Jonathan J. Hu

Scalable Algorithms

Scalable Algorithms

jhu@sandia.gov

(925) 294-2931

Sandia National Laboratories, California
P.O. Box 969
Livermore, CA 94551-0969

Biography

I am a Principal Member of the Technical Staff in the Scalable Algorithms Department at Sandia National Labs. My interests include scalable solution methods for linear systems, such as multigrid methods, preconditioning techniques for problems arising from uncertainty quantification, and solvers for advanced architectures. I am a developer of of the MueLu, ML, and Ifpack2 libraries in Sandia’s Trilinos project.

Education

  • Ph.D. , Mathematics, University of Kentucky
  • M.A., Mathematics, University of Kentucky
  • B.A., Lawrence University

Publications

Jonathan J. Hu, (2022). Recent Advances in Trilinos Solvers R&D NNSA/CEA meeting Document ID: 1539940

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

Michael A. Sprague, Michael Brazell, Nicholas Brunhart-Lupo, Paul Mullowney, Jon Rood, Ashesh Sharma, Stephen Thomas, Ganesh Vijayakumar, Paul Crozier, Luc Berger-Vergiat, Lawrence Cheung, Nathaniel deVelder, Jonathan J. Hu, Robert C. Knaus, Dong Hun Lee, Neil Matula, James R. Overfelt, Philip Sakievich, Timothy Andrew Smith, Alan B. Williams, Ichitaro Yamazaki, John A. Turner, Andrey Prokopenko, Robert Wilson, Robert Moser, Jeremy Melvin, (2022). ExaWind: Exascale Predictive Wind Plant Flow Physics Modeling ECP Annual Meeting (virtual) Document ID: 1506058

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

Jonathan J. Hu, Luc Berger-Vergiat, Ichitaro Yamazaki, (2022). Preparing Trilinos Solvers for Exascale Wind Farm Simulations SIAM Parallel Processing Document ID: 1470754

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

Paul Crozier, Christiane Adcock, Shreyas Ananthan, Luc Berger-Vergiat, Michael Brazell, Nicholas Brunhart-Lupo, Marc T. Henry de Frahan, Jonathan J. Hu, Robert C. Knaus, Jeremy Melvin, Bob Moser, Paul Mullowney, Jon Rood, Ashesh Sharma, Stephen Thomas, Ganesh Vijayakumar, Alan B. Williams, Robert Wilson, Ichitaro Yamazaki, Michael A. Sprague, (2021). Harnessing exascale for whole wind farm high-fidelity simulations to improve wind farm efficiency Sc21 Document ID: 1392367

Christiane Adcock, Shreyas Ananthan, Luc Berget-Vergiat, Michael Brazell, Nicholas Brunhart-Lupo, Jonathan J. Hu, Robert C. Knaus, Jeremy Melvin, Bob Moser, Paul Mullowney, Jon Rood, Ashesh Sharma, Stephen Thomas, Ganesh Vijayakumar, Alan B. Williams, Robert Wilson, Ichitaro Yamazaki, Michael Sprague, (2021). Demonstrate moving-grid multi-turbine simulations primarily run on GPUs and propose improvements for successful KPP-2 https://www.osti.gov/search/identifier:1855025 Document ID: 1369279

Christiane Adcock, Shreyas Ananthan, Luc Berger-Vergiat, Michael Brazell, Nicholas Brunhart-Lupo, Jonathan J. Hu, Robert C. Knaus, Jeremy Melvin, Bob Moser, Paul Mullowney, Jon Rood, Ashesh Sharma, Stephen Thomas, Ganesh Vijayakumar, Alan B. Williams, Robert Wilson, Ichitaro Yamazaki, Michael Sprague, (2021). FY21 Q4:Demonstrate moving-grid multi-turbine simulations primarily run on GPUs and propose improvements for successful KPP-2 https://www.osti.gov/search/identifier:1855023 Document ID: 1369280

Jonathan J. Hu, Christian Alexander Glusa, (2021). Recent Advances in Maxwell Solvers for PIC Simulations Across Architectures Platform for Advanced Scientific Computing (PASC) Conference (virtual event) Document ID: 1330682

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

Michael Sprague, Shreyas Ananthan, Roba Binyahib, Michael Brazell, Marc Henry de Frahan, Ryan A. King, Paul Mullowney, Jon Rood, Ashesh Sharma, Stephen A. Thomas, Ganesh Vijayakumar, Paul Crozier, Luc Berger-Vergiat, Lawrence Cheung, David Christopher Dement, Nathaniel deVelder, David Glaze, Jonathan J. Hu, Robert C. Knaus, Dong Hun Lee, Neil Matula, Tolulope O. Okusanya, James R. Overfelt, Sivasankaran Rajamanickam, Philip Sakievich, Timothy Andrew Smith, Johnathan Vo, Alan B. Williams, Ichitaro Yamazaki, William John Turner, Andrey Prokopenko, Robert V. Wilson, Robert Moser, Jeremy Melvin, Jay Sitaraman, (2021). ExaWind: Exascale Predictive Wind Plant Flow Physics Modeling Exascale Computing Project Annual Meeting https://www.osti.gov/search/identifier:1863503 Document ID: 1294080

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

Karen D. Devine, Geoffrey C Danielson, Timothy Jesse Fuller, Jonathan J. Hu, Brian Michael Kelley, Kyungjoo Kim, Christopher Siefert, Timothy Andrew Smith, (2021). Removal of the UVM Requirement from Tpetra: MultiVector and BlockMultiVector Tpetra training for stakeholders https://www.osti.gov/search/identifier:1854709 Document ID: 1280757

