PROGRAM
Days: Thursday, March 31st Friday, April 1st Monday, April 4th Tuesday, April 5th Wednesday, April 6th Thursday, April 7th Friday, April 8th
Thursday, March 31st
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10:00-13:00 Session 1: Tutorial #1: Iterative methods for sparse linear systems: Theory and practice
Chair:
Friday, April 1st
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Monday, April 4th
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09:00-11:05 Session 3A: Krylov Methods
Chair:
09:00 | GPMR: An Iterative Method for Unsymmetric Partitioned Linear Systems (abstract) PRESENTER: Alexis Montoison |
09:25 | Convergence of GMRES with respect to the right-hand-side vector (abstract) PRESENTER: Shikhar Shah |
09:50 | Linear Asymptotic Convergence Analysis of Anderson Acceleration, with Krylov Formulation in the Linear Case (abstract) PRESENTER: Hans De Sterck |
10:15 | GCR equivalent multiple right-hand side GMRES (abstract) PRESENTER: Bulat Valiakhmetov |
10:40 | Post-Modern PM-GMRES (abstract) PRESENTER: Stephen Thomas |
09:00-11:05 Session 3B: Scalable Solvers for Coupled Multiphysics 1
Chair:
09:00 | An adaptive scalable fully implicit algorithm based on stabilized finite element for reduced visco-resistive MHD (abstract) PRESENTER: Qi Tang |
09:25 | Augmented Lagrangian preconditioners for incompressible resistive magnetohydrodynamics (abstract) PRESENTER: Patrick Farrell |
09:50 | Block Preconditioning and a Monolithic AMG Method for Magnetic Confinement Fusion Relevant Resistive MHD Simulations (abstract) PRESENTER: Peter Ohm |
10:15 | Beyond radiation-hydrodynamics: Coupling kinetic plasma and radiation transport (abstract) PRESENTER: Hans Hammer |
10:40 | Monolithic Multigrid Methods for Higher-Order Discretizations of Time-Dependent Maxwell’s Equations (abstract) PRESENTER: Razan Abu-Labdeh |
09:00-11:05 Session 3C: Topics in Optimization, Inversion
Chair:
09:00 | From challenges to edge-preserving methods for large-scale dynamic inverse problems (abstract) PRESENTER: Mirjeta Pasha |
09:25 | An ℓp Variable Projection Method for Large-Scale Separable Nonlinear Inverse Problems (abstract) PRESENTER: Malena Espanol |
09:50 | Bayesian Level Set Approach for Inverse Problems with Piecewise Constant Reconstructions (abstract) PRESENTER: William Reese |
10:15 | Hybrid Projection Methods for Solution Decomposition in Large-scale Bayesian Inverse Problems (abstract) PRESENTER: Jiahua Jiang |
10:40 | Minimisation of || b-Ax||_max ||b- Ax||_1 with Krylov-Simplex and column generation (abstract) PRESENTER: Wim Vanroose |
11:05-11:25Coffee Break
11:25-13:30 Session 4A: Asynchronous Methods
Chair:
11:25 | On Iterative Sparse Triangular Solves (abstract) |
11:50 | Asynchronous Jacobi Methods with Resilience to Data Corruption and Robustness to Data Delay (abstract) PRESENTER: Christopher Vogl |
12:15 | Asynchronous Chebyshev Methods (abstract) PRESENTER: Jordi Wolfson Pou |
12:40 | The Algorithmic Development of a Fully Asynchronous Conjugate Gradient Method (abstract) PRESENTER: Zachary Atkins |
13:05 | Dynamic Non-Uniform Randomization in Asynchronous Linear Solvers (abstract) PRESENTER: Evan Coleman |
11:25-13:30 Session 4B: Scalable Solvers for Coupled Multiphysics 2
Chair:
11:25 | An implicit, conservative, asymptotic-preserving electrostatic particle-in-cell algorithm for arbitrarily magnetized plasmas (abstract) PRESENTER: Guangye Chen |
