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Peer-reviewed articles

Published

Conference Presentations and Posters

Upcoming conferences and workshops

  • DOE Workshop on Software Productivity for Extreme-Scale Science, 2013-10-22 to 23
  • International Conference for High Performance Computing, Networking, Storage and Analysis (SC13), Denver, CO, 2013-11-17 to 22.
  • American Geophysical Union Fall Meeting, San Francisco, 2013-12-16 to 20

2014

  • J. Brown, Numerical libraries and frameworks, (invited) ENES Workshop on Exascale Technologies, Hamburg, 2014-03-18.
  • J. Brown, Exploits in implicitness, SIAG/SC Junior Scientist Award talk at SIAM PP14, 2014-02-22.
  • J. Brown, M. Adams, M. Knepley, Low-communication multigrid, with applications to time-dependent adjoints, in-situ visualization, and resilience, SIAM PP14, 2014-02-19.
  • J. Brown, Multigrid on the outside: restructuring time integration and adaptivity, LBL, 2014-01-16.
  • J. Brown, Present and future computing requirements for PETSc, NERSC ASCR Requirements Workshop, LBL, 2014-01-15.

2013

  • J. Brown, Parallel nonlinear solvers for viscoplastic models of sea ice, American Geophysical Union Fall Meeting, 2013-12-11.
  • J. Brown and D. Ghosh, Fast solvers for implicit Runge-Kutta systems, JointLab Workshop, 2013-11-26.
  • J. Brown, Librarization, composition, and algorithm/hardware interplay in implicit solvers and analysis, SC13 DOE Booth, 2013-11-21.
  • J. Brown, Prospects for next-generation multigridding, Imperial College London, 2013-09-26 and Oxford University, 2013-09-27.
  • J. Brown, P. Brune, E. Constantinescu, D. Ghosh, L.C. McInnes, PETSc and BOUT++, 2013 BOUT++ workshop, LLNL, 2013-09-04.
  • J. Brown, Vectorization, communication aggregation, and reuse in stochastic and temporal dimensions, DOE Exascale Math Workshop, Washington, DC, 2013-08-21.
  • J. Brown, M. Otten, B. Smith, Interactive solver design using eigen-analysis, DOE Applied Math PI meeting, 2013-08-07.
  • E. Constantinescu, J. Brown, B. Smith, L.C. McInnes, D. Ghosh, S. Balay, Robust Implicit-Explicit Time Stepping, DOE Applied Math PI meeting, 2013-08-06.
  • J. Brown and S. Dalton, GPU-accelerated smoothed aggregation algebraic multigrid: Multi-node scalability and versatility, GPU-SMP13, Changchun, China, 2013-07-30.
  • J. Brown, Vectorization, communication aggregation, and reuse in stochastic and temporal dimensions, JointLab workshop, Lyon, France, 2013-06-13.
  • J. Brown and P. Brune Low-rank Quasi-Newton Updates for Robust Jacobian Lagging in Newton Methods, International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, Sun Valley, ID, May 5-9.
  • J. Brown, Discretizations, solvers, and statistics in computational geodynamics, (invited) EarthCube Modeling Workshop, Boulder, CO, 2013-04-23.
  • J. Brown, S. Abhyankar, B. Smith, Sharing Thread Pools and Caches for Inter-library Composition and Multicore Performance, SIAM CSE, Boston, MA, February 25-March 1. pdf
  • Software Carpentry Boot Camp, University of Chicago, January 12-13, 2013.
  • J. Brown, High Performance Implicit Solvers for Geodynamics, CIG Webinar, January 10, 2013. pdf

