Raymond Stephen Tuminaro

Computational Mathematics

Author profile picture

Computational Mathematics

rstumin@sandia.gov

(925) 294-2564

Biography

I’m interested in parallel iterative methods for linear systems, numerical linear algebra, eigenvalue problems, and parallel numerical software. Special interests in algebraic multigrid (e.g. smoothed aggregation), numerical solution of Maxwell’s equations, incompressible Navier-Stokes, and block preconditioning. I have developed the Aztec iterative library as well as the ML multilevel preconditioning package. I am also part of the MueLu development team.

Education

  • Ph.D. Computer Science, Stanford University, Dec. 1989.
    • Thesis: Multigrid Algorithms for Parallel Processors. (Advisers: G. Golub & T. Chan)
  • B.S. Computer Science, Cornell University, 1984.
  • von Neumann fellowship committee (2016-2021, chair since 2020)
  • 2017-2020 Gene Golub Summer School Committee
  • 2010, 2012,2014,2016 & 2018 Co-Chair Copper Mountain Conferences on Iterative
  • 2008-2022 (even years) Guest Editor of SIAM Journal on Scientific Computing
  • 2015-2017 Program Committees: Workshop on Avancing X-cutting Ideas for Comp. climate Science, Workshop on Integrated Simulations for Magnetic Fusion Energy, two Preconditioning Conferences
  • 2010 & 2012 Editor-in-Chief of two SIAM Journal on Scientifc Computing special issues
  • 2012-2014 Section Chief of Expository Research Section in SIAM Review
  • 2005-2011 Associated Editor of SIAM Journal on Scientific Computing
  • 2011,2015 Technical Paper Committee for Super Computing 2011

Publications

Peter Brian Ohm, Matthias Mayr, Luc Berger-Vergiat, Raymond S. Tuminaro, (2022). Non-invasive Regional Multigrid for Semi-structured Grids Wccm-apcom Document ID: 1573621

Eric Christopher Cyr, John N. Shadid, Raymond S. Tuminaro, (2022). Preconditioners for Plasma Physics and Magnetohydrodynamics: Handling Multiple Timescales Preconditioning 2022International Conference on Preconditioning Techniques for Scientific and Industrial Applications Document ID: 1539805

Peter Brian Ohm, Jesus Bonilla, Edward Geoffrey Phillips, John N. Shadid, Jonathan J. Hu, Raymond S. Tuminaro, (2022). Block Preconditioning for Magnetic Confinement Fusion Relevant Resistive MHD Simulations 8th European Congress on Computational Methods in Applied Sciences and Engineering Document ID: 1539433

Peter Brian Ohm, Jesus Bonilla de Toro, Edward Phillips, John N. Shadid, Jonathan J. Hu, Raymond S. Tuminaro, (2022). Block Preconditioning for Magnetic Confinement Fusion Relevant Resistive MHD Simulations 17th Copper Mountain Conference On Iterative Methods Document ID: 1493866

Raymond S. Tuminaro, Jonathan J. Hu, Christopher Siefert, (2022). Smoothed Aggregation for Difficult Stretched Mesh and Coefficient Variation Problems 17th Copper Mountain Conference On Iterative Methods Document ID: 1493878

Jerry Watkins, Max Lewis Carlson, Carolyn Kao, Irina Kalashnikova Tezaur, Raymond S. Tuminaro, (2022). Scalability studies of Albany Land Ice: a performance portable, ice sheet solver SIAM Conference on Parallel Processing for Scientific Computing Document ID: 1470646

Peter Brian Ohm, Jonathan J. Hu, John N. Shadid, Eric Christopher Cyr, Raymond S. Tuminaro, Tobias A. Wiesner, (2022). A Monolithic Algebraic Multigrid Framework for Multiphysics Applications with Examples from Resistive MHD Electronic Transactions on Numerical Analysis Document ID: 1426688

Peter Brian Ohm, Raymond S. Tuminaro, Luc Berger-Vergiat, Matthias Mayr, (2021). Non-invasive Regional Multigrid for Semi-structured Grids 15th World Congress on Computational Mechanics Document ID: 1392717

Alexey Voronin, Yunhui He, Scott MacLachlan, Luke Olson, Raymond S. Tuminaro, (2021). Low-order preconditioning of the Stokes equations Numerical Linear Algebra with Applications https://www.osti.gov/search/identifier:1834325 Document ID: 1392626

Raymond S. Tuminaro, Alexey Voronin, Scott Machlan, Luke Olson, (2021). Algebraic Multigrid for mixed finite element discretizations of the Stokes Equations University of Maryland Numerical Analysis Seminar Document ID: 1368319

Peter Brian Ohm, Raymond S. Tuminaro, Jonathan J. Hu, John N. Shadid, Eric Christopher Cyr, Tobias Wiesner, (2021). An Algebraic Monolithic Method for Volume-coupled Multiphysics Problems The 9th ediiton of the International Conference on Computational Methods for Coupled Problems in Science and Engineering https://www.osti.gov/search/identifier:1872519 Document ID: 1318805

Christopher Siefert, Raymond S. Tuminaro, Christian Alexander Glusa, John Kaushagen, (2021). Multilevel Methods for Maxwell’s Equations SIAM Conference on Applied Linear Algebra (LA21) https://www.osti.gov/search/identifier:1869378 Document ID: 1307097

Peter Brian Ohm, Raymond S. Tuminaro, John N. Shadid, Jonathan J. Hu, Tobias Wiesner, Eric Christopher Cyr, (2021). A Monolithic Algebraic Multigrid Approach for Coupled Multiphysics Problems using the MueLu Framework Cm202120th Copper Mountain Conference On Multigrid Methods https://www.osti.gov/search/identifier:1861027 Document ID: 1292489

Peter Brian Ohm, Raymond S. Tuminaro, John N. Shadid, Jonathan J. Hu, Tobias Wiesner, (2021). An Algebraic Monolithic Method for Volume-coupled Multiphysics Problems SIAM Conference on Computational Science and Engineering https://www.osti.gov/search/identifier:1854312 Document ID: 1279979

Peter Brian Ohm, Raymond S. Tuminaro, Jonathan J. Hu, John N. Shadid, Eric Christopher Cyr, Tobias Wiesner, (2021). An Algebraic Monolithic Method for Volume-coupled Multiphysics Problems IX International Conference on Coupled Problems in Science and Engineering Document ID: 1267068

Drew Philip Kouri, Denis Ridzal, Raymond S. Tuminaro, (2020). KKT Preconditioners for PDE-Constrained Optimization with the Helmholtz Equation SIAM Journal on Scientific Computing (SISC) https://www.osti.gov/search/identifier:1784959 Document ID: 1161314

Luc Berger-Vergiat, Jonathan J. Hu, Raymond S. Tuminaro, Christopher Siefert, Christian Alexander Glusa, (2020). MueLu’s Algorithmic Performance on GPU SIAM Parallel Processing https://www.osti.gov/search/identifier:1766725 Document ID: 1092329

Irina Kalashnikova Tezaur, Jerry Watkins, Raymond S. Tuminaro, (2020). Trilinos/Kokkos-based strategy towards achieving a performance portable land-ice model BiRS workshop – mathematical modeling in glaciology https://www.osti.gov/search/identifier:1760994 Document ID: 1078706