11:50 | Fluid Preconditioning for a Fully Implicit Electromagnetic Gyrokinetic Particle-in-Cell Method (abstract) PRESENTER: Benjamin Sturdevant |
12:15 | Block Preconditioning of a Semi-Implicit Gyrokinetic Model of Fusion Plasmas (abstract) PRESENTER: Lee Ricketson |
12:40 | Enabling optimizations for reduced kinetic spectral models (abstract) PRESENTER: Oleksandr Koshkarov |
13:05 | Newton-Krylov-Multigrid approaches for mixed formulations of smectic A liquid crystals (abstract) PRESENTER: Abdalaziz Hamdan |
11:25-13:30 Session 4C: Efficient Optimization Algorithms
Chair:
11:25 | Golub-Kahan bidiagonalization with hybrid projection for streaming problems (abstract) |
11:50 | Fast algorithms for initial value control problems in diffeomorphic registration (abstract) PRESENTER: Andreas Mang |
12:15 | A new robust collective multigrid SQP-type approach for risk-adverse optimal control problems (abstract) PRESENTER: Tommaso Vanzan |
12:40 | History Matching Relative Permeability Curves with Bayesian Optimization (abstract) PRESENTER: Steven Samoil |
13:05 | Multigrid preconditioning for distributed optimal control of fractional parabolic equations (abstract) PRESENTER: Andrei Draganescu |
13:30-14:00End of Day Break
Tuesday, April 5th
View this program: with abstractssession overviewtalk overview
09:00-11:05 Session 5A: Algebraic Multigrid Methods
Chair:
09:00 | Smoothed Aggregation for Difficult Stretched Mesh and Coefficient Variation Problems (abstract) PRESENTER: Ray Tuminaro |
09:25 | Energy-minimization for Algebraic Multigrid: Robustness and Performance (abstract) PRESENTER: Andrea Franceschini |
09:50 | Adaptive algebraic multigrid based on algebraic a posteriori error estimation (abstract) PRESENTER: Kaiyi Wu |
10:15 | A Matrix-Free Approach for Algebraic Multigrid (abstract) |
10:40 | Generalizing Reduction-Based Algebraic Multigrid (abstract) PRESENTER: Tareq Uz Zaman |
09:00-11:05 Session 5B: Low-rank, Monte-Carlo, and Statistical Approximations
Chair:
09:00 | A Low-Rank Solver for the Stochastic Unsteady Navier-Stokes Equations (abstract) PRESENTER: Howard Elman |
09:25 | Monte Carlo Estimators for the Diagonals of a Matrix (abstract) PRESENTER: Arvind Saibaba |
09:50 | Matrix-based Redistribution for Improved Coarse Level Scaling in Multilevel Monte Carlo (abstract) PRESENTER: Hillary Fairbanks |
10:15 | A Multilevel Approach to Stochastic Trace Estimation (abstract) PRESENTER: Eric Hallman |
10:40 | Improved variants of the Hutch++ algorithm for trace estimation. (abstract) PRESENTER: David Persson |
09:00-11:05 Session 5C: Topics in Optimization and Control
Chair:
09:00 | Multiscale Finite Element Methods for an Elliptic Optimal Control Problem with Rough Coefficients (abstract) PRESENTER: Jose Garay |
09:25 | ON PARAMETER CASCADE APPROACH TO SOLVING CONSTRAINED NONLINEAR LEAST SQUARES PROBLEMS WITH APPLICATIONS TO EPIDEMIOLOGY (abstract) PRESENTER: Alexandra Smirnova |
09:50 | Iterative methods for interior point algorithms in the $L^2$ Optimal Transport Problem (abstract) PRESENTER: Enrico Facca |
10:15 | Solving Optimal Control Problems Containing Uncertain Coefficients with Stochastic Discontinuous Galerkin Methods (abstract) PRESENTER: Pelin Çiloğlu |
10:40 | χ2 Test for TV regularization parameter selection (abstract) |
11:05-11:25Coffee Break
11:25-13:30 Session 6A: Domain Decomposition
Chair:
11:25 | A fully algebraic spectral coarse space for overlapping Schwarz methods (abstract) PRESENTER: Alexander Heinlein |
