Masaki Tsukamoto, Yoshiko Hanada, Masahiro Nakao, Keiji Yamamoto.
``Optimization Algorithm with Automatic Adjustment of the Number of Switches in the Order/Radix Problem'',
IEICE TRANSACTIONS on Information and Systems, Dec. 2023. doi:10.1587/transinf.2023PAP0004
Ksander Ejjaaouani, Oivier Aumage, Julien Bigot, Michel Méhrenberger, Hitoshi Murai, Masahiro Nakao, Mitsuhisa Sato.
``InKS: a programming model to decouple algorithm from optimization in HPC codes'',
The Journal of Supercomputing, Jul. 2019. doi:10.1007/s11227-019-02950-2.
Junya Arai, Masahiro Nakao, Yuto Inoue, Kanto Teranishi, Koji Ueno, Keiichiro Yamamura, Mitsuhisa Sato, Katsuki Fujisawa.
``Doubling Graph Traversal Efficiency to 198 TeraTEPS on the Supercomputer Fugaku'', SC24, Atlanta, USA, Nov. 2024.
Razil Tahir, Jorji Nonaka, Ken Iwata, Taisei Matsushima, Naohisa Sakamoto, Chongke Bi, Masahiro Nakao, Hitoshi Murai.
``Analysis Towards Energy-Aware Image-based In Situ Visualization on the Fugaku'',
HPC Asia 2024, Aichi, Japan, Jan. 2024.
Masahiro Nakao, Hidetomo Kaneyama, Masaru Nagaku, Ikki Fujiwara, Atsuko Takefusa, Shin’ichi Miura, Keiji Yamamoto.
``Introducing Open OnDemand to Supercomputer Fugaku'',
10th International Workshop on HPC User Support Tools (HUST2023), Denver, USA, Nov. 2023. [PDF][Slide]
Taisuke Boku, Ryuta Tsunashima, Ryohei Kobayashi, Nrohisa Fujita, Seyong Lee, Jeffrey S. Vetter, Hitoshi Murai, Masahiro Nakao, Miwako Tsuji, Mitsuhisa Sato.
``OpenACC unified programming environment for multi-hybrid acceleration with GPU and FPGA'',
H3 (HPC on Heterogeneous Hardware) ISC2023 Workshop, May, 2023.
Michael Hennecke, Motohiko Matsuda, Masahiro Nakao, Kento Sato.
``Evaluating DAOS Storage on ARM64 Clients.''
IWAHPCE2023, Mar. 2023.
Masahiro Nakao, Koji Ueno, Katsuki Fujisawa, Yuetsu Kodama, Mitsuhisa Sato.
``Performance of the Supercomputer Fugaku for Breadth-First Search in Graph500 Benchmark.''
ISC 2021, Jun. 2021. [Slide]
Ryuta Tsunashima, Ryohei Kobayashi, Norihisa Fujita, Taisuke Boku, Seyong Lee, Jeffrey Vetter, Hitoshi Murai, Masahiro Nakao, Mitsuhisa Sato.
``OpenACC unified programming environment for GPU and FPGA multi-hybrid acceleration,''
13th International Symposium on High-level Parallel Programming and Applications,
Porto, Portugal, Jul. 2020.
Masahiro Nakao, Hitoshi Murai, Mitsuhisa Sato.
``Parallelization of All-Pairs-Shortest-Path Algorithms in Unweighted Graph,''
HPC Asia 2020, Fukuoka, Japan,
Jan. 2020. [Slide]
Masahiro Nakao, Hitoshi Murai, Mitsuhisa Sato.
``A Method for Order/Degree Problem Based on Graph Symmetry and Simulated Annealing with MPI/OpenMP Parallelization'',
HPC Asia 2019, Guangzhou, China,
Jan. 2019. [Slide]
Masahiro Nakao, Hitoshi Murai, Mitsuhisa Sato.
``Multi-accelerator extension in OpenMP based on PGAS model'',
HPC Asia 2019, Guangzhou, China,
Jan. 2019. [Slide]
Akihiro Tabuchi, Masahiro Nakao, Hitoshi Murai, Taisuke Boku, Mitsuhisa Sato.
``Performance Evaluation for a Hydrodynamics Application in XcalableACC PGAS Language for Accelerated Clusters'',
Workshop on PGAS programming models: Experiences and Implementations, Tokyo, Japan,
Jan. 2018.
