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 developing algorithms such as multigrid for the scalable solution of linear systems, solvers for advanced architectures, and creating portable scientific software for HPC systems. I am a developer of of the MueLu, Tpetra, 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

  • Bidadi, S., Brazell, M., Brunhart-Lupo, N., Henry de Frahan, M., Lee, D., Hu, J., Melvin, J., Mullowney, P., Vijayakumar, G., Moser, R., Rood, J., Sakievich, P., Sharma, A., Williams, A., Sprague, M., & Sprague, M. (2022). Demonstrate multi-turbine simulation with hybrid-structured / unstructured-moving-grid software stack running primarily on GPUs and propose improvements for successful KPP-2. https://doi.org/10.2172/1891592 Publication ID: 80344
  • Crozier, P.S., Adcock, C., Ananthan, S., Berger-Vergiat, L., Brazell, M., Brunhart-Lupo, N., Henry de Frahan, M., Hu, J., Knaus, R., Melvin, J., Moser, B., Mullowney, P., Rood, J., Sharma, A., Thomas, S., Vijayakumar, G., Williams, A., Wilson, R., Yamazaki, I., Sprague, M., & Sprague, M. (2021). Harnessing exascale for whole wind farm high-fidelity simulations to improve wind farm efficiency [Conference Presenation]. https://doi.org/10.2172/1897371 Publication ID: 76713
  • Adcock, C., Ananthan, S., Berger-Vergiat, L., Brazell, M., Brunhart-Lupo, N., Hu, J., Knaus, R., Melvin, J., Moser, B., Mullowney, P., Rood, J., Sharma, A., Thomas, S., Vijayakumar, G., Williams, A., Wilson, R., Yamazaki, I., Sprague, M., & Sprague, M. (2021). FY2021 Q4: Demonstrate moving-grid multi-turbine simulations primarily run on GPUs and propose improvements for successful KPP-2 [Slides]. https://doi.org/10.2172/1855023 Publication ID: 76109
  • Adcock, C., Ananthan, S., Berget-Vergiat, L., Brazell, M., Brunhart-Lupo, N., Hu, J., Knaus, R., Melvin, J., Moser, B., Mullowney, P., Rood, J., Sharma, A., Thomas, S., Vijayakumar, G., Williams, A., Wilson, R., Yamazaki, I., Sprague, M., & Sprague, M. (2021). Demonstrate moving-grid multi-turbine simulations primarily run on GPUs and propose improvements for successful KPP-2. https://doi.org/10.2172/1855025 Publication ID: 76110
  • Hu, J., Glusa, C., & Glusa, C. (2021). Recent Advances in Maxwell Solvers for PIC Simulations Across Architectures [Conference Presenation]. https://doi.org/10.2172/1888437 Publication ID: 79110
  • Ohm, P., Tuminaro, R., Hu, J., Shadid, J.N., Cyr, E., Wiesner, T., & Wiesner, T. (2021). An Algebraic Monolithic Method for Volume-coupled Multiphysics Problems [Conference Presenation]. https://doi.org/10.2172/1872519 Publication ID: 78786
  • Sprague, M., Ananthan, S., Binyahib, R., Brazell, M., de Frahan, M., King, R., Mullowney, P., Rood, J., Sharma, A., Thomas, S., Vijayakumar, G., Crozier, P.S., Berger-Vergiat, L., Cheung, L.C., Dement, D., Develder, N., Glaze, D., Hu, J., Knaus, R., … Sitaraman, &. (2021). ExaWind: Exascale Predictive Wind Plant Flow Physics Modeling [Conference Poster]. https://doi.org/10.2172/1863503 Publication ID: 78075
  • Ohm, P., Tuminaro, R., Shadid, J.N., Hu, J., Wiesner, T., & Wiesner, T. (2021). An Algebraic Monolithic Method for Volume-coupled Multiphysics Problems [Conference Presenation]. https://doi.org/10.2172/1854312 Publication ID: 77446
  • Berger-Vergiat, L., Hu, J., Glusa, C., Siefert, C., & Siefert, C. (2021). Portability of Nalu-Wind using Trilinos and Kokkos Libraries [Conference Presenation]. https://doi.org/10.2172/1854321 Publication ID: 77462
  • Devine, K., Danielson, G., Fuller, T., Hu, J., Kelley, B., Kim, K., Siefert, C., Smith, T., & Smith, T. (2021). Removal of the UVM Requirement from Tpetra: MultiVector and BlockMultiVector [Presentation]. https://www.osti.gov/biblio/1854709 Publication ID: 77532
  • Ohm, P., Tuminaro, R., Shadid, J.N., Hu, J., Wiesner, T., Cyr, E., & Cyr, E. (2021). A Monolithic Algebraic Multigrid Approach for Coupled Multiphysics Problems using the MueLu Framework [Conference Presenation]. https://doi.org/10.2172/1861027 Publication ID: 77864
  • Hu, J. (2021). Performance Portability in Sandia Mission Applications and Kokkos Ecosystem Updates [Conference Presenation]. https://doi.org/10.2172/1847567 Publication ID: 77270
