July 31, 2009 | 13 comments

Supercomputer unravels core-collapse supernovae

 
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Supercomputer unravels core-collapse supernovae

CLICK TO ENLARGE + Argonne National Laboratory via Flickr (Creative Commons license); Image courtesy Hongfeng Yu

Kids, don't try this on your home computer. The U.S. Department of Energy's Argonne National Laboratory developed this model of an exploding star's core to help elucidate what happens inside core-collapse supernovae. The model was made using the lab's IBM Blue Gene/P machine, currently ranked seventh on a list of the world's most powerful supercomputers. Argonne's Blue Gene/P boasts more than 160,000 processors, as many as would be found in Giants Stadium were it filled to capacity with people toting dual-core laptops.

"In astrophysics, studying how stars burn and explode pulls together all kinds of physics: hydrodynamics, gravitational physics, nuclear chemistry and energy transport," Mark Hereld of the Argonne Leadership Computing Facility said in a press release. To take on such a massive task, Argonne's computing team developed a method for creating graphic visualizations of data on Blue Gene/P without bouncing the data to graphics processors, which can be cumbersome.

Studying complex problems such as the mechanics of a supernova "often lead[s] to questions that are very complicated to pose mathematically," Hereld said. "But when you can simply watch a star explode through visualization of the simulation, you can gain insight that's not available any other way."

 
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