Luc Berger-Vergiat, Jonathan J. Hu, Christian Alexander Glusa, Christopher Siefert, (2021). Portability of Nalu-Wind using Trilinos and Kokkos Libraries Siam Cse https://www.osti.gov/search/identifier:1854321 Document ID: 1280430

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

Jonathan J. Hu, (2021). Performance Portability in Sandia Mission Applications and Kokkos Ecosystem Updates Jowog34-acs https://www.osti.gov/search/identifier:1847567 Document ID: 1269175

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

Sheryas Anathan, Alan B. Williams, James R. Overfelt, Johnathan Vo, Philip Sakievich, Timothy Andrew Smith, Jonathan J. Hu, Luc Berger-Vergiat, Paul Mullowney, Stephen Thomas, Marc T. Melvin Henry de Grahan, Robert Moser, Michael Brazell, Michael A. Sprague, (2020). Demonstration and performance testing of extreme-resolution simulations with static meshes on Summit (CPU & GPU) for a parked-turbine con figuration and an actuator-line (mid-fidelity model) wind farm con figuration https://www.osti.gov/search/identifier:1706223 Document ID: 1230872

Sheryas Anathan, Alan B. Williams, James R. Overfelt, Johnathan Vo, Philip Sakievich, Timothy Andrew Smith, Jonathan J. Hu, Luc Berger-Vergiat, Paul Mullowney, Stephen Thomas, Marc T. Melvin Henry de Grahan, Robert Moser, Michael Brazell, Michael A. Sprague, (2020). Demonstration and performance testing of extreme-resolution simulations with static meshes on Summit https://www.osti.gov/search/identifier:1706222 Document ID: 1230876

Jonathan J. Hu, Christian Alexander Glusa, (2020). One slide overviews of the Belos and MueLu Libraries in Trilinos Argonne Training Program on Extreme-Scale Computing https://www.osti.gov/search/identifier:1810699 Document ID: 1172766

Jonathan J. Hu, Luc Berger-Vergiat, Steve Thomas, Kasia Swirydowicz, Ichitaro Yamazaki, Paul Mullowney, Sivasankaran Rajamanickam, Jay Sitaraman, Michael Sprague, (2020). Compare linear-system solver and preconditioner stacks with emphasis on GPU performance and propose phase-2 NGP solver development pathway https://www.osti.gov/search/identifier:1630801 Document ID: 1128548

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

Jonathan J. Hu, Christian Alexander Glusa, Stan Gerald Moore, Paul Lin, Edward Geoffrey Phillips, Matthew Tyler Bettencourt, James John Elliott, Christopher Siefert, Sivasankaran Rajamanickam, (2020). Linear Solvers for Plasma Simulations on Advanced Architectures SIAM Parallel Processing https://www.osti.gov/search/identifier:1765804 Document ID: 1091938

Christopher Siefert, Karen D. Devine, Mark Frederick Hoemmen, Jonathan J. Hu, Brian Michael Kelley, (2020). State of the Tpetra Linear Solver Stack State of the Tpetra Linear Solver Stack https://www.osti.gov/search/identifier:1764665 Document ID: 1091365

M. Sprague, S. Ananthan, M. Brazell, A. Glaws, M. De Frahan, R. King, M. Natarajan, J. Rood, A. Sharma, K. Sirydowicz, Thomas S., G. Vijaykumar, S. Yellapantula, Paul Crozier, Luc Berger-Vergiat, Lawrence Cheung, David Glaze, Jonathan J. Hu, Robert C. Knaus, Dong Hun Lee, Tolulope O. Okusanya, James R. Overfelt, Sivasankaran Rajamanickam, Philip Sakievich, Timothy Andrew Smith, Johnathan Vo, Alan B. Williams, Ichitaro Yamazaki, J. Turner, A. Prokopenko, R. Wilson, R. Moser, J. Melvin, J Sitaraman, (2020). ExaWind: Exascale Predictive Wind Plant Flow Physics Modeling 2020 Exascale Computing Project Annual Meeting https://www.osti.gov/search/identifier:1764343 Document ID: 1090970

Luc Berger-Vergiat, Jonathan J. Hu, Sivasankaran Rajamanickam, Ichitaro Yamazaki, (2019). Trilinos linear solvers group update ExaWind quarterly meeting FY20-Q1 https://www.osti.gov/search/identifier:1646404 Document ID: 1067196

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

Shreyas Ananthan, Shashank Yellapantula, Jonathan J. Hu, Michael Lawon, Michael Sprague, Stephen J. Thomas, (2019). Comparison of classical and aggregation-based algebraic multigrid preconditioners for high-fidelity simulation of wind turbine incompressible flows SIAM Journal on Scientific Computing https://www.osti.gov/search/identifier:1574702 Document ID: 998727

Christian Alexander Glusa, Christian Alexander Glusa, Jonathan J. Hu, Jonathan J. Hu, (2019). Krylov Solvers and Algebraic Multigrid Argonne Training Program on Extreme-Scale Computing https://www.osti.gov/search/identifier:1645719 Document ID: 997688

Jonathan J. Hu, Christian Alexander Glusa, (2019). Overview of the Trilinos packages Belos and MueLu Argonne Training Program o Extreme-Scale Computing https://www.osti.gov/search/identifier:1645691 Document ID: 997345

Sivasankaran Rajamanickam, Ian Bogle, Jonathan J. Hu, Karen D. Devine, George M. Slota, Mauro Perego, Kyungjoo Kim, (2019). FASTMath: Kokkos Kernels and Linear Solvers SciDAC PI meeting https://www.osti.gov/search/identifier:1641222 Document ID: 986151

