Wave propagation simulation of complex multi-material problems with fast low-order unstructured finite-element meshing and analysis, Best Paper Award, HPC Asia 2018
Winner: [9-7] K. Fujita, K. Katsushima, T. Ichimura, M. Horikoshi, K. Nakajima, M. Hori, L. Maddegedara
Nov 2017
Implicit Low-Order Unstructured Finite-Element Multiple Simulation Enhanced by Dense Computation using OpenACC, Best Paper Award, Fourth Workshop on Accelerator Programming Using Directives in conjunction with SC17 (The International Conference for High Performance Computing, Networking, Storage and Analysis)
Winner: T. Yamaguchi, K. Fujita, T. Ichimura, M. Hori, M. Lalith, K. Nakajima
Dec 2014
Optimization of Serial and Parallel Communications for Parallel Geometric Multigrid Method, Best Paper Award, 20th IEEE International Conference for Parallel and Distributed Systems (ICPADS 2014)
Jun 2003
Parallel Finite Element Analysis Platform for the Earth Simulator: GeoFEM, Selected BEST Papers, ICCS 2003 (International Conference on Computational Science)
Winner: Okuda, H., Nakajima, K., Iizuka, M., Chen, L. and Nakamura, H
Jun 2001
Parallel 3D Adaptive Compressible Navier-Stokes Solver in GeoFEM with Dynamic Load-Balancing by DRAMA Library, Best Paper Award, HPCN Europe 2001 (High-Performance Computing and Networking), Amsterdam, The Netherlands
A new adaptive finite element numerical method has been developed for the unsteady Navier-Stokes equations of incompressible flow in two dimensions. The momentum equations combined with a pressure correction equation are solved employing a nonstag...
K. Nakajima, Y. Kallinderis, I. Sibetheros, R. W. Miksad, K. Lambrakos
Transaction of the ASME Journal of Offshore Mechanics and Arctic Engineering 116 202-208 Jan 1994 [Refereed]
A numerical study of the nonlinear and random behavior of flow-induced forces on offshore structures and experimental verification of the results are presented. The numerical study is based on a finite-element method for the unsteady incompressibl...
K. Nakajima, I. Sibetheros, R. W. Miksad, Y. Kallinderis, K. Lambrakos
Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE 1 355-361 Jan 1994 [Refereed]
A study of the nonlinear and random behavior of flow-induced forces on offshore structure is presented. This study seeks to improve the understanding of the basic hydrodynamics of reversing flow around a cylinder. The experiments use a computer co...
Proceedings of the ASME/JSME International Conference on Nuclear Engineering, ICONE 1 997-1008 Dec 1996 [Refereed]
A computer code, WINDFLOW, for a three-dimensional thermo-fluiddynamic analysis of a single phase gaseous flow in a reactor coolant piping has been developed at JAERI. A hybrid grid system composed of triangular and quadrangular cross-sectional ce...
Lecture Notes in Computer Science, High-Performance Computing and Networking, International Conference and Exhibition, HPCN Europe 1998 1401 904-906 Apr 1998 [Refereed]
International Journal of Computational Fluid Dynamics 12 315-322 Jan 1999
Incomplete Lower-Upper (0) (ILU(0)) factorization is a very effective preconditioning method of iterative solvers for large-scale linear sparse systems in scientific and engineering computations. However, this method requires global data dependenc...
Lecture Notes in Computer Science, High-Performance Computing and Networking, International Conference and Exhibition, HPCN Europe 2001 2110 183-193 Apr 2001
Advances in Engineering Software 32 511-518 Jul 2001 [Refereed]
GeoFEM, a parallel finite element analysis system, is application software that is being developed for conducting simulations of solid earth. This system is currently run on a massively parallel computer and can perform linear elastic analysis of ...
Transactions of the Japan Society for Industrial and Applied Mathematics 12(1) 29-43 Mar 2002 [Refereed]
At present, in order to carry out computer simulations of complex large-scale problems, parallel computers are necessary to store huge amounts of data and to solve such problems in a given practical time. The finite element method (FEM) has been w...
