Michael L. Gittings

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In this work we present a predictive analytical model that encompasses the performance and scaling characteristics of an important ASCI application. SAGE (SAIC's Adaptive Grid Eulerian hydrocode) is a multidimensional hydrodynamics code with adaptive mesh refinement. The model is validated against measurements on several systems including ASCI Blue(More)
We describe RAGE, the " Radiation Adaptive Grid Eulerian " radiation-hydrodynamics code, including its data structures, its parallelization strategy and performance, its hydro-dynamic algorithm(s), its (gray) radiation diffusion algorithm, and some of the considerable amount of verification and validation efforts. The hydrodynamics is a basic Godunov(More)
Kick-em Jenny, in the Eastern Caribbean, is a submerged volcanic cone that has erupted a dozen or more times since its discovery in 1939. The most likely hazard posed by this volcano is to shipping in the immediate vicinity (through volcanic missiles or loss-of-buoyancy), but it is of interest to estimate upper limits on tsunamis that might be produced by a(More)
n a geological time scale, science must consider the impacts of asteroids and comets with Earth a relatively frequent occurrence, causing significant disturbances to biological communities and strongly perturbing evolution's course. 1 Most famous among known catastrophic impacts , of course, is the one that ended the Creta-ceous period and the dominance of(More)
strongly supports academic freedom and a researcher's right to publish; as an institution, however, the Laboratory does not endorse the viewpoint of a publication or guarantee its technical correctness. Abstract In this work we present an analytical model that encompasses the performance and scaling characteristics of an important ASCI application. SAGE(More)
strongly supports academic freedom and a researcher's right to publish; as an institution, however, the Laboratory does not endorse the viewpoint of a publication or guarantee its technical correctness. ABSTRACT In this work we present a predictive analytical model that encompasses the performance and scaling characteristics of an important ASCI(More)
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