11:50 | Polynomial Reduction with Full Domain Decomposition Preconditioner for Spectral Element Poisson Solvers (abstract) PRESENTER: Pedro Bello-Maldonado |
12:15 | Restricted Additive Schwarz Preconditioned Exact Newton with Algebraic Coarse Space (abstract) PRESENTER: Chaiyod Kamthorncharoen |
12:40 | BDDC Preconditioned P-Multigrid for High-Order Finite Elements (abstract) PRESENTER: Jeremy L Thompson |
13:05 | Adaptive Nonlinear Domain Decomposition Methods (abstract) PRESENTER: Martin Lanser |
11:25-13:30 Session 6B: Mixed Precision and Special Topics in Iterative Methods
Chair:
11:25 | Newton's Method in Mixed-Precision (abstract) |
11:50 | Multistage Mixed Precision Iterative Refinement (abstract) PRESENTER: Eda Oktay |
12:15 | Mixed-precision interior-point method for linear programming problems (abstract) PRESENTER: Jeffrey Cornelis |
12:40 | Quasi-Newton: combining Multi-Secant and Symmetry (abstract) PRESENTER: Nicolas Boutet |
11:25-13:30 Session 6C: Iterative Methods for Neural Net Training
Chair:
11:25 | A Layer-Parallel Multi-Level Optimization Approach to Training Deep Neural Networks (abstract) PRESENTER: Eric Cyr |
11:50 | Global Convergence and Stability of Stochastic Gradient Descent (abstract) |
12:15 | Sampled Limited-Memory Training (slimTrain) of Separable Deep Neural Networks (abstract) PRESENTER: Elizabeth Newman |
12:40 | Efficient estimation of the intrinsic dimension via Ritz values and orthogonal polynomials (abstract) PRESENTER: Kadir Özçoban |
13:30-14:00End of Day Break
Wednesday, April 6th
View this program: with abstractssession overviewtalk overview
09:00-11:05 Session 7A: Machine Learning for Iterative Algorithms
Chair:
09:00 | GNNs: An AI/ML metaphor we can use for iterative methods on unstructured meshes (abstract) PRESENTER: Christopher Siefert |
09:25 | Learning Aggregates and Interpolation for Algebraic Multigrid (abstract) PRESENTER: Nicolas Nytko |
09:50 | Learning an Algebraic Multigrid Prolongation Operator Using a Modified Graph Neural Network Architecture (abstract) PRESENTER: Nicholas Moore |
10:15 | Deep Learning in Adaptive Domain Decomposition Methods (abstract) PRESENTER: Axel Klawonn |
10:40 | Learning optimized domain decomposition (abstract) PRESENTER: Ali Taghibakhshi |
09:00-11:05 Session 7B: Eigenvalue Solution Methods
Chair:
09:00 | Eigenvalue solution via the use of a single random vector (abstract) |
09:25 | On the computation of dominant eigenpairs of a matrix valued linear operator (abstract) PRESENTER: Carmela Scalone |
09:50 | Low-Rank Stopping Criteria for Singular Value Decompositions (abstract) PRESENTER: Steven Goldenberg |
10:15 | A Restricted SVD based CUR Decomposition for matrix triplets (abstract) PRESENTER: Perfect Yayra Gidisu |
10:40 | A Warm-Start Krylov-Schur Algorithm for Solving a Sequence of Eigenvalue Problems (abstract) PRESENTER: Arielle Carr |
09:00-11:05 Session 7C: Transport and Nuclear Applications
Chair:
09:00 | Evaluation of the Robbins-Monro relaxation scheme for multiphysics coupling with Monte Carlo neutron transport (abstract) PRESENTER: Steven Hamilton |
09:25 | A Parareal Application for a Multilevel Quasi-Static Monte Carlo Neutron Transport Solver (abstract) PRESENTER: Evan Gonzalez |
09:50 | Solving the Neutron Transport Equation for Microreactor Modeling using Unstructured Meshes and Exascale Computing Architectures (abstract) PRESENTER: William Dawn |
10:15 | Nonlinear Iteration Method of Moments with Functional Derivatives for the Linear Boltzmann Transport Equation (abstract) |
