Parallel iterative solvers of GeoFEM with selective blocking preconditioning for nonlinear contact problems on the Earth Simulator K Nakajima Proceedings of the 2003 ACM/IEEE Conference on Supercomputing, 13, 2003 | 68 | 2003 |

Parallel iterative solvers with localized ILU preconditioning for unstructured grids on workstation clusters K Nakajima, H Okuda International Journal of Computational Fluid Dynamics 12 (3-4), 315-322, 1999 | 64 | 1999 |

A fast scalable implicit solver for nonlinear time-evolution earthquake city problem on low-ordered unstructured finite elements with artificial intelligence and transprecision … T Ichimura, K Fujita, T Yamaguchi, A Naruse, JC Wells, TC Schulthess, ... SC18: International Conference for High Performance Computing, Networking …, 2018 | 49 | 2018 |

Hybrid adaptation method and directional viscous multigrid with prismatic-tetrahedral meshes V Parthasarathy, Y Kallinderis, K Nakajima 33rd Aerospace Sciences Meeting and Exhibit, 670, 1995 | 49 | 1995 |

Three-level hybrid vs. flat mpi on the earth simulator: Parallel iterative solvers for finite-element method K Nakajima Applied Numerical Mathematics 54 (2), 237-255, 2005 | 45 | 2005 |

An Incompressible Navier-Stokes Method with Adaptive Hybrid Grids Y Kallinderis, K Nakajima Offshore Technology Research Center, 1992 | 33 | 1992 |

Parallel iterative solvers for finite-element methods using an OpenMP/MPI hybrid programming model on the Earth Simulator K Nakajima Parallel Computing 31 (10-12), 1048-1065, 2005 | 32 | 2005 |

Optimizing parallel performance of unstructured volume rendering for the Earth Simulator L Chen, I Fujishiro, K Nakajima Parallel Computing 29 (3), 355-371, 2003 | 30 | 2003 |

A multi-scale heart simulation on massively parallel computers A Hosoi, T Washio, J Okada, Y Kadooka, K Nakajima, T Hisada SC'10: Proceedings of the 2010 ACM/IEEE International Conference for High …, 2010 | 28 | 2010 |

Parallel finite element analysis platform for the Earth Simulator: GeoFEM H Okuda, K Nakajima, M Iizuka, L Chen, H Nakamura International Conference on Computational Science, 773-780, 2003 | 28 | 2003 |

Parallel performance optimization of large-scale unstructured data visualization for the earth simulator. L Chen, I Fujishiro, K Nakajima EGPGV 2, 133-140, 2002 | 27 | 2002 |

Parallel iterative solvers for unstructured grids using an OpenMP/MPI hybrid programming model for the GeoFEM platform on SMP cluster architectures K Nakajima, H Okuda International Symposium on High Performance Computing, 437-448, 2002 | 27 | 2002 |

Flat mpi vs. hybrid: Evaluation of parallel programming models for preconditioned iterative solvers on “t2k open supercomputer” K Nakajima 2009 International Conference on Parallel Processing Workshops, 73-80, 2009 | 26 | 2009 |

Finite element method for incompressible viscous flows with adaptive hybrid grids Y Kallinderis, K Nakajima AIAA journal 32 (8), 1617-1625, 1994 | 26 | 1994 |

Performance and scalability of lightweight multi-kernel based operating systems B Gerofi, R Riesen, M Takagi, T Boku, K Nakajima, Y Ishikawa, ... 2018 IEEE International Parallel and Distributed Processing Symposium (IPDPS …, 2018 | 24 | 2018 |

ppOpen-HPC: open source infrastructure for development and execution of large-scale scientific applications on post-peta-scale supercomputers with automatic tuning (AT) K Nakajima, M Satoh, T Furumura, H Okuda, T Iwashita, H Sakaguchi, ... Optimization in the Real World: Toward Solving Real-World Optimization …, 2016 | 24 | 2016 |

Optimization of serial and parallel communications for parallel geometric multigrid method K Nakajima 2014 20th IEEE International Conference on Parallel and Distributed Systems …, 2014 | 24 | 2014 |

OpenMP/MPI hybrid vs. flat MPI on the Earth Simulator: Parallel iterative solvers for finite element method K Nakajima International Symposium on High Performance Computing, 486-499, 2003 | 22 | 2003 |

Nuclear magnetic relaxation of dense Kondo system YbAgCu4 H Nakamura, K Nakajima, Y Kitaoka, K Asayama, K Yoshimura, T Nitta Physica B: Condensed Matter 171 (1-4), 238-241, 1991 | 22 | 1991 |

OpenMP/MPI hybrid parallel multigrid method on fujitsu FX10 supercomputer system K Nakajima 2012 IEEE International Conference on Cluster Computing Workshops, 199-206, 2012 | 21 | 2012 |