Kazuhiko Komatsu

According to our database, Kazuhiko Komatsu authored at least 72 papers between 1987 and 2025.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2025

Performance Evaluation of Vector Annealing on Multiple Nodes Using the Traveling Salesperson Problem.

Makoto Onoda, Kazuhiko Komatsu, Kotaro Bannai, Shintaro Momose, Masayuki Sato, Hiroaki Kobayashi

Proceedings of the ISC High Performance 2025 Research Paper Proceedings (40th International Conference), 2025

A Compressed QUBO Format for Traveling Salesperson Problems.

Chu-Yuan Huang, Kazuhiko Komatsu, Makoto Onoda, Masahito Kumagai, Masayuki Sato, Hiroaki Kobayashi

Proceedings of the 2025 IEEE International Parallel and Distributed Processing Symposium, 2025

2024

An Ising-based Decision Method for Intra Prediction Mode in Video Coding.

Takuto Momominami, Naoya Niwa, Masahito Kumagai, Kazuhiko Komatsu, Hiroaki Kobayashi, Hiroe Iwasaki

Proceedings of the SC24-W: Workshops of the International Conference for High Performance Computing, 2024

An Asymptotic Parallel Linear Solver and Its Application to Direct Numerical Simulation for Compressible Turbulence.

Mitsuo Yokokawa, Taiki Matsumoto, Ryo Takegami, Yukiya Sugiura, Naoki Watanabe, Yoshiki Sakurai, Takashi Ishihara, Kazuhiko Komatsu, Hiroaki Kobayashi

Proceedings of the Computational Science - ICCS 2024, 2024

File I/O Cache Performance of Supercomputer Fugaku Using an Out-of-Core Direct Numerical Simulation Code of Turbulence.

Yuto Hatanaka, Yuki Yamane, Kenta Yamaguchi, Takashi Soga, Akihiro Musa, Takashi Ishihara, Atsuya Uno, Kazuhiko Komatsu, Hiroaki Kobayashi, Mitsuo Yokokawa

Proceedings of the Computational Science - ICCS 2024, 2024

Adaptive Parallelization based on Frame-level and Tile-level Parallelisms for VVC Encoding.

Karin Onouchi, Masayuki Sato, Hiroe Iwasaki, Kazuhiko Komatsu, Hiroaki Kobayashi

Proceedings of the Twelfth International Symposium on Computing and Networking, 2024

A Graph-based Molecular Structure Identification Method via Feature Extraction for Three-dimensional Electron Diffraction Data.

Yusuke Fukasawa, Kazuhiko Komatsu, Masayuki Sato, Saori Maki-Yonekura, Hirofumi Kurokawa, Koji Yonekura, Hiroaki Kobayashi

Proceedings of the Twelfth International Symposium on Computing and Networking, CANDAR 2024, 2024

2023

Ising-Based Kernel Clustering.

Masahito Kumagai, Kazuhiko Komatsu, Masayuki Sato, Hiroaki Kobayashi

Algorithms, April, 2023

A dynamic parameter tuning method for SpMM parallel execution.

Bin Qi, Kazuhiko Komatsu, Masayuki Sato, Hiroaki Kobayashi

Concurr. Comput. Pract. Exp., 2023

Investigating the Characteristics of Ising Machines.

Kazuhiko Komatsu, Makoto Onoda, Masahito Kumagai, Hiroaki Kobayashi

Proceedings of the IEEE International Conference on Quantum Computing and Engineering, 2023

A Constraint Partition Method for Combinatorial Optimization Problems.

Makoto Onoda, Kazuhiko Komatsu, Masahito Kumagai, Masayuki Sato, Hiroaki Kobayashi

Proceedings of the 16th IEEE International Symposium on Embedded Multicore/Many-core Systems-on-Chip, 2023

Appropriate Graph-Algorithm Selection for Edge Devices Using Machine Learning.

Yusuke Fukasawa, Kazuhiko Komatsu, Masayuki Sato, Hiroaki Kobayashi

Proceedings of the 16th IEEE International Symposium on Embedded Multicore/Many-core Systems-on-Chip, 2023

I/O Performance Evaluation of a Memory-Saving DNS Code on SX-Aurora TSUBASA.

Mitsuo Yokokawa, Yuki Yamane, Kenta Yamaguchi, Takashi Soga, Taiki Matsumoto, Akihiro Musa, Kazuhiko Komatsu, Takashi Ishihara, Hiroaki Kobayashi

Proceedings of the IEEE International Parallel and Distributed Processing Symposium, 2023

Multi-scale Loss based Electron Microscopic Image Pair Matching Method.

