Kohei Fujita

67 papers A 5C 3Misc 5Journal 17Unranked 37
YearRankTypeTitle / Venue / Authors
2025 J jnl
Fast and power efficient GPU-based explicit elastic wave propagation analysis by low-ordered orthogonal voxel finite element with INT8 Tensor Cores.
J. Comput. Sci.
Tsuyoshi Ichimura, Kohei Fujita, Muneo Hori, Maddegedara Lalith
2025 — conf
Generation of Quality Green's Function Libraries in Complex Three-Dimensional Crustal Structures by Adaptive Mesh Refinement.
ICCS (3)
Kai Nakao, Hideaki Ito, Tsuyoshi Ichimura, Kohei Fujita, Lalith Wijerathne, Muneo Hori
2025 — conf
Large-Scale Nonlinear Viscoelastic Simulation for Crustal Deformation Accelerated by Data-Driven Method and Multi-grid Solver.
ICCS (Workshops 1)
Sota Murakami, Kohei Fujita, Tsuyoshi Ichimura, Ryota Kaneko, Takane Hori, Muneo Hori, Maddegedara Lalith, Naonori Ueda
2025 — conf
Tetrahedral and Voxel Finite Elements with Orthogonal Discontinuous Basis Functions for Explicit Scalar Wave Propagation Analysis.
PASC
Kohei Fujita, Tsuyoshi Ichimura, Muneo Hori, Maddegedara Lalith, Mizuki Kusumoto
2024 — conf
Development of an Estimation Method for the Seismic Motion Reproducibility of a Three-Dimensional Ground Structure Model by Combining Surface-Observed Seismic Motion and Three-Dimensional Seismic Motion Analysis.
ICCS (3)
Tsuyoshi Ichimura, Kohei Fujita, Ryota Kusakabe, Hiroyuki Fujiwara, Muneo Hori, Maddegedara Lalith
2024 J jnl
Development of an Estimation Method for the Seismic Motion Reproducibility of a Three-dimensional Ground Structure Model by combining Surface-observed Seismic Motion and Three-dimensional Seismic Motion Analysis.
CoRR
Tsuyoshi Ichimura, Kohei Fujita, Ryota Kusakabe, Hiroyuki Fujiwara, Muneo Hori, Maddegedara Lalith
2024 — conf
Heterogeneous computing in a strongly-connected CPU-GPU environment: fast multiple time-evolution equation-based modeling accelerated using data-driven approach.
SC Workshops
Tsuyoshi Ichimura, Kohei Fujita, Muneo Hori, Lalith Maddegedara, Jack C. Wells, Alan Gray, Ian Karlin, John Linford
2024 J jnl
Heterogeneous computing in a strongly-connected CPU-GPU environment: fast multiple time-evolution equation-based modeling accelerated using data-driven approach.
CoRR
Tsuyoshi Ichimura, Kohei Fujita, Muneo Hori, Lalith Maddegedara, Jack C. Wells, Alan Gray, Ian Karlin, John Linford
2024 — conf
Increasing the Graspable Objects by Controlling the Errors in the Grasping Points of a Suction Pad Unit and Selecting an Optimal Hand.
SII
Ryuichi Miura, Kohei Fujita, Tsuyoshi Tasaki
2024 — conf
Low-Ordered Orthogonal Voxel Finite Element with INT8 Tensor Cores for GPU-Based Explicit Elastic Wave Propagation Analysis.
ICCS (3)
Tsuyoshi Ichimura, Kohei Fujita, Muneo Hori, Maddegedara Lalith
2024 J jnl
Low-ordered Orthogonal Voxel Finite Element with INT8 Tensor Cores for GPU-based Explicit Elastic Wave Propagation Analysis.
CoRR
Tsuyoshi Ichimura, Kohei Fujita, Muneo Hori, Maddegedara Lalith
2024 J jnl
Massively parallel Bayesian estimation with Sequential Monte Carlo sampling for simultaneous estimation of earthquake fault geometry and slip distribution.
J. Comput. Sci.
Kai Nakao, Tsuyoshi Ichimura, Kohei Fujita, Takane Hori, Tomokazu Kobayashi, Hiroshi Munekane
2024 — conf
Zero-Shot Pose Estimation Using Image Translation Maintaining Object Pose.
SII
Kohei Fujita, Tsuyoshi Tasaki
2023 — conf
A Novel Implicit Stress Integration Algorithm and its Verification Using von Mises and Drucker Prager Plasticity.
ICCMS
M. A. K. M. Dharmasiri, Maddegedara Lalith, Kohei Fujita, Tsuyoshi Ichimura, Muneo Hori
2023 J jnl
Calculation of cross-correlation function accelerated by TensorFloat-32 Tensor Core operations on NVIDIA's Ampere and Hopper GPUs.
