Today at Berkeley Lab

World Water Day: The Effects of Climate Change on California Watersheds

California relies on the Sierra Nevada snowpack for a significant portion of its water needs, yet scientists understand very little about how changes in snowpack volume and timing will influence surface water and groundwater. Erica Woodburn is working on an advanced hydrologic model to study how climate change might affect California watersheds in the future. More>

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A Game Changer: Metagenomic Clustering Powered by Supercomputers

Berkeley Lab CRD and JGI researchers took one of the most popular clustering approaches in modern biology – the Markov Clustering algorithm – and modified it to run efficiently and at scale on distributed memory supercomputers. In a test, their algorithm achieved a previously impossible clustering of a 70-million-node, 68-billion-edge biological network in hours. More>

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Women’s History Month: NERSC Computers Named After Pioneering Women

Two of NERSC’s supercomputers, Hopper and Cori, were named after pioneering and inspiring women in science. Grace Hopper, a Navy rear admiral, was at the forefront of computer programming. Biochemist Gerty Cori was the first American woman to win a Nobel Prize. Two other systems, no longer in service, were also named for women: Marie Curie and Laura Bassi.

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Using NERSC to Resolve One of Cosmology’s Biggest Controversies

Astrophysicists at Berkeley Lab and the University of Portsmouth in the U.K. believe that strongly lensed Type Ia supernovae could resolve one of cosmology’s biggest controversies, which relates to the rate of the universe’s expansion. More>

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Physics Data Processed at NERSC Dramatically Cuts Reconstruction Time

In a recent demonstration project, physicists from Brookhaven National Laboratory and Berkeley Lab used the Cori supercomputer at the National Energy Research Scientific Computing Center to reconstruct data collected from a nuclear physics experiment, an advance that could dramatically reduce the time it takes to make detailed data available for scientific discoveries. More>

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El Cerrito High School Students Get Hands-On Experience During Visit

Students from the IT Academy at El Cerrito High School recently took part in a special Big Data Study Trip hosted at the Lab and sponsored by Workforce Development and Education, EESA, NERSC, and CRD. They plotted characteristics and mapped patterns using water-quality data, and brainstormed on ways to collect and analyze data from San Pablo Bay. More>

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Researchers Discuss Challenges of Storing and Retrieving Exascale Data

Future exascale supercomputers will be able to process a quintillion calculations per second. How can users store and retrieve data quickly enough on such a system? In this podcast, CRD’s Suren Byna and NERSC’s Quincey Koziol discuss prepping HDF5 – one of the most parallel I/O libraries for high-end supercomputing systems – for exascale use.

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Lab Researchers Aid Speedier Scientific Data Flows

Eli Dart (ESnet), Michael Wehner (CRD), and Prabhat (NERSC) recently teamed up to document the data transfer workflow, data transfer performance, and other aspects of moving approximately 56 terabytes of climate data from the distributed Coupled Model Intercomparison Project (CMIP5) archive to NERSC. More>

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Coupling Experiments to Theory to Build a Better Battery

A Berkeley Lab-led team of researchers has reported that a new lithium-sulfur battery component allows a doubling in capacity compared to a conventional lithium-sulfur battery, even after more than 100 charge cycles. More>

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The Blob that Ate the Tokamak

To fuse hydrogen atoms into helium, devices called tokamaks must maintain the heat of the ultrahot plasma they control. But “boiling” plasma develops blobs that reduce the performance of the plasma. Analysis conducted at NERSC by researchers from Princeton Plasma Physics Lab has provided insight into how blobs at the plasma edge behave. More>

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