Masahiro Nakao, Hitoshi Murai, Taisuke Boku, Mitsuhisa Sato.
``Performance Evaluation for Omni XcalableMP Compiler on Many-core Cluster System based on Knights Landing'',
IXPUG Workshop Asia 2018, Tokyo, Japan,
Jan. 2018.
[Slide]
Hidetoshi Iwashita, Masahiro Nakao, Hitoshi Murai, Mitsuhisa Sato.
``A Source-to-Source Translation of Coarray Fortran with MPI for High Performance'',
HPC Asia 2018, Tokyo, Japan,
Jan. 2018.
Hitoshi Murai, Masahiro Nakao, Hidetoshi Iwashita, Mitsuhisa Sato.
``Preliminary Performance Evaluation of Coarray-based Implementation of Fiber Miniapp Suite using XcalableMP PGAS Language'',
Second Annual PGAS Applications Workshop (PAW), CO, USA,
Nov. 2017.
Masahiro Nakao, Hitoshi Murai, Hidetoshi Iwashita, Akihiro Tabuchi, Taisuke Boku, Mitsuhisa Sato.
``Implementing Lattice QCD Application with XcalableACC Language on Accelerated Cluster'',
IEEE Cluster 2017, HI, USA,
Sep. 2017. (acceptance rate: 21.8%)
[Slide]
Akihiro Tabuchi, Masahiro Nakao, Hitoshi Murai, Taisuke Boku and Mitsuhisa Sato.
``Implementation and Evaluation of One-sided PGAS Communication in XcalableACC for Accelerated Clusters'',
17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017). Madrid, Spain,
May 2017.
Mitsuhisa Sato, Hitoshi Murai, Masahiro Nakao, Hidetoshi Iwashita, Jinpil Lee, Akihiro Tabuchi.
``Omni Compiler and XcodeML: An Infrastructure for Source-to-Source Transformation'',
Platform for Advanced Scientific Computing Conference (PASC16), SwissTech Convention Center EPFL, Switzerland,
Jun. 2016.
Tetsuya Odajima, Taisuke Boku, Toshihiro Hanawa, Hitoshi Murai, Masahiro Nakao, Akihiro Tabuchi, Mitsuhisa Sato.
``Hybrid Communication with TCA and InfiniBand on A Parallel Programming Language XcalableACC for GPU Clusters'',
Workshop Series on Heterogeneous and Unconventional Cluster Architectures and Applications (HUCAA), IL, USA,
Sep. 2015.
Masahiro Nakao, Hitoshi Murai, Takenori Shimosaka, Akihiro Tabuchi, Toshihiro Hanawa, Yuetsu Kodama, Taisuke Boku, Mitsuhisa Sato.
``XcalableACC: Extension of XcalableMP PGAS Language using OpenACC for Accelerator Clusters'',
Workshop on accelerator programming using directives (WACCPD), New Orleans, LA, USA,
Nov. 2014.
[Slide]
Masahiro Nakao, Hitoshi Murai, Takenori Shimosaka, Mitsuhisa Sato.
``Productivity and Performance of the HPC Challenge Benchmarks with the XcalableMP PGAS language'',
7th International Conference on PGAS Programming Models, Edinburgh, Scotland, UK,
Oct. 2013. [Paper] [Slide]
Akihiro Tabuchi, Masahiro Nakao, Mitsuhisa Sato.
``A Source-to-Source OpenACC compiler for CUDA'',
HeteroPar'2013, Aachen, Germany,
Aug. 2013.
Masahiro Nakao, Tomoyuki Hiroyasu, Mitsunori Miki, Hisatake Yokouchi, Masato Yoshimi.
``Real-coded Estimation of Distribution Algorithm by Using Probabilistic Models with Multiple Learning Rates'',
2nd Workshop on Computational Optimization, Modelling and Simulation (COMS 2011), Nanyang Technological University, Singapore,
Jun. 2011.
Masahiro Nakao, Jinpil Lee, Taisuke Boku, Mitsuhisa Sato.
``XcalableMP Implementation and Performance of NAS Parallel Benchmarks'',
Fourth Conference on Partitioned Global Address Space Programming Model (PGAS10), New York, USA,
Oct. 2010.