Sivasankaran Rajamanickam, Jonathan J. Hu, Ulrike Yang, (2019). Kokkos Kernels and Trilinos Solvers in FASTMath International Congress on Industrial and Applied Mathematics https://www.osti.gov/search/identifier:1641168 Document ID: 985828

Jonathan J. Hu, (2019). MueLu: A Portable High Performance C++ Multigrid Preconditioning Library International Conference on Industrial and Applied Mathematics (ICIAM 2019) https://www.osti.gov/search/identifier:1641150 Document ID: 985753

Luc Berger-Vergiat, Jonathan J. Hu, (2019). Trilinos Multigrid Solvers CEA/NNSA Annual Meeting https://www.osti.gov/search/identifier:1641018 Document ID: 984805

Luc Berger-Vergiat, Sivasankaran Rajamanickam, Jonathan J. Hu, Christopher Bernard Luchini, (2019). ExaWind Kokkos user group meeting https://www.osti.gov/search/identifier:1648772 Document ID: 960105

Shreyas Ananthan, Luigi Capone, Marc Henry de Frahan, Jonathan J. Hu, Jeremy Melvin, James R. Overfelt, Ashesh Sharma, Jay Sitaraman, Katarzyna Swirydowicz, Stephen Thomas, Ganesh Vijayakumar, Alan B. Williams, Shashank Yellapantula, Michael Sprague, (2019). Nalu-Wind and OpenFAST: A high-fidelity modeling and simulation environment for wind energy https://www.osti.gov/search/identifier:1762093 Document ID: 948225

Jonathan J. Hu, Christian Alexander Glusa, Paul Lin, Edward Geoffrey Phillips, James John Elliott, Christopher Siefert, Sivasankaran Rajamanickam, (2019). Large Scale Parallel Solution Methods for Electromagnetic Simulations SIAM Conference on Computational Science and Engineering https://www.osti.gov/search/identifier:1602925 Document ID: 925324

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

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

Jonathan J. Hu, Sivasankaran Rajamanickam, (2019). Trilinos Scalable Solvers and Kokkos Kernels 2019 Exascale Computing Project Annual Meeting https://www.osti.gov/search/identifier:1592284 Document ID: 902210

Michael Sprague, Shreyas Ananthan, Kenny Gruchalla, Michael Lawson, Jon Rood, K. Swirydowicz, Steve Thomas, Ganesh Vijayakumar, Paul Crozier, Clark R. Dohrmann, Jonathan J. Hu, Alan B. Williams, John Turner, A. Prokopenko, Robert Moser, J. Melvin, (2019). ExaWind: Exascale Predictive Wind Plant Flow Physics Modeling Exascale Computing Project Annual Meeting https://www.osti.gov/search/identifier:1591992 Document ID: 902181

Sivasankaran Rajamanickam, Jonathan J. Hu, Karen D. Devine, Michael Wolf, (2018). Trilinos Framework and Solvers ASC Meeting https://www.osti.gov/search/identifier:1575986 Document ID: 890079

Andrey Prokopenko, Stephen Thomas, Kasia Swirydowicz, Shreyas Ananthan, Jonathan J. Hu, Alan B. Williams, Michael Sprague, (2018). Deploy threading in Nalu solver stack https://www.osti.gov/search/identifier:1481562 Document ID: 888219

Matthew Tyler Bettencourt, Richard Michael Jack Kramer, Keith Cartwright, Edward Geoffrey Phillips, Curtis C. Ober, Roger P. Pawlowski, Matthew Scot Swan, Irina Kalashnikova Tezaur, Eric T. Phipps, Sidafa Conde, Eric Christopher Cyr, Craig D. Ulmer, Todd Henry Kordenbrock, Scott Larson Nicoll Levy, Gary J. Templet, Jonathan J. Hu, Paul Lin, Christian Alexander Glusa, Christopher Siefert, Micheal W. Glass, (2018). ASC ATDM Level 2 Milestone #6358: Assess Status of Next Generation Components and Physics Models in EMPIRE https://www.osti.gov/search/identifier:1493832 Document ID: 854521

Micheal W. Glass, Matthew Tyler Bettencourt, Matthew Scot Swan, Jonathan J. Hu, Curtis C. Ober, Craig D. Ulmer, (2018). ASC/ATDM FY18 L2 Milestone #6358, Final Review: Assess Status of Next Generation Components and Physics Models in EMPIRE FY18 ASC/ATDM L2 Milestone Review #6358 Document ID: 854522

Sivasankaran Rajamanickam, Mehmet Deveci, Kyungjoo Kim, Nathan David Ellingwood, Christian Robert Trott, Jonathan J. Hu, (2018). KokkosKernels Overview SIAM Annual Meeting https://www.osti.gov/search/identifier:1574269 Document ID: 830763

Luc Berger-Vergiat, Jonathan J. Hu, Christopher Siefert, (2018). On node parallel aggregation for AMG SIAM annual meeting https://www.osti.gov/search/identifier:1568997 Document ID: 830323

Andrey Prokopenko, Stephen Thomas, Kasia Swirydowicz, Shreyas Ananthan, Jonathan J. Hu, Alan B. Williams, Michael Sprague, (2018). Deploy threading in Nalu solver stack https://www.osti.gov/search/identifier:1460054 Document ID: 830017

Jonathan J. Hu, Stephen Thomas, Clark R. Dohrmann, Shreyas Ananthan, Stefan P. Domino, Alan B. Williams, Michael Sprague, (2018). Decrease time-to-solution through improved linear-system setup and solve https://www.osti.gov/search/identifier:1528847 Document ID: 809381

