ISSN: 1935-0570
Cover image: Flash Center A frame from a 3D simulation of the successive phases of the gravitationally confined detonation explosion mechanism for Type la supernovae.
CONTENTS
ISSUE 4 SUMMER 2007
4
6
INTERVIEW: DR. WARREN WASHINGTON COVER STORY
Advanced Computing for Understanding and Adapting to Climate Change
Dr. Warren Washington, a senior scientist at the National Center for Atmospheric Research, discusses with SciDAC Review the importance of computer models and simulations for understanding, mitigating, and adapting to climate change.
10
PROJECT FOCUS: FLASH CENTER
Computing the Detonation of a White Dwarf Star
Stars that explode in the distinctive blasts called Type Ia supernovae are crucial to illuminating the evolution and fate of the Universe. New simulations have revealed a surprising mechanism that may trigger the explosions.
22
PROJECT FOCUS: APPLIED MATHEMATICS
APDEC: Algorithms and Software for Discovery
APDEC strives to advance scientific discovery through the development of applied mathematics. Researchers depend on APDEC’s simulation tools for solving complex scientific problems.
33
HARDWARE
Science-Based Prediction at LANL
Los Alamos National Laboratory has a rich legacy of scientific computing resources and has recently added the new Roadrunner system to an already impressive lineup of high-performance hardware.
36
PROJECT FOCUS: LATTICE QCD
Probing Matter at Subnuclear Scales
Scientists funded under the SciDAC National Computational Infrastructure for Lattice Gauge Theory are using high-end computing to understand the nature of matter and the Universe.
48
ENERGY SCIENCES NETWORK
ESnet: Advanced Networking for Science
Researchers around the world using advanced computing for scientific discovery are connected via the DOE-operated Energy Sciences Network (ESnet). By providing a reliable, high-performance communications infrastructure, ESnet facilitates the large-scale, collaborative science endeavors fundamental to Office of Science missions.
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CLOSING NOTES
Preview and Acronyms
A preview of the BioPilot project, to be featured in an upcoming issue. Also, a legend is provided to help readers navigate through the many acronyms commonly encountered in SciDAC Review.