Kengo Nakajima

93 papers A 6B 3C 15Misc 6Journal 14Unranked 46

Year	Rank	Type	Title / Venue / Authors
2026	—	`conf`	Integrating Quantum and HPC: A Prototype Hybrid Implementation and Benchmark of Quantum-Selected Configuration Interaction. SCA/HPC Asia Workshops Ikko Hamamura, Toshiyuki Imamura, Takashi Arakawa, Shinji Sumimoto, Kazuya Yamazaki, Yao Hu, Shinnosuke Furuya, Kengo Nakajima
2025	J	`jnl`	A Flow-rate-conserving CNN-based Domain Decomposition Method for Blood Flow Simulations. CoRR Simon Klaes, Axel Klawonn, Natalie Kubicki, Martin Lanser, Kengo Nakajima, Takashi Shimokawabe, Janine Weber
2025	—	`conf`	Accelerating Heterogeneous Coupling Computing with WaitIO Using RDMA. HPC Asia Workshops Shinji Sumimoto, Takashi Arakawa, Yoshio Sakaguchi, Hiroya Matsuba, Satoshi Ohshima, Hisashi Yashiro, Toshihiro Hanawa, Kengo Nakajima
2025	J	`jnl`	B-spline-based material point method with dynamic load balancing technique for large-scale simulation. Eng. Comput. Soma Hidano, Shaoyuan Pan, Keina Yoshida, Reika Nomura, Yohei Miki, Masatoshi Kawai, Shuji Moriguchi, Kengo Nakajima, Kenjiro Terada
2025	C	`conf`	Large Scale Ensemble Coupling of Non-hydrostatic Atmospheric Model NICAM. HPC Asia Takashi Arakawa, Hisashi Yashiro, Shinji Sumimoto, Kengo Nakajima
2024	J	`jnl`	A Cascadic Parareal Method for Parallel-in-Time Simulation of Compressible Supersonic Flow. J. Inf. Process. Yen-Chen Chen, Kengo Nakajima
2024	—	`conf`	Communication-Computation Overlapping for Parallel Multigrid Methods. IPDPS (Workshops) Kengo Nakajima
2024	—	`conf`	Heterogeneous Application Coupling Library for Center-Wide QC-HPC Hybrid Computing. CLUSTER Workshops Shinji Sumimoto, Kazuya Yamazaki, Yao Hu, Kengo Nakajima
2024	—	`conf`	Innovative Computational Science by Integration of Simulation/Data/Learning on Heterogeneous Supercomputers. CLUSTER Workshops Kengo Nakajima, Takashi Furumura, France Boillod-Cerneux, Edoardo Di Napoli, Estela Suarez, Takashi Arakawa, Shinji Sumimoto, Hisashi Yashiro
2024	J	`jnl`	Light Weight Coarse Grid Aggregation for Smoothed Aggregation Algebraic Multigrid Solver. IEEE Access Akihiro Fujii, Teruo Tanaka, Kengo Nakajima
2024	—	`conf`	MPI-Adapter2: An Automatic ABI Translation Library Builder for MPI Application Binary Portability. HPC Asia Workshops Shinji Sumimoto, Toshihiro Hanawa, Kengo Nakajima
2024	—	`conf`	Portability of Multiphysics Applications on Heterogeneous Modular Supercomputers. PPAM (3) Daniel Caviedes-Voullième, Seong-Ryong Koh, Stefan Poll, Estela Suarez, Takashi Arakawa, Kengo Nakajima, Shinji Sumimoto
2024	—	`conf`	Preliminary Performance Evaluation of Grace-Hopper GH200. CLUSTER Workshops Toshihiro Hanawa, Kengo Nakajima, Yohei Miki, Takashi Shimokawabe, Kazuya Yamazaki, Shinji Sumimoto, Osamu Tatebe, Taisuke Boku, Daisuke Takahashi, Akira Nukada, Norihisa Fujita, Ryohei Kobayashi, Hiroto Tadano, Akira Naruse
2024	C	`conf`	WaitIO-Hybrid: Communication for Coupling MPI Programs Among Heterogeneous Systems. PDCAT Shinji Sumimoto, Takashi Arakawa, Yoshio Sakaguchi, Hiroya Matsuba, Satoshi Ohshima, Hisashi Yashiro, Toshihiro Hanawa, Kengo Nakajima
