Kengo Nakajima

Publication Activity (10 Years)

Years Active: 1997-2024
Publications (10 Years): 39

Top Topics

Parallel Algorithm

Computationally Expensive

Material Properties

Top Venues

HPC Asia Workshops

Publications

Takahiro Katagiri, Takao Sakurai, Mitsuyoshi Igai, Shoji Itoh, Satoshi Ohshima, Hisayasu Kuroda, Ken Naono, Kengo Nakajima
Xabclib:A Fully Auto-tuned Sparse Iterative Solver. CoRR (2024)
Shinji Sumimoto, Toshihiro Hanawa, Kengo Nakajima
MPI-Adapter2: An Automatic ABI Translation Library Builder for MPI Application Binary Portability. HPC Asia Workshops (2024)
Yen-Chen Chen, Kengo Nakajima
A Cascadic Parareal Method for Parallel-in-Time Simulation of Compressible Supersonic Flow. J. Inf. Process. 32 (2024)
Kengo Nakajima
Communication-Computation Overlapping for Parallel Multigrid Methods. IPDPS (Workshops) (2024)
Akihiro Fujii, Teruo Tanaka, Kengo Nakajima
Light Weight Coarse Grid Aggregation for Smoothed Aggregation Algebraic Multigrid Solver. IEEE Access 12 (2024)
Masatoshi Kawai, Akihiro Ida, Toshihiro Hanawa, Kengo Nakajima
Dynamic Core Binding for Load Balancing of Applications Parallelized with MPI/OpenMP. ICCS (3) (2023)
Ryo Yoda, Matthias Bolten, Kengo Nakajima, Akihiro Fujii
Acceleration of Optimized Coarse-Grid Operators by Spatial Redistribution for Multigrid Reduction in Time. ICCS (1) (2022)
Masashi Horikoshi, Balazs Gerofi, Yutaka Ishikawa, Kengo Nakajima
Exploring Communication-Computation Overlap in Parallel Iterative Solvers on Manycore CPUs using Asynchronous Progress Control. HPC Asia Workshops (2022)
Shinji Sumimoto, Toshihiro Hanawa, Kengo Nakajima
A Process Management Runtime with Dynamic Reconfiguration. HPC Asia Workshops (2022)
Masatoshi Kawai, Kengo Nakajima
Low/Adaptive Precision Computation in Preconditioned Iterative Solvers for Ill-Conditioned Problems. HPC Asia (2022)
Takashi Arakawa, Hisashi Yashiro, Kengo Nakajima
Development of a coupler h3-Open-UTIL/MP. HPC Asia (2022)
Shinji Sumimoto, Takashi Arakawa, Yoshio Sakaguchi, Hiroya Matsuba, Hisashi Yashiro, Toshihiro Hanawa, Kengo Nakajima
A System-Wide Communication to Couple Multiple MPI Programs for Heterogeneous Computing. PDCAT (2022)
Kengo Nakajima, Balazs Gerofi, Masashi Horikoshi, Yutaka Ishikawa
Communication-Computation Overlapping for Preconditioned Parallel Iterative Solvers with Dynamic Loop Scheduling. HPC Asia Workshops (2022)
Ryo Yoda, Matthias Bolten, Kengo Nakajima, Akihiro Fujii
Assignment of idle processors to spatial redistributed domains on coarse levels in multigrid reduction in time. HPC Asia (2022)
Sadaf R. Alam, Lois Curfman McInnes, Kengo Nakajima
IEEE Special Issue on Innovative R&D Toward the Exascale Era. IEEE Trans. Parallel Distributed Syst. 33 (4) (2022)
Yen-Chen Chen, Kengo Nakajima
Optimized Cascadic Multigrid Parareal Method for Explicit Time-Marching Schemes. ScalA@SC (2021)
Kengo Nakajima, Takeshi Ogita, Masatoshi Kawai
Efficient Parallel Multigrid Methods on Manycore Clusters with Double/Single Precision Computing. IPDPS Workshops (2021)
Ryuichi Sakamoto, Masaaki Kondo, Kohei Fujita, Tsuyoshi Ichimura, Kengo Nakajima
The Effectiveness of Low-Precision Floating Arithmetic on Numerical Codes: A Case Study on Power Consumption. HPC Asia (2020)
Masatoshi Kawai, Akihiro Ida, Hiroya Matsuba, Kengo Nakajima, Matthias Bolten
Multiplicative Schwartz-Type Block Multi-Color Gauss-Seidel Smoother for Algebraic Multigrid Methods. HPC Asia (2020)
Kohei Fujita, Masashi Horikoshi, Tsuyoshi Ichimura, Larry Meadows, Kengo Nakajima, Muneo Hori, Lalith Maddegedara
