| Abstract Scope |
Tasmanian is a library for Uncertainty Quantification developed at Oak Ridge National Laboratory, specializing in sparse grid surrogate modeling, Bayesian inference, and optimization. This library has been applied to a variety of fields, including creating surrogates for melt-pool shape geometry, studying plasma-material interactions and magneto-hydrodynamics (MHD) in plasma physics, as well as analyzing fracture mechanics in solids. Tasmanian provides a diverse array of tools that cater to problems with varying levels of smoothness in model outputs concerning model inputs, ranging from very smooth to discontinuous, and accommodating different computational demands, from a few minutes to several days on cluster computers. In addition, Tasmanian works on all current exascale supercomputers, utilizing extreme concurrency and GPU acceleration. We present a cross study of different surrogate techniques for MHD models using very limited number of samples, where Tasmanian sparse grids approach shows excellent accuracy in capturing the full model dynamics. |