Jonathan J. Hu, (2018). Multigrid Solvers in Trilinos NNSA/CEA Workshop https://www.osti.gov/search/identifier:1524833 Document ID: 807922

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

Jonathan J. Hu, Stephen Thomas, Clark R. Dohrmann, Shreyas Ananthan, Stefan P. Domino, Alan B. Williams, Michael Sprague, (2018). Decrease time-to-solution through improved linear-system setup and solve https://www.osti.gov/search/identifier:1431236 Document ID: 783394

Stephen Thomas, Shreyas Ananthan, Shashank Yellapantula, Jonathan J. Hu, Michael A. Sprague, (2018). High-fidelity simulation of wind-turbine incompressible flows with classical and aggregation AMG preconditioners 15th Copper Mountain Conference on Iterative Methods https://www.osti.gov/search/identifier:1504323 Document ID: 783352

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

James John Elliott, Christopher Siefert, Jonathan J. Hu, (2018). Trilinos Performance on Knights Landing Programming Models and Co-Design (PMCD) Meeting https://www.osti.gov/search/identifier:1495773 Document ID: 760637

Jonathan J. Hu, (2018). ECP ALCC Quarterly Report (Oct-Dec 2017) https://www.osti.gov/search/identifier:1513455 Document ID: 739292

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

Marta D’Elia, Eric T. Phipps, Harold C. Edwards, Jonathan J. Hu, Sivasankaran Rajamanickam, (2017). Ensemble Grouping Strategies for Embedded Stochastic Collocation Methods Applied to Anisotropic Diffusion Problems SIAM/ASA Journal of Uncertainty Quantification https://www.osti.gov/search/identifier:1421620 Document ID: 659193

Paul Lin, John N. Shadid, Edward Geoffrey Phillips, Jonathan J. Hu, Eric Christopher Cyr, Roger P. Pawlowski, (2017). Towards Scalable AMG-based Preconditioners for MHD and Multifluid Plasma Simulations 14th U.S. National Congress on Computational Mechanics (USNCCM14) https://www.osti.gov/search/identifier:1513626 Document ID: 637301

Tobias Albert Wiesner, Jonathan J. Hu, John N. Shadid, (2017). Multigrid for multiphysics using the MueLu framework VII International Conference on Coupled Problems in Science and Engineering https://www.osti.gov/search/identifier:1458131 Document ID: 625187

Paul Lin, John N. Shadid, Edward Geoffrey Phillips, Jonathan J. Hu, Eric Christopher Cyr, Roger P. Pawlowski, Paul (LLNL) Tsuji, David (U of Texas) Sondak, (2017). Algorithmic aspects and performance of AMG-based preconditioning for an implicit FE VMS resistive MHD model VII International Conference on Coupled Problems in Science and Engineering (Coupled Problems 2017) https://www.osti.gov/search/identifier:1458094 Document ID: 625264

Christopher Siefert, Jonathan J. Hu, Nathan V. Roberts, (2017). Towards a More Algebraic hp-Multigrid 18th Copper Mountain Conference On Multigrid Methods https://www.osti.gov/search/identifier:1456438 Document ID: 611090

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

Jonathan J. Hu, Karen D. Devine, Mark Frederick Hoemmen, Paul Lin, Sivasankaran Rajamanickam, Nathan V. Roberts, Christopher Siefert, Christian Robert Trott, Andrey Prokopenko, (2017). Enabling Low Mach Fluid Simulations Using Trilinos SIAM CS&E https://www.osti.gov/search/identifier:1426612 Document ID: 600032

Paul Lin, John N. Shadid, Edward Geoffrey Phillips, Jonathan J. Hu, Eric Christopher Cyr, Roger P. Pawlowski, Andrey (ORNL) Prokopenko, Paul (LLNL) Tsuji, (2017). Performance of Scalable AMG-based Preconditioners for MHD and Multifluid Plasma Simulations Siam Cse https://www.osti.gov/search/identifier:1424884 Document ID: 599602

Paul Lin, John N. Shadid, Edward Geoffrey Phillips, Jonathan J. Hu, Eric Christopher Cyr, Roger P. Pawlowski, (2017). owards Scalable AMG-based Preconditioners for MHD and Multifluid Plasma Simulations 14th U.S. National Congress on Computational Mechanics (USNCCM14 Document ID: 589193

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

Paul Lin, John N. Shadid, Jonathan J. Hu, Roger P. Pawlowski, Eric Christopher Cyr, (2017). Performance of Fully-coupled Algebraic Multigrid Preconditioners for Large-scale VMS Resistive MHD Journal of Computational and Applied Mathematics https://www.osti.gov/search/identifier:1411594 Document ID: 566462

Paul Lin, John N. Shadid, Edward Geoffrey Phillips, Jonathan J. Hu, Paul Tsuji, Eric Christopher Cyr, Roger P. Pawlowski, David Sondak, (2016). Algorithmic aspects and performance of AMG-based preconditioning for implicit FE VMS resistive MHD model Coupled Problems 2017 Document ID: 553177

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

Sivasankaran Rajamanickam, Karen D. Devine, Jonathan J. Hu, Mark Frederick Hoemmen, (2016). Trilinos NGP Planning Trilinos User Group Meeting https://www.osti.gov/search/identifier:1406938 Document ID: 553133

Paul Lin, John N. Shadid, Edward Geoffrey Phillips, Jonathan J. Hu, Andrey V Prokopenko, Eric Christopher Cyr, Roger P. Pawlowski, (2016). Performance of scalable AMG-based preconditioners for MHD and multifluid plasma simulations SIAM Conference on Computational Science and Engineering (CSE17) Document ID: 529290