Chunting Duan, Kazuhiko Komatsu, Masayuki Sato, Hiroaki Kobayashi

Proceedings of the International Conference on Machine Learning and Applications, 2023

Performance Evaluation of Tsunami Evacuation Route Planning on Multiple Annealing Machines.

Yihui Liu, Kazuhiko Komatsu, Masahito Kumagai, Masayuki Sato, Hiroaki Kobayashi

Proceedings of the 20th ACM International Conference on Computing Frontiers, 2023

2022

Page-Address Coalescing of Vector Gather Instructions for Efficient Address Translation.

Hikaru Takayashiki, Masayuki Sato, Kazuhiko Komatsu, Hiroaki Kobayashi

Proceedings of the 12th IEEE/ACM Workshop on Irregular Applications: Architectures and Algorithms, 2022

A Partitioned Memory Architecture with Prefetching for Efficient Video Encoders.

Masayuki Sato, Yuya Omori, Ryusuke Egawa, Ken Nakamura, Daisuke Kobayashi, Hiroe Iwasaki, Kazuhiko Komatsu, Hiroaki Kobayashi

Proceedings of the Parallel and Distributed Computing, Applications and Technologies, 2022

Analysis of Precision Vectors for Ising-Based Linear Regression.

Kaho Aoyama, Kazuhiko Komatsu, Masahito Kumagai, Hiroaki Kobayashi

Proceedings of the Parallel and Distributed Computing, Applications and Technologies, 2022

High-Performance GraphBLAS Backend Prototype for NEC SX-Aurora TSUBASA.

Ilya V. Afanasyev, Kazuhiko Komatsu, Dmitry I. Lichmanov, Vadim V. Voevodin, Hiroaki Kobayashi

Proceedings of the IEEE International Parallel and Distributed Processing Symposium, 2022

2021

VGL: a high-performance graph processing framework for the NEC SX-Aurora TSUBASA vector architecture.

Ilya V. Afanasyev, Vladimir V. Voevodin, Kazuhiko Komatsu, Hiroaki Kobayashi

J. Supercomput., 2021

Optimizing Load Balance in a Parallel CFD Code for a Large-scale Turbine Simulation on a Vector Supercomputer.

Osamu Watanabe, Kazuhiko Komatsu, Masayuki Sato, Hiroaki Kobayashi

Supercomput. Front. Innov., 2021

Performance and Power Analysis of a Vector Computing System.

Kazuhiko Komatsu, Akito Onodera, Erich Focht, Soya Fujimoto, Yoko Isobe, Shintaro Momose, Masayuki Sato, Hiroaki Kobayashi

Supercomput. Front. Innov., 2021

Distributed Graph Algorithms for Multiple Vector Engines of NEC SX-Aurora TSUBASA Systems.

Ilya V. Afanasyev, Vadim V. Voevodin, Kazuhiko Komatsu, Hiroaki Kobayashi

Supercomput. Front. Innov., 2021

Efficient Mixed-Precision Tall-and-Skinny Matrix-Matrix Multiplication for GPUs.

Hao Tang, Kazuhiko Komatsu, Masayuki Sato, Hiroaki Kobayashi

Int. J. Netw. Comput., 2021

An External Definition of the One-Hot Constraint and Fast QUBO Generation for High-Performance Combinatorial Clustering.

Masahito Kumagai, Kazuhiko Komatsu, Fumiyo Takano, Takuya Araki, Masayuki Sato, Hiroaki Kobayashi

Int. J. Netw. Comput., 2021

Register Flush-free Runahead Execution for Modern Vector Processors.

Hikaru Takayashiki, Masayuki Sato, Kazuhiko Komatsu, Hiroaki Kobayashi

Proceedings of the 33rd IEEE International Symposium on Computer Architecture and High Performance Computing, 2021

Optimizations of a Linear Matrix Solver in a Composite Simulation for a Vector Computer.

Zhilin He, Kazuhiko Komatsu, Masayuki Sato, Hiroaki Kobayashi

Proceedings of the 12th International Symposium on Parallel Architectures, 2021

Ising-Based Combinatorial Clustering Using the Kernel Method.

Masahito Kumagai, Kazuhiko Komatsu, Masayuki Sato, Hiroaki Kobayashi

Proceedings of the 14th IEEE International Symposium on Embedded Multicore/Many-core Systems-on-Chip, 2021

A Processor Selection Method based on Execution Time Estimation for Machine Learning Programs.