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. 45 (2020)
Kengo Nakajima, Balazs Gerofi, Yutaka Ishikawa, Masashi Horikoshi
Parallel Multigrid Methods on Manycore Clusters with IHK/McKernel. ScalA@SC (2019)
Kohei Fujita, Masashi Horikoshi, Tsuyoshi Ichimura, Larry Meadows, Kengo Nakajima, Muneo Hori, Lalith Maddegedara
Development of Element-by-Element Kernel Algorithms in Unstructured Implicit Low-Order Finite-Element Earthquake Simulation for Many-Core Wide-SIMD CPUs. ICCS (1) (2019)
Chad Jarvis, Glenn Terje Lines, Johannes Langguth, Kengo Nakajima, Xing Cai
Combining Algorithmic Rethinking and AVX-512 Intrinsics for Efficient Simulation of Subcellular Calcium Signaling. ICCS (5) (2019)
Moritz Kreutzer, Dominik Ernst, Alan R. Bishop, Holger Fehske, Georg Hager, Kengo Nakajima, Gerhard Wellein
Chebyshev Filter Diagonalization on Modern Manycore Processors and GPGPUs. ISC (2018)
Balazs Gerofi, Rolf Riesen, Masamichi Takagi, Taisuke Boku, Kengo Nakajima, Yutaka Ishikawa, Robert W. Wisniewski
Performance and Scalability of Lightweight Multi-kernel Based Operating Systems. IPDPS (2018)
Tetsuya Hoshino, Akihiro Ida, Toshihiro Hanawa, Kengo Nakajima
Load-Balancing-Aware Parallel Algorithms of H-Matrices with Adaptive Cross Approximation for GPUs. CLUSTER (2018)
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
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 (2018)
Naoya Nomura, Akihiro Fujii, Teruo Tanaka, Osni Marques, Kengo Nakajima
Algebraic Multigrid Solver Using Coarse Grid Aggregation with Independent Aggregation. IPDPS Workshops (2018)
Kohei Fujita, Keisuke Katsushima, Tsuyoshi Ichimura, Masashi Horikoshi, Kengo Nakajima, Muneo Hori, Lalith Maddegedara
Wave Propagation Simulation of Complex Multi-Material Problems with Fast Low-Order Unstructured Finite-Element Meshing and Analysis. HPC Asia (2018)
Tetsuya Hoshino, Akihiro Ida, Toshihiro Hanawa, Kengo Nakajima
Design of Parallel BEM Analyses Framework for SIMD Processors. ICCS (1) (2018)
Tsuyoshi Ichimura, Kohei Fujita, Masashi Horikoshi, Larry Meadows, Kengo Nakajima, Takuma Yamaguchi, Kentaro Koyama, Hikaru Inoue, Akira Naruse, Keisuke Katsushima, Muneo Hori, Lalith Maddegedara
A Fast Scalable Implicit Solver with Concentrated Computation for Nonlinear Time-Evolution Problems on Low-Order Unstructured Finite Elements. IPDPS (2018)
Kengo Nakajima, Toshihiro Hanawa
Communication-Computation Overlapping with Dynamic Loop Scheduling for Preconditioned Parallel Iterative Solvers on Multicore and Manycore Clusters. ICPP Workshops (2017)
Takuma Yamaguchi, Kohei Fujita, Tsuyoshi Ichimura, Muneo Hori, Lalith Maddegedara, Kengo Nakajima
Implicit Low-Order Unstructured Finite-Element Multiple Simulation Enhanced by Dense Computation Using OpenACC. WACCPD@SC (2017)
Takuma Yamaguchi, Kohei Fujita, Tsuyoshi Ichimura, Muneo Hori, Lalith Maddegedara, Kengo Nakajima
Implicit Low-Order Unstructured Finite-Element Multiple Simulation Enhanced by Dense Computation using OpenACC. CoRR (2017)
Kengo Nakajima, Kengo Kunishige, Futoshi Kuroki, Yasushi Hamada, Masaki Numoto
Low-profile and small-sized spiral-shaped microstrip line antenna with multi-band operation in UHF frequency band. RWS (2017)
Masatoshi Kawai, Akihiro Ida, Kengo Nakajima
Hierarchical Parallelization of Multi-coloring Algorithms for Block IC Preconditioners. HPCC/SmartCity/DSS (2017)
Naoya Nomura, Akihiro Fujii, Teruo Tanaka, Kengo Nakajima, Osni Marques
Performance Analysis of SA-AMG Method by Setting Extracted Near-Kernel Vectors. VECPAR (2016)
Kengo Nakajima
