Toshiyuki Imamura

Toshiyuki Imamura, Susumu Yamada, Masahiko Machida, 2011, 2011 International Conference for High Performance Computing, Networking, Storage and Analysis (SC).

Cache-efficient implementation and batching of tridiagonalization on manycore CPUs

Toshiyuki Imamura, Shuhei Kudo, Toshiyuki Imamura, 2019, HPC Asia.

High Performance Eigenvalue Solver for Hubbard Model: Tuning Strategies for LOBPCG Method on CUDA GPU

Toshiyuki Imamura, Masahiko Machida, Susumu Yamada, 2019, PARCO.

Design of an FPGA-Based Matrix Multiplier with Task Parallelism

Toshiyuki Imamura, Daichi Mukunoki, Yiyu Tan, 2019, PARCO.

Communication Avoiding Neumann Expansion Preconditioner for LOBPCG Method: Convergence Property of Exact Diagonalization Method for Hubbard Model

Toshiyuki Imamura, Susumu Yamada, Masahiko Machida, 2017, PARCO.

C-Stab: Cache Stabilizing Algorithm for a Numerical Library

Toshiyuki Imamura, 2005, Parallel and Distributed Computing and Networks.

TIME – A DISTRIBUTED RESOURCE HANDLING TOOL

Toshiyuki Imamura, Hiroshi Takemiya, Nobuhiro Yamagishi, 2002 .

Abstract: Communication Overlap Techniques for Improved Strong Scaling of Gyrokinetic Eulerian Code beyond 100k Cores on the K-Computer

Hikaru Inoue, Toshiyuki Imamura, Susumu Yamada, 2012, 2012 SC Companion: High Performance Computing, Networking Storage and Analysis.

High Performance LOBPCG Method for Solving Multiple Eigenvalues of Hubbard Model: Efficiency of Communication Avoiding Neumann Expansion Preconditioner

Toshiyuki Imamura, Susumu Yamada, Masahiko Machida, 2018, SCFA.

10TFLOPS Eigenvalue Solver for Strongly-Correlated Fermions on the Earth Simulator

Toshiyuki Imamura, Susumu Yamada, Masahiko Machida, 2005, Parallel and Distributed Computing and Networks.

Communication-overlap techniques for improved strong scaling of gyrokinetic Eulerian code beyond 100k cores on the K-computer

Hikaru Inoue, Toshiyuki Imamura, Susumu Yamada, 2014, 2012 SC Companion: High Performance Computing, Networking Storage and Analysis.

Optimization of Reordering Procedures in HOTRG for Distributed Parallel Computing

Tetsuya Sakurai, Toshiyuki Imamura, Akira Imakura, 2018, 2018 IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW).

Implementation of d-Spline-based incremental performance parameter estimation method with ppOpen-AT

Takahiro Katagiri, Teruo Tanaka, Toshiyuki Imamura, 2014, Sci. Program..

4011 A challenge to largest-scale eigenvalue problem on the Earth Simulator

Toshiyuki Imamura, Susumu Yamada, Masahiko Machida, 2005 .

Eigen-G: GPU-Based Eigenvalue Solver for Real-Symmetric Dense Matrices

Toshiyuki Imamura, Susumu Yamada, Masahiko Machida, 2013, PPAM.

Stampi-I/O: A Flexible Parallel-I/O Library for Heterogeneous Computing Environment

Toshiyuki Imamura, Yuichi Tsujita, Hiroshi Takemiya, 2002, PVM/MPI.

Parallel Language ADETRAN4 - Its Utilization and Evaluation on VPP - 500

Toshiyuki Imamura, Tatsuo Nogi, Kazunori Sugiyama, 1995 .

Fast Implementation of General Matrix-Vector Multiplication (GEMV) on Kepler GPUs

Daisuke Takahashi, Toshiyuki Imamura, Daichi Mukunoki, 2015, 2015 23rd Euromicro International Conference on Parallel, Distributed, and Network-Based Processing.

Automatic Thread-Block Size Adjustment for Memory-Bound BLAS Kernels on GPUs

Daisuke Takahashi, Toshiyuki Imamura, Daichi Mukunoki, 2016, 2016 IEEE 10th International Symposium on Embedded Multicore/Many-core Systems-on-Chip (MCSOC).

Optimizing Precision for High-Performance, Robust, and Energy-Efficient Computations

Kentaro Sano, Stef Graillat, Toshiyuki Imamura, 2020 .

