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On the Preconditioning of a High-Order RDG-based All-Speed Navier-Stokes Solver
04 Feb 2016 | Online Presentations | Contributor(s): Brian Weston
We investigate the preconditioning of an all-speed Navier-Stokes solver, based on the orthogonal-basis Reconstructed Discontinuous Galerkin (RDG) space discretization, and integrated using a...
Parallel Multigrid Preconditioner Based on Automatic 3D Tetradedric Meshes
04 Feb 2016 | Online Presentations | Contributor(s): Frederic Vi
Multigrid methods are efficient for solving large sparse linear systems. Geometric (GMG) and Algebraic Multigrid (AMG) have both their own benefits and limitations. Combining the simplicity of AMG...
Peter Wang - Introduction of Biotechnology and Cellular Engineering
15 May 2013 | Online Presentations | Contributor(s): Mohamud Yusuf Mohamed
Peter Wang, UIUC
Preconditioning for Divergence-Conforming Discretizations of the Stokes Equations
07 Feb 2016 | Online Presentations | Contributor(s): Thomas Benson
Recent years have seen renewed interest in the numerical solution of the Stokes Equations. Of particular interest is the use of inf-sup stable pairs of finite elements for which weak enforcement...
Properties of Nanosilicon as a Platform for Functional Devices
21 May 2012 | Online Presentations | Contributor(s): Mohamud Yusuf Mohamed
Nobuyoshi Koshida, Tokyo University of Agriculture and Technology
Range Decomposition: A Low Communication Algorithm for Solving PDEs on Massively Parallel Machines
07 Feb 2016 | Online Presentations | Contributor(s): Tom Manteuffel
The Range Decomposition (RD) algorithm uses nested iteration and adaptive mesh refinement locally before performing a global communication step. Only several such steps are observed to be...
Reducing Communication Costs for Sparse Matrix Multiplication within Algebraic Multigrid
04 Feb 2016 | Online Presentations | Contributor(s): Grey Ballard
We consider the sequence of sparse matrix-matrix multiplications performed during the setup phase of algebraic multigrid. In particular, we show that the most commonly used parallel algorithm is...
Seventeenth Copper Mountain Conference on Multigrid Methods
04 Feb 2016 | Workshops
Optimization and Inverse Problems
Data Mining, Large Graphs, and Markov Chains
Nonsymmetric and Indefinite Problems
Space-time constrained FOSLS with AMGe upscaling
04 Feb 2016 | Online Presentations | Contributor(s): Panayot Vassilevski
We consider time-dependent PDEs discretized in combined space-time domains. We first reduce the PDE to a first order system. Very often in practice, one of the equations of the reduced system...
Stable Discretizations and Robust Block Preconditioners for Fluid-Structure Interaction Systems
04 Feb 2016 | Online Presentations | Contributor(s): Kai Yang
In our work we develop a family of preconditioners for the linear algebraic systems arising from the arbitrary Lagrangian-Eulerian discretization of some fluid-structure interaction models. After...
Support Graph Smoothing Techniques
04 Feb 2016 | Online Presentations | Contributor(s): Alyson Fox
Many tasks in large-scale network analysis and simulation require efficient approximation of the solution to the linear system $ Lx=b$, where $ L$ is a graph Laplacian. However, due to the large...
Task-Graph and Functional Programming Models: The New Paradigm
04 Feb 2016 | Online Presentations | Contributor(s): Ben Bergen
The Message Passing Interface (MPI) is an example of a distributed-memory communication model that has served us well through the CISC processor era. However, because of MPI's low-level...
Understanding the Propagation of Silent Data Corruption in Algebraic Multigrid
04 Feb 2016 | Online Presentations | Contributor(s): Jon Calhoun
Sparse linear solvers from a fundamental kernel in high performance computing (HPC). Exascale systems are expected to be more complex than systems of today being composed of thousands of...
[Illinois] 2010 Nano-Biophotonics Summer School: Intro to Nanophotonics
14 Jun 2013 | Online Presentations | Contributor(s): Kent D Choquette
Biophotonics Summer School 2010
May 21st - June 1st 2010 Urbana-Champaign, Illinois
The Biophotonics Summer School brings together from a wide variety of disciplines to teach students about the...
[Illinois] Advances in Nanoindentation Techniques for Wood Cell Walls
18 Sep 2015 | Online Presentations | Contributor(s): Joseph Jakes
Dr. Jakes recieved his B.S. in Chemical and Biological Engineering in 2005, his M.S. in Materials Science in 2007, and his Ph.D. in Materials Science in 2010 all from the University of Wisconsin,...
[Illinois] AFM indentation tests reveal the poroelastic nature of the cytoplasm
19 Nov 2015 | Online Presentations | Contributor(s): Emad Moeendarbary
[Illinois] B3SI 2012: Closing Session
17 Dec 2013 | Online Presentations | Contributor(s): Rashid Bashir, Lizzanne DeStefano, Hsiang-Yu Angie Wang, Hao-Ming Hsiao, Jimmy K. Hsia, Laura Arriola Miller
Deeper understandings of biological systems and advances in nanotechnology have provided new opportunities to make significant progress in mechanobiology, biosensing and dynamic control of...
[Illinois] B3SI 2012: International Collaboration Panel
17 May 2013 | Online Presentations | Contributor(s): Hao-Ming Hsiao, Irfan S. Ahmad, Nai-Jen Harry Chang, Taher A. Saif, Xin Tang, Hsiang-Yu Angie Wang
[Illinois] Beckman Director's Seminar - Quantitative Phase Imaging
26 Nov 2012 | Online Presentations | Contributor(s): Gabriel Popescu
"Ever since the invention of the microscope in the 17th century, it has been observed that live cells are transparent under visible illumination, i.e. they do not absorb (or scatter) light...
[Illinois] Beckman Graduate Seminar: Dispersion-relation Spectroscopy of Intracellular Transport
18 Dec 2012 | Online Presentations | Contributor(s): Ru Wang
The interior of a living cell is a busy place. Molecular motors move materials along prescribed biopolymer tracks. This sort of active transport is required to rapidly move products over large...