Search Results - "Tobin, Isaac"

On the Number of Face-Connected Components of Morton-Type Space-Filling Curves by Burstedde, Carsten, Holke, Johannes, Isaac, Tobin

“…The Morton- or z -curve is one example for a space-filling curve: Given a level of refinement L ∈ N 0 , it maps the interval [ 0 , 2 dL ) ∩ Z one-to-one to a…”
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Strong scaling for numerical weather prediction at petascale with the atmospheric model NUMA by Müller, Andreas, Kopera, Michal A, Marras, Simone, Wilcox, Lucas C, Isaac, Tobin, Giraldo, Francis X

“…Numerical weather prediction (NWP) has proven to be computationally challenging due to its inherent multiscale nature. Currently, the highest resolution global…”
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An Investigation of Laser Produced Lead-Tin Alloy Plasmas between 10 and 18 nm by Scally, Enda, O’Reilly, Fergal, Hayden, Patrick, Tobin, Isaac, O’Sullivan, Gerry

“…The results of a systematic study performed on Pb-Sn alloys of concentration 65–35% and 94–6% by weight along with spectra from pure Pb and Sn in the…”
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Inversion of geothermal heat flux in a thermomechanically coupled nonlinear Stokes ice sheet model by Zhu, Hongyu, Petra, Noemi, Stadler, Georg, Isaac, Tobin, Hughes, Thomas J. R, Ghattas, Omar

“…We address the inverse problem of inferring the basal geothermal heat flux from surface velocity observations using a steady-state thermomechanically coupled…”
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Scalable and efficient algorithms for the propagation of uncertainty from data through inference to prediction for large-scale problems, with application to flow of the Antarctic ice sheet by Isaac, Tobin, Petra, Noemi, Stadler, Georg, Ghattas, Omar

“…The majority of research on efficient and scalable algorithms in computational science and engineering has focused on the forward problem: given parameter…”
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Direct numerical simulation of incompressible flows on parallel Octree grids by Egan, Raphael, Guittet, Arthur, Temprano-Coleto, Fernando, Isaac, Tobin, Peaudecerf, François J., Landel, Julien R., Luzzatto-Fegiz, Paolo, Burstedde, Carsten, Gibou, Frederic

“…•We present a solver for incompressible flows on distributed Quad-/Oc-tree grids.•We introduce parallel algorithms for expanding ghost layers and for indexing…”
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Localisation of gamma-ray interaction points in thick monolithic CeBr3 and LaBr3:Ce scintillators by Ulyanov, Alexei, Morris, Oran, Roberts, Oliver J., Tobin, Isaac, Hanlon, Lorraine, McBreen, Sheila, Murphy, David, Nelms, Nick, Shortt, Brian

“…Localisation of gamma-ray interaction points in monolithic scintillator crystals can simplify the design and improve the performance of a future Compton…”
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Scalable and efficient algorithms for the propagation of uncertainty from data through inference to prediction for large-scale problems, with application to flow of the Antarctic ice sheet by Isaac, Tobin, Petra, Noemi, Stadler, Georg, Ghattas, Omar

“…The majority of research on efficient and scalable algorithms in computational science and engineering has focused on the forward problem: given parameter…”
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Low-Cost Parallel Algorithms for 2:1 Octree Balance by Isaac, T., Burstedde, C., Ghattas, O.

“…The logical structure of a forest of octrees can be used to create scalable algorithms for parallel adaptive mesh refinement (AMR), which has recently been…”
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Solution of nonlinear Stokes equations discretized by high-order finite elements on nonconforming and anisotropic meshes, with application to ice sheet dynamics by Isaac, Tobin, Stadler, Georg, Ghattas, Omar

“…Motivated by the need for efficient and accurate simulation of the dynamics of the polar ice sheets, we design high-order finite element discretizations and…”
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Scalable and efficient algorithms for the propagation of uncertainty from data through inference to prediction for large-scale problems, with application to flow of the Antarctic ice sheet by Isaac, Tobin, Petra, Noemi, Stadler, Georg, Ghattas, Omar