Automatic Tuning Technique Exploring Within the Hardware-Specific Constrained Parameters

Toshiyuki Imamura, Ken Naono, Toshiyuki Imamura, 2005, LSSC.

A Visual Resource Integration Environment for Distributed Applications on the ITBL System

Norihiro Nakajima, Toshiyuki Imamura, Hiroshi Takemiya, 2003, ISHPC.

Eigenvalue Problems: Algorithms, Software and Applications in Petascale Computing

Tetsuya Sakurai, Yusaku Yamamoto, Toshiyuki Imamura, 2017 .

Proper orthogonal decomposition based parallel compression for visualizing big data on the K computer

Kwan-Liu Ma, Chongke Bi, Haiyuan Wu, 2013, 2013 IEEE Symposium on Large-Scale Data Analysis and Visualization (LDAV).

An energy-efficient FPGA-based matrix multiplier

Toshiyuki Imamura, Yiyu Tan, 2017, 2017 24th IEEE International Conference on Electronics, Circuits and Systems (ICECS).

Poster: Preliminary Report for a High Precision Distributed Memory Parallel Eigenvalue Solver

Toshiyuki Imamura, Susumu Yamada, Masahiko Machida, 2012, 2012 SC Companion: High Performance Computing, Networking Storage and Analysis.

Reduced-Precision Floating-Point Formats on GPUs for High Performance and Energy Efficient Computation

Toshiyuki Imamura, Daichi Mukunoki, 2016, 2016 IEEE International Conference on Cluster Computing (CLUSTER).

White Paper from Workshop on Large-scale Parallel Numerical Computing Technology (LSPANC 2020): HPC and Computer Arithmetic toward Minimal-Precision Computing pdf

Taisuke Boku, Takeshi Fukaya, Jens Domke, 2020, ArXiv.

Implementation and Performance Analysis of 2.5D-PDGEMM on the K Computer

Toshiyuki Imamura, Daichi Mukunoki, 2017, PPAM.

An Estimation of Complexity and Computational Costs for Vertical Block-Cyclic Distributed Parallel LU Factorization

Toshiyuki Imamura, 2004, The Journal of Supercomputing.

Application of a Preconditioned Chebyshev Basis Communication-Avoiding Conjugate Gradient Method to a Multiphase Thermal-Hydraulic CFD Code

Toshiyuki Imamura, Susumu Yamada, Yasuhiro Idomura, 2018, SCFA.

Performance Analysis of the Chebyshev Basis Conjugate Gradient Method on the K Computer

Teruo Tanaka, Takeshi Fukaya, Yusuke Hirota, 2015, PPAM.

20507 Novel diagonalization method for ultra-large-scale sparse matrix using a full node of the Earth Simulator

Toshiyuki Imamura, Susumu Yamada, Masahiko Machida, 2006 .

Abstract: Preliminary Report for a High Precision Distributed Memory Parallel Eigenvalue Solver

Toshiyuki Imamura, Susumu Yamada, Masahiko Machida, 2012, 2012 SC Companion: High Performance Computing, Networking Storage and Analysis.

Performance Analysis of 2D-compatible 2.5D-PDGEMM on Knights Landing Cluster

Toshiyuki Imamura, Daichi Mukunoki, 2018, ICCS.

Recursive multi-factoring algorithm for MPI allreduce

Toshiyuki Imamura, 2007, Parallel and Distributed Computing and Networks.

MPI-2 Support in Heterogeneous Computing Environment Using an SCore Cluster System

Toshiyuki Imamura, Yuichi Tsujita, Hiroshi Takemiya, 2003, ISPA.

Grid Computing Supporting System on ITBL Project

Yoshio Suzuki, Genki Yagawa, Norihiro Nakajima, 2003, ISHPC.

Visualization Technique for Large-scale Data by Particle-based Volume Rendering

Toshiyuki Imamura, Hiroshi Takemiya, Hiroko Nakamura Miyamura, 2015 .

Narrow-band reduction approach of a DRSM eigensolver on a multicore-based cluster system

Toshiyuki Imamura, Susumu Yamada, Masahiko Machida, 2009, PARCO.

International workshop on eigenvalue problems: algorithms; software and applications, in petascale computing (EPASA2018)

Tetsuya Sakurai, Toshiyuki Imamura, Kengo Nakajima, 2019 .