Raymond S. Tuminaro, Luc Berger-Vergiat, Christopher Siefert, Mike, Brazell, Dimitri Mavriplis, (2019). Algebraic Multigrid for Highly Convective Flow Simulations Stanford University seminar https://www.osti.gov/search/identifier:1643436 Document ID: 1067443

Eric Christopher Cyr, John N. Shadid, Raymond S. Tuminaro, Luis (LANL) Chacon, Roger P. Pawlowski, Edward Geoffrey Phillips, Sean Miller, (2019). Techniques for Simulating Multiple Timescales with Application to Plasmas Mathematics Seminar at the University of New Mexico https://www.osti.gov/search/identifier:1646409 Document ID: 1066867

Erik Gunnar Boman, Eric Darve, Richard B. Lehoucq, Sivasankaran Rajamanickam, Raymond S. Tuminaro, Ichitaro Yamazaki, (2019). LDRD Final Report: Fast and Robust Linear Solvers based on Hierarchical Matrices https://www.osti.gov/search/identifier:1574609 Document ID: 1055945

Erik Gunnar Boman, Leopold Cambier, Chao Chen, Eric Darve, Sivasankaran Rajamanickam, Raymond S. Tuminaro, (2019). A Preconditioner based on Sparsified Nested Dissection and Low-Rank Approximations Householder Symposium Document ID: 1054973

Raymond S. Tuminaro, John N. Shadid, Eric Christopher Cyr, Paul Lin, Roger P. Pawlowski, Edward Geoffrey Phillips, Tobias Wiesner, James Adler, Tom Benson, Luis Chacon, Patrick Farrell, Ari Rappaport, Scott Maclachlan, Jonathan J. Hu, Luc Berger-Vergiat, Christian Alexander Glusa, Christopher Siefert, (2019). Scalable Preconditioners to Improve Time to Solution for Magnetohydrodynamics Applications Computer Science and Information Science External Review Board https://www.osti.gov/search/identifier:1645823 Document ID: 998732

Chao Chen, Leopold Cambier, Erik Gunnar Boman, Sivasankaran Rajamanickam, Raymond S. Tuminaro, Eric Darve, (2019). A Robust Hierarchical Solver for Ill-Conditioned Systems with Applications to Ice Sheet Modeling Journal of Computational Physics https://www.osti.gov/search/identifier:1559514 Document ID: 997539

Leopold Cambier, Chao Chen, Erik Gunnar Boman, Sivasankaran Rajamanickam, Raymond S. Tuminaro, Eric Darve, (2019). SpaND: An Algebraic Sparsified Nested Dissection Algorithm Using Low-Rank Approximations Preconditioning’19 https://www.osti.gov/search/identifier:1641027 Document ID: 985040

Raymond S. Tuminaro, Luc Berger-Vergiat, Travis C. Fisher, Morgan Howard Davis, M. x Brazell, D. x Mavriplis, (2019). Algebraic Multigrid for Hypersonic Simulations Sparse Days https://www.osti.gov/search/identifier:1648848 Document ID: 984676

Raymond S. Tuminaro, Luc Berger-Vergiat, M. x Mayr, P. x Ohm, (2019). Multigrid methods for partially structured grids: framework & structured performance International Congress on Industrial and Applied Mathematics 2019 Document ID: 984697

Raymond S. Tuminaro, Luc Berger-Vergiat, Travis C. Fisher, Micah Andrew Howard, Christopher Siefert, Mike Brazil, Dimitri x Mavriplis, (2019). Algebraic Multigrid for Hypersonic Simulations Preconditioning 2019 https://www.osti.gov/search/identifier:1640941 Document ID: 984361

Erik Gunnar Boman, Leopold Cambier, Chao Chen, Eric Darve, Sivasankaran Rajamanickam, Raymond S. Tuminaro, (2019). SpaND: An Algebraic Sparsified Nested Dissection Algorithm Using Low-Rank Approximations Preconditioning ’19 https://www.osti.gov/search/identifier:1639964 Document ID: 960948

Luc Berger-Vergiat, Raymond S. Tuminaro, Peter Brian Ohm, (2019). Structured grid approach to accelerate multigrid on NGP 19th Copper Mountain conference on Multigrid Methods https://www.osti.gov/search/identifier:1639566 Document ID: 947889

Luc Berger-Vergiat, Raymond S. Tuminaro, Jonathan J. Hu, Christopher Siefert, (2019). A multigrid approach to solve hypersonic flow problems Siam Cse 2019 https://www.osti.gov/search/identifier:1602113 Document ID: 925360

Ari Edward Rappaport, John N. Shadid, Luc Berger-Vergiat, Raymond S. Tuminaro, Jehanzeb Chaudhry, (2019). Black Box Multigrid for MHD Siam Cse 2019 https://www.osti.gov/search/identifier:1601930 Document ID: 925088

Matthew Hoffman, Mauro Perego, Stephen Price, William Lipscomb, Tong Zhang, Douglas Jacobsen, Irina Kalashnikova Tezaur, Andrew G. Salinger, Raymond S. Tuminaro, Luca Bertagna, (2019). MPAS-Albany Land Ice (MALI): A Variable-Resolution Ice Sheet Model for Earth System Modeling Using Voronoi Grids Geoscientific Model Development https://www.osti.gov/search/identifier:1497626 Document ID: 925051

Raymond S. Tuminaro, Luc Berger-Vergiat, Jonathan J. Hu, Christopher Siefert, Matthias Mayr, (2019). Non-invasive Semi-Structured Multigrid on Advanced Architectures 2019 ASCR Applied Mathematics Principal Investigators (PI) Meeting https://www.osti.gov/search/identifier:1595908 Document ID: 912935

Raymond S. Tuminaro, Jonathan J. Hu, Christopher Siefert, Luc Berger-Vergiat, Mattias Mayr, (2019). Non-invasive Semi-Structured Multigrid on Advanced Architectures 2019 ASCR Applied Mathematics Principal Investigators (PI) Meeting https://www.osti.gov/search/identifier:1595907 Document ID: 912894

Luc Berger-Vergiat, Christian Alexander Glusa, Jonathan J. Hu, Christopher Siefert, Raymond S. Tuminaro, Mayr Matthias, Prokopenko Andrey, Wiesner Tobias, (2019). MueLu User?s Guide https://www.osti.gov/search/identifier:1491860 Document ID: 902759

Leopold Cambier, Erik Gunnar Boman, Sivasankaran Rajamanickam, Raymond S. Tuminaro, Eric Darve, (2019). An Algebraic Sparsified Nested Dissection Algorithm using Low-Rank Approximations SIAM J. on Matrix Analysis https://www.osti.gov/search/identifier:1697983 Document ID: 902495

Leopold Cambier, Chao Chen, Eric Darve, Erik Gunnar Boman, Sivasankaran Rajamanickam, Raymond S. Tuminaro, (2018). An Algebraic Sparsified Nested Dissection Algorithm using Low-Rank Approximations Workshop on Fast Direct Solvers https://www.osti.gov/search/identifier:1574602 Document ID: 889441