  • Hu, J., Glusa, C., & Glusa, C. (2020). One slide overviews of the Belos and MueLu Libraries in Trilinos [Presentation]. https://www.osti.gov/biblio/1810699 Publication ID: 74210
  • Siefert, C., Devine, K., Hoemmen, M., Hu, J., Kelley, B., & Kelley, B. (2020). State of the Tpetra Linear Solver Stack [Conference Poster]. https://www.osti.gov/biblio/1764665 Publication ID: 72400
  • Hu, J., Glusa, C., Moore, S., Lin, P., Phillips, E., Bettencourt, M.T., Elliott, J., Siefert, C., Rajamanickam, S., & Rajamanickam, S. (2020). Linear Solvers for Plasma Simulations on Advanced Architectures [Conference Poster]. https://www.osti.gov/biblio/1765804 Publication ID: 72530
  • Berger-Vergiat, L., Hu, J., Tuminaro, R., Siefert, C., Glusa, C., & Glusa, C. (2020). MueLu’s Algorithmic Performance on GPU [Conference Poster]. https://www.osti.gov/biblio/1766725 Publication ID: 72589
  • Sprague, M., Ananthan, S., Brazell, M., Glaws, A., De Frahan, M., King, R., Natarajan, M., Rood, J., Sharma, A., Sirydowicz, K., S., T., Vijaykumar, G., Yellapantula, S., Crozier, P.S., Berger-Vergiat, L., Cheung, L.C., Glaze, D., Hu, J., Knaus, R., … Sitaraman, J. (2020). ExaWind: Exascale Predictive Wind Plant Flow Physics Modeling [Conference Poster]. https://www.osti.gov/biblio/1764343 Publication ID: 71726
  • Berger-Vergiat, L., Hu, J., Rajamanickam, S., Yamazaki, I., & Yamazaki, I. (2019). Trilinos linear solvers group update [Presentation]. https://www.osti.gov/biblio/1646404 Publication ID: 66617
  • Glusa, C., Glusa, C., Hu, J., Hu, J., & Hu, J. (2019). Krylov Solvers and Algebraic Multigrid [Presentation]. https://www.osti.gov/biblio/1645719 Publication ID: 70301
  • Tuminaro, R., Shadid, J.N., Cyr, E., Lin, P., Pawlowski, R., Phillips, E., Wiesner, T., Adler, J., Benson, T., Chacon, L., Farrell, P., Rappaport, A., MacLachlan, S., Hu, J., Berger-Vergiat, L., Glusa, C., Siefert, C., & Siefert, C. (2019). Scalable Preconditioners to Improve Time to Solution for Magnetohydrodynamics Applications [Presentation]. https://www.osti.gov/biblio/1645823 Publication ID: 70609
  • Hu, J. (2019). MueLu: A Portable High Performance C++ Multigrid Preconditioning Library [Conference Poster]. https://www.osti.gov/biblio/1641150 Publication ID: 69708
  • Rajamanickam, S., Hu, J., Yang, U., & Yang, U. (2019). Kokkos Kernels and Trilinos Solvers in FASTMath [Conference Poster]. https://www.osti.gov/biblio/1641168 Publication ID: 69763
  • Rajamanickam, S., Bogle, I., Hu, J., Devine, K., Slota, G., Perego, M., Kim, K., & Kim, K. (2019). FASTMath: Kokkos Kernels and Linear Solvers [Conference Poster]. https://www.osti.gov/biblio/1641222 Publication ID: 69817
  • Hu, J., Glusa, C., & Glusa, C. (2019). Overview of the Trilinos packages Belos and MueLu [Presentation]. https://www.osti.gov/biblio/1645691 Publication ID: 70195
  • Berger-Vergiat, L., Hu, J., & Hu, J. (2019). Trilinos Multigrid Solvers [Conference Poster]. https://www.osti.gov/biblio/1641018 Publication ID: 69508
  • Berger-Vergiat, L., Rajamanickam, S., Hu, J., Luchini, C., & Luchini, C. (2019). ExaWind [Presentation]. https://www.osti.gov/biblio/1648772 Publication ID: 68264
  • Berger-Vergiat, L., Tuminaro, R., Hu, J., Siefert, C., & Siefert, C. (2019). A multigrid approach to solve hypersonic flow problems [Conference Poster]. https://www.osti.gov/biblio/1602113 Publication ID: 67099
  • Hu, J., Glusa, C., Lin, P., Phillips, E., Elliott, J., Siefert, C., Rajamanickam, S., & Rajamanickam, S. (2019). Large Scale Parallel Solution Methods for Electromagnetic Simulations [Conference Poster]. https://www.osti.gov/biblio/1602925 Publication ID: 67190
  • Sprague, M., Ananthan, S., Gruchalla, K., lawson, M., Rood, J., Swirydowicz, K., Thomas, S., Vijayakumar, G., Crozier, P.S., Dohrmann, C., Hu, J., Williams, A., Turner, J., Prokopenko, A., Moser, R., Melvin, J., & Melvin, J. (2019). ExaWind: Exascale Predictive Wind Plant Flow Physics Modeling [Conference Poster]. https://www.osti.gov/biblio/1591992 Publication ID: 64239