Tomoyuki Hiroyasu, Yuta Tomatsu, Masahiro Nakao, Mitsunori Miki, Hisatake Yokouchi, Masato Yoshimi.
``Simulated Annealing with Search Mechanisms of Interpolation and Extrapolation Domain'',
International Forum on Multimedia and Image Processing (IFMIP), Kobe, Hyogo, Japan,
Sep. 2010.
Takafumi Watanabe, Masahiro Nakao, Tomoyuki Hiroyasu, Michihiro Koibuchi, Tomohiro Otsuka.
``The Impact of Topology and Link Aggregation on PC Cluster with Ethernet'', IEEE Cluster 2008, No.CFP08235-CDR(2008) , pp.280-285, Japan,
Oct. 2008.
(査読なし/口頭)
Ryuta Tsunashima, Ryohei Kobayashi, Norihisa Fujita, Taisuke Boku, Seyong Lee, Jeffrey Vetter, Hitoshi Murai, Masahiro Nakao, Mitsuhisa Sato,
``GPU and FPGA Unified Programming of Astrophysics Real Application with OpenACC'',
The 4th R-CCS International Symposium (Online),
Feb. 2022.
Masahiro Nakao, Hitoshi Murai, Jinpil Lee, Tetsuya Odajima, Ryuya Tsunashima, Yutaka Watanabe, Taisuke Boku.
``Extension for stencil calculation of parallel language XcalableMP``,
13th symposium on Discovery, Fusion, Creation of New Knowledge by Multidisciplinary Computational Sciences (Online),
Oct. 2021.
Mitsuhisa Sato, Masahiro Nakao, Tetsuya Odajima and Yuetsu Kodama.
``The FLAGSHIP2020 project and Fugaku supercomputer'',
5th ZIB-RIKEN-IMI-ISM MODAL Workshop on Optimization, Data Analysis and HPC in AI (Online),
Sep. 2021.
Masahiro Nakao,
``Performance of the Supercomputer Fugaku for Graph500 Benchmark'',
The 3rd R-CCS International Symposium (Online),
Feb. 2021.
Masahiro Nakao,
``Development of parallel language XcalableMP 2.0 with high performance portability'',
CCS International Symposium 2020 (Online),
Oct. 2020.
Taisuke Boku, Hitoshi Murai, Masahiro Nakao, Mitsuhisa Sato, Akihiro Tabuchi.
``XcalableACC: Highly Productive Accelerated Programming Language for Extreme-Scale Computing'',
SIAM Conference on Parallel Processing for Scientific Computing (PP18), Tokyo, Japan,
Mar. 2018.
Masahiro Nakao.
``Evaluation of Productivity and Performance of the XcalableACC programming language'',
LENS2015 International Workshop, Tokyo Japan,
Oct. 2015.
Masahiro Nakao, Hitoshi Murai, Hidetoshi Iwashita, Takenori Shimosaka, Akihiro Tabuchi, Taisuke Boku, Mitsuhisa Sato.
SC14 The 2014 HPC Challenge Awards BoF, New Orleans, LA, USA,
Nov. 2014.
[Paper] [Slide] (HPC Challenge Class 2, Best Performance Award)
Masahiro Nakao, Hitoshi Murai, Takenori Shimosaka, Mitsuhisa Sato.
SC13 The 2013 HPC Challenge Awards BoF, Denver, Colorado, USA,
Nov. 2013.
[Paper] [Slide] (HPC Challenge Class 2, Award)
Masahiro Nakao, Hitoshi Murai, Takenori Shimosaka, Mitsuhisa Sato.
SC12 The 2012 HPC Challenge Awards BoF, Salt Lake City, Utah, USA,
Nov. 2012.
[Paper] [Slide] (Selected as a finalist)
Jinpil Lee, Masahiro Nakao, Mitsuhisa Sato.
SC10 The 2010 HPC Challenge Awards BoF, New Orleans, Louisiana, USA,
Nov. 2010. (Selected as a finalist)
Masahiro Nakao, Mitsuhisa Sato.
``Performance of CG-POP on the K computer'',
G8 ECS workshop, Boulder, USA,
Mar. 2013.
Masahiro Nakao, Jinpil Lee, Taisuke Boku, Mitsuhisa Sato.
``XcalableMP Ver.1.0: Highly Productive Parallel Programming Language'',
International Workshop on Peta-Scale Computing Programming Environment, Languages and Tools (WPSE 2012), Kobe, Hyogo, Japan,
Feb. 2012.