Gauthier Becker, Christopher Siefert, Raymond S. Tuminaro, Huafei Sun, Dakshina Valiveti, Aruna Mohan, Jichao Yin, Hao Huang, (2018). High resolution viscous fingering simulation in miscible displacement using a p-adaptive discontinuous Galerkin method with algebraic multigrid preconditioner Journal of Computational Physics https://www.osti.gov/search/identifier:1473935 Document ID: 854100

Raymond S. Tuminaro, tobias wiesner (Leica Geosystems AG), Eric Christopher Cyr, John N. Shadid, (2018). Monolithic Multigrid for Multiphysics Applications Arising from Resistive MHD 13th World Congress in Computational Mechanics https://www.osti.gov/search/identifier:1574277 Document ID: 841265

David R. Noble, Raymond S. Tuminaro, (2018). Applying Algebraic Multigrid Methods to Dynamic, Enriched, Conformal Decomposition Finite Element Methods for Multi-material Transport 6th European Conference on Computational Mechanics (ECCM 6) 7th European Conference on Computational Fluid Dynamics (ECFD 7) https://www.osti.gov/search/identifier:1525943 Document ID: 808251

Jonathan J. Hu, Luc Berger-Vergiat, Raymond S. Tuminaro, (2018). Solvers for Hypersonic Flow Applications Fifteenth Copper Mountain Conference On Iterative Methods https://www.osti.gov/search/identifier:1806942 Document ID: 783640

Luc Berger-Vergiat, Raymond S. Tuminaro, Peter Brian Ohm, (2018). Structured grid algorithms in MueLu 15th Copper Mountain Conference On Iterative Methods https://www.osti.gov/search/identifier:1506566 Document ID: 783293

Matthias Mayr, Massimiliano Lupo Pasini, Luc Berger-Vergiat, Raymond S. Tuminaro, (2018). A non-invasive matrix-based multigrid scheme for partially structured grids 15th Copper Mountain Conference On Iterative Methods https://www.osti.gov/search/identifier:1505279 Document ID: 783604

Erik Gunnar Boman, Chao Chen, Eric Darve, Sivasankaran Rajamanickam, Raymond S. Tuminaro, (2018). A Hierarchical Low-Rank Solver for Sparse Linear Systems and Its Variations SIAM Conference on Parallel Processing https://www.osti.gov/search/identifier:1498648 Document ID: 771875

Raymond S. Tuminaro, Jonathan J. Hu, Christopher Siefert, Luc Berger-Vergiat, Matthias Mayr, (2018). Leveraging Problem Structure within Multilevel Solvers to Improve Robustness & Performance on Advanced Architectures 2017 ASCR Applied Mathematics Principal Investigators Meeting https://www.osti.gov/search/identifier:1497567 Document ID: 671065

Raymond S. Tuminaro, Luc Berger-Vergiat, Matthias Mayr, John N. Shadid, Eric Christopher Cyr, Massimiliano (Emory) Lupo Pasini, Peter (Tufts) Ohm, (2018). Leveraging Application Structure Within Next Generation Multigrid Solvers SIAM Conference on Parallel Processing for Scientific Computing https://www.osti.gov/search/identifier:1497566 Document ID: 771424

David R. Noble, Raymond S. Tuminaro, (2018). Applying Algebraic Multigrid Methods to Dynamic, Enriched, Conformal Decomposition Finite Element Methods for Multi-material Transport ECCM 2018 6th European Conference on Computational Mechanics Document ID: 749480

Luc Berger-Vergiat, Luc Berger-Vergiat, Michael Joseph Brazell, Michael Joseph Brazell, Christian Alexander Glusa, Christian Alexander Glusa, Jonathan J. Hu, Jonathan J. Hu, Dimitri Mavriplis, Dimitri Mavriplis, Christopher Siefert, Christopher Siefert, Raymond S. Tuminaro, Raymond S. Tuminaro, (2017). MueLu: ATDM work 2017 ASC/ATDM Linear solvers review Document ID: 704117

Kevin Thomas Carlberg, Sofia (Emory University) Guzzetti, Raymond S. Tuminaro, (2017). Multigrid Methods for Uncertainty Propagation in (large-scale) Networks via Domain Decomposition Emory University seminar https://www.osti.gov/search/identifier:1509633 Document ID: 693008

Erik Gunnar Boman, Chao Chen, Eric Darve, Sivasankaran Rajamanickam, Raymond S. Tuminaro, (2017). A Hierarchical Low-Rank Solver for Large, Sparse Linear Systems Householder Symposium https://www.osti.gov/search/identifier:1471959 Document ID: 626376

Erik Gunnar Boman, Chao Chen, Eric Darve, Sivasankaran Rajamanickam, Raymond S. Tuminaro, (2017). A Parallel Hierarchical Low-Rank Solver for General Sparse Matrices Sparse Days 2017 https://www.osti.gov/search/identifier:1471958 Document ID: 670675

Irina Kalashnikova Tezaur, Jerry Watkins, Raymond S. Tuminaro, Irina (LANL) Demeshko, (2017). Performance & Performance Portability of the Albany/FELIX Finite Element Land-Ice Solver SIAM Conference on Mathematical and Computational Issues in the Geosciences https://www.osti.gov/search/identifier:1469061 Document ID: 671263

Raymond S. Tuminaro, Mauro Perego, Irina Kalashnikova Tezaur, Andrew G. Salinger, Steven (LANL) Price, (2017). Algebraic multigrid solvers for thin-domain problems: application to ice sheet modeling International Conference On Preconditioning Techniques For Scientific And Industrial Applications https://www.osti.gov/search/identifier:1462652 Document ID: 658669

Tobias Albert Wiesner, John N. Shadid, Eric Christopher Cyr, Jonathan J. Hu, Raymond S. Tuminaro, (2017). MueLu – a multigrid framework for multiphysics preconditioners Copper Mountain Conference on Multigrid Methods https://www.osti.gov/search/identifier:1456404 Document ID: 610969

Raymond S. Tuminaro, Mauro Perego, Irina Kalashnikova Tezaur, Andrew G. Salinger, stephen (LANL) price, (2017). An algebraic multigrid linear solver for extruded meshes: application to ice sheet simulation IACM 19th International Conference on Finite Elements in Flow Problems – FEF 2017 https://www.osti.gov/search/identifier:1456365 Document ID: 610846

Irina Kalashnikova Tezaur, Jerry Watkins, Raymond S. Tuminaro, Irina (LANL) Demeshko, (2017). Performance and Performance Portability of the Albany/FELIX Finite Element Land-Ice Solver SIAM Conference on Computational Methods for the Geosciences Document ID: 600066

Raymond S. Tuminaro, David R. Noble, (2017). An Algebraic Multigrid Approach to PDE Systems with Variable Degrees-of-Freedom Per Node SIAM Computational Science and Engineering Meeting https://www.osti.gov/search/identifier:1427437 Document ID: 589294

Erik Gunnar Boman, Chao Chen, Eric Darve, Sivasankaran Rajamanickam, Raymond S. Tuminaro, (2017). Hierarchical Matrices and Low-Rank Methods for Extreme-Scale Solvers SIAM Conference on Computational Science & Eng. (CSE) https://www.osti.gov/search/identifier:1424840 Document ID: 599576