Parallel Iterative Solvers for Ill-conditioned Problems with Heterogeneous Material Properties. ICCS (2016)
Satoshi Matsuoka, Hideharu Amano, Kengo Nakajima, Koji Inoue, Tomohiro Kudoh, Naoya Maruyama, Kenjiro Taura, Takeshi Iwashita, Takahiro Katagiri, Toshihiro Hanawa, Toshio Endo
From FLOPS to BYTES: disruptive change in high-performance computing towards the post-moore era. Conf. Computing Frontiers (2016)
Masaharu Matsumoto, Takashi Arakawa, Takeshi Kitayama, Futoshi Mori, Hiroshi Okuda, Takashi Furumura, Kengo Nakajima
Multi-scale Coupling Simulation of Seismic Waves and Building Vibrations Using ppOpen-HPC. ICCS (2015)
Masaharu Matsumoto, Futoshi Mori, Satoshi Ohshima, Hideyuki Jitsumoto, Takahiro Katagiri, Kengo Nakajima
Implementation and Evaluation of an AMR Framework for FDM Applications. ICCS (2014)
Kengo Nakajima
Optimization of serial and parallel communications for parallel geometric multigrid method. ICPADS (2014)
Satoshi Ohshima, Masae Hayashi, Takahiro Katagiri, Kengo Nakajima
Implementation and Evaluation of 3D Finite Element Method Application for CUDA. VECPAR (2012)
Masae Hayashi, Kengo Nakajima
OpenMP/MPI Hybrid Parallel ILU(k) Preconditioner for FEM Based on Extended Hierarchical Interface Decomposition for Multi-core Clusters. VECPAR (2012)
Kengo Nakajima
New strategy for coarse grid solvers in parallel multigrid methods using OpenMP/MPI hybrid programming models. PMAM (2012)
Yutaka Ishikawa, Kengo Nakajima, Atsushi Hori
Revisiting Persistent Communication in MPI. EuroMPI (2012)
Kengo Nakajima
OpenMP/MPI Hybrid Parallel Multigrid Method on Fujitsu FX10 Supercomputer System. CLUSTER Workshops (2012)
Thomas Ludwig, Costas Bekas, Alice Koniges, Kengo Nakajima
Topic 15: High Performance and Scientific Applications. Euro-Par (2012)
Kengo Nakajima
Automatic Tuning of Parallel Multigrid Solvers Using OpenMP/MPI Hybrid Parallel Programming Models. VECPAR (2012)
Hajime Yamamoto, Shinichi Nanai, Keni Zhang, Pascal Audigane, Christophe Chiaberge, Ryusei Ogata, Noriaki Nishikawa, Yuichi Hirokawa, Satoru Shingu, Kengo Nakajima
Stored in Deep Reservoir Rocks on Massively Parallel Vector Supercomputer. VECPAR (2012)
Takahiro Katagiri, Takao Sakurai, Mitsuyoshi Igai, Satoshi Ohshima, Hisayasu Kuroda, Ken Naono, Kengo Nakajima
Control Formats for Unsymmetric and Symmetric Sparse Matrix-Vector Multiplications on OpenMP Implementations. VECPAR (2012)
Takashi Furumura, Kengo Nakajima, Masaki Satoh
First International Workshop on Advances in High-Performance Computational Earth Sciences: Applications and Frameworks (IHPCES). ICCS (2011)
Olivier Coulaud, Kengo Nakajima, Esmond G. Ng, Mariano Vázquez
Introduction. Euro-Par (2) (2011)
Akira Hosoi, Takumi Washio, Jun-ichi Okada, Yoshimasa Kadooka, Kengo Nakajima, Toshiaki Hisada
A Multi-Scale Heart Simulation on Massively Parallel Computers. SC (2010)
Kengo Nakajima
Parallel Multigrid Solvers Using OpenMP/MPI Hybrid Programming Models on Multi-Core/Multi-Socket Clusters. VECPAR (2010)
Shohei Yamane, Shoichi Sawada, Hiromitsu Hattori, Marika Odagaki, Kengo Nakajima, Toru Ishida
Participatory Simulation Environment gumonji/Q: A Network Game Empowered by Agents. PRIMA (2009)
Kengo Nakajima
Parallel Multistage Preconditioners by Extended Hierarchical Interface Decomposition for Ill-Conditioned Problems. PARCO (2009)
Kengo Nakajima
Flat MPI vs. Hybrid: Evaluation of Parallel Programming Models for Preconditioned Iterative Solvers on . ICPP Workshops (2009)
Shoichi Sawada, Hiromitsu Hattori, Marika Odagaki, Kengo Nakajima, Toru Ishida