2024	J	`jnl`	Xabclib:A Fully Auto-tuned Sparse Iterative Solver. CoRR Takahiro Katagiri, Takao Sakurai, Mitsuyoshi Igai, Shoji Itoh, Satoshi Ohshima, Hisayasu Kuroda, Ken Naono, Kengo Nakajima
2023	—	`conf`	Dynamic Core Binding for Load Balancing of Applications Parallelized with MPI/OpenMP. ICCS (3) Masatoshi Kawai, Akihiro Ida, Toshihiro Hanawa, Kengo Nakajima
2022	—	`conf`	A Process Management Runtime with Dynamic Reconfiguration. HPC Asia Workshops Shinji Sumimoto, Toshihiro Hanawa, Kengo Nakajima
2022	C	`conf`	A System-Wide Communication to Couple Multiple MPI Programs for Heterogeneous Computing. PDCAT Shinji Sumimoto, Takashi Arakawa, Yoshio Sakaguchi, Hiroya Matsuba, Hisashi Yashiro, Toshihiro Hanawa, Kengo Nakajima
2022	—	`conf`	Acceleration of Optimized Coarse-Grid Operators by Spatial Redistribution for Multigrid Reduction in Time. ICCS (1) Ryo Yoda, Matthias Bolten, Kengo Nakajima, Akihiro Fujii
2022	C	`conf`	Assignment of idle processors to spatial redistributed domains on coarse levels in multigrid reduction in time. HPC Asia Ryo Yoda, Matthias Bolten, Kengo Nakajima, Akihiro Fujii
2022	—	`conf`	Communication-Computation Overlapping for Preconditioned Parallel Iterative Solvers with Dynamic Loop Scheduling. HPC Asia Workshops Kengo Nakajima, Balazs Gerofi, Masashi Horikoshi, Yutaka Ishikawa
2022	C	`conf`	Development of a coupler h3-Open-UTIL/MP. HPC Asia Takashi Arakawa, Hisashi Yashiro, Kengo Nakajima
2022	—	`conf`	Exploring Communication-Computation Overlap in Parallel Iterative Solvers on Manycore CPUs using Asynchronous Progress Control. HPC Asia Workshops Masashi Horikoshi, Balazs Gerofi, Yutaka Ishikawa, Kengo Nakajima
2022	J	`jnl`	IEEE Special Issue on Innovative R&D Toward the Exascale Era. IEEE Trans. Parallel Distributed Syst. Sadaf R. Alam, Lois Curfman McInnes, Kengo Nakajima
2022	C	`conf`	Low/Adaptive Precision Computation in Preconditioned Iterative Solvers for Ill-Conditioned Problems. HPC Asia Masatoshi Kawai, Kengo Nakajima
2021	—	`conf`	Efficient Parallel Multigrid Methods on Manycore Clusters with Double/Single Precision Computing. IPDPS Workshops Kengo Nakajima, Takeshi Ogita, Masatoshi Kawai
2021	—	`conf`	Optimized Cascadic Multigrid Parareal Method for Explicit Time-Marching Schemes. ScalA@SC Yen-Chen Chen, Kengo Nakajima
2020	J	`jnl`	Development of element-by-element kernel algorithms in unstructured finite-element solvers for many-core wide-SIMD CPUs: Application to earthquake simulation. J. Comput. Sci. Kohei Fujita, Masashi Horikoshi, Tsuyoshi Ichimura, Larry Meadows, Kengo Nakajima, Muneo Hori, Lalith Maddegedara
2020	—	`ch.`	ESSEX: Equipping Sparse Solvers For Exascale. Software for Exascale Computing Christie L. Alappat, Andreas Alvermann, Achim Basermann, Holger Fehske, Yasunori Futamura, Martin Galgon, Georg Hager, Sarah Huber, Akira Imakura, Masatoshi Kawai, Moritz Kreutzer, Bruno Lang, Kengo Nakajima, Melven Röhrig-Zöllner, Tetsuya Sakurai, Faisal Shahzad, Jonas Thies, Gerhard Wellein
