FLASH is a modular, adaptive mesh, parallel simulation framework capable of handling the compressible, reactive flows found in many astrophysical environments. FLASH was recently used in a series of three-dimensional simulations of the gravitationally confined detonation mechanism for Type la supernovae on IBM SP-5 platforms at LLNL and NERSC on up to 768 processors. The simulations used multiple physics components, such as hydrodynamics, Newtonian self-gravity, and a sub-grid flame model on an Eulerian adaptive grid. The simulations also used Lagrangian tracer particles to track the nucleosynthetic history. These simulations were a huge challenge not only because of the computational complexity of the problem, but also because of resource constraints. Some components, such as the gravity solver and flame model, had to be algorithmically optimized to increase time efficiency. Other components, such as the tracer particles distribution, grid management, and refinement patterns, were carefully tuned to optimize the memory usage and parallel efficiency.
- Challenges of extreme computing using the FLASH code
- A. Dubey - University of ChicagoR. Fisher - University of ChicagoC. Graziani - University of ChicagoG. C. Jordan - University of ChicagoD. Q. Lamb - University of ChicagoL. B. Reid - University of ChicagoP. Rich - University of ChicagoD. Sheeler - Argonne Natl Lab, Argonne, IL USAD. Townsley - University of ChicagoK. Weide - University of Chicago
- N V Pogorelov (Editor)E Audit (Editor)G P Zank (Editor)
- Numerical modeling of space plasma flows : ASTRONUM-2007 : proceedings of the 2nd International Conference held at Hotel Concorde Montparnasse, Paris, France, 10-15 June 2007, Vol.385, p.145
- Astronomical Society of the Pacific Conference Series
- Astronomical Soc Pacific
- 2
- English
- B523820 / U.S. Department of Energy; United States Department of Energy (DOE)
- Department of Physics
- Conference proceeding
- 9781583813331; 1583813330
- 9914417702801301