Tobias Albert Wiesner, Raymond S. Tuminaro, Eric Christopher Cyr, John N. Shadid, Jonathan J. Hu, (2017). Multiphysics Preconditioning with the MueLu Multigrid Library SIAM Conference on Computational Science and Engineering (CSE) https://www.osti.gov/search/identifier:1458245 Document ID: 589306

Irina Kalashnikova Tezaur, Andrew G. Salinger, Mauro Perego, Raymond S. Tuminaro, John Davis Jakeman, Michael S. Eldred, Jerry Watkins, Stephen (LANL) Price, Irina (LANL) Demeshko, (2017). The Albany/FELIX Land-Ice Dynamical Core Albany User Group Meeting https://www.osti.gov/search/identifier:1416697 Document ID: 566474

Raymond S. Tuminaro, Eric Christopher Cyr, John N. Shadid, David R. Noble, Luc Berger-Vergiat, Jonathan J. Hu, Andrey Prokopenko, Christopher Siefert, Tobias Albert Wiesner, Mauro Perego, Andrew G. Salinger, Irina Kalashnikova Tezaur, Stephen Price, (2016). Toward Robust Scalable Algebraic Multigrid Solvers UNM Applied Math & Statistics Seminar https://www.osti.gov/search/identifier:1406967 Document ID: 532614

Irina Kalashnikova Tezaur, Andrew G. Salinger, Mauro Perego, Raymond S. Tuminaro, Stephen (LANL) Price, Jerry Watkins, Glen Hansen, (2016). The Albany/FELIX First-Order Stokes Finite Element Ice Sheet Dynamical Core Built Using Trilinos Software Components: Performance, Next-Generation Capabilities and Validation SIAM Mathematics of Planet Earth https://www.osti.gov/search/identifier:1392754 Document ID: 529647

Edward Geoffrey Phillips, Eric Christopher Cyr, John N. Shadid, Raymond S. Tuminaro, (2016). Block Preconditioners for Mixed Discretization MHD and Continuum Plasma Simulations Enabled by Teko 12th World Congress on Computational Mechanics https://www.osti.gov/search/identifier:1373178 Document ID: 476656

Kevin Thomas Carlberg, Virginia Forstall, Raymond S. Tuminaro, (2016). Krylov-Subspace Recycling via the POD-Augmented Conjugate Gradient Method 2016 SIAM Annual Meeting https://www.osti.gov/search/identifier:1372606 Document ID: 476008

Andrey V Prokopenko, Raymond S. Tuminaro, (2016). An algebraic multigrid method for Q2-Q1 mixed discretizations of the Navier-Stokes equations Numerical Linear Algebra with Applications https://www.osti.gov/search/identifier:1399874 Document ID: 475550

Tobias Albert Wiesner, John N. Shadid, Eric Christopher Cyr, Raymond S. Tuminaro, Jonathan J. Hu, (2016). Multigrid framework for multiphysics problems SIAM Annual Meeting 2016 https://www.osti.gov/search/identifier:1368650 Document ID: 464652

Raymond S. Tuminaro, Mauro Perego, Irina Kalashnikova Tezaur, Andrew G. Salinger, (2016). A Scalable Solver Algorithm to Enable Sea-Level Rise Prediction using Agile Components 2016 Cis Erb https://www.osti.gov/search/identifier:1368894 Document ID: 453754

Kevin Thomas Carlberg, Virginia (University of Maryland) Forstall, Raymond S. Tuminaro, (2016). Applying model reduction to Krylov subspace recycling Fourteenth Copper Mountain Conference on Iterative Methods https://www.osti.gov/search/identifier:1364864 Document ID: 430477

Raymond S. Tuminaro, David R. Noble, Andrey V Prokopenko, (2016). A Quasi-Algebraic Multigrid Approach to PDE systems with Variable Degrees-of-Freedom Per Node Fourteenth Copper Mountain Conference on Iterative Methods https://www.osti.gov/search/identifier:1422052 Document ID: 420015

Kevin Thomas Carlberg, Virginia (University of Maryland) Forstall, Raymond S. Tuminaro, (2016). Krylov-subspace recycling via the POD-augmented conjugate-gradient method SIAM Journal on Matrix Analysis https://www.osti.gov/search/identifier:1251146 Document ID: 397113

Thomas benson, James Adler, Eric Christopher Cyr, Scott Maclachlan, Raymond S. Tuminaro, (2016). Monolithic Multigrid for a B-field Incompressible, Resistive Magnetohydrodynamics Model Fourteenth Copper Mountain Conference on Iterative Methods https://www.osti.gov/search/identifier:1341371 Document ID: 387088

Irina Kalashnikova Tezaur, Andrew G. Salinger, Mauro Perego, Raymond S. Tuminaro, (2016). Component-Based Application Code Development, Part 2: Demonstration on a Land-Ice Model and Proposed Extension to Other Climate Components Advancing X-cutting Ideas for Computational Climate Science (AXICCS) 2016 https://www.osti.gov/search/identifier:1422149 Document ID: 386811

Kevin Thomas Carlberg, Virginia (University of Maryland) Forstall, Raymond S. Tuminaro, (2015). Krylov-subspace recycling via the POD-augmented conjugate-gradient algorithm SIAM Journal on Matrix Analysis Document ID: 376079

Irina Kalashnikova Tezaur, Andrew G. Salinger, Mauro Perego, Raymond S. Tuminaro, (2015). Component-Based Application Code Development, Part 2: Demonstration on a Land-Ice Model and Proposed Extension to Other Climate Components DOE Workshop on Advancing Cross-cutting Ideas for Computational Climate Science https://www.osti.gov/search/identifier:1333792 Document ID: 364956

Andrew G. Salinger, Andrew Michael Bradley, Irina Demeshko, Glen Hansen, Mauro Perego, Eric T. Phipps, Irina Kalashnikova Tezaur, Raymond S. Tuminaro, Brian (RPI) Granzow, Dan (RPI) Ibanez, Mark (RPI) Shephard, (2015). Albany: Integrating Algorithmic Components to Build Advanced Applications SciDAC-3 PI Meeting https://www.osti.gov/search/identifier:1333895 Document ID: 308297

James H. (Tufts University) Adler, Thomas R. (Tufts University) Benson, Eric Christopher Cyr, Scott P. (Memorial University of Newfoundland) MacLachlan, Raymond S. Tuminaro, (2015). Monolithic Multigrid Methods For Two-dimensional Resistive Magnetohydrodynamics SIAM Journal on Scientific Computing https://www.osti.gov/search/identifier:1263651 Document ID: 343004

Raymond S. Tuminaro, Mauro Perego, Irina Kalashnikova Tezaur, Andrew G. Salinger, Stephen (LANL) Price, (2015). A Matrix Dependent / Algebraic Multigrid Approach for Extruded Meshes with Applications to Ice Sheet Modeling SIAM Journal on Scientific Computing https://www.osti.gov/search/identifier:1334163 Document ID: 341902