Kou Murakami, Kazuhiko Komatsu, Masayuki Sato, Hiroaki Kobayashi

Proceedings of the IEEE International Parallel and Distributed Processing Symposium Workshops, 2021

An Externally-Constrained Ising Clustering Method for Material Informatics.

Kazuhiko Komatsu, Masahito Kumagai, Ji Qi, Masayuki Sato, Hiroaki Kobayashi

Proceedings of the Ninth International Symposium on Computing and Networking, 2021

A Metadata Prefetching Mechanism for Hybrid Memory Architectures.

Shunsuke Tsukada, Hikaru Takayashiki, Masayuki Sato, Kazuhiko Komatsu, Hiroaki Kobayashi

Proceedings of the IEEE Symposium in Low-Power and High-Speed Chips, 2021

2020

Xevolver: A code transformation framework for separation of system-awareness from application codes.

Kazuhiko Komatsu, Ayumu Gomi, Ryusuke Egawa, Daisuke Takahashi, Reiji Suda, Hiroyuki Takizawa

Concurr. Comput. Pract. Exp., 2020

A Dynamic Parameter Tuning Method for High Performance SpMM.

Bin Qi, Kazuhiko Komatsu, Masayuki Sato, Hiroaki Kobayashi

Proceedings of the Parallel and Distributed Computing, Applications and Technologies, 2020

A Deep Reinforcement Learning Based Feature Selector.

Yiran Cheng, Kazuhiko Komatsu, Masayuki Sato, Hiroaki Kobayashi

Proceedings of the Parallel Architectures, Algorithms and Programming, 2020

I/O Performance of the SX-Aurora TSUBASA.

Mitsuo Yokokawa, Ayano Nakai, Kazuhiko Komatsu, Yuta Watanabe, Yasuhisa Masaoka, Yoko Isobe, Hiroaki Kobayashi

Proceedings of the 2020 IEEE International Parallel and Distributed Processing Symposium Workshops, 2020

Importance of Selecting Data Layouts in the Tsunami Simulation Code.

Takumi Kishitani, Kazuhiko Komatsu, Masayuki Sato, Akihiro Musa, Hiroaki Kobayashi

Proceedings of the 2020 IEEE International Parallel and Distributed Processing Symposium Workshops, 2020

Workshop 14: iWAPT Automatic Performance Tuning.

I-Hsin Chung, Kazuhiko Komatsu

Proceedings of the 2020 IEEE International Parallel and Distributed Processing Symposium Workshops, 2020

An Efficient Skinny Matrix-Matrix Multiplication Method by Folding Input Matrices into Tensor Core Operations.

Hao Tang, Kazuhiko Komatsu, Masayuki Sato, Hiroaki Kobayashi

Proceedings of the Eighth International Symposium on Computing and Networking Workshops, 2020

Combinatorial Clustering Based on an Externally-Defined One-Hot Constraint.

Masahito Kumagai, Kazuhiko Komatsu, Fumiyo Takano, Takuya Araki, Masayuki Sato, Hiroaki Kobayashi

Proceedings of the Eighth International Symposium on Computing and Networking, 2020

Energy-efficient Design of an STT-RAM-based Hybrid Cache Architecture.

Masayuki Sato, Xue Hao, Kazuhiko Komatsu, Hiroaki Kobayashi

Proceedings of the 2020 IEEE Symposium in Low-Power and High-Speed Chips, 2020

Optimization of the Himeno Benchmark for SX-Aurora TSUBASA.

Akito Onodera, Kazuhiko Komatsu, Soya Fujimoto, Yoko Isobe, Masayuki Sato, Hiroaki Kobayashi

Proceedings of the Benchmarking, Measuring, and Optimizing, 2020

2019

Performance Evaluation of Different Implementation Schemes of an Iterative Flow Solver on Modern Vector Machines.

Kenta Yamaguchi, Takashi Soga, Yoichi Shimomura, Thorsten Reimann, Kazuhiko Komatsu, Ryusuke Egawa, Akihiro Musa, Hiroyuki Takizawa, Hiroaki Kobayashi

Supercomput. Front. Innov., 2019

A Skewed Multi-banked Cache for Many-core Vector Processors.

Hikaru Takayashiki, Masayuki Sato, Kazuhiko Komatsu, Hiroaki Kobayashi

Supercomput. Front. Innov., 2019

Optimizing Memory Layout of Hyperplane Ordering for Vector Supercomputer SX-Aurora TSUBASA.

Osamu Watanabe, Yuta Hougi, Kazuhiko Komatsu, Masayuki Sato, Akihiro Musa, Hiroaki Kobayashi

Proceedings of the 2019 IEEE/ACM Workshop on Memory Centric High Performance Computing, 2019

A Hardware Prefetching Mechanism for Vector Gather Instructions.