Proceedings of the Fourth Eurographics Workshop on Parallel Graphics and Visualization, EGPGV 2002, Blaubeuren, Germany, September 9-10, 2002 133-140 Sep 2002 [Refereed]
Journal of Nuclear Science and Technology 40 12-21 Jan 2003 [Refereed]
Effectiveness of debris cooling by water that fills a gap between the debris and the lower head wall was estimated through steady calculations in reactor scale. In those calculations, the maximum coolable debris depth was assessed as a function of...
Parallel Iterative Solves for Solid Earth Simulation on the Earth Simulator
NAKAJIMA, Kengo
Proceedings of Sixth IMACS International Symposium on Iterative Methods in Scientific Computing 181-189 Mar 2003 [Refereed]
Hiroshi Okuda, Kengo Nakajima, Mikio Iizuka, Li Chen, Hisashi Nakamura
Lecture Notes in Computer Science 2659 773-780 Jun 2003 [Refereed]
GeoFEM has been developed as a finite element solid earth simulator using the Earth Simulator (ES) (35.61 Tflops/peak according to the Linpack benchmark test). It is composed of a platform and some pluggable 'analysis modules' for structural, elec...
Proceedings of the 2003 ACM/IEEE Conference on Supercomputing, SC 2003 Nov 2003 [Refereed]
An efficient parallel iterative method with selective blocking preconditioning has been developed for symmetric multiprocessor (SMP) cluster architectures with vector processors such as the Earth Simulator. This method is based on a three-level hy...
IEEE Proceedings of 7th International Conference on High Performance Computing and Grid in Asia Pacific Region (HPC Asia 2004) 150-159 Jul 2004 [Refereed]
Efficient parallel preconditioned iterative linear solvers for unstructured grid have been developed for symmetric multiprocessor (SMP) cluster architectures with vector processors such as the Earth Simulator. Three types of preconditioning, metho...
Li Chen, Issei Fujishiro, Issei Fujishiro, Kengo Nakajima
Proceedings of the Seventh IASTED International Conference on Computer Graphics and Imaging 242-247 Dec 2004 [Refereed]
A new parallel volume rendering method for large unstructured data has been developed for the Earth Simulator. Concurrent visualization can be performed with numerical computation modules on the supercomputer. The supervoxel partition and voxel re...
Li Chen, Issei Fujishiro, Issei Fujishiro, Kengo Nakajima
Pure and Applied Geophysics 161 2245-2263 Dec 2004 [Refereed]
A scalable and high-performance parallel visualization subsystem has been developed in GeoFEM for the Earth Simulator. As part of the Earth Simulator project in Japan, the proposed subsystem is effective for the visualization of large-scale geosci...
We propose a new library interface SILC (Simple Interface for Library Collections) which (1) separates passing data and requesting computation at calling library program, (2) uses mathematical expression in text data for a computation request, and...
An efficient parallel iterative method for finite element method has been developed for symmetric multiprocessor (SMP) cluster architectures with vector processors such as the Earth Simulator. The method is based on a three-level hybrid parallel p...
IEEE Proceedings of 8th International Conference on High Performance Computing and Grid in Asia Pacific Region (HPC Asia 2005) 83-90 Dec 2005 [Refereed]
Hitachi SR11000/J1 and IBM p5-595 are SMP cluster architectures based on IBM POWERS processor (1.9GHz). In this study, performance of each architecture on a single node performance with eight processor cores has been evaluated through various type...
In large-scale scientific simulations using massively parallel computers, visualization of results is a critical technical issue. Various types of methods have been developed in this area, but it is very difficult to keep both of parallel efficien...
Advanced scientific computational methods and their applications to nuclear technologies - (9) High performance computing(2)
Nakajima Kengo
Journal of the Atomic Energy Society of Japan 48(12) 961-966 Dec 2006 [Refereed]
NAKAJIMA K., NAGASHIMA T., EZURE S., ICHIMURA T., OKUDA H.
IPSJ SIG Notes 2007(17) 215-220 Mar 2007
A prototype of framework for large-scale parallel coupling simulations through M×N parallel data redistribution under SPMD environment has been developed for "Integrated Predictive Simulation System for Earthquake and Tsunami Disaster" Capabilitie...
In this work, "PHIDAL (Parallel Hierarchical lnterface Decomposition Algorithm)" and a hybrid parallel programming model have been implemented to a finite-element application fbr linear-elastic silnulations with heterogeneous material property usi...
