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Tag: NERSC

Jeff Broughton Looks Back, and Prepares for the Next Thing

Jeff Broughton stands by the Edison supercomputer that he helped bring to NERSC, one of his proudest accomplishments during a long career.

Simulations at NERSC Drive Progress Toward Nuclear Fusion

The NSTX-U is a nearly spherical, toroidal tokamak, meaning its outer shell is nearly perfectly round, and the inside is shaped like a donut.

Machine Learning Fuels Materials Science and Search in Continuous Action Spaces

Two representations show the algorithm's effectiveness at predicting force fields for 54 elements across the periodic table.

Researchers Narrow Down Mass of Sought-After Axion Particle

In their search for the axion particle, scientists focus their simulations on axion strings, topological defects in the soup of the early universe. Here, an axion string is rendered as a dark blue loop emitting axions. (Credit: Malte Buschmann, Princeton University)

New Encoder-Decoder Overcomes Limitations in Scientific Machine Learning

Figure: A general depiction of the encoder-decoder framework with an integrated CRF-RNN layer. The input data is fed into a chosen encoder, which then is upsampled by the U-Net-based decoder. Both the decoder output and the initial image serve as inputs for the CRF-RNN layer, which produces the final pixel-based prediction. (Credit: M. Avaylon, T. Perciano, Z. Bai)

San Francisco and Berkeley Lab Team Up on Pioneering Climate Study

Running simulations at NERSC, the research collaboration found that the effect of climate change on future storms in the San Francisco Bay Area will be significant, leading to more powerful storms unleashing substantially more water. (Credit: Brocken Inaglory via Wikimedia Commons)

Hydrogen Fuel Cells: An Environmentally Friendly Alternative

Hydrogen Fuel Cell Electric Vehicles: How they Work Hydrogen fuel cell electric vehicles (FCEVs) are similar to electric vehicles in that they use an electric motor instead of an internal combustion engine to power the wheels. However, while electric vehicles run on batteries that must be plugged in to recharge, FCEVs generate their electricity onboard. In a fuel cell, hydrogen gas from the vehicle’s fuel tank combines with oxygen from the air to generate electricity with only water and heat as byproducts of the process. Fueling a hydrogen FCEV is similar to refilling a vehicle’s gas tank, but using a nozzle from a designated hydrogen dispenser at a public station. Refueling times are also similar: FCEVs can be refueled in as little as 5 minutes. Some FCEVs can go more than 300 miles on one tank of hydrogen fuel — greater than the distance from St. Louis to Chicago — and fuel economy close to 70 MPGe (miles per gasoline gallon equivalent). For more details about hydrogen FCEVs and how they work, visit this U.S. Environmental Protection Agency information site.

Berkeley Lab Computing Resources Enable Deeper Understanding of Supernovae Explosions

A dead star explodes as a Type Ia supernova. (Image credit: NASA)

X-Ray Crystallography Goes Even Tinier

A new method for x-ray crystallography expands the technique to identify the structures of molecules that don't easily form large, symmetrical nanocrystals.

Climate Simulations Redefine Causes of North American Monsoon

The North American Monsoon pattern can cause heavy rainfall in Mexico and the American Southwest in the late summer. New research using a more granular model shows that this monsoon is mechanically, rather than thermally, forced.

Hopper Fellow Brings ML, Math, and Algorithmic Expertise to NERSC

Richard Barnes

NERSC Resources Help Achieve Milestone in Neutrino Research

Experimental hall of the KATRIN experiment showing the main spectrometer from the front. The outside rings are air-coil magnets used to compensate for the earth's magnetic field. (Credit: KIT/Markus Breig)
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