Top NSF petascale supercomputer and expert staff accelerate discoveries for nation's scientists

Published on May 27, 2014 by Aaron Dubrow

Volume rendering of the entropy in a full 3D GRMHD simulation of a differentially rotating and highly magnetized progenitor to a supernovae. Credit: Philipp Moesta, TAPIR, Caltech

Everything is Better in 3D

On Stampede, Philipp Moesta and Christian D. Ott from Caltech succeeded in performing the first fully general-relativistic 3D magnetohydrodynamics simulations of progenitor stars that are believed to lead to energetic, jet-driven supernova explosions. Their findings show that the simulations behave very differently in full, unconstrained 3D compared to the same model simulated with symmetries imposed.

A typical simulation used six to eight million processing hours to simulate the collapse of the progenitor star and approximately 200 milliseconds of post-bounce evolution. They typically run their simulations on roughly 4,000 cores for about two months.

"Stampede's performance really helped push our simulations to the limit," said Ott. "Our research would have been practically impossible without Stampede."

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