[Slide]
(査読あり/ポスター)
Jorji Nonaka, Daichi Obinata, Hiroyuki Ito, Atsushi Toyoda, Naohisa Sakamoto, Masahiro Nakao, Hitoshi Murai, Keiji Yamamoto, Masaaki Terai, Tomohiro Kawanabe, Shunji Uno, Naoyuki Fujita, Toshihiko Kai, Fumiyoshi Shoji, Takanori Haga, Seiji Tsutsumi, Manabu Motokawa, Atsuhi Fujino.
``On the Building of a Common In-Situ Visualization Environment for Arm A64FX Supercomputers'',
Cluster 2024, Hyogo, Japan, Sep. 2024.
Masahiro Nakao, Koji Ueno, Katsuki Fujisawa, Yuetsu Kodama, Mitsuhisa Sato.
``Graph500 benchmark with automatic performance tuning'',
HPC Asia 2024, Aichi, Japan, Jan. 2024. [poster]
Masahiro Nakao, Shin'ichi Miura, Keiji Yamamoto.
``Introduction of Open OnDemand to Supercomputer Fugaku'',
HPC Asia 2023, Singapore, Mar. 2023. [poster]
Jorji Nonaka, Masaaki Terai, Masahiro Nakao, Keiji Yamamoto, Hitoshi Murai, Fumiyoshi Shoji.
``Towards an Easy-to-Use Visualization Environment on the Fugaku'',
HPC Asia 2023, Singapore, Mar. 2023.
Masahiro Nakao, Koji Ueno, Katsuki Fujisawa, Yuetsu Kodama, Mitsuhisa Sato.
``Performance Evaluation of Supercomputer Fugaku using Breadth-First Search Benchmark in Graph500,''
IEEE Cluster 2020, Online, Sep. 2020.
Masahiro Nakao, Hitoshi Murai, Mitsuhisa Sato, Yoshimichi Andoh, Susumu Okazaki.
``Performance improvement of MODYLAS using Remote Direct Memory Access on the K computer,''
International Conference on Parallel Processing, Kyoto, Japan, Aug. 2019. [poster]
Masahiro Nakao, Hitoshi Murai, Akihiro Tabuchi, Taisuke Boku, Mitsuhisa Sato.
``Performance Evaluation of NICAM-DC-MINI using XcalableACC on Accelerated Cluster'',
HPC Asia 2018 Poster, Tokyo, Japan,
Jan. 2018.
Hitoshi Murai, Masahiro Nakao, Takenori Shimosaka, Akihiro Tabuchi, Taisuke Boku, Mitsuhisa Sato.
``XcalableACC - a Directive-based Language Extension for Accelerated Parallel Computing'',
SC14 poster, New Orleans, LA, USA,
Nov. 2014.
(査読なし/ポスター)
Razil Bin Tahir, Jorji Nonaka, Ken Iwata, Taisei Matsushima, Naohisa Sakamoto, Chongke Bi, Masahiro Nakao, Hitoshi Murai.
``Towards PowerAPI and KVS-based Energy-Aware Image-based In-Situ Visualization on the Fugaku'',
The 6th R-CCS International Symposium, Jan. 2024.
Masahiro Nakao, Masaki Tsukamoto, Kosuke Kakizako, Yoshiko Hanada, Keiji Yamamoto.
``Development of Graph Library and Optimization Algorithm for Order/Radix Problem'',
CCS International Symposium 2023, Tsukuba, Ibaraki, Japan, Oct. 2023. [poster]
Jorji Nonaka, Masaaki Terai, Masahiro Nakao, Keiji Yamamoto, Hitoshi Murai, Fumiyoshi Shoji, Naohisa Sakamoto.
``Large Data Visualization Environment on the Fugaku'',
The 5th R-CCS International Symposium, Kobe, Hyogo, Japan,
Feb. 2023.
Masahiro Nakao, Maaki Sakai, Yoshiko Hanada, Hitoshi Murai, Mitsuhisa Sato.
``Construction Method for Low-Latency Interconnection Network using Simulated Annealing'',
The 2nd R-CCS International Symposium, Kobe, Hyogo, Japan,
Feb. 2020.
Masahiro Nakao.