A Case Study on Modeling the Performance of Dense Matrix Computation: Tridiagonalization in the EigenExa Eigensolver on the K Computer

Yusaku Yamamoto, Takeshi Fukaya, Toshiyuki Imamura, 2018, 2018 IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW).

Left-Preconditioned Communication-Avoiding Conjugate Gradient Methods for Multiphase CFD Simulations on the K Computer

Toshiyuki Imamura, Susumu Yamada, Yasuhiro Idomura, 2016, 2016 7th Workshop on Latest Advances in Scalable Algorithms for Large-Scale Systems (ScalA).

A Study of Parallel Data Compression Using Proper Orthogonal Decomposition on the K Computer

Kwan-Liu Ma, Chongke Bi, Haiyuan Wu, 2014, EGPGV@EuroVis.

Design Towards Modern High Performance Numerical LA Library Enabling Heterogeneity and Flexible Data Formats

Yusuke Hirota, Toshiyuki Imamura, Daichi Mukunoki, 2017, PARCO.

Development of a High-Performance Eigensolver on a Peta-Scale Next-Generation Supercomputer System (Selected Papers of the Joint International Conference of Supercomputing in Nuclear Applications and Monte Carlo : SNA + MC 2010)

Toshiyuki Imamura, Susumu Yamada, Masahiko Machida, 2011 .

High-Performance Quantum Simulation for Coupled Josephson Junctions on the Earth Simulator: a Challenge To the Schrödinger Equation On 2564 Grids

Toshiyuki Imamura, Susumu Yamada, Masahiko Machida, 2010, Int. J. High Perform. Comput. Appl..

Parallel implementation of 3D FFT with volumetric decomposition schemes for efficient molecular dynamics simulations

Toshiyuki Imamura, Yuji Sugita, Jaewoon Jung, 2016, Comput. Phys. Commun..

Over 10 TFLOPS Computation for a Huge Sparse Eigensolver on the Earth Simulator

Toshiyuki Imamura, Susumu Yamada, Masahiko Machida, 2006 .

Parallel Computing Design for Exact Diagonalization Scheme on Multi-band Hubbard Cluster Models

Toshiyuki Imamura, Susumu Yamada, Masahiko Machida, 2013, PARCO.

Quadruple-Precision BLAS Using Bailey's Arithmetic with FMA Instruction: Its Performance and Applications

Toshiyuki Imamura, Susumu Yamada, Masahiko Machida, 2017, 2017 IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW).

High-performance computing for exact numerical approaches to quantum many-body problems on the earth simulator

Toshiyuki Imamura, Susumu Yamada, Masahiko Machida, 2006, SC.

Accurate Matrix Multiplication on Binary128 Format Accelerated by Ozaki Scheme

Toshiyuki Imamura, Daichi Mukunoki, Takeshi Ogita, 2021, ICPP.

FPGA-Based Acceleration of FDTD Sound Field Rendering

Toshiyuki Imamura, Yiyu Tan, Masaaki Kondo, 2021, Journal of the Audio Engineering Society.

The NICAM 3.5km-1024 ensemble simulation: Performance optimization and scalability of NICAM-LETKF on supercomputer Fugaku

Toshiyuki Imamura, Koji Terasaki, Takemasa Miyoshi, 2021 .

A Rapid Euclidean Norm Calculation Algorithm that Reduces Overflow and Underflow

Daisuke Takahashi, Toshiyuki Imamura, Daichi Mukunoki, 2021, ICCSA.

Iterative methods with mixed-precision preconditioning for ill-conditioned linear systems in multiphase CFD simulations

Toshiyuki Imamura, Susumu Yamashita, Naoyuki Onodera, 2021, 2021 12th Workshop on Latest Advances in Scalable Algorithms for Large-Scale Systems (ScalA).

The 10,240‐member ensemble Kalman filtering with an intermediate AGCM

Toshiyuki Imamura, Takemasa Miyoshi, T. Miyoshi, 2014 .

Ultra Large-scale Exact-diagonalization for Confined Fermion- Hubbard Model on the Earth Simulator: Exploration of Superfluidity in Confined Strongly-Correlated Systems

Toshiyuki Imamura, Susumu Yamada, Masahiko Machida, 2007 .

Quantum effects on capacitively coupled intrinsic Josephson junctions

Tomio Koyama, Toshiyuki Imamura, Susumu Yamada, 2008 .