J. Comput. Sci.
Kohei Fujita, Takuma Yamaguchi, Yuma Kikuchi, Tsuyoshi Ichimura, Muneo Hori, Lalith Maddegedara
2023 — conf
Development of 3D Viscoelastic Crustal Deformation Analysis Solver with Data-Driven Method on GPU.
ICCS (2)
Sota Murakami, Kohei Fujita, Tsuyoshi Ichimura, Takane Hori, Muneo Hori, Maddegedara Lalith, Naonori Ueda
2023 J jnl
PYNet: Poseclass and Yaw Angle Output Network for Object Pose Estimation.
J. Robotics Mechatronics
Kohei Fujita, Tsuyoshi Tasaki
2022 C conf
152K-computer-node parallel scalable implicit solver for dynamic nonlinear earthquake simulation.
HPC Asia
Tsuyoshi Ichimura, Kohei Fujita, Kentaro Koyama, Ryota Kusakabe, Yuma Kikuchi, Takane Hori, Muneo Hori, Lalith Maddegedara, Noriyuki Ohi, Tatsuo Nishiki, Hikaru Inoue, Kazuo Minami, Seiya Nishizawa, Miwako Tsuji, Naonori Ueda
2022 — conf
Calculation of Cross-correlation Function Accelerated by Tensor Cores with TensorFloat-32 Precision on Ampere GPU.
ICCS (1)
Yuma Kikuchi, Kohei Fujita, Tsuyoshi Ichimura, Muneo Hori, Lalith Maddegedara
2022 A conf
Extreme Scale Earthquake Simulation with Uncertainty Quantification.
SC
Tsuyoshi Ichimura, Kohei Fujita, Ryota Kusakabe, Kentaro Koyama, Sota Murakami, Yuma Kikuchi, Takane Hori, Muneo Hori, Hikaru Inoue, Takafumi Nose, Takahiro Kawashima, Maddegedara Lalith
2022 — conf
GPU-Accelerated Sparse Matrix Vector Product based on Element-by-Element Method for Unstructured FEM using OpenACC.
WACCPD@SC
Ryota Kusakabe, Kohei Fujita, Tsuyoshi Ichimura, Muneo Hori, Maddegedara Lalith
2022 J jnl
Optimal Control of Colored Timed Petri Nets Under Generalized Mutual Exclusion Temporal Constraints.
IEEE Access
Kohei Fujita, Toshimitsu Ushio
2022 J jnl
Optimal Control of Timed Petri Nets Under Temporal Logic Constraints with Generalized Mutual Exclusion.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Kohei Fujita, Toshimitsu Ushio
2022 — conf
Scalable Finite-Element Viscoelastic Crustal Deformation Analysis Accelerated with Data-Driven Method.
ScalAH@SC
Kohei Fujita, Sota Murakami, Tsuyoshi Ichimura, Takane Hori, Muneo Hori, Maddegedara Lalith, Naonori Ueda
2022 J jnl
Scalable large-scale multi-physics earthquake simulation on multiple GPUs with stabilization.
J. Comput. Sci.
Ryota Kusakabe, Tsuyoshi Ichimura, Kohei Fujita, Muneo Hori, Lalith Wijerathne
2021 — conf
Fast scalable implicit solver with convergence of equation-based modeling and data-driven learning: earthquake city simulation on low-order unstructured finite element.
PASC
Tsuyoshi Ichimura, Kohei Fujita, Kentaro Koyama, Yuma Kikuchi, Ryota Kusakabe, Kazuo Minami, Hikaru Inoue, Seiya Nishizawa, Miwako Tsuji, Tatsuo Nishiki, Muneo Hori, Lalith Maddegedara, Naonori Ueda
2021 — conf
GPU Porting of Scalable Implicit Solver with Green's Function-Based Neural Networks by OpenACC.
WACCPD@SC
Kohei Fujita, Yuma Kikuchi, Tsuyoshi Ichimura, Muneo Hori, Lalith Maddegedara, Naonori Ueda
2021 J jnl
High-Performance Computing Implementations of Agent-Based Economic Models for Realizing 1: 1 Scale Simulations of Large Economies.
IEEE Trans. Parallel Distributed Syst.
Amit Gill, Lalith Maddegedara, Sebastian Poledna, Muneo Hori, Kohei Fujita, Tsuyoshi Ichimura
2021 J jnl
High-fidelity nonlinear low-order unstructured implicit finite-element seismic simulation of important structures by accelerated element-by-element method.