10:40 | Krylov Linear Solvers and Quasi-Monte Carlo Methods for Transport Simulations (abstract) PRESENTER: Samuel Pasmann |
11:05-11:25Break
11:25-11:50Virtual Mini Banquet (Bighorn A link)
11:50-13:05 Session 8: Student Paper Winner Presentations (Bighorn A link)
Chair:
11:50 | A scalable and robust vertex-star relaxation for high-order FEM (abstract) PRESENTER: Pablo Brubeck |
12:15 | pISTA: preconditioned Iterative Soft Thresholding Algorithm for Graphical Lasso (abstract) PRESENTER: Gal Shalom |
12:40 | Toward Parallel in Time for Chaotic Dynamical Systems (abstract) |
13:05-13:30End of Day Break
Thursday, April 7th
View this program: with abstractssession overviewtalk overview
09:00-11:05 Session 9A: Multigrid in Time Methods and Multilevel Preconditioning
Chair:
09:00 | Performance of Multigrid Reduction in Time (MGRIT) on GPU machines (abstract) |
09:25 | Space -Time AMG for Advection - Diffusion (abstract) PRESENTER: Ahsan Ali |
09:50 | Fast multigrid reduction-in-time for linear advection (abstract) PRESENTER: Oliver Krzysik |
10:15 | Parameter-Robust Preconditioning for Oseen Iteration Applied to Navier-Stokes Control Problems (abstract) PRESENTER: Santolo Leveque |
10:40 | Multigrid-augmented deep learning preconditioners for the Helmholtz equation (abstract) PRESENTER: Eran Treister |
09:00-11:05 Session 9B: Coupling Algorithms for Heterogeneous Multiphysics Systems
Chair:
09:00 | Meshless Remap of Native Fields for Earth System Models via Generalized Moving Least Squares (abstract) PRESENTER: Paul Kuberry |
09:25 | A Discontinuous-Galerkin-in-Time Framework for Multirate Time Integration of Interface-Coupled Problems (abstract) PRESENTER: Jeffrey Connors |
09:50 | Air-Sea Light: Coupling a Simple Ocean-Atmosphere Model (abstract) PRESENTER: Michael Gaiewski |
10:15 | A Lagrange Multiplier Partitioned Scheme for Coupling Reduced Order Models (abstract) PRESENTER: Amy de Castro |
10:40 | Interface Flux Recovery Framework for Constructing Partitioned Heterogeneous Time-Integration Methods (abstract) PRESENTER: Chad Sockwell |
09:00-11:05 Session 9C: Preconditioning
Chair:
09:00 | Polynomial Approximation to the Inverse of a Matrix (abstract) PRESENTER: Ron Morgan |
09:25 | A comparative study of global coarsening and local smoothing multigrid methods on locally refined meshes for distributed matrix-free FEM computations (abstract) PRESENTER: Peter Munch |
09:50 | Fast and robust multilevel low-rank tensor solvers for elliptic PDEs (abstract) |
10:15 | A sine transform based preconditioner for all-at-once systems from time-dependent PDEs (abstract) PRESENTER: Sean Hon |
10:40 | Accelerating Jacobi Iteration for Solving Nonsymmetric Linear Systems of Equations using Scheduled Relaxation (abstract) PRESENTER: Mohammad Islam |
11:05-11:25Coffee Break
11:25-13:30 Session 10A: Discretizations and Impact on Iterative Solution
Chair:
11:25 | Looking beyond polynomial bases for wave propagation with finite elements (abstract) PRESENTER: Adeleke O Bankole |
11:50 | Meshfree Geometric Multilevel Methods (abstract) PRESENTER: Andrew Jones |
12:15 | Residual and restarting in Krylov subspace evaluation of the Phi function (abstract) PRESENTER: Mike Botchev |
12:40 | Practical Considerations for the Adoption of Anderson Acceleration in Nonlinear Diffusion Accelerated Transport (abstract) PRESENTER: Qicang Shen |
13:05 | Novel mass-based multigrid relaxation schemes for the Stokes equations (abstract) |