2012

  • J. Brown, M. Adams, M. Knepley, B. Smith, Multilevel solvers with adaptive coarse space construction for lithosphere dynamics, 1st International Conference on Frontiers in Computational Physics: Modeling the Earth System, Boulder, CO, December 16-20, 2012. pdf
  • J. Brown, M. Adams, M. Knepley, B. Smith, Adaptive coarse space construction and nonlinear smoothers for heterogeneous Stokes problems, AGU Fall Meeting, San Francisco, December 3-7, 2012. pdf
  • J. Brown, M. Adams, P. Brune, M. Knepley, D. May, B. Smith, Composable multilevel solvers in PETSc, Oak Ridge National Laboratory, November 14, 2012. pdf
  • J. Brown and M. Knepley, Modern Algorithms Through Libraries, EarthCube End-User Domain Workshop for EarthScope, Tempe, AZ, October 29-30, 2012. pdf
  • Pervasive Multiscale Modeling, Analysis, and Solvers, Bridging the Gap Between the Geosciences and Mathematics, Statistics, and Computer Science, Princeton, October 1-2, 2013. pdf
  • Libraries Panel Discussion, Libraries and Autotuning for Extreme-scale Applications, Snowbird, UT, August 13-14.
  • Multilevel Stokes flow solvers: Adapting to heterogeneity and rheology, Mantle Convection and Lithospheric Dynamics Workshop, UC Davis, July 30, 2012. pdf
  • J. Brown, M. Adams, P. Brune, M. Knepley, L.C. McInnes, and B. Smith, Composable multilevel methods for multiphysics simulation, SIAM Annual Meeting, Minneapolis, July 9-13, 2012. pdf
  • J. Brown, I. Grindeanu, B. Smith, T. Tautges, A parallel unstructured implicit 3D polythermal model for outlet glaciers, International Glaciology Society International Symposium, Fairbanks, AK, June 24-29, 2012. pdf
  • J. Brown, P. Brune, E. Constantinescu, M. Knepley, and B. Smith, Towards high throughput composable multilevel solvers for implicit multiphysics simulation, National Renewable Energy Laboratory, Golden, CO, 2012-04-27. pdf
  • M. Adams (presenting), J. Brown, and B. Smith, Exascale programming models must vigorously enable libraries, Exascale Research Conference, Portland, 2012-04-16 to 18.
  • J. Brown, User-defined nonblocking collectives must make progress, Exascale Research Conference, Portland, 2012-04-16 to 18. slides
  • M. Anitescu, J. Brown, P. Fischer (presenting), S. Leyffer, L. C. McInnes, T. Munson, and B. Smith, Exascale co-design opportunities: Multilevel approaches for hierarchical models, architectures, algorithms, and software, Exascale Research Conference, Portland, 2012-04-16 to 18.
  • J. Brown, M. Knepley, D. May, and B. Smith, Scalable and composable implicit solvers for polythermal ice flow with steep topography, International Conference on Scientific Computing and Applications, Las Vegas, 2012-04-01 to 04. slides
  • J. Brown, M. Adams, P. Brune, M. Knepley, D. May, L. C. McInnes, and B. Smith, Commuting block preconditioning with multigrid, Copper Mountain Conference on Iterative Methods, 2012-03-27. slides
  • J. Brown, M. Knepley, D. May, and B. Smith, Towards high throughput composable multilevel solvers for implicit multiphysics simulation, Center for Computational Engineering Distinguished Speaker Series, MIT, 2012-03-21. slides
  • J. Brown, M. Knepley, D. May, and B. Smith, Towards algorithmic and software composability for implicit multiphysics with high throughput, ICES/PECOS seminar, UT Austin, 2012-02-23. slides
  • J. Brown, M. Knepley, D. May, and B. Smith, Commuting block preconditioned splitting with multigrid within the same code base, SIAM conference on Parallel Processing, 2012-02-17. slides
  • J. Brown, A. Ahmadia, M. Knepley, and B. Smith, Utilizing emerging multicore and GPU hardware for multiphysics simulation through implicit high-order finite element methods with tensor product structure, SIAM conference on Parallel Processing, 2012-02-15. slides
  • J. Brown, M. Adams, P. Brune, M. Knepley, D. May, and B. Smith, Toward less synchronous composable multilevel methods for implicit multiphysics simulation, invited talk at Workshop on High Performance Computing, and Hybrid Programming Concepts for Hyperbolic PDE Codes [HPC]^3, KAUST, Saudi Arabia, 2012-02-06. slides
  • J. Brown, M. Adams, P. Brune, M. Knepley, and B. Smith, Toward less synchronous composable multilevel methods for implicit multiphysics simulation, invited talk at the Workshop on Synchronization-reducing and Communication-reducing Algorithms and Programming Models for Large-scale Simulations, ICERM, Brown University, 2012-01-10. slides