J. Comput. Sci.
Kohei Fujita, Kentaro Koyama, Kazuo Minami, Hikaru Inoue, Seiya Nishizawa, Miwako Tsuji, Tatsuo Nishiki, Tsuyoshi Ichimura, Muneo Hori, Lalith Maddegedara
2021 — conf
Large-Scale Stabilized Multi-physics Earthquake Simulation for Digital Twin.
ICCS (2)
Ryota Kusakabe, Tsuyoshi Ichimura, Kohei Fujita, Muneo Hori, Lalith Wijerathne
2021 — conf
Performance Improvement of User Verification Using Intra-Palm Propagation Signals.
ISCIT
Tomoaki Oku, Kohei Fujita, Isao Nakanishi
2021 — conf
Seamless Simulations of Earthquake Disasters and Economy at 1: 1 scale Utilizing Big-data.
WI/IAT (Workshop/Special Session)
Amit Gill, Maddegedara Lalith, Yoshiki Ogawa, Hideyuki O.-tani, Tsuyoshi Ichimura, Kohei Fujita, Filippo Gatti, Muneo Hori
2020 — conf
A Fast Scalable Iterative Implicit Solver with Green's function-based Neural Networks.
ScalA@SC
Tsuyoshi Ichimura, Kohei Fujita, Muneo Hori, Lalith Maddegedara, Naonori Ueda, Yuma Kikuchi
2020 — conf
Data Assimilation in Volcano Deformation Using Fast Finite Element Analysis with High Fidelity Model.
ICCS (3)
Sota Murakami, Takuma Yamaguchi, Kohei Fujita, Tsuyoshi Ichimura, Maddegedara Lalith, Muneo Hori
2020 — conf
Data-Driven Approach to Inversion Analysis of Three-Dimensional Inner Soil Structure via Wave Propagation Analysis.
ICCS (3)
Takuma Yamaguchi, Tsuyoshi Ichimura, Kohei Fujita, Muneo Hori, Lalith Wijerathne, Naonori Ueda
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 — conf
Fast Multi-Step Optimization with Deep Learning for Data-Centric Supercomputing.
HP3C
Tsuyoshi Ichimura, Kohei Fujita, Takuma Yamaguchi, Muneo Hori, Lalith Wijerathne, Naonori Ueda
2020 — conf
Low-Order Finite Element Solver with Small Matrix-Matrix Multiplication Accelerated by AI-Specific Hardware for Crustal Deformation Computation.
PASC
Takuma Yamaguchi, Kohei Fujita, Tsuyoshi Ichimura, Akira Naruse, Jack C. Wells, Christopher Zimmer, Tjerk P. Straatsma, Muneo Hori, Lalith Maddegedara, Naonori Ueda
2020 — conf
Person Verification Using Intra-Palm Propagation Signals with A New Phase Spectrum.
KST
Kohei Fujita, Yuya Ishimoto, Isao Nakanishi
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
2020 J jnl
Vision-Based Building Seismic Displacement Measurement by Stratification of Projective Rectification Using Lines.
Sensors
Jia Guo, Yang Xiang, Kohei Fujita, Izuru Takewaki
2019 — conf
A Fast 3D Finite-Element Solver for Large-Scale Seismic Soil Liquefaction Analysis.
ICCS (2)
Ryota Kusakabe, Kohei Fujita, Tsuyoshi Ichimura, Muneo Hori, Lalith Wijerathne
2019 J jnl
Acceleration of unstructured implicit low-order finite-element earthquake simulation using OpenACC on Pascal GPUs.
Int. J. High Perform. Comput. Netw.
Takuma Yamaguchi, Kohei Fujita, Tsuyoshi Ichimura, Muneo Hori, Lalith Maddegedara
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
GPU Implementation of a Sophisticated Implicit Low-Order Finite Element Solver with FP21-32-64 Computation Using OpenACC.
WACCPD@SC
Takuma Yamaguchi, Kohei Fujita, Tsuyoshi Ichimura, Akira Naruse, Lalith Maddegedara, Muneo Hori
2019 — conf
Heuristic Optimization with CPU-GPU Heterogeneous Wave Computing for Estimating Three-Dimensional Inner Structure.
ICCS (2)
Takuma Yamaguchi, Tsuyoshi Ichimura, Kohei Fujita, Muneo Hori, Lalith Wijerathne
2019 J jnl
Matched Filtering Accelerated by Tensor Cores on Volta GPUs With Improved Accuracy Using Half-Precision Variables.
IEEE Signal Process. Lett.
Takuma Yamaguchi, Tsuyoshi Ichimura, Kohei Fujita, Aitaro Kato, Shigeki Nakagawa
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
Balanced Graph Partition Refinement using the Graph p-Laplacian.
