High Performance Reactive Fluid Flow Simulations Using Adaptive Mesh Refinement on Thousands of Processors

We present simulations and performance results of nuclear burning fronts in supernovae on the largest domain and at the finest spatial resolution studied to date. These simulations were performed on the Intel ASCI-Red machine at Sandia National Laboratories using FLASH, a code developed at the Center for Astrophysical Thermonuclear Flashes at the University of Chicago. FLASH is a modular, adaptive mesh, parallel simulation code capable of handling compressible, reactive fluid flows in astrophysical environments. FLASH is written primarily in Fortran 90, uses the Message-Passing Interface library for inter-processor communication and portability, and employs the PARAMESH package to manage a block-structured adaptive mesh that places blocks only where resolution is required and tracks rapidly changing flow features, such as detonation fronts, with ease. We describe the key algorithms and their implementation as well as the optimizations required to achieve sustained performance of 238 G...

• Type: Conference
• Year: 2000
• Where: SC
• Authors: A. C. Calder, Bruce C. Curtis, L. J. Dursi, Bruce Fryxell, Greg Henry, Peter MacNeice, Kevin Olson, P. Ricker, R. Rosner, F. X. Timmes, Henry M. Tufo, J. W. Turan, Michael Zingale
• Keywords: Adaptive Mesh, Applied Computing, Astrophysical Thermonuclear Flashes, Nuclear Burning Fronts, SC 2000