Irina Kalashnikova Tezaur, Andrew G. Salinger, Mauro Perego, John Davis Jakeman, Michael S. Eldred, Irina Demeshko, Raymond S. Tuminaro, Stephen (LANL) Price, (2015). Albany/FELIX: A Robust & Scalable Trilinos-Based Finite-Element Ice Flow Dycore Built for Advanced Architectures & Analysis International Conference on Industrial and Applied Mathematics (ICIAM) 2015 https://www.osti.gov/search/identifier:1301963 Document ID: 319387

Raymond S. Tuminaro, Andrey V Prokopenko, (2015). Algebraic Multigrid Preconditioners for Q2-Q1 discretizations of the incompressi ble Navier-Stokes equations 13th US National Congress on Computational Mechanics https://www.osti.gov/search/identifier:1339228 Document ID: 318469

Christopher Siefert, Raymond S. Tuminaro, Gauthier Becker, Huafei Sun, Jichao Yin, Hao Huang, (2015). Linear solver strategy for coupled and implicit discontinuous Galerkin method to model miscible displacement with adverse mobility ratio 13th U.S. National Congress on Computational Mechanics (USNCCM13) https://www.osti.gov/search/identifier:1513572 Document ID: 308344

Irina Kalashnikova Tezaur, Mauro Perego, Raymond S. Tuminaro, Andrew G. Salinger, John Davis Jakeman, Michael S. Eldred, Lili (SC) Ju, Tong (SC) Zhang, Max (FSU) Gunzburger, Stephen (LANL) Price, (2015). Progress on the PISCEES FELIX Ice Sheet Dynamical Cores SciDAC Principal Investigators Meetin https://www.osti.gov/search/identifier:1576124 Document ID: 308302

Irina Kalashnikova Tezaur, Raymond S. Tuminaro, Mauro Perego, Andrew G. Salinger, Steven (LANL) Price, (2015). On the scalability of the Albany/FELIX first-order Stokes approximation ice sheet solver for large-scale simulations of the Greenland and Antarctic ice sheets International Conference on Computational Science (ICCS) 2015 https://www.osti.gov/search/identifier:1258248 Document ID: 275738

Raymond S. Tuminaro, Irina Kalashnikova Tezaur, Mauro Perego, Andrew G. Salinger, Steve Price, (2015). A Hybrid Operator Dependent MG / AMG Approach: Application to Ice Sheet Modeling Copper Mountain Conference on Multigrid Methods https://www.osti.gov/search/identifier:1331648 Document ID: 232940

Irina Kalashnikova Tezaur, Andrew G. Salinger, Mauro Perego, Raymond S. Tuminaro, (2015). On the Development & Performance of a First Order Stokes Finite Element Ice Sheet Dycore Built Using Trilinos Software Components SIAM Conference on Engineering & Computational Science https://www.osti.gov/search/identifier:1241279 Document ID: 232377

Irina Kalashnikova Tezaur, Mauro Perego, Andrew G. Salinger, Raymond S. Tuminaro, Stephen (LANL) Price, (2015). Update on the Albany/FELIX First Order Stokes Solver and the CISM-Albany and MPAS-Albany Dycores 2015 CESM Land Ice Working Group (LIWG) Meeting https://www.osti.gov/search/identifier:1504179 Document ID: 220690

Irina Kalashnikova Tezaur, Raymond S. Tuminaro, Mauro Perego, Andrew G. Salinger, Stephen (LANL) Price, (2015). On the scalability of the Albany/FELIX first-order Stokes approximation ice sheet solver for large-scale simulations of the Greenland and Antarctic ice sheets Numerical and Computational Developments to Advance Multiscale Earth System Models (MSESM)/International Conference on Computational Science (ICCS15) https://www.osti.gov/search/identifier:1244863 Document ID: 219962

John N. Shadid, Roger P. Pawlowski, Eric Christopher Cyr, Raymond S. Tuminaro, Luis Chacon, Paula D. Weber, (2014). Scalable Implicit Incompressible Resistive MHD with Stabilized FE and Fully-coupled Newton-Krylov-AMG Computer Methods in Applied Mechanics and Engineering https://www.osti.gov/search/identifier:1310309 Document ID: 219034

Eric Christopher Cyr, John N. Shadid, Edward Geoffrey Phillips, Raymond S. Tuminaro, Roger P. Pawlowski, Paul Lin, Luis (LANL) Chacon, (2014). Block Preconditioning for Multi-physics: From Jacobi to Schur Complements Project Meeting at Penn State https://www.osti.gov/search/identifier:1367654 Document ID: 208091

Paul Lin, John N. Shadid, Raymond S. Tuminaro, Marzio Sala, (2014). Performance of Multilevel Preconditioners for Flow and Transport SIAM Conference on Parallel Processing for Scientific Computation https://www.osti.gov/search/identifier:1367654 Document ID: 5220658

Sandra Karen Begay, John N. Shadid, Raymond S. Tuminaro, Paul Lin, (2014). Multilevel Domain Decomposition Preconditioner Based on Aggregation Procedures Copper Mountain Conference on Multigrid Methods https://www.osti.gov/search/identifier:1367654 Document ID: 5221024

Alan P. Zelicoff, Jaideep Ray, Raymond S. Tuminaro, C. C. DOUGLAS, D. T. THORNE, (2014). Cache Aware Multigrid for Variable Coefficient Elliptic Problems on Adaptive Mesh Refinement Hierarchies Numerical Linear Algebra and Applications https://www.osti.gov/search/identifier:1367654 Document ID: 5221057

Alan P. Zelicoff, Raymond S. Tuminaro, Mark F Adams, Paul Lin, John N. Shadid, Marzio Sala, (2014). Multilevel Solvers A Workshop on Methods for Computational Physics and Modern Software Practice https://www.osti.gov/search/identifier:1367654 Document ID: 5221058

M. Drohmann, Raymond S. Tuminaro, Paul T. Boggs, Jaideep Ray, Bart G van Bloemen Waanders, Kevin Thomas Carlberg, (2014). Breaking Computational Barriers: Real-time Analysis and Optimization with Large-scale Nonlinear Models via Model Reduction https://www.osti.gov/search/identifier:1323654 Document ID: 207896

Jonathan J. Hu, Andrey V Prokopenko, Tobias A. Wiesner, Christopher Siefert, Raymond S. Tuminaro, (2014). MueLu User’s Guid for Trilinos Version 11.12 https://www.osti.gov/search/identifier:1160320 Document ID: 187226

Irina Kalashnikova Tezaur, Andrew G. Salinger, Mauro Perego, Raymond S. Tuminaro, (2014). On the Development and Performance of a First Order Stokes Finite Element Ice Sheet Dynamical Core Built Using Trilinos Software Components 2015 SIAM Conference on Computational Science and Engineering Document ID: 144163

Irina Kalashnikova Tezaur, Andrew G. Salinger, Mauro Perego, Raymond S. Tuminaro, Stephen Price, (2014). An Update on the Albany/FELIX First- Order Stokes Finite Element Solver & Its Coupling to Land Ice Dycores CESM Annual Workshop https://www.osti.gov/search/identifier:1497517 Document ID: 101379

Stuart L. Kupferman, Mauro Perego, Raymond S. Tuminaro, Steven Price, (2014). The Albany/FELIX First Order Stokes Dycore CESM Land Ice Working Group Meeting https://www.osti.gov/search/identifier:1140556 Document ID: 5332192