  • Hu, J., Rajamanickam, S., & Rajamanickam, S. (2019). Trilinos Scalable Solvers and Kokkos Kernels [Conference Poster]. https://www.osti.gov/biblio/1592284 Publication ID: 64303
  • Berger-Vergiat, L., Glusa, C., Hu, J., Siefert, C., Tuminaro, R., Matthias, M., Andrey, P., Tobias, W., & Tobias, W. (2019). MueLu User’s Guide. https://doi.org/10.2172/1491860 Publication ID: 64392
  • Tuminaro, R., Hu, J., Siefert, C., Berger-Vergiat, L., Mayr, M., & Mayr, M. (2019). Non-invasive Semi-Structured Multigrid on Advanced Architectures [Conference Poster]. https://www.osti.gov/biblio/1595907 Publication ID: 64466
  • Tuminaro, R., Berger-Vergiat, L., Hu, J., Siefert, C., Mayr, M., & Mayr, M. (2019). Non-invasive Semi-Structured Multigrid on Advanced Architectures [Conference Poster]. https://www.osti.gov/biblio/1595908 Publication ID: 64467
  • Rajamanickam, S., Hu, J., Devine, K., Wolf, M., & Wolf, M. (2018). Trilinos Framework and Solvers [Presentation]. https://www.osti.gov/biblio/1575986 Publication ID: 60317
  • Prokopenko, A., Thomas, S., Swirydowicz, K., Ananthan, S., Hu, J., Williams, A., Sprague, M., & Sprague, M. (2018). Deploy threading in Nalu solver stack. https://doi.org/10.2172/1481562 Publication ID: 59815
  • Bettencourt, M.T., Kramer, R., Cartwright, K., Phillips, E., Ober, C., Pawlowski, R., Swan, M., Tezaur, I., Phipps, E., Conde, S., Cyr, E., Ulmer, C., Kordenbrock, T., Levy, S., Templet, G., Hu, J., Lin, P., Glusa, C., Siefert, C., Glass, M., & Glass, M. (2018). ASC ATDM Level 2 Milestone #6358: Assess Status of Next Generation Components and Physics Models in EMPIRE. https://doi.org/10.2172/1493832 Publication ID: 58868
  • Prokopenko, A., Thomas, S., Swirydowicz, K., Ananthan, S., Hu, J., Williams, A., Sprague, M., & Sprague, M. (2018). Deploy threading in Nalu solver stack. https://doi.org/10.2172/1460054 Publication ID: 62968
  • Berger-Vergiat, L., Hu, J., Siefert, C., & Siefert, C. (2018). On node parallel aggregation for AMG [Conference Poster]. https://www.osti.gov/biblio/1568997 Publication ID: 63005
  • Rajamanickam, S., Deveci, M., Kim, K., Ellingwood, N., Trott, C.R., Hu, J., & Hu, J. (2018). KokkosKernels Overview [Conference Poster]. https://www.osti.gov/biblio/1574269 Publication ID: 63474
  • Hu, J., Thomas, S., Dohrmann, C., Ananthan, S., Domino, S., Williams, A., Sprague, M., & Sprague, M. (2018). Decrease time-to-solution through improved linear-system setup and solve. https://doi.org/10.2172/1458348 Publication ID: 62771
  • Hu, J. (2018). Multigrid Solvers in Trilinos [Presentation]. https://www.osti.gov/biblio/1524833 Publication ID: 62345
  • Hu, J., Berger-Vergiat, L., Tuminaro, R., & Tuminaro, R. (2018). Solvers for Hypersonic Flow Applications [Conference Poster]. https://www.osti.gov/biblio/1806942 Publication ID: 61558
  • Thomas, S., Ananthan, S., Yellapantula, S., Hu, J., Sprague, M., & Sprague, M. (2018). High-fidelity simulation of wind-turbine incompressible flows with classical and aggregation AMG preconditioners [Conference Poster]. https://www.osti.gov/biblio/1504323 Publication ID: 61301
  • Hu, J., Thomas, S., Dohrmann, C., Ananthan, S., Domino, S., Williams, A., Sprague, M., & Sprague, M. (2018). Decrease time-to-solution through improved linear-system setup and solve. https://doi.org/10.2172/1431236 Publication ID: 61353
  • Elliott, J., Siefert, C., Hu, J., & Hu, J. (2018). Trilinos Performance on Knights Landing [Conference Poster]. https://www.osti.gov/biblio/1495773 Publication ID: 60598
  • Tuminaro, R., Hu, J., Siefert, C., Berger-Vergiat, L., Mayr, M., & Mayr, M. (2018). Leveraging Problem Structure within Multilevel Solvers to Improve Robustness & Performance on Advanced Architectures [Presentation]. https://www.osti.gov/biblio/1497567 Publication ID: 60831
  • D’Elia, M., Phipps, E., Edwards, H., Hu, J., Rajamanickam, S., & Rajamanickam, S. (2018). Ensemble Grouping Strategies for Embedded Stochastic Collocation Methods Applied to Anisotropic Diffusion Problems. SIAM/ASA Journal on Uncertainty Quantification, 6(1), pp. 87-117. https://doi.org/10.1137/16m1066324 Publication ID: 58096
  • Hu, J. (2018). ECP ALCC Quarterly Report (Oct-Dec 2017). https://doi.org/10.2172/1513455 Publication ID: 58665
