Redirecting an old chip might change the pathway to tomorrow’s fastest supercomputers, Argonne National Laboratory researchers say.
Articles written by Mike May
Mike May has worked as a full-time freelancer since 1998, covering topics ranging from biotech and drug discovery to information technology and optics. Before that, he worked for seven years as an associate editor at American Scientist. He earned an M.S. in biological engineering from the University of Connecticut and a Ph.D. in neurobiology and behavior from Cornell University.
Exploring the breaking and rejoining of magnetic-field lines requires simulations and computation. A simulation’s accuracy, however, depends on various issues of scale. Magnetic reconnection’s multiscale nature exacerbates the challenge of simulating it. Early research was based entirely on fluid models in just two dimensions, since kinetic simulations were infeasible. Kinetic modeling requires the space and […]
Thousands of tiny systems called atomic nuclei – specific combinations of protons and neutrons – prove extremely difficult to study but have big implications for nuclear stockpile stewardship. To describe all of the nuclei and the reactions between them, a nationwide collaboration is devising powerful algorithms that run on high-performance computers.
Density functional theory (DFT) can be used to determine densities of protons and neutrons making up a nucleus. “If we can determine those densities precisely,” says Witold Nazarewicz, professor of physics at the University of Tennessee, “we can determine the binding energy – the energy stored in the nucleus.” The energy density functional (EDF) in […]