COMPUTERS IN PHYSICS
Heterogeneous Computing Environment
Tohline, Cazes & Cohl
The Astrophysical Problem
Computational Fluid Dynamic Simulations
- Introduce into the DNS algorithm a logical loop including
a print statement which instructs the computer to
periodically write to disk a 3D data array
containing a description of
the gas density at every location on the spatial lattice.
- At the end of an evolutionary sequence, read the 3D data
arrays into another computer (usually a graphical workstation)
one at a time, and use a volume-rendering algorithm to
generate a 2D image of one isodensity surface for each data array.
- View an animation of the evolution by instructing the
workstation to rapidly ''flip through'' the sequence of 2D images.
Although effective, this plan which relegates the data analysis
(visualization) to a post-processing task
is generally inefficient and puts large demands on data