Lecture Notes in Computer Science, IEEE Third International Conference on High-Performance Computation Conference (HPCC-07) 4782 384-395 Sep 2007 [Refereed]
Hitachi SR11000/J2 is an SMP cluster architecture based on IBM POWER5+ processors (2.3GHz). In this study, performance of Hitachi SRI 1000/J2 with up to 1,024 cores has been evaluated through various types of benchmarks based on GeoFEM, which is a...
A framework for parallel adaptive mesh refinement has been developed. Target application is FEM-based simulation code in geophysics for calculating sets of unit slip-response functions at heterogeneous fault boundaries with complicated geometries....
Parallel Computing: From Multicores and GPU's to Petascale, Proceedings of the conference ParCo 2009, 1-4 September 2009, Lyon, France 99-106 2009 [Refereed]
Advances in Geocomputing, Lecture Notes in Earth Sciences 119 65-118 Feb 2009 [Refereed][Invited]
Solving large-scale systems of linear equations [A]{x} = {b} is one of the most expensive and critical processes in scientific computing. In particular, for simulation codes based on the finite-element method (FEM), most of the computational time ...
In this study, "HID (Parallel Hierarchical Interface Decomposition)" and a hybrid parallel programming model have been implemented to a finite-element application for linear-elastic simulations with heterogeneous material property using parallel p...
3次元津波伝搬シミュレーションコードにおいて，海底の深さに起因するループの連続化を利用し，カーネルを最適化する方式を提案する．T2Kオープンスパコン(東大版)を利用した性能評価の結果，論理マスクを用いる従来方式に対し，ベンチマークコードで48%の高速化，MPI化された実コードで5.8%，および9.2%の速度向上を得た．In this presentation, we propose an optimization method to sequentialize the loop relat...
本稿では，数値計算ライブラリにおいて個々に開発された自動チューニング機能の実装を再利用するという AT 実装再利用性という概念を示す．AT 実装再利用性を達成する自動チューニングインターフェースが持つべき機能を示し，その機能の一部を実装したライブラリ OpenATLib のインターフェースについて紹介する．In this paper, reusability for implementation of automatic tuning facility (RIAT) for numeric...
IEEE Proceedings of the 38th International Conference on Parallel Processing (ICPP 2009) (Second International Workshop on Parallel Programming Models and Systems Software for High-End Computing (P2S2)) 73-80 Sep 2009 [Refereed]
Bulletin of the Japan Society for Industrial and Applied Mathematics 20(4) 297-309 2010 [Refereed]
Conventional numerical libraries with auto-tuning (AT) facility have no re-usability for their AT functions. To solve the re-usability problem of AT libraries, we have established Application Programming Interfaces (APIs) for AT. The library of th...
Bulletin of the Japan Society for Industrial and Applied Mathematics 20(4) 310-320 2010 [Refereed]
In this study, framework for automatic tuning on selection of optimum parallel programming model in finite-element computation has been investigated. Target FEM code has been tested and optimized on T2K Open Supercomputers (Tokyo) with up to 1,024...
OpenMP/MPI ハイブリッド並列プログラミングモデルを，並列多重格子前処理付き反復法を使用した，三次元有限体積法に基づく不均質多孔質媒体中における地下水流れ問題シミュレーションに適用した．開発したプログラムの性能と安定性を T2K オープンスパコン （東大），Cray-XT4 の 1,024 コアまでを使用して評価した．First Touch Data Placement，連続メモリアクセスのためのデータ再配置，適切な NUMA control の組み合わせにより，OpenMP/MP...
Recent Advances in the Message Passing Interface - 19th European MPI Users' Group Meeting, EuroMPI 2012, Vienna, Austria, September 23-26, 2012. Proceedings 296-297 2012 [Refereed]
Proceedings of the 2012 PPOPP International Workshop on Programming Models and Applications for Multicores and Manycores, PMAM 2012, New Orleans, LA, USA, February 26, 2012 93-102 Feb 2012 [Refereed]
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 7851 LNCS 80-92 Sep 2013
As one of the promising approaches for reducing greenhouse-gas content in the atmosphere, CCS (carbon dioxide capture and storage) has been recognized worldwide. CO2 is captured from large emission sources and injected and stored in deep reservoir...