Jonathan J. Hu, Nathan David Ellingwood, S. Chen (ASU), M. Adepu (ASU), O. Mor (ASU), R. Simmons (ASU), A. Gel (ASU), H. Emady (ASU), Y. Jiao (ASU), C. Tong (LLNL), (2016). Performance and Capability Improvements Towards Industrial Grade Open-Source DEM Simulation Framework with Integrated and Easy-To-Use Uncertainty Quantification NETL Workshop on Multiphase Flow Science https://www.osti.gov/search/identifier:1529803 Document ID: 507550

Jonathan J. Hu, Christopher Siefert, (2016). Multigrid Methods for Systems Arising from High Order Discretizations SIAM Annual Meeting 2016 https://www.osti.gov/search/identifier:1372208 Document ID: 476580

Paul Lin, John N. Shadid, Jonathan J. Hu, Roger P. Pawlowski, Eric Christopher Cyr, Andrey V Prokopenko, (2016). Aspects of Large-scale Fully-coupled AMG Preconditioned FE Magnetohydrodynamic Simulations Enabled Through Trilinos world congress on compuational mechanics https://www.osti.gov/search/identifier:1372011 Document ID: 476179

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

Andrey V Prokopenko, Christopher Siefert, Jonathan J. Hu, Mark Frederick Hoemmen, Alicia Marie Klinvex, (2016). Ifpack2 User’s Guide 1.0 https://www.osti.gov/search/identifier:1259544 Document ID: 464173

Andrey V Prokopenko, Jonathan J. Hu, (2016). Speeding up multi-physics simulations through reuse of multigrid components Los Alamos Annual Postdoc Research Day https://www.osti.gov/search/identifier:1365381 Document ID: 442643

Marta D’Elia, Harold C. Edwards, Jonathan J. Hu, Eric T. Phipps, Sivasankaran Rajamanickam, (2016). Ensemble Grouping strategies for embedded Stochastic Collocation methods applied to anisotropic diffusion problems cole Polytechnique Fdrale de Lausanne https://www.osti.gov/search/identifier:1365180 Document ID: 430537

Paul Lin, John N. Shadid, Jonathan J. Hu, (2016). Performance of smoothers for algebraic multigrid preconditioners for finite element variational multiscale incompressible magnetohydrodynamics Siam Pp https://www.osti.gov/search/identifier:1365070 Document ID: 431189

Andrey V Prokopenko, Paul Lin, John N. Shadid, Jonathan J. Hu, (2016). Speeding up multi-physics simulations through reuse of multigrid components Copper Mountain Conference on Iterative Methods https://www.osti.gov/search/identifier:1364816 Document ID: 430398

Eric T. Phipps, Marta D’Elia, Harold C. Edwards, Mark Frederick Hoemmen, Jonathan J. Hu, Sivasankaran Rajamanickam, (2016). Embedded Ensemble Propagation for Improving Performance, Portability and Scalability of Uncertainty Quantification on Emerging Computational Architectures 14th Copper Mountain Conference on Iterative Methods https://www.osti.gov/search/identifier:1348104 Document ID: 430054

Jonathan J. Hu, (2016). Recent Progress in Trilinos Linear Solvers JOWOG34 ACS meeting https://www.osti.gov/search/identifier:1342989 Document ID: 397733

Paul Lin, John N. Shadid, Jonathan J. Hu, Roger P. Pawlowski, Eric Christopher Cyr, Andrey V Prokopenko, Paul Tsuji, (2016). Aspects of Large-scale Fully-coupled AMG Preconditioned FE Magnetohydrodynamic Simulations Enabled Through Trilinos World Congress on Computational Mechanics Document ID: 376318

Eric T. Phipps, Marta D’Elia, Harold C. Edwards, Mark Frederick Hoemmen, Jonathan J. Hu, Sivasankaran Rajamanickam, (2015). Embedded Ensemble Propagation For Improving Performance, Portability And Scalability Of Uncertainty Quantification On Emerging Computational Architectures SIAM Journal on Scientific Computing https://www.osti.gov/search/identifier:1369442 Document ID: 354431

Tobias Albert Wiesner, Jonathan J. Hu, Brian Kelley, Christopher Siefert, (2015). A new MATLAB interface to MueLu Trilinos user group meeting 2015 https://www.osti.gov/search/identifier:1331844 Document ID: 343372

Jonathan J. Hu, (2015). Linear and Eigen-Solver Capability Update 2015 Trilinos User Group Meeting https://www.osti.gov/search/identifier:1331926 Document ID: 353630

Jonathan J. Hu, Christopher Siefert, Pat Plunkett, Paul Atzberger, (2015). Spatially adaptive stochastic methods for fluid?structure interactions subject to thermal fluctuations in domains with complex geometries Journal of Computational Physics https://www.osti.gov/search/identifier:1226084 Document ID: 320486

Jonathan J. Hu, Andrey V Prokopenko, (2015). MueLu: Approaches to Next Generation Platforms FASTMath group project https://www.osti.gov/search/identifier:1327877 Document ID: 342349

Aytekin Gel, Jonathan J. Hu, ElMoustapha Ould-Ahmed-Vall, Alexander Kalinkin, (2015). Modernization and Optimization Of A Legacy Open Source CFD Code For High Performance Computing Architectures International Journal of Computation Fluid Dynamics https://www.osti.gov/search/identifier:1371469 Document ID: 341814

Christopher Siefert, Jonathan J. Hu, Travis C. Fisher, Stefan P. Domino, (2015). Implicit Solvers for Higher-Order Discretizations 7th Interational Conference on Numerical Methods for Multi-Material Flow (MULTIMAT 2015) https://www.osti.gov/search/identifier:1327223 Document ID: 320533