2011

  • D. May, L. Le Pourhiet, J. Brown (presenting), Tightly coupled geodynamic systems: Software, implicit solvers, and applications, American Geophysical Union Fall Meeting, 2011-12-05. slides
  • J. Brown, A. Ahmadia, M. Knepley, B. Smith, Utilizing emerging hardware for multiphysics simulation through implicit high-order finite element methods with tensor product structure, American Geophysical Union Fall Meeting, 2011-12-05. slides
  • J. Brown, E. Constantinescu, and B. Smith, Tightly coupled solvers, loosely coupled software: Multi-physics solvers and time integration in PETSc, Los Alamos National Laboratory, Center for Nonlinear Studies, 2011-11-02. slides
  • J. Brown, I. Grindeanu, D. Karpeev, B. Smith, and T. Tautges, Interactive transient and steady-state analysis of regional ice flow, World Climate Research Programme, Denver, CO, 2011-10-26. poster
  • Institute for Computing in Science: Multiphysics Simulations: Challenges and Opportunities, 2011-07-30 to 2011-08-06.
  • Jed Brown, Dave May, and Barry Smith, Strongly coupled solvers with loosely coupled software, 7th International Congress on Industrial and Applied Mathematics - ICIAM 2011, Vancouver, Canada, 2011-07-21. slides
  • Jed Brown, Iulian Grindeanu, Dmitry Karpeev, Barry F. Smith, and Timothy J. Tautges, Scalable Implicit Methods for Free Surface Flows in Glaciology, 7th International Congress on Industrial and Applied Mathematics - ICIAM, Vancouver, Canada, 2011-07-20. slides
  • Jed Brown, Verifying correctness of PDE solvers using SymPy, "lightning" talk at SciPy, Austin, 2011-07-14. slides
  • Aron Ahmadia, Jed Brown, Nathan Collier, Tareq Malas, and John Gunnels, A Software Framework in Python for Generating Optimal Isogeometric Kernels on the PowerPC 450, SciPy, Austin, 2011-07-13. slides
  • Jed Brown, Strongly coupled solvers with weakly coupled software, invited talk at the Workshop on High Performance Computing and Hybrid Programming Concepts for Hyperbolic PDE Codes, KAUST, Saudi Arabia, 2011-03-27. slides
  • Jed Brown, Implicit solution of free surface flows in glaciology, SIAM Conference on Computational Science and Engineering, Reno, NV, 2011-03-01. slides
  • Jed Brown, Computational methods for several models of ice stream flow, International Conferenece on the Diversity of Research on Geophysical Environmental Sciences, ETH Zürich, 2011-02-18. slides

2010

  • Jed Brown, Solving free surface flows for steady state without time stepping, American Geophysical University Fall Meeting, 2010-12-14. poster
  • Jed Brown, Free surface flows in glaciology, ETH Zürich Seminar of Applied Mathematics Hyperbolic PDE Seminar, 2010-10-11. slides
  • Jed Brown, Implicit discretizations for grounding line dynamics, invited talk at the CCSM Annual Meeting, Breckenridge, CO, 2010-06-30. slides
  • Jed Brown, PETSc: New developments, memory performance, and algorithmic experimentation, invited talk at NOTUR-2010, Bergen, Norway, 2010-05-21. slides
  • Jed Brown, Implicit integration of 3D ice sheet flow using hybrid factorization/relaxation block preconditioning, invited talk at the Copper Mountain Conference on Iterative Methods, CO, 2010-04-08. pdf
  • Jed Brown and Barry Smith, Textbook multigrid efficiency for hydrostatic ice flow, presented at the CCSM Land Ice Working Group, Boulder, CO, 2010-02-17. slides

2009

  • Jed Brown, Accurate Time Integration of 3D Grounding Line Dynamics, poster at American Geophysical Union Fall Meeting, 2009-12-15. pdf
  • Jed Brown, Making high-order finite elements fast robust, and easy, presented at the Mathematics and Computer Science Division, Argonne National Laboratory, 2009-06-30, and at the Department of Applied Physics and Applied Mathematics, Columbia University, 2009-07-02. slides
  • Jed Brown, Scalable solvers for 3D Stokes problems, Los Alamos National Laboratory, 2009-06-24. slides
  • Jed Brown, Efficient nonlinear solvers for nodal high-order finite elements in 3D presented at weekly colloquium of the Center for Nonlinear Studies, Los Alamos National Laboratory, 2009-06-23.
  • Jed Brown, Scalable solvers for the 3D non-Newtonian Stokes problem in ice flow modeling, invited talk at the Community Climate System Model Annual Workshop, 2009-06-17. slides

2008

  • Jed Brown, Scalable solvers for optimal control of a power-law fluid, poster at American Geophysical Union Fall Meeting, 2008-12-15. pdf
  • Jed Brown, Scalable solvers for power law fluids, Glaciology Colloquium, ETH Zürich, 2008-12-04.
  • Jed Brown and E. Bueler, Superposition of velocity for ice sheet modeling, European Geophysical Union, 2008-04-18.
  • Jed Brown, M. Truffer, R. Fatland, M. Fahnestock, M. Lüthi, Measuring iceberg motion in Ilulissat Icefjord, Greenland, poster at European Geophysical Union, 2008-04-17.

Teaching

Software