Participatory Simulation Platform Using Network Games. PRIMA (2008)
Kengo Nakajima
Parallel multistage preconditioners by Hierarchical Interface Decomposition on "T2K Open Super Computer (Todai Combined Cluster)" with Hybrid parallel programming models. CLUSTER (2008)
Kengo Nakajima
Parallel Preconditioning Methods with Selective Fill-Ins and Selective Overlapping for Ill-Conditioned Problems in Finite-Element Methods. International Conference on Computational Science (3) (2007)
Kengo Nakajima
Parallel Multistage Preconditioners Based on a Hierarchical Graph Decomposition for SMP Cluster Architectures with a Hybrid Parallel Programming Model. HPCC (2007)
Kengo Nakajima
The Impact of Parallel Programming Models on the Performance of Iterative Linear Solvers for Finite Element Applications. VECPAR (2006)
Kengo Nakajima
Parallel iterative solvers for finite-element methods using an OpenMP/MPI hybrid programming model on the Earth Simulator. Parallel Comput. 31 (10-12) (2005)
Kengo Nakajima, Hiroshi Okuda
Parallel iterative solvers with selective blocking preconditioning for simulations of fault-zone contact. Numer. Linear Algebra Appl. 11 (8-9) (2004)
Kengo Nakajima
OpenMP / MPI Hybrid vs. Flat MPI on the Earth Simulator: Parallel Iterative Solvers for Finite Element Method. ISHPC (2003)
Hiroshi Okuda, Kengo Nakajima, Mikio Iizuka, Li Chen, Hisashi Nakamura
Parallel Finite Element Analysis Platform for the Earth Simulator: GeoFEM. International Conference on Computational Science (2003)
Kengo Nakajima
Parallel Iterative Solvers of GeoFEM with Selective Blocking Preconditioning for Nonlinear Contact Problems on the Earth Simulator. SC (2003)
Kai Wang, Sangbae Kim, Jun Zhang, Kengo Nakajima, Hiroshi Okuda
Global and Localized Parallel Preconditioning Techniques for Large Scale Solid Earth Simulations. IPDPS (2003)
Kai Wang, Sangbae Kim, Jun Zhang, Kengo Nakajima, Hiroshi Okuda
Global and localized parallel preconditioning techniques for large scale solid Earth simulations. Future Gener. Comput. Syst. 19 (4) (2003)
Li Chen, Issei Fujishiro, Kengo Nakajima
Optimizing parallel performance of unstructured volume rendering for the Earth Simulator. Parallel Comput. 29 (3) (2003)
Kengo Nakajima, Hiroshi Okuda
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. 14 (6-7) (2002)
Kengo Nakajima
Parallel multilevel iterative linear solvers with unstructured adaptive grids for simulations in earth science. Concurr. Comput. Pract. Exp. 14 (6-7) (2002)
Li Chen, Issei Fujishiro, Kengo Nakajima
Parallel performance optimization of large-scale unstructured data visualization for the earth simulator. EGPGV (2002)
Kengo Nakajima, Hiroshi Okuda
Parallel Iterative Solvers for Unstructured Grids Using an OpenMP/MPI Hybrid Programming Model for the GeoFEM Platform on SMP Cluster Architectures. ISHPC (2002)
Kengo Nakajima, Jochen Fingberg, Hiroshi Okuda
Parallel 3D Adaptive Compressible Navier-Stokes Solver in GeoFEM with Dynamic Load-Balancing by DRAMA Library. HPCN Europe (2001)
Mikio Iizuka, Hisashi Nakamura, Kazuteru Garatani, Kengo Nakajima, Hiroshi Okuda, Genki Yagawa
GeoFEM: High-Performance Parallel FEM for Geophysical Applications. ISHPC (1999)
Kengo Nakajima, Hisashi Nakamura, Hiroshi Okuda
Highly Stable Localized ILU Preconditioning for Unstructured Grids. HPCN Europe (1998)
Kengo Nakajima, Hisashi Nakamura, Takahiko Tanahashi
Parallel Iterative Solvers with Localized ILU Preconditioning. HPCN Europe (1997)
Kengo Nakajima, Hisashi Nakamura, Takahiko Tanahashi
Parallel Iterative Solvers with Localized ILU Preconditioning. Parallel CFD (1997)