Irina Kalashnikova Tezaur, Andrew G. Salinger, Mauro Perego, Raymond S. Tuminaro, John Davis Jakeman, (2014). FELIX: The Albany Ice Sheet Modeling Code Albany User Group Meeting https://www.osti.gov/search/identifier:1140457 Document ID: 5331633

Andrey V Prokopenko, Jonathan J. Hu, Raymond S. Tuminaro, Jeremie Gaidamour, (2013). On Parallelization of Energy Minimizing Multigrid SIAM Annual Meeting https://www.osti.gov/search/identifier:1113067 Document ID: 5324399

Andrey V Prokopenko, Jonathan J. Hu, Raymond S. Tuminaro, Jeremie Gaidamour, (2013). Algebric Multigrid using Energy-Minimization in Parallel Setting International Conference on Preconditioning Techniques for Scientific and Industrial Applications https://www.osti.gov/search/identifier:1083709 Document ID: 5323681

John N. Shadid, Raymond S. Tuminaro, Roger P. Pawlowski, Luis Chacon, (2013). Approximate Block Factorization Preconditioners for 2D and 3D Incompressible MHD Coupled Problems 2013 https://www.osti.gov/search/identifier:1082629 Document ID: 5323143

Stuart L. Kupferman, Irina Kalashnikova Tezaur, Mauro Perego, Raymond S. Tuminaro, Michael S. Eldred, John Davis Jakeman, (2013). Rapid Development of an Ice Sheet Climate Application using the Components-Based Approach CIS External Review https://www.osti.gov/search/identifier:1661056 Document ID: 5322040

Andrey V Prokopenko, Jonathan J. Hu, Raymond S. Tuminaro, Jeremie Gaidamour, (2013). Energy Minimization in Parallel Setting 16th Copper Mountain Conference on Multigrid Methods https://www.osti.gov/search/identifier:1145360 Document ID: 5320105

Roger P. Pawlowski, Eric Christopher Cyr, John N. Shadid, Raymond S. Tuminaro, Paul Lin, (2013). Performance of Efficient AMG Based Preconditioners for Implicit Resistive MHD 2013 SIAM Conference on Computational Science and Engineering https://www.osti.gov/search/identifier:1067808 Document ID: 5319535

Stuart L. Kupferman, Raymond S. Tuminaro, (2013). A New Unstructured Variable-Resolution Finite Element Ice Sheet Stress-Velocity Solver within the MPAS/Trilinos FELIX Dycore of PISCEES Land Ice Working Group Meeting https://www.osti.gov/search/identifier:1145231 Document ID: 5318673

John N. Shadid, Raymond S. Tuminaro, Roger P. Pawlowski, Paul Lin, Luis Chacon, (2012). Block Preconditioning for Multi-physics: From Jacobi to Schur Complements Penn State Mathematics DepartmentCCMA Luncheon Seminar https://www.osti.gov/search/identifier:1072495 Document ID: 5315072

John N. Shadid, Raymond S. Tuminaro, Roger P. Pawlowski, Luis Chacon, (2012). A New Approximate Block Factorization Preconditioner For 2d Incompressible (reduced) Resistive Mhdresistive Mhd SIAM Journal on Scientific Computing https://www.osti.gov/search/identifier:1073479 Document ID: 5312015

Paul Lin, John N. Shadid, Raymond S. Tuminaro, Jonathan J. Hu, (2012). Towards Scalable Algebraic Multigrid Preconditioners for Parallel Drift-Diffusion and Magnetohydrodynamic Simulations International Workshop Modeling and Simulation of Transport Phenomena https://www.osti.gov/search/identifier:1116587 Document ID: 5311053

Jeremie Gaidamour, Raymond S. Tuminaro, Christopher Siefert, (2012). A General AMG Strategy for Addressing the Near Null-space Based on Energy Minimization The 20th International Conference on Domain Decomposition Methods https://www.osti.gov/search/identifier:1120893 Document ID: 5291437

Axel Gerstenberger, Raymond S. Tuminaro, (2012). Algebraic multigrid techniques for the extended finite element method Copper Ountain Conference on Multigrid Methods https://www.osti.gov/search/identifier:1120570 Document ID: 5292965

Paul Lin, John N. Shadid, Raymond S. Tuminaro, Jonathan J. Hu, (2012). HIgh Fidelity Semiconductor Device Simulations on Massively Parallel Platforms SC11 Supercomputing Conference https://www.osti.gov/search/identifier:1118478 Document ID: 5301759

Kevin Thomas Carlberg, Raymond S. Tuminaro, Paul T. Boggs, (2012). Efficient structure-preserving model reduction for nonlinear mechanical systems with application to structural dynamics: presentation 53rd AIAA Structures, Structural Dynamics, and Materials Conference https://www.osti.gov/search/identifier:1067811 Document ID: 5307094

Jeremie Gaidamour, Christopher Siefert, Raymond S. Tuminaro, Tobias Wiesner, (2012). MueLu A Flexible, Parallel Multigrid Framework Copper Mountain Conference on Iterative Methods https://www.osti.gov/search/identifier:1117538 Document ID: 5306666

Christopher Siefert, Raymond S. Tuminaro, Axel Gerstenberger, Gergina Pencheva, (2012). Smoothed-Aggregation Algebraic Multigrid for Porous Media Simulations 15th SIAM Conference on Parallel Processing for Scientific Computing https://www.osti.gov/search/identifier:1118177 Document ID: 5304283

Axel Gerstenberger, Raymond S. Tuminaro, (2012). An algebraic multigrid approach to solve XFEM based fracture problems Internation Journal for Numerical Methods in Engineering https://www.osti.gov/search/identifier:1145347 Document ID: 5303945

Jeremie Gaidamour, Christopher Siefert, Raymond S. Tuminaro, Axel Gerstenberger, Tobias Wiesner, (2011). MueLu: A Framework for Developing Scalable Multigrid Preconditioners SuperComputing 2011 https://www.osti.gov/search/identifier:1111588 Document ID: 5301833

John N. Shadid, Raymond S. Tuminaro, (2011). Teko: A package for block preconditioning Trilinos User Group https://www.osti.gov/search/identifier:1118543 Document ID: 5301240

Axel Gerstenberger, Raymond S. Tuminaro, (2011). Algebraic Multigrid Techniques for the eXtended Finite Element Method 48th Annual Technical Conference of Society of Engineering Sciences https://www.osti.gov/search/identifier:1107002 Document ID: 5300430

John N. Shadid, Raymond S. Tuminaro, (2011). Stabilization and Scalable Block Preconditioning for the Navier-Stokes Equations Journal of Computational Physics https://www.osti.gov/search/identifier:1106174 Document ID: 5299130

Paul Lin, John N. Shadid, Raymond S. Tuminaro, (2011). Performance of an AMG-Based Preconditioning Technique for Fully-Coupled Solution of Large-Scale Multiphysics Systems 7th International Congress on Industrial and Applied Mathematics – ICIAM 2011 https://www.osti.gov/search/identifier:1140618 Document ID: 5296824