  • Lin, P., Shadid, J.N., Phillips, E., Hu, J., Cyr, E., Pawlowski, R., & Pawlowski, R. (2017). Towards Scalable AMG-based Preconditioners for MHD and Multifluid Plasma Simulations [Conference Poster]. https://www.osti.gov/biblio/1513626 Publication ID: 57132
  • Lin, P., Shadid, J.N., Phillips, E., Hu, J., Cyr, E., Pawlowski, R., Tsuji, P., Sondak, D., & Sondak, D. (2017). Algorithmic aspects and performance of AMG-based preconditioning for an implicit FE VMS resistive MHD model [Conference Poster]. https://www.osti.gov/biblio/1458094 Publication ID: 56598
  • Wiesner, T., Hu, J., Shadid, J.N., & Shadid, J.N. (2017). Multigrid for multiphysics using the MueLu framework [Conference Poster]. https://www.osti.gov/biblio/1458131 Publication ID: 56643
  • Siefert, C., Hu, J., Roberts, N.V., & Roberts, N.V. (2017). Towards a More Algebraic hp-Multigrid [Conference Poster]. https://www.osti.gov/biblio/1456438 Publication ID: 55665
  • Hu, J., Devine, K., Hoemmen, M., Lin, P., Rajamanickam, S., Roberts, N.V., Siefert, C., Trott, C.R., Prokopenko, A., & Prokopenko, A. (2017). Enabling Low Mach Fluid Simulations Using Trilinos [Conference Poster]. https://www.osti.gov/biblio/1426612 Publication ID: 55317
  • Wiesner, T., Shadid, J.N., Cyr, E., Hu, J., Tuminaro, R., & Tuminaro, R. (2017). MueLu – a multigrid framework for multiphysics preconditioners [Conference Poster]. https://www.osti.gov/biblio/1456404 Publication ID: 55598
  • Gel, A., Hu, J., Ould-Ahmed-Vall, E., Kalinkin, A.A., & Kalinkin, A.A. (2017). Modernization and optimization of a legacy open-source CFD code for high-performance computing architectures. International Journal of Computational Fluid Dynamics, 31(2), pp. 122-133. https://doi.org/10.1080/10618562.2017.1285398 Publication ID: 45669
  • Wiesner, T., Tuminaro, R., Cyr, E., Shadid, J.N., Hu, J., & Hu, J. (2017). Multiphysics Preconditioning with the MueLu Multigrid Library [Conference Poster]. https://www.osti.gov/biblio/1458245 Publication ID: 54996
  • Lin, P., Shadid, J.N., Phillips, E., Hu, J., Cyr, E., Pawlowski, R., Prokopenko, A., Tsuji, P., & Tsuji, P. (2017). Performance of Scalable AMG-based Preconditioners for MHD and Multifluid Plasma Simulations [Conference Poster]. https://www.osti.gov/biblio/1424884 Publication ID: 55148
  • Rajamanickam, S., Devine, K., Hu, J., Hoemmen, M., & Hoemmen, M. (2016). Trilinos NGP Planning [Presentation]. https://www.osti.gov/biblio/1406938 Publication ID: 47465
  • Tuminaro, R., Cyr, E., Shadid, J.N., Noble, D., Berger-Vergiat, L., Hu, J., Prokopenko, A., Siefert, C., Wiesner, T., Perego, M., Salinger, A., Tezaur, I., Price, S., & Price, S. (2016). Toward Robust Scalable Algebraic Multigrid Solvers [Presentation]. https://www.osti.gov/biblio/1406967 Publication ID: 47500
  • Hu, J., Ellingwood, N., Chen, S., Adepu, M., Mor, O., Simmons, R., Gel, A., Emady, H., Jiao, Y., Tong, C., & Tong, C. (2016). Performance and Capability Improvements Towards Industrial Grade Open-Source DEM Simulation Framework with Integrated and Easy-To-Use Uncertainty Quantification [Conference Poster]. https://www.osti.gov/biblio/1529803 Publication ID: 51555
  • Lin, P., Shadid, J.N., Hu, J., Pawlowski, R., Cyr, E., Prokopenko, A., & Prokopenko, A. (2016). Aspects of Large-scale Fully-coupled AMG Preconditioned FE Magnetohydrodynamic Simulations Enabled Through Trilinos [Conference Poster]. https://www.osti.gov/biblio/1372011 Publication ID: 51033
  • Hu, J., Siefert, C., & Siefert, C. (2016). Multigrid Methods for Systems Arising from High Order Discretizations [Conference Poster]. https://www.osti.gov/biblio/1372208 Publication ID: 51131
  • Wiesner, T., Shadid, J.N., Cyr, E., Tuminaro, R., Hu, J., & Hu, J. (2016). Multigrid framework for multiphysics problems [Conference Poster]. https://www.osti.gov/biblio/1368650 Publication ID: 50605
  • Prokopenko, A., Siefert, C., Hu, J., Hoemmen, M., Klinvex, A., & Klinvex, A. (2016). Ifpack2 User’s Guide 1.0. https://doi.org/10.2172/1259544 Publication ID: 50418