Proceedings of the International Conference on Computational Science, ICCS 2014, Cairns, Queensland, Australia, 10-12 June, 2014 29 936-946 2014 [Refereed]
Journal of the Japan Society for Simulation Technology 20(3) 219-223 Sep 2001
In GeoFEM, iterative methods are adopted for solving large-scale sparse matrices in scientific computing using massively parallel computers. In this paper, distributed data structure and parallel processing in GeoFEM will be described. Moreover, r...
Open/MPI Hybrid vs. Flat MPI on the Earth Simulator: Parallel Iterative Solvers for Finite Element Method
Lecture Notes in Computer Science 2858, Spring-Verlag. 2858 486-499 2003
Chris Johnson, David Keyes, Ulrich Ruede, Gyan Bhanot, Rupak Biswas, Edmond Chow, Yuefan Deng, Lori Freitag Diachin, Omar Ghattas, Laurence Halpern, Robert Harrison, Bruce Hendrickson, Kirk Jordan, Tammy Kolda, Louis Komzsik, Ulrich Langer, Hans Petter Langtangen, Steven Lee, Kengo Nakajima, Aiichiro Nakano, Esmond G. Ng, Stefan Turek, Andy Wathen, Margaret Wright, David P. Young
Proceedings of the International Conference on Computational Science, ICCS 2011, Nanyang Technological University, Singapore, 1-3 June, 2011 1448-1449 2011 [Refereed]
Euro-Par 2011 Parallel Processing - 17th International Conference, Euro-Par 2011, Bordeaux, France, August 29 - September 2, 2011, Proceedings, Part II 302 2011 [Refereed]
Euro-Par 2011 Parallel Processing 17th International Conference, Euro-Par 2011 Bordeaux, France, August 29-September 2, 2011 Proceedings, Part II Introduction
Coulaud Olivier, Nakajima Kengo, Ng Esmond G., Vazquez Mariano
Olivier Coulaud, Kengo Nakajima, Esmond G. Ng, Mariano Vazquez
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 6853 LNCS 302 Sep 2011
As demand in high-resolution and high-fidelity modeling and simulation increases, desktop computers or small clusters of processors have proven to be insufficient to carry out the calculations in many scientific, engineering, and industrial applic...
G. Antoniu, T. Boku, A. Buttari, C. Calvin, P. Codognet, M. Dayde, N. Emad, Y. Ishikawa, G. Joslin, S. Matsuoka, K. Nakajima, H. Nakashima, R. Namyst, S. Petiton, T. Sakurai, M. Sato
CSIT 2013 - 9th International Conference on Computer Science and Information Technologies, Revised Selected Papers Jan 2013
The Japanese-french FP3C (Framework and Programming for Post-Petascale Computing) Project ANR/JST-2010-JTIC-003 aims at studying the software technologies, languages and programming models on the road to exascale computing. The ability to efficien...
Andreas Alvermann, Achim Basermann, Hans-Joachim Bungartz, Christian Carbogno, Dominik Ernst, Holger Fehske, Yasunori Futamura, Martin Galgon, Georg Hager, Sarah Huber, Thomas Huckle, Akihiro Ida, Akira Imakura, Masatoshi Kawai, Simone Köcher, Moritz Kreutzer, Pavel Kus, Bruno Lang, Hermann Lederer, Valeriy Manin, Andreas Marek, Kengo Nakajima, Lydia Nemec, Karsten Reuter, Michael Rippl, Melven Röhrig-Zöllner, Tetsuya Sakurai, Matthias Scheffler, Christoph Scheurer, Faisal Shahzad, Danilo Simoes Brambila, Jonas Thies, Gerhard Wellein
Jun 2018
We first briefly report on the status and recent achievements of the ELPA-AEO
(Eigenvalue Solvers for Petaflop Applications - Algorithmic Extensions and
Optimizations) and ESSEX II (Equipping Sparse Solvers for Exascale) projects.
In both collabor...
The Proceedings of The Computational Mechanics Conference 2003
This paper describes our parallel visualization system for large unstructured datasets on the Earth Simulator. Parallel volume rendering is one of important methods in the system. Some strategies have been adopted to make it suitable for the Earth...