Jonathan J. Hu, Aytekin Gel, (2015). Modernizing A Legacy Open Source CFD Code By Leveraging Scalable Parallel Preconditioners And Linear Equation Solvers 27th International Conference on Parallel Computational Fluid Dynamics https://www.osti.gov/search/identifier:1263197 Document ID: 275801

Paul Lin, John N. Shadid, Jonathan J. Hu, Eric Christopher Cyr, Roger P. Pawlowski, Andrey V Prokopenko, (2015). Fully-coupled Algebraic Multigrid Preconditioning Performance for Finite Element Resistive Magnetohydrodynamics Coupled Problems 2015 https://www.osti.gov/search/identifier:1252928 Document ID: 265314

Grey Ballard, Jonathan J. Hu, Christopher Siefert, (2015). Reducing Communication Costs for Sparse Matrix Multiplication within Algebraic Multigrid https://www.osti.gov/search/identifier:1504845 Document ID: 264373

Paul Lin, John N. Shadid, Jonathan J. Hu, Eric Christopher Cyr, Roger P. Pawlowski, Andrey V Prokopenko, (2015). On the Performance of Fully-Coupled Algebraic Multigrid Preconditioning at Large-Scale: Application to FEM CFD/MHD 1st Pan-American Congress on Computational Mechanics (PANACM 2015) https://www.osti.gov/search/identifier:1249295 Document ID: 264606

Jonathan J. Hu, Andrey V Prokopenko, (2015). Strategies for Reducing Setup Costs in Algebraic Multigrid SIAM Conference on Computation Science and Engineering https://www.osti.gov/search/identifier:1244457 Document ID: 232908

Eric T. Phipps, Marta D’Elia, Jonathan J. Hu, Sivasankaran Rajamanickam, (2015). Exploring Embedded Uncertainty Quantification Methods on Next-Generation Computer Architectures 2015 SIAM Conference on Computational Science and Engineering https://www.osti.gov/search/identifier:1244446 Document ID: 232727

Paul Lin, John N. Shadid, Jonathan J. Hu, Eric Christopher Cyr, Roger P. Pawlowski, Andrey V Prokopenko, (2015). Performance of Algebraic Multigrid Preconditioners for Large-Scale Finite Element Simulations Siam Cse 2015 https://www.osti.gov/search/identifier:1244447 Document ID: 232789

Grey Ballard, Jonathan J. Hu, Christopher Siefert, (2015). Reducing Communication Costs for Sparse Matrix Multiplication within Algebraic Multigrid SIAM Conference on Scientific Computing and Engineering https://www.osti.gov/search/identifier:1246297 Document ID: 232723

Jonathan J. Hu, Andrey V Prokopenko, (2015). MueLu: Multigrid Framework for Advanced Architectures SIAM Conference on Computational Science and Engineering https://www.osti.gov/search/identifier:1246278 Document ID: 232548

Marta D’Elia, Eric T. Phipps, Harold C. Edwards, Jonathan J. Hu, Sivasankaran Rajamanickam, (2015). Embedded Sampling?Based Uncertainty Quantification Approaches for Emerging Computer Architectures 2015 SIAM Conference on Computational Science and Engineering https://www.osti.gov/search/identifier:1246872 Document ID: 232505

Jonathan J. Hu, Aytekin Gel, (2015). Modernizing a Legacy Open Source CFD Code by Leveraging Scalable Parallel Preconditioners and Linear Equation Solvers 27th International Conference on Parallel Computational Fluid Dynamics Document ID: 221797

Jonathan J. Hu, Christopher Siefert, Paul J. Atzberger, Pat Plunkett, (2015). Spatially Adaptive Stochastic Methods for Mesoscopic Fluid-Structure Interactions in Complex Geometries SIAM Conference on Computation Science and Engineering https://www.osti.gov/search/identifier:1241111 Document ID: 232130

Christopher Siefert, Jonathan J. Hu, John R. (Tech-X) Cary, Benjamin M. (Tech-X) Cowen, (2015). High-performance computational capability for conventional and laser-driven acceleration Scientific Discovery through Advanced Computing (SciDAC)High Energy Physics; LAB 15-1210 Document ID: 219835

Paul Lin, John N. Shadid, Jonathan J. Hu, Eric Christopher Cyr, Roger P. Pawlowski, Andrey V Prokopenko, (2014). On the Performance of Fully-Coupled Algebraic Multigrid Preconditioning at Large-Scale: Application to FEM CFD/MHD 1st Pan-American Congress on Computational Mechanics (PANACM 2015) Document ID: 207796

Jonathan J. Hu, (2014). Linear and Eigen-Solver Capability Area Trilinos User Group meeting https://www.osti.gov/search/identifier:1503795 Document ID: 207991

Jonathan J. Hu, Andrey V Prokopenko, (2014). MueLu: The Trilinos Multigrid Framework Trilinos User Group Meeting Document ID: 207720

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

Paul Lin, John N. Shadid, Jonathan J. Hu, Eric Christopher Cyr, Roger P. Pawlowski, (2014). Fully-coupled Algebraic Multigrid Preconditioning Performance for Finite Element Resistive Magnetohydrodynamics International Conference on Computational Methods for Coupled Problems in Science and Engineering Document ID: 176948

Jonathan J. Hu, Tobias A. Wiesner, Andrey V Prokopenko, Michael Gee, (2014). The MueLu Tutorial https://www.osti.gov/search/identifier:1172792 Document ID: 176748

