Changes between Version 3 and Version 4 of AstroBearDetails


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Timestamp:
02/03/13 15:22:19 (12 years ago)
Author:
Jonathan
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  • AstroBearDetails

    v3 v4  
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    33== AstroBEAR In Brief ==
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     5AstroBEAR uses Adaptive Mesh Refinement (AMR) of Eulerian grids to model astrophysical flows by solving both hyperbolic and elliptic systems of equations.  AMR allows for modeling systems with a large dynamic range and Eulerian grids allow for updates to the flow variables (mass, momentum, and total energy) to be conserving.  This is extremely important when modeling supersonic flows as it allows for the natural dissipation of bulk kinetic energy into thermal energy that occurs in shocks. 
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    57The growing size of scientific simulations can no longer be accommodated simply by increasing the number of nodes in a cluster.  Completing larger jobs without increasing the wall time requires a decrease in the workload per processor (i.e., increased parallelism).  Unfortunately, increased parallelism often leads to increased communication time.  Minimizing the cost of this communication requires efficient parallel algorithms to manage the distributed AMR structure and calculations.