2020	C	`conf`	Multiplicative Schwartz-Type Block Multi-Color Gauss-Seidel Smoother for Algebraic Multigrid Methods. HPC Asia Masatoshi Kawai, Akihiro Ida, Hiroya Matsuba, Kengo Nakajima, Matthias Bolten
2020	C	`conf`	The Effectiveness of Low-Precision Floating Arithmetic on Numerical Codes: A Case Study on Power Consumption. HPC Asia Ryuichi Sakamoto, Masaaki Kondo, Kohei Fujita, Tsuyoshi Ichimura, Kengo Nakajima
2019	—	`conf`	Combining Algorithmic Rethinking and AVX-512 Intrinsics for Efficient Simulation of Subcellular Calcium Signaling. ICCS (5) Chad Jarvis, Glenn Terje Lines, Johannes Langguth, Kengo Nakajima, Xing Cai
2019	—	`conf`	Development of Element-by-Element Kernel Algorithms in Unstructured Implicit Low-Order Finite-Element Earthquake Simulation for Many-Core Wide-SIMD CPUs. ICCS (1) Kohei Fujita, Masashi Horikoshi, Tsuyoshi Ichimura, Larry Meadows, Kengo Nakajima, Muneo Hori, Lalith Maddegedara
2019	—	`conf`	Parallel Multigrid Methods on Manycore Clusters with IHK/McKernel. ScalA@SC Kengo Nakajima, Balazs Gerofi, Yutaka Ishikawa, Masashi Horikoshi
2018	A	`conf`	A Fast Scalable Implicit Solver with Concentrated Computation for Nonlinear Time-Evolution Problems on Low-Order Unstructured Finite Elements. IPDPS Tsuyoshi Ichimura, Kohei Fujita, Masashi Horikoshi, Larry Meadows, Kengo Nakajima, Takuma Yamaguchi, Kentaro Koyama, Hikaru Inoue, Akira Naruse, Keisuke Katsushima, Muneo Hori, Lalith Maddegedara
2018	A	`conf`	A fast scalable implicit solver for nonlinear time-evolution earthquake city problem on low-ordered unstructured finite elements with artificial intelligence and transprecision computing. SC Tsuyoshi Ichimura, Kohei Fujita, Takuma Yamaguchi, Akira Naruse, Jack C. Wells, Thomas C. Schulthess, Tjerk P. Straatsma, Christopher Zimmer, Maxime Martinasso, Kengo Nakajima, Muneo Hori, Lalith Maddegedara
2018	—	`conf`	Algebraic Multigrid Solver Using Coarse Grid Aggregation with Independent Aggregation. IPDPS Workshops Naoya Nomura, Akihiro Fujii, Teruo Tanaka, Osni Marques, Kengo Nakajima
2018	C	`conf`	Chebyshev Filter Diagonalization on Modern Manycore Processors and GPGPUs. ISC Moritz Kreutzer, Dominik Ernst, Alan R. Bishop, Holger Fehske, Georg Hager, Kengo Nakajima, Gerhard Wellein
2018	—	`conf`	Design of Parallel BEM Analyses Framework for SIMD Processors. ICCS (1) Tetsuya Hoshino, Akihiro Ida, Toshihiro Hanawa, Kengo Nakajima
2018	C	`conf`	Load-Balancing-Aware Parallel Algorithms of H-Matrices with Adaptive Cross Approximation for GPUs. CLUSTER Tetsuya Hoshino, Akihiro Ida, Toshihiro Hanawa, Kengo Nakajima
2018	A	`conf`	Performance and Scalability of Lightweight Multi-kernel Based Operating Systems. IPDPS Balazs Gerofi, Rolf Riesen, Masamichi Takagi, Taisuke Boku, Kengo Nakajima, Yutaka Ishikawa, Robert W. Wisniewski
2018	C	`conf`	Wave Propagation Simulation of Complex Multi-Material Problems with Fast Low-Order Unstructured Finite-Element Meshing and Analysis. HPC Asia Kohei Fujita, Keisuke Katsushima, Tsuyoshi Ichimura, Masashi Horikoshi, Kengo Nakajima, Muneo Hori, Lalith Maddegedara