11:25-13:30 Session 10B: Preconditioning for Challenging Systems
Chair:
11:25 | Solving linear systems of the form ($A + \gamma UU^T){\bf x} = {\bf b}$ (abstract) |
11:50 | Preconditioned Iterative Methods for Structure-Preserving Discretisations (abstract) PRESENTER: James Jackaman |
12:15 | A MULTIGRID METHOD FOR THE BIOT’S MODEL ON LOGICALLY RECTANGULAR GRIDS (abstract) PRESENTER: Javier Zaratiegui |
12:40 | A stable mimetic finite-difference discretization for convection-dominated diffusion equations (abstract) PRESENTER: Casey Cavanaugh |
13:05 | Efficient multigrid methods for high-order nonlinear solid mechanics on emerging architectures (abstract) PRESENTER: Rezgar Shakeri |
11:25-13:30 Session 10C: Iterative Solvers in Applications
Chair:
11:25 | Waveform iterations for thermal coupling (abstract) PRESENTER: Philipp Birken |
11:50 | A highly parallel, probabilistically-based solver for nonlinear PDEs in the exascale (abstract) PRESENTER: Jorge Morón |
12:15 | A robust preconditioner for Lippmann Schwinger equation in two dimension (abstract) PRESENTER: V A Kandappan |
12:40 | Model order reduction for coupled systems (abstract) PRESENTER: Niccolò Discacciati |
13:05 | A Multidimensional Proxy Point Method and Its Applications (abstract) |
13:30-14:00End of Day Break
Friday, April 8th
View this program: with abstractssession overviewtalk overview
09:00-11:05 Session 11A: Efficient Solution Methods on Advanced Architectures
Chair:
09:00 | Algebraic multigrid using a stencil-CSR hybrid format on GPUs (abstract) |
09:25 | Solving dense linear systems on the GPU with hierarchical-matrix approximations (abstract) PRESENTER: Chao Chen |
09:50 | Reducing Communication Costs in ECG with Optimal Node Aware Communication (abstract) PRESENTER: Shelby Lockhart |
10:15 | Resilient Algorithmic Building Blocks for Decentralized Iterative Computing in the Skynet Software (abstract) PRESENTER: Colin Ponce |
10:40 | Optimal Size of the Block in Block GMRES on GPUs: Computational Model and Experiments (abstract) PRESENTER: Andrew Higgins |
09:00-11:05 Session 11B: Computational Electromagnetic and Transport Systems
Chair:
09:00 | Preconditioning for linear systems arising in implicit time integration schemes for Maxwell equations on locally refined spatial grids (abstract) PRESENTER: Pratik Mahadeo Kumbhar |
09:25 | Iteration Methods for Nonlinear Frequency-Dependent Phonon Transport Problems (abstract) PRESENTER: Nicholas Whitman |
09:50 | On constructing a physics-based initial iterate for solving drift-diffusion equations (abstract) PRESENTER: Hengbin An |
10:15 | Flexible infinite GMRES for parameterized linear systems (abstract) PRESENTER: Siobhan Correnty |
10:40 | The role of conservative and consistent iterative methods for conservation laws (abstract) PRESENTER: Viktor Linders |
09:00-11:05 Session 11C: Iterative Solution in Fluid Flow Applications
Chair:
09:00 | AMG-preconditioned primal-dual Newton-Krylov solvers for viscous-plastic sea-ice models (abstract) |
09:25 | ILU Smoothers for C-AMG with Scaled Triangular Factors (abstract) PRESENTER: Kasia Swirydowicz |
09:50 | Investigation of a Preconditioned Conjugate Gradient Method applied to Navier-Stokes Discretizations (abstract) |
10:15 | ROM Closures and Stabilizations for Under-Resolved Turbulent Flows (abstract) PRESENTER: Traian Iliescu |
10:40 | Residual Tracking and Stopping for Iterative Random Sketching (abstract) PRESENTER: Nathaniel Pritchard |
11:05-11:30End of Day Break