Eric T. Phipps, Harold C. Edwards, Jonathan J. Hu, (2014). Improving Performance of Uncertainty Quantification Methods on Advanced Computing Architectures https://www.osti.gov/search/identifier:1241732 Document ID: 165969

Jonathan J. Hu, Andrey V Prokopenko, (2014). Trilinos/MueLu: Node-level Parallelism FASTMath Meeting on Strategies for Next Gen Architectures https://www.osti.gov/search/identifier:1241725 Document ID: 166246

Eric T. Phipps, Harold C. Edwards, Jonathan J. Hu, (2014). Exploring Heterogeneous Multicore Architectures for Advanced Embedded Uncertainty Quantification https://www.osti.gov/search/identifier:1433072 Document ID: 155215

Eric T. Phipps, Harold C. Edwards, Jonathan J. Hu, (2014). Uncertainty Quantification for Next-Generation Architectures Programming Models and Applications Workshop https://www.osti.gov/search/identifier:1497462 Document ID: 143570

Jonathan J. Hu, Eric T. Phipps, (2014). A Comparison of Algebraic Multigrid Preconditioning Approaches for Sampling-Based Uncertainty Propagation on Advanced Computing Architectures SIAM Annual Meeting 2014 https://www.osti.gov/search/identifier:1496090 Document ID: 112570

Paul Lin, John N. Shadid, Jonathan J. Hu, Eric Christopher Cyr, (2014). Towards Scalable Algebraic Multigrid Preconditioners for Magnetohydrodynamic Simulations Workshop on Modeling and Simulation of Transport Phenomena Document ID: 112268

Paul Lin, Matthew Tyler Bettencourt, Stefan P. Domino, Travis C. Fisher, Mark Frederick Hoemmen, Jonathan J. Hu, Eric T. Phipps, Andrey V Prokopenko, Sivasankaran Rajamanickam, Christopher Siefert, Kennon, Stephen Ray Kennon, (2014). Towards extreme-scale simulations for low-Mach fluids with second-generation Trilinos Parallel Processing Letters https://www.osti.gov/search/identifier:1182972 Document ID: 132818

Eric T. Phipps, Harold C. Edwards, Jonathan J. Hu, Clayton G Webster, (2014). Realizing Exascale Performance for Uncertainty Quantification SIAM Workshop on Exascale Applied Mathematics Challenges and Opportunities https://www.osti.gov/search/identifier:1496922 Document ID: 112386

Paul Lin, Matthew Tyler Bettencourt, Stefan P. Domino, Travis C. Fisher, Mark Frederick Hoemmen, Jonathan J. Hu, Eric T. Phipps, Andrey V Prokopenko, Sivasankaran Rajamanickam, Christopher Siefert, Eric Christopher Cyr, (2014). Towards Extreme-scale Simulations with Next-Generation Trilinos: a low Mach application case study 28th IEEE International Parallel & Distributed Processing Symposium https://www.osti.gov/search/identifier:1146105 Document ID: 5336611

Andrey V Prokopenko, Jonathan J. Hu, Sivasankaran Rajamanickam, (2014). Improving Parallel Performance of Coarse Grids in an Algebraic Multigrid 13th Copper Mountain Conference on Iterative Methods https://www.osti.gov/search/identifier:1141909 Document ID: 5334898

Andrey V Prokopenko, Jonathan J. Hu, Sivasankaran Rajamanickam, (2014). Reducing Coarse Grids Contention in a Parallel Algebraic Multigrid SIAM Conference on Parallel Processing for Scientific Computing https://www.osti.gov/search/identifier:1140543 Document ID: 5332995

Paul Lin, Matthew Tyler Bettencourt, Eric Christopher Cyr, Stefan P. Domino, Travis C. Fisher, Mark Frederick Hoemmen, Jonathan J. Hu, Eric T. Phipps, Andrey V Prokopenko, Sivasankaran Rajamanickam, Christopher Siefert, (2013). Enabling extreme-scale simulations with next-generation Trilinos for Sierra low Mach fluid application code IEEE International Parallel & Distributed Processing Symposium (IPDPS) https://www.osti.gov/search/identifier:1121283 Document ID: 5329442

Eric T. Phipps, Harold C. Edwards, Jonathan J. Hu, Jakob Ostien, (2013). Realizing Exascale Performance for Uncertainty Quantification DOE Workshop on Applied Mathematics Research for Exascale Computing https://www.osti.gov/search/identifier:1107525 Document ID: 5326584

Murat Okandan, Jonathan J. Hu, Andrey V Prokopenko, Christopher Siefert, Paul Hikaru Tsuji, Erik Gunnar Boman, Eric Christopher Cyr, Paul Lin, John N. Shadid, Michael Gee, Tobias Wiesner, Luke Olson, Jacob Schroder, David Keyes, Jeremie Gaidamour, Scott Maclachlan, Tom Benson, Steve Shank, Haim Waisman, Badri Hiriyur, Axel Gerstenberger, (2013). Amoritzing AMG Components Across Problem Sequences 2013 DOE Applied Mathematics PI Meeting https://www.osti.gov/search/identifier:1106439 Document ID: 5326013

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

Murat Okandan, Erik Gunnar Boman, Jonathan J. Hu, Andrey V Prokopenko, Christopher Siefert, Paul Hikaru Tsuji, Jeremie Gaidamour, Luke Olson, Jacob Schroder, Badri Hiriyur, David Keyes, Haim Waisman, (2013). Toward Flexible Scalable Algebraic Multigrid Solvers International Conference On Preconditioning Techniques For Scientific And Industrial Applications https://www.osti.gov/search/identifier:1083708 Document ID: 5323711

