Multiphysics simulations: Challenges and opportunities DE Keyes, LC McInnes, C Woodward, W Gropp, E Myra, M Pernice, J Bell, ... The International Journal of High Performance Computing Applications 27 (1 …, 2013 | 435 | 2013 |

An extreme-scale implicit solver for complex PDEs: highly heterogeneous flow in earth's mantle J Rudi, ACI Malossi, T Isaac, G Stadler, M Gurnis, PWJ Staar, Y Ineichen, ... Proceedings of the international conference for high performance computing …, 2015 | 160 | 2015 |

Scalable and efficient algorithms for the propagation of uncertainty from data through inference to prediction for large-scale problems, with application to flow of the … T Isaac, N Petra, G Stadler, O Ghattas Journal of Computational Physics 296, 348-368, 2015 | 142 | 2015 |

PETSc/TAO users manual S Balay, S Abhyankar, S Benson, J Brown, PR Brune, KR Buschelman, ... Argonne National Lab.(ANL), Argonne, IL (United States), 2022 | 135 | 2022 |

Extreme-scale AMR C Burstedde, O Ghattas, M Gurnis, T Isaac, G Stadler, T Warburton, ... SC'10: Proceedings of the 2010 ACM/IEEE International Conference for High …, 2010 | 130 | 2010 |

Recursive algorithms for distributed forests of octrees T Isaac, C Burstedde, LC Wilcox, O Ghattas SIAM Journal on Scientific Computing 37 (5), C497-C531, 2015 | 94 | 2015 |

Solution of nonlinear Stokes equations discretized by high-order finite elements on nonconforming and anisotropic meshes, with application to ice sheet dynamics T Isaac, G Stadler, O Ghattas SIAM Journal on Scientific Computing 37 (6), B804-B833, 2015 | 65 | 2015 |

PETSc: Portable, extensible toolkit for scientific computation S Balay, S Abhyankar, MF Adams, S Benson, J Brown, P Brune, ... Astrophysics Source Code Library, ascl: 2210.016, 2022 | 60 | 2022 |

Low-cost parallel algorithms for 2: 1 octree balance T Isaac, C Burstedde, O Ghattas 2012 IEEE 26th International Parallel and Distributed Processing Symposium …, 2012 | 58 | 2012 |

Strong scaling for numerical weather prediction at petascale with the atmospheric model NUMA A Müller, MA Kopera, S Marras, LC Wilcox, T Isaac, FX Giraldo The International Journal of High Performance Computing Applications 33 (2 …, 2019 | 52 | 2019 |

Fande Kong, Scott Kruger, Dave A S Balay, S Abhyankar, MF Adams, S Benson, J Brown, P Brune, ... May, Lois Curfman McInnes, Richard Tran Mills, Lawrence Mitchell, Todd …, 2021 | 28 | 2021 |

Inversion of geothermal heat flux in a thermomechanically coupled nonlinear Stokes ice sheet model H Zhu, N Petra, G Stadler, T Isaac, TJR Hughes, O Ghattas The Cryosphere 10 (4), 1477-1494, 2016 | 15 | 2016 |

Discontinuous Galerkin methods for plasma physics in the scrape-off layer of tokamaks C Michoski, D Meyerson, T Isaac, F Waelbroeck Journal of Computational Physics 274, 898-919, 2014 | 15 | 2014 |

Direct numerical simulation of incompressible flows on parallel octree grids R Egan, A Guittet, F Temprano-Coleto, T Isaac, FJ Peaudecerf, JR Landel, ... Journal of Computational Physics 428, 110084, 2021 | 12 | 2021 |

On the number of face-connected components of morton-type space-filling curves C Burstedde, J Holke, T Isaac Foundations of Computational Mathematics 19, 843-868, 2019 | 11 | 2019 |

Support for non-conformal meshes in PETSc's DMPlex interface T Isaac, MG Knepley arXiv preprint arXiv:1508.02470, 2015 | 11 | 2015 |

TAPsolver: A Python package for the simulation and analysis of TAP reactor experiments A Yonge, MR Kunz, R Batchu, Z Fang, T Issac, R Fushimi, AJ Medford Chemical Engineering Journal 420, 129377, 2021 | 10 | 2021 |

Landau collision integral solver with adaptive mesh refinement on emerging architectures MF Adams, E Hirvijoki, MG Knepley, J Brown, T Isaac, R Mills SIAM Journal on Scientific Computing 39 (6), C452-C465, 2017 | 10 | 2017 |

Morton curve segments produce no more than two distinct face-connected subdomains C Burstedde, T Isaac CoRR, abs/1505.05055 v2, 2015 | 10* | 2015 |

Scalable, adaptive methods for forward and inverse problems in continental-scale ice sheet modeling TG Isaac | 5 | 2015 |