Hikaru Takayashiki, Masayuki Sato, Kazuhiko Komatsu, Hiroaki Kobayashi

Proceedings of the 9th IEEE/ACM Workshop on Irregular Applications: Architectures and Algorithms, 2019

Analysis of Relationship Between SIMD-Processing Features Used in NVIDIA GPUs and NEC SX-Aurora TSUBASA Vector Processors.

Ilya V. Afanasyev, Vadim V. Voevodin, Vladimir V. Voevodin, Kazuhiko Komatsu, Hiroaki Kobayashi

Proceedings of the Parallel Computing Technologies, 2019

An Appropriate Computing System and Its System Parameters Selection Based on Bottleneck Prediction of Applications.

Kazuhiko Komatsu, Takumi Kishitani, Masayuki Sato, Hiroaki Kobayashi

Proceedings of the IEEE International Parallel and Distributed Processing Symposium Workshops, 2019

Performance Evaluation of Tsunami Inundation Simulation on SX-Aurora TSUBASA.

Akihiro Musa, Takashi Abe, Takumi Kishitani, Takuya Inoue, Masayuki Sato, Kazuhiko Komatsu, Yoichi Murashima, Shunichi Koshimura, Hiroaki Kobayashi

Proceedings of the Computational Science - ICCS 2019, 2019

Perceptron-based Cache Bypassing for Way-Adaptable Caches.

Masayuki Sato, Yongcheng Chen, Haruya Kikuchi, Kazuhiko Komatsu, Hiroaki Kobayashi

Proceedings of the IEEE Symposium in Low-Power and High-Speed Chips, 2019

2018

Developing Efficient Implementations of Bellman-Ford and Forward-Backward Graph Algorithms for NEC SX-ACE.

Ilya V. Afanasyev, Alexander S. Antonov, Dmitry A. Nikitenko, Vadim V. Voevodin, Vladimir V. Voevodin, Kazuhiko Komatsu, Osamu Watanabe, Akihiro Musa, Hiroaki Kobayashi

Supercomput. Front. Innov., 2018

Performance evaluation of a vector supercomputer SX-aurora TSUBASA.

Kazuhiko Komatsu, Shintaro Momose, Yoko Isobe, Osamu Watanabe, Akihiro Musa, Mitsuo Yokokawa, Toshikazu Aoyama, Masayuki Sato, Hiroaki Kobayashi

Proceedings of the International Conference for High Performance Computing, 2018

Search Space Reduction for Parameter Tuning of a Tsunami Simulation on the Intel Knights Landing Processor.

Kazuhiko Komatsu, Takumi Kishitani, Masayuki Sato, Akihiro Musa, Hiroaki Kobayashi

Proceedings of the 12th IEEE International Symposium on Embedded Multicore/Many-core Systems-on-Chip, 2018

Use of Code Structural Features for Machine Learning to Predict Effective Optimizations.

Yuki Kawarabatake, Mulya Agung, Kazuhiko Komatsu, Ryusuke Egawa, Hiroyuki Takizawa

Proceedings of the 2018 IEEE International Parallel and Distributed Processing Symposium Workshops, 2018

2017

Potential of a modern vector supercomputer for practical applications: performance evaluation of SX-ACE.

Ryusuke Egawa, Kazuhiko Komatsu, Shintaro Momose, Yoko Isobe, Akihiro Musa, Hiroyuki Takizawa, Hiroaki Kobayashi

J. Supercomput., 2017

A Directive Generation Approach to High Code-Maintainability for Various HPC Systems.

Kazuhiko Komatsu, Ryusuke Egawa, Hiroyuki Takizawa, Hiroaki Kobayashi

Int. J. Netw. Comput., 2017

An Application-Level Incremental Checkpointing Mechanism with Automatic Parameter Tuning.

Hiroyuki Takizawa, Muhammad Alfian Amrizal, Kazuhiko Komatsu, Ryusuke Egawa

Proceedings of the Fifth International Symposium on Computing and Networking, 2017

Designing an Open Database of System-Aware Code Optimizations.

Ryusuke Egawa, Kazuhiko Komatsu, Hiroyuki Takizawa

Proceedings of the Fifth International Symposium on Computing and Networking, 2017

A Memory Congestion-Aware MPI Process Placement for Modern NUMA Systems.

Mulya Agung, Muhammad Alfian Amrizal, Kazuhiko Komatsu, Ryusuke Egawa, Hiroyuki Takizawa

Proceedings of the 24th IEEE International Conference on High Performance Computing, 2017

Vectorization-Aware Loop Optimization with User-Defined Code Transformations.

