A suite of "real-world" (2D and 3D) SAMR application
kernels have been used for the the purpose of characterizing partitioners
for different applications and application states. The application kernels
are taken from varied scientific and engineering domains and demonstrate
very different run-time behavior and adaptation patterns. Application domains
include numerical relativity (scalarwave 2D and 3D), oil reservoir simulations
(buckley-leverette 2D and 3D), and computational fluid dynamics (compressible
turbulence - rm2D and 3D, and supersonic flows - enoamr2D). Generally, the applications use
3 levels of factor 2 space-time refinements. Refinements are performed every 4 time-steps
in each case. The applications
are listed in the following table.
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Numerical relativity application (aka
NumRel 2D/ NumRel 3D) is a coupled set of partial differential equations.
Equations can be divided into two classes: elliptic (Laplace equation-like)
constraint equations which must be satisfied at each time, and coupled
hyperbolic (Wave equation-like) equations describing time evolution. This kernel
is part of the Cactus numerical relativity toolkit.
http://www.cactuscode.org |
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Buckley-Leverette model is used in
Oil-Water Flow Simulation (OWFS) software system for simulation of hydrocarbon
pollution in aquifers. OWFS provides for layer-by-layer modeling of oil-water
mixture in confined aquifers with regard to discharge/recharge, infiltration,
interaction with surface water bodies and drainage systems, discharge into
springs and leakage between layers. This kernel is taken from the IPARS
reservoir simulation toolkit developed at the Center for Subsurface Modeling
at University of Texas at Austin.
http://www.ticam.utexas.edu/CSM/ACTI/ipars.html |
| RM 2D/ RM3D | 2/3-dimensional compressible turbulence
application solving the Richtmyer-Meshkov instability. This application kernel
is part of the virtual test facility developed at the ASCI/ASAP Center at
California Institute of Technology. The Richtmyer-Meshkov instability is a
fingering instability which occurs at a material interface accelerated by a
shock wave. This instability plays an important role in the studies of
supernova and inertial confinement fusion.
http://www.cacr.caltech.edu/ASAP |
| EnoAMR 2D | 2-dimensional application in computational
fluid dynamics that addresses the forward facing step problem, describing what
happens when a step is instantaneously risen in a supersonic flow. The
application/simulation has several features including bow shock, Mach stem,
contact discontinuity, and a numerical boundary. EnoAMR 2D is also part of the
virtual test facility developed at the ASCI/ASAP Center at Caltech.
http://www.cacr.caltech.edu/ASAP |