Global Galactic Disk Simulations Using High-Performance GPM

Details Global Galactic Disk Simulations Using High-Performance GPM Global Galactic Disk Simulations Using High-Performance GPM

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..dppqp1016h&link_type=abstract

American Physical Society, 44th Annual Meeting of the Division of Plasma , abstract #QP1.016

Computer Science

Performance

Scientific paper

Gradient Particle Magnetohydrodynamics (GPM) is a new Lagrangian method for astrophysical magnetohydrodynamics based on gradients corrected for the locally disordered particle distribution. A high-performance implementation of this numerical method is described; features include variable smoothing length, independent timesteps for particles, Lagrangian timestep constraints, parallelization, and evolution of vector potential to prevent magnetic divergence. Specific issues for large-scale simulation are discussed including diffusion/smoothing and boundary conditions. Performance characterstics of the code are shown. Finally, preliminary global simulations of the Galactic disk are presented.

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