PASC
Toby Simpson, Dimosthenis Pasadakis, Drosos Kourounis, Kohei Fujita, Takuma Yamaguchi, Tsuyoshi Ichimura, Olaf Schenk
2018 — conf
Development of Octree-Based High-Quality Mesh Generation Method for Biomedical Simulation.
ICCS (2)
Keisuke Katsushima, Kohei Fujita, Tsuyoshi Ichimura, Muneo Hori, Lalith Maddegedara
2018 — conf
Development of Scalable Three-Dimensional Elasto-Plastic Nonlinear Wave Propagation Analysis Method for Earthquake Damage Estimation of Soft Grounds.
ICCS (2)
Atsushi Yoshiyuki, Kohei Fujita, Tsuyoshi Ichimura, Muneo Hori, Lalith Wijerathne
2018 — conf
Viscoelastic Crustal Deformation Computation Method with Reduced Random Memory Accesses for GPU-Based Computers.
ICCS (2)
Takuma Yamaguchi, Kohei Fujita, Tsuyoshi Ichimura, Anne Glerum, Ylona van Dinther, Takane Hori, Olaf Schenk, Muneo Hori, Lalith Wijerathne
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 Misc conf
Fast Finite Element Analysis Method Using Multiple GPUs for Crustal Deformation and its Application to Stochastic Inversion Analysis with Geometry Uncertainty.
ICCS
Takuma Yamaguchi, Kohei Fujita, Tsuyoshi Ichimura, Takane Hori, Muneo Hori, Lalith Wijerathne
2017 — conf
Fast and Scalable Low-Order Implicit Unstructured Finite-Element Solver for Earth's Crust Deformation Problem.
PASC
Kohei Fujita, Tsuyoshi Ichimura, Kentaro Koyama, Hikaru Inoue, Muneo Hori, Lalith Maddegedara
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
2016 — conf
Acceleration of Element-by-Element Kernel in Unstructured Implicit Low-Order Finite-Element Earthquake Simulation Using OpenACC on Pascal GPUs.
WACCPD@SC
Kohei Fujita, Takuma Yamaguchi, Tsuyoshi Ichimura, Muneo Hori, Lalith Maddegedara
2016 — conf
Dynamic event-triggered minimal-order observer for linear systems.
EBCCSP
Kenichi Fukuda, Kohei Fujita, Toshimitsu Ushio
2016 Misc conf
Octree-Based Multiple-Material Parallel Unstructured Mesh Generation Method for Seismic Response Analysis of Soil-Structure Systems.
ICCS
Kohei Fujita, Keisuke Katsushima, Tsuyoshi Ichimura, Muneo Hori, Lalith Maddegedara
2015 — conf
Distributed event-triggered output feedback control with cloud-assisted observer.
EBCCSP
Kohei Fujita, Toshimitsu Ushio
2015 A conf
Implicit nonlinear wave simulation with 1.08T DOF and 0.270T unstructured finite elements to enhance comprehensive earthquake simulation.
SC
Tsuyoshi Ichimura, Kohei Fujita, Pher Errol Balde Quinay, Lalith Maddegedara, Muneo Hori, Seizo Tanaka, Yoshihisa Shizawa, Hiroshi Kobayashi, Kazuo Minami
2015 Misc conf
Scalable Multicase Urban Earthquake Simulation Method for Stochastic Earthquake Disaster Estimation.
ICCS
Kohei Fujita, Tsuyoshi Ichimura, Muneo Hori, Wijerathne Maddegedara Lalith Lakshman, Seizo Tanaka
2014 Misc conf
A Physics-based Monte Carlo Earthquake Disaster Simulation Accounting for Uncertainty in Building Structure Parameters.
ICCS
Shunsuke Homma, Kohei Fujita, Tsuyoshi Ichimura, Muneo Hori, Seckin Citak, Takane Hori
2014 Misc conf
A Quick Earthquake Disaster Estimation System with Fast Urban Earthquake Simulation and Interactive Visualization.
ICCS
Kohei Fujita, Tsuyoshi Ichimura, Muneo Hori, M. L. L. Wijerathne, Seizo Tanaka
2014 A conf
Physics-Based Urban Earthquake Simulation Enhanced by 10.7 BlnDOF × 30 K Time-Step Unstructured FE Non-Linear Seismic Wave Simulation.
SC
Tsuyoshi Ichimura, Kohei Fujita, Seizo Tanaka, Muneo Hori, Wijerathne Maddegedara Lalith Lakshman, Yoshihisa Shizawa, Hiroshi Kobayashi