2017	—	`conf`	Communication-Computation Overlapping with Dynamic Loop Scheduling for Preconditioned Parallel Iterative Solvers on Multicore and Manycore Clusters. ICPP Workshops Kengo Nakajima, Toshihiro Hanawa
2017	—	`conf`	Hierarchical Parallelization of Multi-coloring Algorithms for Block IC Preconditioners. HPCC/SmartCity/DSS Masatoshi Kawai, Akihiro Ida, Kengo Nakajima
2017	—	`conf`	Implicit Low-Order Unstructured Finite-Element Multiple Simulation Enhanced by Dense Computation Using OpenACC. WACCPD@SC Takuma Yamaguchi, Kohei Fujita, Tsuyoshi Ichimura, Muneo Hori, Lalith Maddegedara, Kengo Nakajima
2017	J	`jnl`	Implicit Low-Order Unstructured Finite-Element Multiple Simulation Enhanced by Dense Computation using OpenACC. CoRR Takuma Yamaguchi, Kohei Fujita, Tsuyoshi Ichimura, Muneo Hori, Lalith Maddegedara, Kengo Nakajima
2017	—	`conf`	Low-profile and small-sized spiral-shaped microstrip line antenna with multi-band operation in UHF frequency band. RWS Kengo Nakajima, Kengo Kunishige, Futoshi Kuroki, Yasushi Hamada, Masaki Numoto
2016	—	`conf`	From FLOPS to BYTES: disruptive change in high-performance computing towards the post-moore era. Conf. Computing Frontiers Satoshi Matsuoka, Hideharu Amano, Kengo Nakajima, Koji Inoue, Tomohiro Kudoh, Naoya Maruyama, Kenjiro Taura, Takeshi Iwashita, Takahiro Katagiri, Toshihiro Hanawa, Toshio Endo
2016	Misc	`conf`	Parallel Iterative Solvers for Ill-conditioned Problems with Heterogeneous Material Properties. ICCS Kengo Nakajima
2016	—	`conf`	Performance Analysis of SA-AMG Method by Setting Extracted Near-Kernel Vectors. VECPAR Naoya Nomura, Akihiro Fujii, Teruo Tanaka, Kengo Nakajima, Osni Marques
2015	—	`ed.`	High Performance Computing for Computational Science - VECPAR 2014 - 11th International Conference, Eugene, OR, USA, June 30 - July 3, 2014, Revised Selected Papers VECPAR Michel J. Daydé, Osni Marques, Kengo Nakajima
2015	Misc	`conf`	Multi-scale Coupling Simulation of Seismic Waves and Building Vibrations Using ppOpen-HPC. ICCS Masaharu Matsumoto, Takashi Arakawa, Takeshi Kitayama, Futoshi Mori, Hiroshi Okuda, Takashi Furumura, Kengo Nakajima
2014	Misc	`conf`	Implementation and Evaluation of an AMR Framework for FDM Applications. ICCS Masaharu Matsumoto, Futoshi Mori, Satoshi Ohshima, Hideyuki Jitsumoto, Takahiro Katagiri, Kengo Nakajima
2014	B	`conf`	Optimization of serial and parallel communications for parallel geometric multigrid method. ICPADS Kengo Nakajima
2013	—	`ed.`	High Performance Computing for Computational Science - VECPAR 2012, 10th International Conference, Kobe, Japan, July 17-20, 2012, Revised Selected Papers VECPAR Michel J. Daydé, Osni Marques, Kengo Nakajima
2012	—	`conf`	Automatic Tuning of Parallel Multigrid Solvers Using OpenMP/MPI Hybrid Parallel Programming Models. VECPAR Kengo Nakajima
2012	—	`conf`	Control Formats for Unsymmetric and Symmetric Sparse Matrix-Vector Multiplications on OpenMP Implementations. VECPAR Takahiro Katagiri, Takao Sakurai, Mitsuyoshi Igai, Satoshi Ohshima, Hisayasu Kuroda, Ken Naono, Kengo Nakajima