  • Lin, P., Shadid, J.N., Hu, J., & Hu, J. (2016). Performance of smoothers for algebraic multigrid preconditioners for finite element variational multiscale incompressible magnetohydrodynamics [Conference Poster]. https://www.osti.gov/biblio/1365070 Publication ID: 49307
  • Prokopenko, A., Hu, J., & Hu, J. (2016). Speeding up multi-physics simulations through reuse of multigrid components [Presentation]. https://www.osti.gov/biblio/1365381 Publication ID: 49752
  • Phipps, E., D’Elia, M., Edwards, H., Hoemmen, M., Hu, J., Rajamanickam, S., & Rajamanickam, S. (2016). Embedded Ensemble Propagation for Improving Performance Portability and Scalability of Uncertainty Quantification on Emerging Computational Architectures [Conference Poster]. https://www.osti.gov/biblio/1348104 Publication ID: 48988
  • Prokopenko, A., Lin, P., Shadid, J.N., Hu, J., & Hu, J. (2016). Speeding up multi-physics simulations through reuse of multigrid components [Conference Poster]. https://www.osti.gov/biblio/1364816 Publication ID: 49027
  • Hu, J. (2016). Recent Progress in Trilinos Linear Solvers [Presentation]. https://www.osti.gov/biblio/1342989 Publication ID: 46958
  • Ballard, G., Siefert, C., Hu, J., & Hu, J. (2016). Reducing communication costs for sparse matrix multiplication within algebraic multigrid [Conference Poster]. SIAM Journal on Scientific Computing. https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84976884449&origin=inward Publication ID: 42503
  • Wiesner, T., Hu, J., Kelley, B., Siefert, C., & Siefert, C. (2015). A new MATLAB interface to MueLu [Presentation]. https://www.osti.gov/biblio/1331844 Publication ID: 46315
  • Hu, J. (2015). Linear and Eigen-Solver Capability Update [Presentation]. https://www.osti.gov/biblio/1331926 Publication ID: 46322
  • Hu, J., Prokopenko, A., & Prokopenko, A. (2015). MueLu: Approaches to Next Generation Platforms [Presentation]. https://www.osti.gov/biblio/1327877 Publication ID: 45779
  • Siefert, C., Hu, J., Fisher, T., Domino, S., & Domino, S. (2015). Implicit Solvers for Higher-Order Discretizations [Conference Poster]. https://www.osti.gov/biblio/1327223 Publication ID: 45255
  • Hu, J., Gel, A., & Gel, A. (2015). Modernizing A Legacy Open Source CFD Code By Leveraging Scalable Parallel Preconditioners And Linear Equation Solvers [Conference Poster]. https://www.osti.gov/biblio/1263197 Publication ID: 44066
  • Lin, P., Shadid, J.N., Hu, J., Cyr, E., Pawlowski, R., Prokopenko, A., & Prokopenko, A. (2015). Fully-coupled Algebraic Multigrid Preconditioning Performance for Finite Element Resistive Magnetohydrodynamics [Conference Poster]. https://www.osti.gov/biblio/1252928 Publication ID: 43365
  • Lin, P., Shadid, J.N., Hu, J., Cyr, E., Pawlowski, R., Prokopenko, A., & Prokopenko, A. (2015). On the Performance of Fully-Coupled Algebraic Multigrid Preconditioning at Large-Scale: Application to FEM CFD/MHD [Conference Poster]. https://www.osti.gov/biblio/1249295 Publication ID: 43165
  • Hu, J., Siefert, C., Atzberger, P., Plunkett, P., & Plunkett, P. (2015). Spatially Adaptive Stochastic Methods for Mesoscopic Fluid-Structure Interactions in Complex Geometries [Conference Poster]. https://www.osti.gov/biblio/1241111 Publication ID: 42350
  • D’Elia, M., Phipps, E., Edwards, H., Hu, J., Rajamanickam, S., & Rajamanickam, S. (2015). Embedded Sampling?Based Uncertainty Quantification Approaches for Emerging Computer Architectures [Conference Poster]. https://www.osti.gov/biblio/1246872 Publication ID: 42458
  • Hu, J., Prokopenko, A., & Prokopenko, A. (2015). MueLu: Multigrid Framework for Advanced Architectures [Conference Poster]. https://www.osti.gov/biblio/1246278 Publication ID: 42479
  • Phipps, E., D’Elia, M., Hu, J., Rajamanickam, S., & Rajamanickam, S. (2015). Exploring Embedded Uncertainty Quantification Methods on Next-Generation Computer Architectures [Conference Poster]. https://www.osti.gov/biblio/1244446 Publication ID: 42592
  • Lin, P., Shadid, J.N., Hu, J., Cyr, E., Pawlowski, R., Prokopenko, A., & Prokopenko, A. (2015). Performance of Algebraic Multigrid Preconditioners for Large-Scale Finite Element Simulations [Conference Poster]. https://www.osti.gov/biblio/1244447 Publication ID: 42593