Hiroyuki Takizawa, Thorsten Reimann, Kazuhiko Komatsu, Takashi Soga, Ryusuke Egawa, Akihiro Musa, Hiroaki Kobayashi

Proceedings of the 2017 IEEE International Conference on Cluster Computing, 2017

Performance and Power Analysis of SX-ACE Using HP-X Benchmark Programs.

Ryusuke Egawa, Kazuhiko Komatsu, Yoko Isobe, Toshihiro Kato, Souya Fujimoto, Hiroyuki Takizawa, Akihiro Musa, Hiroaki Kobayashi

Proceedings of the 2017 IEEE International Conference on Cluster Computing, 2017

2016

Translation of Large-Scale Simulation Codes for an OpenACC Platform Using the Xevolver Framework.

Kazuhiko Komatsu, Ryusuke Egawa, Shoichi Hirasawa, Hiroyuki Takizawa, Ken'ichi Itakura, Hiroaki Kobayashi

Int. J. Netw. Comput., 2016

A Directive Generation Approach Using User-Defined Rules.

Kazuhiko Komatsu, Ryusuke Egawa, Hiroyuki Takizawa, Hiroaki Kobayashi

Proceedings of the Fourth International Symposium on Computing and Networking, 2016

2015

Migration of an Atmospheric Simulation Code to an OpenACC Platform Using the Xevolver Framework.

Kazuhiko Komatsu, Ryusuke Egawa, Shoichi Hirasawa, Hiroyuki Takizawa, Ken'ichi Itakura, Hiroaki Kobayashi

Proceedings of the Third International Symposium on Computing and Networking, 2015

An energy-efficient dynamic memory address mapping mechanism.

Masayuki Sato, Chengguang Han, Kazuhiko Komatsu, Ryusuke Egawa, Hiroyuki Takizawa, Hiroaki Kobayashi

Proceedings of the 2015 IEEE Symposium in Low-Power and High-Speed Chips, 2015

2014

A Compiler-Assisted OpenMP Migration Method Based on Automatic Parallelizing Information.

Kazuhiko Komatsu, Ryusuke Egawa, Hiroyuki Takizawa, Hiroaki Kobayashi

Proceedings of the Supercomputing - 29th International Conference, 2014

2011

A History-Based Performance Prediction Model with Profile Data Classification for Automatic Task Allocation in Heterogeneous Computing Systems.

Katsuto Sato, Kazuhiko Komatsu, Hiroyuki Takizawa, Hiroaki Kobayashi

Proceedings of the IEEE International Symposium on Parallel and Distributed Processing with Applications, 2011

CheCL: Transparent Checkpointing and Process Migration of OpenCL Applications.

Hiroyuki Takizawa, Kentaro Koyama, Katsuto Sato, Kazuhiko Komatsu, Hiroaki Kobayashi

Proceedings of the 25th IEEE International Symposium on Parallel and Distributed Processing, 2011

2010

A Fast Ray-Tracing Using Bounding Spheres and Frustum Rays for Dynamic Scene Rendering.

Ken-ichi Suzuki, Yoshiyuki Kaeriyama, Kazuhiko Komatsu, Ryusuke Egawa, Nobuyuki Ohba, Hiroaki Kobayashi

IEICE Trans. Inf. Syst., 2010

Automatic Tuning of CUDA Execution Parameters for Stencil Processing.

Katsuto Sato, Hiroyuki Takizawa, Kazuhiko Komatsu, Hiroaki Kobayashi

Proceedings of the Software Automatic Tuning, From Concepts to State-of-the-Art Results, 2010

2009

CheCUDA: A Checkpoint/Restart Tool for CUDA Applications.

Hiroyuki Takizawa, Katsuto Sato, Kazuhiko Komatsu, Hiroaki Kobayashi

Proceedings of the 2009 International Conference on Parallel and Distributed Computing, 2009

2006

Ray Tracing Hardware System Using Plane-Sphere Intersections.

Yoshiyuki Kaeriyama, Daichi Zaitsu, Kazuhiko Komatsu, Ken-ichi Suzuki, Tadao Nakamura, Nobuyuki Ohba

Proceedings of the 2006 International Conference on Field Programmable Logic and Applications (FPL), 2006

1987

The Outline Procedure in Pattern Data Preparation for Vector-Scan Electron-Beam Lithography.

Kazuhiko Komatsu, Masanori Suzuki

IEEE Trans. Comput. Aided Des. Integr. Circuits Syst., 1987