2012	—	`conf`	Implementation and Evaluation of 3D Finite Element Method Application for CUDA. VECPAR Satoshi Ohshima, Masae Hayashi, Takahiro Katagiri, Kengo Nakajima
2012	—	`conf`	New strategy for coarse grid solvers in parallel multigrid methods using OpenMP/MPI hybrid programming models. PMAM Kengo Nakajima
2012	—	`conf`	Numerical Simulation of Long-Term Fate of CO VECPAR Hajime Yamamoto, Shinichi Nanai, Keni Zhang, Pascal Audigane, Christophe Chiaberge, Ryusei Ogata, Noriaki Nishikawa, Yuichi Hirokawa, Satoru Shingu, Kengo Nakajima
2012	—	`conf`	OpenMP/MPI Hybrid Parallel ILU(k) Preconditioner for FEM Based on Extended Hierarchical Interface Decomposition for Multi-core Clusters. VECPAR Masae Hayashi, Kengo Nakajima
2012	—	`conf`	OpenMP/MPI Hybrid Parallel Multigrid Method on Fujitsu FX10 Supercomputer System. CLUSTER Workshops Kengo Nakajima
2012	C	`conf`	Revisiting Persistent Communication in MPI. EuroMPI Yutaka Ishikawa, Kengo Nakajima, Atsushi Hori
2012	—	`conf`	Topic 15: High Performance and Scientific Applications. Euro-Par Thomas Ludwig, Costas Bekas, Alice Koniges, Kengo Nakajima
2011	Misc	`conf`	First International Workshop on Advances in High-Performance Computational Earth Sciences: Applications and Frameworks (IHPCES). ICCS Takashi Furumura, Kengo Nakajima, Masaki Satoh
2011	—	`conf`	Introduction. Euro-Par (2) Olivier Coulaud, Kengo Nakajima, Esmond G. Ng, Mariano Vázquez
2010	A	`conf`	A Multi-Scale Heart Simulation on Massively Parallel Computers. SC Akira Hosoi, Takumi Washio, Jun-ichi Okada, Yoshimasa Kadooka, Kengo Nakajima, Toshiaki Hisada
2010	—	`conf`	Parallel Multigrid Solvers Using OpenMP/MPI Hybrid Programming Models on Multi-Core/Multi-Socket Clusters. VECPAR Kengo Nakajima
2009	—	`conf`	Flat MPI vs. Hybrid: Evaluation of Parallel Programming Models for Preconditioned Iterative Solvers on . ICPP Workshops Kengo Nakajima
2009	—	`conf`	Parallel Multistage Preconditioners by Extended Hierarchical Interface Decomposition for Ill-Conditioned Problems. PARCO Kengo Nakajima
2009	B	`conf`	Participatory Simulation Environment gumonji/Q: A Network Game Empowered by Agents. PRIMA Shohei Yamane, Shoichi Sawada, Hiromitsu Hattori, Marika Odagaki, Kengo Nakajima, Toru Ishida
2008	C	`conf`	Parallel multistage preconditioners by Hierarchical Interface Decomposition on "T2K Open Super Computer (Todai Combined Cluster)" with Hybrid parallel programming models. CLUSTER Kengo Nakajima
2008	B	`conf`	Participatory Simulation Platform Using Network Games. PRIMA Shoichi Sawada, Hiromitsu Hattori, Marika Odagaki, Kengo Nakajima, Toru Ishida
2007	C	`conf`	Parallel Multistage Preconditioners Based on a Hierarchical Graph Decomposition for SMP Cluster Architectures with a Hybrid Parallel Programming Model. HPCC Kengo Nakajima
2007	Misc	`conf`	Parallel Preconditioning Methods with Selective Fill-Ins and Selective Overlapping for Ill-Conditioned Problems in Finite-Element Methods. International Conference on Computational Science (3) Kengo Nakajima