  • Hu, J., Prokopenko, A., & Prokopenko, A. (2015). Strategies for Reducing Setup Costs in Algebraic Multigrid [Conference Poster]. https://www.osti.gov/biblio/1244457 Publication ID: 42610
  • Lin, P., Bettencourt, M.T., Domino, S., Fisher, T., Hoemmen, M., Hu, J., Phipps, E., Prokopenko, A., Rajamanickam, S., Siefert, C., Kennon, S., & Kennon, S. (2014). Towards extreme-scale simulations for low mach fluids with second-generation trilinos. Parallel Processing Letters, 24(4). https://doi.org/10.1142/S0129626414420055 Publication ID: 37671
  • Plunkett, P., Hu, J., Siefert, C., Atzberger, P.J., & Atzberger, P.J. (2014). Spatially adaptive stochastic methods for fluid-structure interactions subject to thermal fluctuations in domains with complex geometries. Journal of Computational Physics, 277, pp. 121-137. https://doi.org/10.1016/j.jcp.2014.07.051 Publication ID: 46323
  • Hu, J. (2014). Linear and Eigen-Solver Capability Area [Presentation]. https://www.osti.gov/biblio/1503795 Publication ID: 39374
  • Phipps, E., Edwards, H., Hu, J., & Hu, J. (2014). Improving Performance of Uncertainty Quantification Methods on Advanced Computing Architectures [Presentation]. https://www.osti.gov/biblio/1241732 Publication ID: 38843
  • Hu, J., Wiesner, T., Prokopenko, A., Gee, M., & Gee, M. (2014). The MueLu Tutorial. https://doi.org/10.2172/1172792 Publication ID: 39008
  • Hu, J., Prokopenko, A., Wiesner, T., Siefert, C., Tuminaro, R., & Tuminaro, R. (2014). MueLu User’s Guid for Trilinos Version 11.12. https://doi.org/10.2172/1160320 Publication ID: 39120
  • Phipps, E., Edwards, H., Hu, J., & Hu, J. (2014). Exploring Heterogeneous Multicore Architectures for Advanced Embedded Uncertainty Quantification. https://doi.org/10.2172/1433072 Publication ID: 38631
  • Hu, J., Prokopenko, A., & Prokopenko, A. (2014). Trilinos/MueLu: Node-level Parallelism [Presentation]. https://www.osti.gov/biblio/1241725 Publication ID: 38807
  • Phipps, E., Edwards, H., Hu, J., Webster, C., & Webster, C. (2014). Realizing Exascale Performance for Uncertainty Quantification [Presentation]. https://www.osti.gov/biblio/1496922 Publication ID: 37571
  • Hu, J., Phipps, E., & Phipps, E. (2014). A Comparison of Algebraic Multigrid Preconditioning Approaches for Sampling-Based Uncertainty Propagation on Advanced Computing Architectures [Presentation]. https://www.osti.gov/biblio/1496090 Publication ID: 37689
  • Phipps, E., Edwards, H., Hu, J., & Hu, J. (2014). Uncertainty Quantification for Next-Generation Architectures [Presentation]. https://www.osti.gov/biblio/1497462 Publication ID: 37961
  • Lin, P., Siefert, C., Cyr, E., Bettencourt, M.T., Domino, S., Fisher, T., Hoemmen, M., Hu, J., Phipps, E., Prokopenko, A., Rajamanickam, S., & Rajamanickam, S. (2014). Towards Extreme-scale Simulations with Next-Generation Trilinos: a low Mach application case study [Conference]. https://doi.org/10.1109/IPDPSW.2014.166 Publication ID: 40873
  • Prokopenko, A., Hu, J., Rajamanickam, S., & Rajamanickam, S. (2014). Improving Parallel Performance of Coarse Grids in an Algebraic Multigrid [Conference]. https://www.osti.gov/biblio/1141909 Publication ID: 40356
  • Prokopenko, A., Hu, J., Rajamanickam, S., & Rajamanickam, S. (2014). Reducing Coarse Grids Contention in a Parallel Algebraic Multigrid [Conference]. https://www.osti.gov/biblio/1140543 Publication ID: 37238
  • Lin, P., Rajamanickam, S., Siefert, C., Bettencourt, M.T., Cyr, E., Domino, S., Fisher, T., Hoemmen, M., Hu, J., Phipps, E., Prokopenko, A., & Prokopenko, A. (2013). Enabling extreme-scale simulations with next-generation Trilinos for Sierra low Mach fluid application code [Conference]. https://www.osti.gov/biblio/1121283 Publication ID: 31744
  • Tuminaro, R., Hu, J., Prokopenko, A., Siefert, C., Tsuji, P., Boman, E., Cyr, E., Lin, P., Shadid, J.N., & Shadid, J.N. (2013). Amoritzing AMG Components Across Problem Sequences [Conference]. https://www.osti.gov/biblio/1106439 Publication ID: 35034
  • Phipps, E., Edwards, H., Hu, J., Ostien, J.T., & Ostien, J.T. (2013). Realizing Exascale Performance for Uncertainty Quantification [Conference]. https://www.osti.gov/biblio/1107525 Publication ID: 35264
