecular detail

June 5, 2012 6:26 am | News | Comments

U.S. researchers are perfecting simulations that show a nuclear weapon's performance in precise molecular detail. Because international treaties forbid the detonation of nuclear test weapons, tools that can accurately depict an explosion are becoming critical for national defense.

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