2006	—	`conf`	The Impact of Parallel Programming Models on the Performance of Iterative Linear Solvers for Finite Element Applications. VECPAR Kengo Nakajima
2005	J	`jnl`	Parallel iterative solvers for finite-element methods using an OpenMP/MPI hybrid programming model on the Earth Simulator. Parallel Comput. Kengo Nakajima
2004	J	`jnl`	Parallel iterative solvers with selective blocking preconditioning for simulations of fault-zone contact. Numer. Linear Algebra Appl. Kengo Nakajima, Hiroshi Okuda
2003	A	`conf`	Global and Localized Parallel Preconditioning Techniques for Large Scale Solid Earth Simulations. IPDPS Kai Wang, Sangbae Kim, Jun Zhang, Kengo Nakajima, Hiroshi Okuda
2003	J	`jnl`	Global and localized parallel preconditioning techniques for large scale solid Earth simulations. Future Gener. Comput. Syst. Kai Wang, Sangbae Kim, Jun Zhang, Kengo Nakajima, Hiroshi Okuda
2003	—	`conf`	OpenMP / MPI Hybrid vs. Flat MPI on the Earth Simulator: Parallel Iterative Solvers for Finite Element Method. ISHPC Kengo Nakajima
2003	J	`jnl`	Optimizing parallel performance of unstructured volume rendering for the Earth Simulator. Parallel Comput. Li Chen, Issei Fujishiro, Kengo Nakajima
2003	Misc	`conf`	Parallel Finite Element Analysis Platform for the Earth Simulator: GeoFEM. International Conference on Computational Science Hiroshi Okuda, Kengo Nakajima, Mikio Iizuka, Li Chen, Hisashi Nakamura
2003	A	`conf`	Parallel Iterative Solvers of GeoFEM with Selective Blocking Preconditioning for Nonlinear Contact Problems on the Earth Simulator. SC Kengo Nakajima
2002	—	`conf`	Parallel Iterative Solvers for Unstructured Grids Using an OpenMP/MPI Hybrid Programming Model for the GeoFEM Platform on SMP Cluster Architectures. ISHPC Kengo Nakajima, Hiroshi Okuda
2002	J	`jnl`	Parallel iterative solvers for unstructured grids using a directive/MPI hybrid programming model for the GeoFEM platform on SMP cluster architectures. Concurr. Comput. Pract. Exp. Kengo Nakajima, Hiroshi Okuda
2002	J	`jnl`	Parallel multilevel iterative linear solvers with unstructured adaptive grids for simulations in earth science. Concurr. Comput. Pract. Exp. Kengo Nakajima
2002	C	`conf`	Parallel performance optimization of large-scale unstructured data visualization for the earth simulator. EGPGV Li Chen, Issei Fujishiro, Kengo Nakajima
2001	—	`conf`	Parallel 3D Adaptive Compressible Navier-Stokes Solver in GeoFEM with Dynamic Load-Balancing by DRAMA Library. HPCN Europe Kengo Nakajima, Jochen Fingberg, Hiroshi Okuda
1999	—	`conf`	GeoFEM: High-Performance Parallel FEM for Geophysical Applications. ISHPC Mikio Iizuka, Hisashi Nakamura, Kazuteru Garatani, Kengo Nakajima, Hiroshi Okuda, Genki Yagawa
1998	—	`conf`	Highly Stable Localized ILU Preconditioning for Unstructured Grids. HPCN Europe Kengo Nakajima, Hisashi Nakamura, Hiroshi Okuda
1997	—	`conf`	Parallel Iterative Solvers with Localized ILU Preconditioning. HPCN Europe Kengo Nakajima, Hisashi Nakamura, Takahiko Tanahashi
1997	—	`conf`	Parallel Iterative Solvers with Localized ILU Preconditioning. Parallel CFD Kengo Nakajima, Hisashi Nakamura, Takahiko Tanahashi