  • Prokopenko, A., Hu, J., Tuminaro, R., & Tuminaro, R. (2013). On Parallelization of Energy Minimizing Multigrid [Conference]. https://www.osti.gov/biblio/1113067 Publication ID: 34355
  • Hu, J. (2013). Scaling Challenges in Multigrid Solvers [Conference]. https://www.osti.gov/biblio/1106095 Publication ID: 34505
  • Phipps, E., Edwards, H., Hu, J., Ostien, J.T., & Ostien, J.T. (2013). Exploring Emerging Manycore Architectures for Uncertainty Quantification Through Embedded Stochastic Galerkin Methods [Conference]. https://www.osti.gov/biblio/1115474 Publication ID: 33942
  • Prokopenko, A., Hu, J., Tuminaro, R., & Tuminaro, R. (2013). Algebric Multigrid using Energy-Minimization in Parallel Setting [Conference]. https://www.osti.gov/biblio/1083709 Publication ID: 34065
  • Tuminaro, R., Boman, E., Hu, J., Prokopenko, A., Siefert, C., Tsuji, P., & Tsuji, P. (2013). Toward Flexible Scalable Algebraic Multigrid Solvers [Conference]. https://www.osti.gov/biblio/1083708 Publication ID: 34096
  • Phipps, E., Hu, J., Edwards, H., & Edwards, H. (2013). Realizing Exascale Performance for Uncertainty Quantification [Conference]. https://www.osti.gov/biblio/1079546 Publication ID: 33580
  • Prokopenko, A., Hu, J., Tuminaro, R., & Tuminaro, R. (2013). Energy Minimization in Parallel Setting [Conference]. https://www.osti.gov/biblio/1145360 Publication ID: 32593
  • Phipps, E., Edwards, H., Hu, J., Ostien, J.T., & Ostien, J.T. (2013). Exploring Emerging Manycore Architectures for Uncertainty Quantification Through Embedded Stochastic Galerkin Methods. Proposed for publication in International Journal of Computer Mathematics.. https://www.osti.gov/biblio/1063466 Publication ID: 31497
  • Hu, J. (2012). MueLu ? A Flexible Parallel Multigrid Framework [Presentation]. https://www.osti.gov/biblio/1648412 Publication ID: 30869
  • Lin, P., Shadid, J.N., Tuminaro, R., Hu, J., & Hu, J. (2012). Towards Scalable Algebraic Multigrid Preconditioners for Parallel Drift-Diffusion and Magnetohydrodynamic Simulations [Conference]. https://www.osti.gov/biblio/1116587 Publication ID: 29327
  • Phipps, E., Edwards, H., Hu, J., & Hu, J. (2012). Preliminary Investigations of Multi-Core Accelerated Embedded Uncertainty Quantification [Conference]. https://www.osti.gov/biblio/1068443 Publication ID: 27299
  • Tuminaro, R., Hu, J., & Hu, J. (2012). Energy Minimizing AMG for Problem Sequences: Adaptation to Applications and Advanced Architectures [Conference]. https://www.osti.gov/biblio/1068433 Publication ID: 27302
  • Lin, P., Shadid, J.N., Tuminaro, R., Hu, J., & Hu, J. (2011). HIgh Fidelity Semiconductor Device Simulations on Massively Parallel Platforms [Conference]. https://www.osti.gov/biblio/1118478 Publication ID: 25448
  • Hu, J., Gaidamour, J., Siefert, C., Tuminaro, R., & Tuminaro, R. (2011). Algebraic Multigrid for Systems of PDEs Based on Energy Minimization Principles [Conference]. https://www.osti.gov/biblio/1140298 Publication ID: 23525
  • Gaidamour, J., Hu, J., Tuminaro, R., Siefert, C., & Siefert, C. (2011). MueMat: a MATLAB Toolbox to Experiment with New Multigrid Preconditioners [Conference]. https://www.osti.gov/biblio/1140699 Publication ID: 23531
  • Tuminaro, R., Gaidamour, J., Gerstenberger, A., Hu, J., Siefert, C., & Siefert, C. (2011). Leveraging flexibility in energy minimization algebraic multigrid [Conference]. https://www.osti.gov/biblio/1288862 Publication ID: 21858
  • Gaidamour, J., Hu, J., Siefert, C., Tuminaro, R., & Tuminaro, R. (2011). Designing an extensible framework for multigrid algorithm research [Conference]. https://www.osti.gov/biblio/1120626 Publication ID: 22122
  • Tuminaro, R., Hu, J., Gaidamour, J., Siefert, C., Gerstenberger, A., & Gerstenberger, A. (2010). A flexible AMG framework centered on energy minimization [Conference]. https://www.osti.gov/biblio/1035650 Publication ID: 20938
  • Tuminaro, R., Siefert, C., Hu, J., Gaidamour, J., & Gaidamour, J. (2010). Toward robust scalable algebraic multigrid solvers [Conference]. https://www.osti.gov/biblio/1028459 Publication ID: 20342