``Multi-Accelerator Extension in OpenMP based on PGAS Model'',
CCS International Symposium 2019, Tsukuba, Ibaraki, Japan,
Oct. 2019.
Masahiro Nakao, Hitoshi Murai, Jinpil Lee, Tetsuya Odajima, Yutaka Watanabe, Taisuke Boku.
``Evaluation of Lattice QCD code using XcalableACC parallel language'',
CCS International Symposium 2018, Tsukuba, Ibaraki, Japan,
Oct. 2018.
Masahiro Nakao, Hitoshi Murai, Hidetoshi Iwashita, Akihiro Tabuchi, Taisuke Boku, Mitsuhisa Sato.
``Productivity and Performance of XcalableACC Language for Acceralated Clusters'',
The 7th AICS International Symposium, Kobe, Hyogo, Japan,
Feb. 2017. [Poster]
Masahiro Nakao.
``XcalableACC: A Parallel Programming Language for Accelerated Clusters'',
The 6th AICS International Symposium, Kobe, Hyogo, Japan,
Feb. 2016. [Poster]
Keisuke Tsugane, Masahiro Nakao, Jinpil Lee, Hitoshi Murai, Mitsuhisa Sato.
``Proposal for Dynamic Task Parallelism in PGAS Language XcalableMP'',
The 6th AICS International Symposium, Kobe, Hyogo, Japan,
Feb. 2016.
Hitoshi Murai, Masahiro Nakao, Takenori Shimosaka, Mitsuhisa Sato.
``Implementation and Evaluation of HPC Challenge Benchmarks with the Omni XcalableMP compiler'',
The 3rd AICS International Symposium, Kobe, Hyogo, Japan,
Feb. 2013.
SC17 Research Exhibition in Booth #557 PGAS, Denver, Co, USA, Nov. 2017. [Poster]
CEA-RIKEN HPC School, ``XcalableMP Tutorial'', Maison de la Simulation, Saclay, France,Sep. 2017
XcalableMP利用講習会,公益財団法人 計算科学振興財団(兵庫),2016年12月
SC16 Research Exhibition in Booth #537 PGAS, Salt Lake City, Utah, USA, Nov. 2016. [Poster]
XcalableMP利用講習会,公益財団法人 計算科学振興財団(兵庫),2016年4月
XcalableMP利用講習会,東北大学 サイバーサイエンスセンター(宮城),2016年2月
XcalableMP利用講習会,公益財団法人 計算科学振興財団(兵庫),2016年1月
XcalableMP利用講習会,筑波大学 計算科学研究センター(茨城),2015年12月
XcalableMP利用講習会,大阪大学 サイバーメディアセンター(大阪),2015年10月
SC15 Research Exhibition in Booth #723 PGAS, Austin, TX, USA, Nov. 2015. [Poster]
XcalableMP利用講習会,公益財団法人 計算科学振興財団(兵庫),2014年12月
SC14 Research Exhibition in Booth #2255 PGAS, New Orleans, LA, USA, Nov. 2014. [Poster]
SC14 Research Exhibition in Booth #2231 RIKEN AICS, New Orleans, LA, USA, Nov. 2014. [Leaflet 12]
XcalableMP利用講習会,公益財団法人 計算科学振興財団(兵庫),2014年9月
XcalableMP利用講習会,大阪大学 レーザーエネルギー学研究センター(大阪),2014年5月
``Tuning techniques and performance optimization for CGPOP, NICAM and CICE applications on the K computer'', G8ECS meeting, Kobe, japan Mar. 2014.
``Implementation and evaluation of the HPC Challenge Benchmarks with the XcalableMP PGAS Language on the K computer'', AICS Cafe, 2014年2月,理化学研究所 計算科学研究機構(兵庫),2014年2月
XcalableMP利用講習会,理化学研究所 計算科学研究機構(兵庫),2013年12月
SC13 Research Exhibition in Booth #2519 Center for Computational Sciences, University of Tsukuba, Denver, Colorado, USA, Nov. 2013. [Poster]
SC13 Research Exhibition in Booth #432 PGAS, Denver, Colorado, USA, Nov. 2013. [Poster]
XcalableMP利用講習会,公益財団法人 計算科学振興財団(兵庫),2013年9月
第3回XcalableMP Challenge結果報告,PCクラスタワークショップ in 神戸2013,理化学研究所 計算科学研究機構(兵庫),2013年9月