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 | 504 | 2013 |

PETSc/TAO users manual S Balay, S Abhyankar, MF Adams, S Benson, J Brown, P Brune, ... Argonne National Laboratory, Illinois, 2022 | 266 | 2022 |

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 | 172 | 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 | 168 | 2015 |

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 | 135 | 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 | 97 | 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 | 86 | 2022 |

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 | 67 | 2015 |

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 …, 2022 | 63 | 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 | 63 | 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 | 59 | 2019 |

PETSc Web page; 2022 S Balay, S Abhyankar, MF Adams, S Benson, J Brown, P Brune, ... URL https://petsc. org, 2023 | 44 | 2023 |

PETSc/TAO Users Manual (No. ANL-21/39-Revision 3.16) S Balay, S Abhyankar, MF Adams, S Benson, J Brown, P Brune, ... Argonne National Laboratory, 2021 | 44 | 2021 |

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 | 18 | 2021 |

Support for non-conformal meshes in PETSc's DMPlex interface T Isaac, MG Knepley arXiv preprint arXiv:1508.02470, 2015 | 17 | 2015 |

PETSc/TAO Users Manual Revision 3.21 S Balay, S Abhyankar, MF Adams, S Benson, J Brown, P Brune, ... Argonne National Laboratory (ANL), Argonne, IL (United States), 2024 | 16* | 2024 |

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 | 15 | 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 |

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 | 13 | 2019 |