Solid Earth Simulation Using GeoFEM Platform on the Earth Simulator[Invited]
NAKAJIMA, Kengo
SIAM Conference on Computational Science and Engineering (CSE03) Feb 2003
HPC Middleware (HPC-MW): Infrastructure for Scientific Applications on HPC Environments - Overview and Recent Progress[Invited]
Nakajima, K., Okuda, H.
4th Workshop on ACTS Collection Aug 2003
HPC Middleware (HPC-MW) Infrastructure for Scientific Applications on HPC Environments[Invited]
Nakajima, K. and Okuda
SIAM 11th Conference on Parallel Processing for Scientific Computing (PP04), MS 37: Portable Parallel Numerical Libraries for Various Types of Architectures Feb 2004
High-Performance Computing in Solid Earth Simulations: Benchmarks of FEM-type codes on IBM BlueGege/L (512-node prototype)[Invited]
NAKAJIMA, Kengo
NERSC Scientific Computing Seminar, Lawrence Berkeley National Laboratory Dec 2004
The Proceedings of The Computational Mechanics Conference 2005
Flat MPI and Hybrid Parallel Programming Models for FEM Applications on SMP Cluster Architectures[Invited]
NAKAJIMA, Kengo
First International Workshop on OpenMP (IWOMP 2005) Jun 2005
The impact of parallel programming models on the performance of preconditioned iterative solvers for finite-element simulations[Invited]
NAKAJIMA, Kengo
CSE Colloquia, The Pennsylvania State University Feb 2006
Parallel Multilevel Iterative Linear Solvers for Heterogeneous Field with Adaptive Mesh Refinement[Invited]
NAKAJIMA, Kengo
SIAM 12th Conference on Parallel Processing for Scientific Computing (PP06), MS 30: Scalable Preconditioning with Incomplete Factors and Sparse Approximate Inverses Feb 2006
Scalability of GeoFEM on BG/L prototype[Invited]
NAKAJIMA, Kengo
The 3rd BG/L Systems Software and Applications Workshop Apr 2006
The GeoFEM Benchmarks for the Parallel Finite Element Method on NERSC Computers[Invited]
NAKAJIMA, Kengo
NERSC Scientific Computing Seminar, Lawrence Berkeley National Laboratory, Berkeley Dec 2006
An Integrated Predictive Simulation System for Earthquake and Tsunami Disasters[Invited]
NAKAJIMA, Kengo
NERSC Scientific Computing Seminar, Lawrence Berkeley National Laboratory Dec 2006
NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan 2007
In October 2005, the project titled "Integrated Predictive Simulation System for Earthquake and Tsunami Disaster" by 7 institutions in Japan started as one of the basic research programs (CREST) funded by Japan Science and Technology Agency (JST)....
Proceedings of the conference on computational engineering and science May 2007
Integrated Predictive Simulation System for Earthquake and Tsunami Disaster - Contributions from the HPC Community[Invited]
NAKAJIMA, Kengo
2007 Workshop on Community Finite Element Models for Fault Systems and Tectonic Studies Jun 2007
Parallel Programming Models for Finite-Element Applications on SMP Cluster Architectures,[Invited]
NAKAJIMA, Kengo
Fourth International Conference of Applied Mathematics and Computing Aug 2007
Hybrid vs. Flat MPI: Parallel Programming Models in Multi-core Era[Invited]
NAKAJIMA, Kengo
Second Korea-Japan Workshop on Computational Engineering Sep 2007
Automatic selection of parameters in parallel preconditioners for ill-conditioned problems[Invited]
NAKAJIMA, Kengo
SIAM 13th Conference on Parallel Processing for Scientific Computing (PP08), MS 25: Auto-tuning on Numerical Libraries and Advanced Computer Systems Part-II Mar 2008
Hybrid vs. Flat MPI ? : Experiences in Preconditioned Iterative Linear Solvers for Unstructured Grids[Invited]
NAKAJIMA, Kengo
SIAM 13th Conference on Parallel Processing for Scientific Computing (PP08), MS 49: Algorithms and Optimizations Targeting Multi-Core Architectures Part-II Mar 2008