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

Eric T. Phipps, Harold C. Edwards, Jonathan J. Hu, Jakob Ostien, (2013). Exploring Emerging Manycore Architectures for Uncertainty Quantification Through Embedded Stochastic Galerkin Methods The Mathematics of Finite Elements and Applications 2013 https://www.osti.gov/search/identifier:1115474 Document ID: 5323032

Eric T. Phipps, Jonathan J. Hu, Harold C. Edwards, Clayton G. Webster, (2013). Realizing Exascale Performance for Uncertainty Quantification Workshop on Applied Mathematics Research for Exascale Computing https://www.osti.gov/search/identifier:1079546 Document ID: 5321885

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

Eric T. Phipps, Harold C. Edwards, Jonathan J. Hu, Jakob Ostien, (2013). Exploring Emerging Manycore Architectures for Uncertainty Quantification Through Embedded Stochastic Galerkin Methods International Journal of Computer Mathematics https://www.osti.gov/search/identifier:1063466 Document ID: 5317964

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

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

Eric T. Phipps, Harold C. Edwards, Jonathan J. Hu, (2012). Preliminary Investigations of Multi-Core Accelerated Embedded Uncertainty Quantification 12th Copper Mountain Conference on Iterative Methods https://www.osti.gov/search/identifier:1068443 Document ID: 5305967

Murat Okandan, Jonathan J. Hu, (2012). Energy Minimizing AMG for Problem Sequences: Adaptation to Applications and Advanced Architectures DOE/ASCR base program review https://www.osti.gov/search/identifier:1068433 Document ID: 5305767

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

Pavel B. Bochev, Jonathan J. Hu, Christopher Siefert, John N. Shadid, Paul Lin, Howard Elman, Michael Gee, Marzio Sala, Jacob Schroder, Bob Shuttleworth, (2011). Multigrid & Optimal Solvers GeoMath08 https://www.osti.gov/search/identifier:1141620 Document ID: 5265539

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

Murat Okandan, Jeremie Gaidamour, Axel Gerstenberger, Jonathan J. Hu, Christopher Siefert, Michael Gee, Tobias Wiesner, Badri Hiriyur, David Keyes, Haim Waisman, (2011). Leveraging Flexibility in Energy Minimization Algebraic Multigrid Seminar at Penn. State University https://www.osti.gov/search/identifier:1288862 Document ID: 5292307

Murat Okandan, Jonathan J. Hu, Jeremie Gaidamour, Christopher Siefert, Axel Gerstenberger, David Keyes, Haim Waisman, Luke Olson, Jacob Schroder, Badri Hiriyur, Michael Gee, Tobias Wiesner, (2010). A Flexible AMG Framework Centered on Energy Minimization IMA WorkshopNumerical Solution of Partial Differential EquationsSolution Techniques https://www.osti.gov/search/identifier:1035650 Document ID: 5289662

Murat Okandan, Christopher Siefert, Jonathan J. Hu, Jeremie Gaidamour, Luke Olson, Jacob Schroder, Haim Waisman, Badri Hiriyur, (2010). Toward Robust Scalable Algebraic Multigrid Solvers seminar at Columbia University https://www.osti.gov/search/identifier:1028459 Document ID: 5288055

Allen C. Robinson, Stewart John Mosso, Christopher Siefert, Jonathan J. Hu, Thomas Anthony Gardiner, Joseph Emmanuel Crepeau, (2009). Consequences for scalability arising from multi-material modelingmulti-material modeling Numerical methods for multi-material fluid flows https://www.osti.gov/search/identifier:1266907 Document ID: 5255492

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

Murat Okandan, Jonathan J. Hu, Eric Christopher Cyr, (2009). Energy Minimizing Algebraic Multigrid for Systems of Partial Differential Equations ASCR PI review https://www.osti.gov/search/identifier:1696844 Document ID: 5270352

Murat Okandan, Jonathan J. Hu, Christopher Siefert, (2009). Multilevel Project Presentation for DOE/ASCR visit to Sandia https://www.osti.gov/search/identifier:1698386 Document ID: 5268301

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, 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

Murat Okandan, Jonathan J. Hu, MIchael Gee, (2007). A New Smoothed Aggregation Multigrid Method for Anisotropic Problems Journal of Computational Physics https://www.osti.gov/search/identifier:1147337 Document ID: 5254679

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

Murat Okandan, Pavel B. Bochev, Christopher Siefert, Jonathan J. Hu, (2007). Algebraic Multigrid & Algebraic Reformulation of the Eddy Current Equation 6th International Congress on Industrial and Applied Mathematics https://www.osti.gov/search/identifier:974885 Document ID: 5253562

Murat Okandan, Jonathan J. Hu, Edmond Chow, Robert D. Falgout, Ulrike M. Yang, (2007). A Survey of Parallelization Techniques for Multigrid Solvers https://www.osti.gov/search/identifier:974885 Document ID: 5224799

Murat Okandan, Marzio Sala, Michael W Gee, Jonathan J. Hu, Haim Waisman, (2007). New Features in ML Trilinos Users Group Meeting https://www.osti.gov/search/identifier:974885 Document ID: 5227445

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

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

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

Murat Okandan, Pavel B. Bochev, Jonathan J. Hu, (2006). AMG and a Discrete Reformulation for Maxwell’s Equations CSRI Seminar https://www.osti.gov/search/identifier:1724653 Document ID: 5247052

Murat Okandan, Jonathan J. Hu, Christopher Siefert, Michael W. Gee, Marzio G. Sala, (2006). Generalizing Smoothed Aggregation on Algebraic Multigrid Workshop on High-Performance Computing https://www.osti.gov/search/identifier:1725736 Document ID: 5245436

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

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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