Axel Gerstenberger, Raymond S. Tuminaro, (2011). Algebraic Multigrid Techniques for the eXtended Finite Element MethodeXtended Finite Element Method 11th U.S. National Congress on Computational Mechanics https://www.osti.gov/search/identifier:1106261 Document ID: 5296976

Jeremie Gaidamour, Jonathan J. Hu, Raymond S. Tuminaro, Christopher Siefert, (2011). MueMat: a MATLAB Toolbox to Experiment with New Multigrid Preconditioners 7th International Congress on Industrial and Applied Mathematics https://www.osti.gov/search/identifier:1140699 Document ID: 5296664

Alan P. Zelicoff, Jeremie Gaidamour, Christopher Siefert, Raymond S. Tuminaro, (2011). Algebraic Multigrid for Systems of PDEs Based on Energy Minimization Principles 11th Internation Congress on Industrial and Applied Mathematics https://www.osti.gov/search/identifier:1140298 Document ID: 5296595

John N. Shadid, Roger P. Pawlowski, Raymond S. Tuminaro, Luis Chacon, (2011). Approximate Block Factorization Preconditioners for Primitive Variable Incompressible Resistive MHD Finite Elements in Flow conference https://www.osti.gov/search/identifier:1108774 Document ID: 5292758

Jeremie Gaidamour, Christopher Siefert, Raymond S. Tuminaro, (2011). Algebraic Multigrid using Energy-Minimization: a general framework to develop intergrid transfer operator International Conference On Preconditioning Techniques For Scientific And Industrial Applications https://www.osti.gov/search/identifier:1106994 Document ID: 5294596

Jeremie Gaidamour, Jonathan J. Hu, Christopher Siefert, Raymond S. Tuminaro, (2011). Designing an extensible framework for multigrid algorithm research 15th Copper Mountain Conference on Multigrid Methods https://www.osti.gov/search/identifier:1120626 Document ID: 5293076

Erik Gunnar Boman, Axel Gerstenberger, Raymond S. Tuminaro, Haim Waisman, Badri Hiriyur, Ravindra Duddu, David Keyes, (2011). Progress on Ice Mechanics Modeling and Scalable Algorithms for Ice Fracture Land Ice Working Group (LIWG) Meeting https://www.osti.gov/search/identifier:1140504 Document ID: 5290330

Heidi K. Thornquist, Ting Mei, Ryan Nong, Keith Santarelli, Raymond S. Tuminaro, Yao Chen, (2010). Solution Methods for Very Highly Integrated Circuits https://www.osti.gov/search/identifier:1011611 Document ID: 5290202

Christopher Siefert, Raymond S. Tuminaro, Stefan P. Domino, Allen C. Robinson, Ian Karlin, (2010). Highly Scalable Linear Solvers on Thousands of Processors https://www.osti.gov/search/identifier:993900 Document ID: 5275648

John N. Shadid, Raymond S. Tuminaro, (2010). Developing Block Preconditioners for Multiphysics Applications Using the Trilinos Package Teko Trilinos Package Teko DOE AMR PI Meeting https://www.osti.gov/search/identifier:1013781 Document ID: 5282697

John N. Shadid, Raymond S. Tuminaro, Roger P. Pawlowski, Luis Chacon, (2010). Approximate Block Factorization and Physics-based Preconditioning: Application to CFD and MHD Copper Mountain Conference on Iterative Methods https://www.osti.gov/search/identifier:1003974 Document ID: 5281395

Eric Christopher Cyr, John N. Shadid, Roger P. Pawlowski, Raymond S. Tuminaro, Luis Chacon, (2010). Block Preconditioners for Fluid Flow and MHD SIAM Parallel Processing https://www.osti.gov/search/identifier:1142042 Document ID: 5280025

Alton D. Romig, Raymond S. Tuminaro, Allen C. Robinson, Jonathan J. Hu, (2009). High Performance Parallel Multigrid for Large-Scale Electromagnetic Simulations SIAM CS&E conference https://www.osti.gov/search/identifier:1267112 Document ID: 5250046

John N. Shadid, Raymond S. Tuminaro, Gary L. Hennigan, Robert J. Hoekstra, Marzio Sala, (2008). Performance of a Parallel Algebraic Multilevel Preconditioner for Stabilized Finite Element Semiconductor Device ModelingStabilized Finite Element Semiconductor Device Modeling Journal of Computational Physics https://www.osti.gov/search/identifier:1142912 Document ID: 5264595

Christopher Siefert, Jonathan J. Hu, Raymond S. Tuminaro, Erik Gunnar Boman, Karen D. Devine, (2008). Partitioning for Multigrid Solvers Workshop on Combinatorial Scientific Computing & Petascale Simulation 2008 (CSCAPES) https://www.osti.gov/search/identifier:1143232 Document ID: 5262897

Christopher Siefert, Raymond S. Tuminaro, Pavel B. Bochev, Erik Gunnar Boman, Karen D. Devine, (2008). Recent Algorithmic (and Practical) Developments in ML 10th Copper Mountain Conference on Iterative Methods https://www.osti.gov/search/identifier:1145786 Document ID: 5260993

Christopher Siefert, Pavel B. Bochev, Jonathan J. Hu, Raymond S. Tuminaro, (2008). Performance and Scalability in Computational Electromagnetics at Sandia ANL / Leadership Computing Facility Seminar https://www.osti.gov/search/identifier:1713030 Document ID: 5259257

Christopher Siefert, Pavel B. Bochev, Raymond S. Tuminaro, Jonathan J. Hu, (2007). Algebraic Multigrid and a Compatible Gauge Reformulation of Maxwell’s Equations W&M Computer Science Seminar https://www.osti.gov/search/identifier:1146660 Document ID: 5257882

Christopher Siefert, Jonathan J. Hu, Raymond S. Tuminaro, (2007). What’s New in ML? New Features in Trilinos 8.0. Trilinos User Group Meeting https://www.osti.gov/search/identifier:1147372 Document ID: 5257265

Sandra Karen Begay, Raymond S. Tuminaro, Jonathan J. Hu, (2007). ML 3.1 Smoothed Aggregation User’s Guide https://www.osti.gov/search/identifier:974895 Document ID: 5226045

Sandra Karen Begay, Jonathan J. Hu, Raymond S. Tuminaro, (2007). ML 3.1 Developer’s Guide https://www.osti.gov/search/identifier:974885 Document ID: 5226050

Sandra Karen Begay, John N. Shadid, Raymond S. Tuminaro, (2007). An Improved Convergence Bound For Aggregation-Based Domain Decomposition Preconditioners SIAM Journal on Matrix Analysis and Applications https://www.osti.gov/search/identifier:972459 Document ID: 5233469

Paul Lin, John N. Shadid, Raymond S. Tuminaro, (2007). Algebraic Multilevel Preconditioners for non-symmetric PDEs on Stretched Grids 16th International Conference on Domain Decomposition Methods https://www.osti.gov/search/identifier:969878 Document ID: 5232879

John N. Shadid, Andrew G. Salinger, Roger P. Pawlowski, Paul Lin, Gary L. Hennigan, Raymond S. Tuminaro, Richard B. Lehoucq, (2007). Large-scale Stabilized FE Computational Analysis of Nonlinear Steady State Transport/Reaction SystemsSteady State Transport/Reaction Systems Computer Methods in Applied Mechanics and Engineering https://www.osti.gov/search/identifier:971834 Document ID: 5232490