Proceedings of the conference on computational engineering and science 19 May 2008
Early Experiences in "T2K Open Super Computer (Todai Combined Cluster)" with AMD Quad-Core Opteron processors[Invited]
NAKAJIMA, Kengo
NERSC Scientific Computing Seminar, Lawrence Berkeley National Laboratory Jun 2008
Strategy of Domain Partitioning for Parallel Preconditioned Iterative Solvers in the Multi-Core Era[Invited]
NAKAJIMA, Kengo
5th GSIC International Symposium (Leading Studies on Computational Mechanics) Dec 2008
Robust and Efficient Parallel Preconditioning Methods with Hierarchical Interface Decomposition for Multicore Architectures[Invited]
NAKAJIMA, Kengo
SIAM Conference on Computational Science and Engineering (CSE09), MS115: Current Auto-tuning Challenges: Multicore Architecture and Crucial Algorithms Part-II Mar 2009
Optimization of Preconditioned Parallel Iterative Solvers for Finite-Element Applications using Hybrid Parallel Programming Models on “T2K Open Supercomputer (Tokyo)”[Invited]
NAKAJIMA, Kengo
The 11th International Specialist Meeting on Next Generation Models on Climate Change and Sustainability for High Performance Computing Facilities Mar 2009
Infrastructure for Development of Codes in Scientific Computing on Post-Peta-Scale Systems[Invited]
NAKAJIMA, Kengo
IPAB (Initiative for Parallel Bioinformatics) Open Workshop in Okinawa 2010: "Seeds and Needs for Large Scale Computing 2010" -Next Generation Sequencer : Uniting IT and Biotechnology - Oct 2010
Infrastructure for Application Development on Heterogeneous Parallel Computers,[Invited]
NAKAJIMA, Kengo
Fujitsu Open Petascale Libraries Workshop at SC10 Nov 2010
ppOpen-HPC: Open Source Infrastructure for Development and Execution of Large-Scale Scientific Applications on Post-Petascale Supercomputers with Automatic Tuning (AT)[Invited]
NAKAJIMA, Kengo
International Workshop on Collaborative Development of Simulation Software of Next Generation (CO-DESIGN) Oct 2011
ppOpen-HPC: Open Source Infrastructure for Development and Execution of Large-Scale Scientific Applications on Post-Peta-Scale Supercomputers with Automatic Tuning (AT)
NAKAJIMA, Kengo
ATIP/A*CRC Workshop on Accelerator Technologies for High-Performance Computing: Does Asia Lead the Way? 8 May 2012
Parallel Multigrid Methods on Post-Peta/Exascale Systems[Invited]
NAKAJIMA, Kengo
The 6th Korea-Japan Workshop on Computational Mechanics 31 May 2012
ppOpen-HPC: Open Source Infrastructure for Development and Execution of Large-Scale Scientific Applications on Post-Peta-Scale Supercomputers with Automatic Tuning (AT)[Invited]
NAKAJIMA, Kengo
The First Spain-Japan Workshop on Computational Mechanics 17 Sep 2012
Automatic Tuning of Preconditioned Iterative Solvers with Hybrid Parallel Programming Models[Invited]
NAKAJIMA, Kengo
International Workshop on Collaborative Development of Simulation Software of Next Generation (CO-DESIGN) 25 Oct 2012
ppOpen-HPC: Open Source Infrastructure for Development and Execution of Large-Scale Scientific Applications with Automatic Tuning (AT)[Invited]
NAKAJIMA, Kengo
CUG Seminar (China University of Geosciences) 26 Oct 2012
ppOpen-HPC: Open Source Infrastructure for Development and Execution of Large-Scale Scientific Applications with Automatic Tuning (AT)[Invited]
NAKAJIMA, Kengo
SDSC Seminar, San Diego Supercomputer Center 26 Feb 2013
HPCI towards Exascale Era[Invited]
Nakajima, K., Y. Ishikawa and T. Katagiri
17th Workshop on Sustained Simulation Performance (WSSP 2013) 12 Mar 2013
Automatic Tuning of Preconditioned Iterative Solvers with Hybrid Parallel Programming Models[Invited]
NAKAJIMA, Kengo