  • Hu, J. (2010). Trilinos Linear and Eigen Solvers Capability Area Update [Presentation]. https://www.osti.gov/biblio/1675101 Publication ID: 20571
  • Tuminaro, R., Hu, J., Cyr, E., & Cyr, E. (2009). Energy Minimizing Algebraic Multigrid for Systems of Partial Differential Equations [Presentation]. https://www.osti.gov/biblio/1696844 Publication ID: 15859
  • Tuminaro, R., Hu, J., Siefert, C., & Siefert, C. (2009). Multilevel Project [Presentation]. https://www.osti.gov/biblio/1698386 Publication ID: 15592
  • Bochev, P., Hu, J., Siefert, C., Shadid, J.N., Lin, P., & Lin, P. (2008). Multigrid & Optimal Solvers [Conference]. https://www.osti.gov/biblio/1141620 Publication ID: 14946
  • Siefert, C., Hu, J., Tuminaro, R., Boman, E., Devine, K., & Devine, K. (2008). Partitioning for Multigrid Solvers [Conference]. https://www.osti.gov/biblio/1143232 Publication ID: 13916
  • Hu, J. (2008). A Current Overview of the Trilinos Project [Conference]. https://www.osti.gov/biblio/1145483 Publication ID: 13316
  • Siefert, C., Bochev, P., Hu, J., Tuminaro, R., & Tuminaro, R. (2008). Performance and Scalability in Computational Electromagnetics at Sandia [Presentation]. https://www.osti.gov/biblio/1713030 Publication ID: 12554
  • Siefert, C., Hu, J., Tuminaro, R., & Tuminaro, R. (2007). What’s New in ML? New Features in Trilinos 8.0 [Conference]. https://www.osti.gov/biblio/1147372 Publication ID: 11914
  • Siefert, C., Bochev, P., Tuminaro, R., Hu, J., & Hu, J. (2007). Algebraic Multigrid and a Compatible Gauge Reformulation of Maxwell’s Equations [Conference]. https://www.osti.gov/biblio/1146660 Publication ID: 12209
  • Robinson, A., Mosso, S., Siefert, C., Hu, J., & Hu, J. (2007). Consequences for scalability arising from multi-material modeling [Conference]. https://www.osti.gov/biblio/1266907 Publication ID: 11196
  • Tuminaro, R., Hu, J., & Hu, J. (2007). A New Smoothed Aggregation Multigrid Method for Anisotropic Problems. Journal of Computational Physics. https://www.osti.gov/biblio/1147337 Publication ID: 10901
  • Domino, S., Tuminaro, R., Robinson, A., Hu, J., & Hu, J. (2007). High performance parallel multigrid for large-scale electromagnetics simulations [Conference]. https://www.osti.gov/biblio/1267112 Publication ID: 9073
  • Bochev, P., Tuminaro, R., Hu, J., & Hu, J. (2007). An algebraic multigrid approach based on a compatible gauge reformulation of Maxwell’s equations. Proposed for publication in SIAM Journal on Scientific Computing.. https://www.osti.gov/biblio/908080 Publication ID: 9237
  • Siefert, C., Bochev, P., Hu, J., Tuminaro, R., & Tuminaro, R. (2007). Algebraic Multigrid and Algebraic Reformulations of the Eddy Current Equations [Conference]. https://www.osti.gov/biblio/1143320 Publication ID: 8957
  • Siefert, C., Tuminaro, R., Hu, J., & Hu, J. (2006). What’s new in ML?: new features in Trilinos 7.0 [Conference]. https://www.osti.gov/biblio/899085 Publication ID: 8328
  • Tuminaro, R., Bochev, P., Hu, J., & Hu, J. (2006). AMG and a Discrete Reformulation for Maxwell’s Equations [Presentation]. https://www.osti.gov/biblio/1724653 Publication ID: 8225
  • Tuminaro, R., Hu, J., Siefert, C., & Siefert, C. (2006). Generalizing Smoothed Aggregation on Algebraic Multigrid [Presentation]. https://www.osti.gov/biblio/1725736 Publication ID: 7853
  • Sala, M., Tuminaro, R., Hu, J., & Hu, J. (2004). ML 3.1 smoothed aggregation user’s guide. https://doi.org/10.2172/974895 Publication ID: 3697
  • Sala, M., Hu, J., Tuminaro, R., & Tuminaro, R. (2004). ML 3.0 smoothed aggregation user’s guide. https://doi.org/10.2172/919154 Publication ID: 2954
  • Sala, M., Hu, J., Tuminaro, R., & Tuminaro, R. (2004). ML 3.1 developer’s guide. https://doi.org/10.2172/974885 Publication ID: 3698
  • Heroux, M., Kolda, T., Long, K., Hoekstra, R., Pawlowski, R., Phipps, E., Salinger, A., Williams, A., Heroux, M., Hu, J., Lehoucq, R., Thornquist, H., Tuminaro, R., Willenbring, J.M., Bartlett, R., Howle, V.E., & Howle, V.E. (2003). An overview of Trilinos. https://doi.org/10.2172/918383 Publication ID: 2497
Showing 10 of 140 publications.