“…The majority of research on efficient and scalable algorithms in computational science and engineering has focused on the forward problem: given parameter…”
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Recursive Algorithms for Distributed Forests of Octrees by Isaac, Tobin, Burstedde, Carsten, Wilcox, Lucas C, Ghattas, Omar

“…The forest-of-octrees approach to parallel adaptive mesh refinement and coarsening (AMR) has recently been demonstrated in the context of a number of…”
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Multiphysics simulations: Challenges and opportunities by Keyes, David E, McInnes, Lois C, Woodward, Carol, Gropp, William, Myra, Eric, Pernice, Michael, Bell, John, Brown, Jed, Clo, Alain, Connors, Jeffrey, Constantinescu, Emil, Estep, Don, Evans, Kate, Farhat, Charbel, Hakim, Ammar, Hammond, Glenn, Hansen, Glen, Hill, Judith, Isaac, Tobin, Jiao, Xiangmin, Jordan, Kirk, Kaushik, Dinesh, Kaxiras, Efthimios, Koniges, Alice, Lee, Kihwan, Lott, Aaron, Lu, Qiming, Magerlein, John, Maxwell, Reed, McCourt, Michael, Mehl, Miriam, Pawlowski, Roger, Randles, Amanda P, Reynolds, Daniel, Rivière, Beatrice, Rüde, Ulrich, Scheibe, Tim, Shadid, John, Sheehan, Brendan, Shephard, Mark, Siegel, Andrew, Smith, Barry, Tang, Xianzhu, Wilson, Cian, Wohlmuth, Barbara

“…We consider multiphysics applications from algorithmic and architectural perspectives, where “algorithmic” includes both mathematical analysis and…”
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Localisation of gamma-ray interaction points in thick monolithic CeBr 3 and LaBr 3 :Ce scintillators by Ulyanov, Alexei, Morris, Oran, Roberts, Oliver J., Tobin, Isaac, Hanlon, Lorraine, McBreen, Sheila, Murphy, David, Nelms, Nick, Shortt, Brian

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Performance of a monolithic LaBr3:Ce crystal coupled to an array of silicon photomultipliers by Ulyanov, Alexei, Morris, Oran, Hanlon, Lorraine, McBreen, Sheila, Foley, Suzanne, Roberts, Oliver J., Tobin, Isaac, Murphy, David, Wade, Colin, Nelms, Nick, Shortt, Brian, Slavicek, Tomas, Granja, Carlos, Solar, Michael

“…A gamma-ray detector composed of a single 28×28×20mm3 LaBr3:Ce crystal coupled to a custom built 4×4 array of silicon photomultipliers was tested over an…”
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Recursive, parameter-free, explicitly defined interpolation nodes for simplices by Isaac, Tobin

“…A rule for constructing interpolation nodes for $n$th degree polynomials on the simplex is presented. These nodes are simple to define recursively from…”
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Robust Expected Information Gain for Optimal Bayesian Experimental Design Using Ambiguity Sets by Go, Jinwoo, Isaac, Tobin

“…The ranking of experiments by expected information gain (EIG) in Bayesian experimental design is sensitive to changes in the model's prior distribution, and…”
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Inferring ice sheet damage models from limited observations using CRIKit: the Constitutive Relation Inference Toolkit by Bruer, Grant, Isaac, Tobin

“…We examine the prospect of learning ice sheet damage models from observational data. Our approach, implemented in CRIKit (the Constitutive Relation Inference…”
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Inversion of geothermal heat flux in a thermomechanically coupled nonlinear Stokes ice sheet model by Zhu, Hongyu, Petra, Noemi, Stadler, Georg, Isaac, Tobin, Hughes, Thomas J. R, Ghattas, Omar

“…We address the inverse problem of inferring the basal geothermal heat flux from surface velocity observations using an instantaneous thermomechanically…”
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Evaluation of a Minimally Synchronous Algorithm for 2:1 Octree Balance by Suh, Hansol, Isaac, Tobin

“…The p4est library implements octree-based adaptive mesh refinement (AMR) and has demonstrated parallel scalability beyond 100,000 MPI processes in previous…”
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