Climate 2013 Workshop (The next-generation of climate models and knowledge discoveries through the extreme high-performance simulations and big data) 21 Mar 2013
Parallel Multigrid Method on Post-Peta/Exa Scale Supercomputer Systems
NAKAJIMA, Kengo
Advances in Computational Mechanics (ACM 2013) — A Conference Celebrating the 70th Birthday of Thomas J.R. Hughes: Parallelism in Matrix Computations 25 Mar 2013
Automatic Tuning of Parallel Multigrid Solvers with Hybrid Parallel Programming Models
NAKAJIMA, Kengo
Conference on Advanced Topics and Auto Tuning in High Performance Scientific Computing (2013@2HPSC) 28 Mar 2013
Challenges in Sparse Linear Solvers for Post-Peta/Exascale Systems[Invited]
NAKAJIMA, Kengo
Latest Advances in Scalable Algorithms for Large Scale Systems, International Supercomputing Conference (ISC’13) 19 Jun 2013
Challenges in Extreme Engineering Algorithms, ISC High Performance 2016 19 Jun 2016
Development of Large-Scale Scien-tific & Engineering Applications on Post-Peta/Exascale Systems using ppOpen-HPC[Invited]
Kengo Nakajima, Akihiro Ida and Takahiro Katagiri
Enabling Technologies and Simulation Practices for High Performance Computational Mechanics, The 12th World Congress on Computational Mechanics (WCCM XII) 24 Jul 2016
Parallel Iterative Solvers for Ill-conditioned Problems with Heterogeneous Material Properties[Invited]
NAKAJIMA, Kengo
NCU Mathematics Seminar, National Central University 3 Nov 2016
[6-67] Kengo Nakajima, Parallel Iterative Solvers with Preconditioning in the Post-Moore Era[Invited]
NAKAJIMA, Kengo
TIMS Seminar on Scientific Computing, National Taiwan University 14 Nov 2016
Communication/Synchronization Avoiding/Reducing in Krylov Iterative Solvers on Multicore/Manycore Clusters -Early Case Studies on Oakforest-PACS with Intel Xeon Phi[Invited]
NAKAJIMA, Kengo
Berkeley Lab Computing Sciences Seminar (Lawrence Berkeley National Laboratory) 20 Jan 2017
Accelerated Computing Activities at ITC/University of Tokyo[Invited]
NAKAJIMA, Kengo
ADAC-3 (Accelerated Data Analytics and Computing) Workshop 25 Jan 2017
Application Development Framework for Manycore Architectures in Exascale/Post-Moore Era
NAKAJIMA, Kengo
2017 SIAM Conference on Computational Science and Engineering (SIAM CSE17) 3 Mar 2017
Hiding communications in preconditioned Krylov iterative solvers on multicore/manycore clusters
NAKAJIMA, Kengo
2017 Conference on Advanced Topics and Auto Tuning in High Performance Scientific Computing (2017 ATAT in HPSC) 11 Mar 2017
Parallel Preconditioning Method for Iterative Linear Solvers on Multicore/Manycore Clusters[Invited]
NAKAJIMA, Kengo
IACM 19th International Conference on Finite Elements in Flow Problems - FEF 2017: Iterative Methods and Parallel Computing 4 Apr 2017
Communication-Computation Overlapping with Dynamic Loop Scheduling for Preconditioned Parallel Iterative Solvers on Multicore/Manycore Clusters[Invited]
NAKAJIMA, Kengo
Berkeley Lab Computing Science Seminar (Lawrence Berkeley National Laboratory) 9 Jun 2017
Parallel Preconditioned Iterative Solvers on Manycore Architectures[Invited]
Kengo Nakajima, Toshihiro Hanawa and Tetsuya Hoshino
MS26: Computing Bulks of Inner Eigenpairs of Large Sparse Matrices: From Applications and Algorithms to Performance and Software Engineering (2/2), PASC17 (The Platform for Advanced Scientific Computing) 27 Jun 2017
Development of Large-Scale Scientific & Engineering Applications on Post-Peta/Exascale Systems using ppOpen-HPC[Invited]
Kengo Nakajima, Akihiro Ida, Masatoshi Kawai, and Takahiro Katagiri
APSCIT 2017 Annual Meeting (Asia Pacific Society for Computing and Information Technology 29 Jul 2017