Michael W Gee, Raymond S. Tuminaro, Kendall H. Pierson, (2007). Non-Linear Nearly Matrix Free Algebraic Multigrid for Solid MechanicsSolid Mechanics IASS/IACM internat. conference on computation of shells and spatial structures https://www.osti.gov/search/identifier:1021121 Document ID: 5232500

Paul Lin, Marzio Sala, John N. Shadid, Raymond S. Tuminaro, (2007). Performance of Multilevel Preconditioners for Incompressible Flow with Transport Sixth World Congress on Computational Mechanics https://www.osti.gov/search/identifier:957685 Document ID: 5225029

John N. Shadid, Raymond S. Tuminaro, Marzio Sala, (2007). A Smoother Aggregation Preconditioner for the Solution of Non-Symmetric Linear Systems The Third MIT Conference https://www.osti.gov/search/identifier:972890 Document ID: 5226051

Sandra Karen Begay, John N. Shadid, Raymond S. Tuminaro, (2007). Performance of Multilevel Preconditioners for Stabilized Finite Element Discretizations of Transport/Reaction Systems SIAM Conference on Computational Science & Engineering https://www.osti.gov/search/identifier:946958 Document ID: 5229771

Pavel B. Bochev, Raymond S. Tuminaro, Jonathan J. Hu, (2007). An algebraic multigrid approach based on a compatible gauge reformulation of Maxwell’s equations SIAM Journal on Scientific Computing https://www.osti.gov/search/identifier:908080 Document ID: 5250531

Sarah L Dickerson, John N. Shadid, Robert R Shuttleworth, Raymond S. Tuminaro, Howard Elman, (2007). A taxonomy and comparision of parallel block multi-level preconditioners for the incompressible Navier-Stokes equations https://www.osti.gov/search/identifier:920807 Document ID: 5251735

Alan P. Zelicoff, Raymond S. Tuminaro, Pavel B. Bochev, Christopher J. Garasi, Allen C. Robinson, (2007). Massively Parallel Magnetic Diffusion Computations: Highly Scalable Z-pinch Simulations https://www.osti.gov/search/identifier:920807 Document ID: 5229342

Jeremy Lieber Sprung, Ulrich Ladislas Lucien Hetmaniuk, Raymond S. Tuminaro, Peter Arbenz, (2007). A Comparison of Eigensolvers for Large-scale 3D Modal Analysis Using AMG-Preconditioners Iterative Methods Int. J. Num. Methods. Eng. https://www.osti.gov/search/identifier:990992 Document ID: 5228932

John N. Shadid, Andrew G. Salinger, Roger P. Pawlowski, Paul Lin, Gary L. Hennigan, Raymond S. Tuminaro, Richard B. Lehoucq, (2007). Large-scale Stabilized FE Computational Analysis of Nonlinear Steady State Transport/Reaction Systems Computational Methods in Applied Mechanics and Engineering https://www.osti.gov/search/identifier:915168 Document ID: 5228058

Sandra Karen Begay, John N. Shadid, Raymond S. Tuminaro, (2007). Performance of Fully-Coupled Algebraic Multilevel Domain Decomposition Preconditioners for Incompressible Flow and TransportPreconditioners for Incompressible Flow and Transport International Journal for Numerical Methods in Engineering https://www.osti.gov/search/identifier:915194 Document ID: 5228190

Sandra Karen Begay, John N. Shadid, Raymond S. Tuminaro, (2007). Performance of Multilevel Domain Decomposition Preconditioners for Finite Element Transport/Reaction Systems 16th International Conference on Domain Decomposition Methods https://www.osti.gov/search/identifier:945898 Document ID: 5228752

Christopher Siefert, Pavel B. Bochev, Jonathan J. Hu, Raymond S. Tuminaro, (2007). Algebraic Multigrid and Algebraic Reformulations of the Eddy Current Equations Computational Science and Engineering 2007 https://www.osti.gov/search/identifier:1143320 Document ID: 5249569

Howard Elman, David Silvester, Victoria E. Howle, John N. Shadid, Raymond S. Tuminaro, (2006). Least Squares Preconditioners for Stabilized Discretizations of the Navier-Stokes Equations SIAM Journal on Scientific Computing https://www.osti.gov/search/identifier:897133 Document ID: 5241542

Sarah L Dickerson, Robert R Shuttleworth, Raymond S. Tuminaro, (2006). Meros Trilinos User Group Meeting https://www.osti.gov/search/identifier:1264547 Document ID: 5247464

Christopher Siefert, Raymond S. Tuminaro, Jonathan J. Hu, (2006). What’s new in ML? New Features in Trilinos 7.0New Features in Trilinos 7.0 Trilinos User Group Meeting https://www.osti.gov/search/identifier:899085 Document ID: 5247461

John N. Shadid, Raymond S. Tuminaro, Marzio Sala, (2006). Performance of AMG-type preconditioners for fully-coupled solution of FE Transport/Reaction Simulations SIAM Conference on Computational Science and Engineering https://www.osti.gov/search/identifier:1264651 Document ID: 5245516

Marzio Sala, Raymond S. Tuminaro, John N. Shadid, Robert J. Hoekstra, Gary L. Hennigan, (2006). Copy of A Multilevel Preconditioner for FEM Modeling of Semiconductor Devices SIAM Annual Meeting https://www.osti.gov/search/identifier:893159 Document ID: 5244153

Michael W Gee, Raymond S. Tuminaro, (2006). Nonlinear algebraic multigrid for constrained solid mechanics problems using Trilinos https://www.osti.gov/search/identifier:883128 Document ID: 5241778

Sarah L Dickerson, Raymond S. Tuminaro, John N. Shadid, Howard C. Elman, (2005). Meros: Software for Block Preconditioning the Incompressible Navier-Stokes Equations 2004 SNL/CA Student Intern Symposium https://www.osti.gov/search/identifier:883128 Document ID: 5223944

John N. Shadid, Raymond S. Tuminaro, Karen D. Devine, Gary L. Hennigan, Paul Lin, (2004). Performance of fully-coupled domain decomposition preconditioners for finite element transport/reaction simulations Journal of Computational Physics https://www.osti.gov/search/identifier:876377 Document ID: 5222109

Sandra Karen Begay, Jonathan J. Hu, Raymond S. Tuminaro, (2004). ML 3.0 Smoothed Aggregation User’s Guide https://www.osti.gov/search/identifier:919154 Document ID: 5222396

Paul Lin, Marzio Sala, John N. Shadid, Raymond S. Tuminaro, (2004). Performance of a Geometric and an Algebraic Multilevel Preconditioner for Incompressible Flow with Transport Sixth World Congress on Computational Mechanics https://www.osti.gov/search/identifier:919154 Document ID: 5221836

Pavel B. Bochev, Raymond S. Tuminaro, Jonathan J. Hu, Allen C. Robinson, (2002). Computational Electromagnetics and Differential Complexes Colloquium at Federal Swiss Institute of Technology https://www.osti.gov/search/identifier:919154 Document ID: 4357900

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