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Events | イベント
本チームが主催したイベント（セミナー・ワークショップ）の情報を掲載しています．
Seminar | セミナー
December 3, 2025, Dr. Keita Teranishi, Oak Ridge National Laboratory, USA
title
Toward Productive HPC for the Post-Exascale Era
abstract
With the U.S. Department of Energy’s Exascale Computing Project now complete, the challenge shifts from reaching exascale to advancing applications and software on rapidly evolving, heterogeneous systems. AI integration and performance portability are often treated as separate goals, but in practice they converge on a single imperative: productivity—time-to-insight per unit of human and machine effort. This seminar lays out a productivity-first roadmap. I’ll show how AI-assisted programming systems—ChatHPC for guided code synthesis, refactoring, and verification —shorten the loop from algorithm design to validated results while preserving scientific trust via automated testing and continuous integration. I’ll also discuss the rise of Julia and Mojo as high-level languages that retain low-level control. With composable ecosystems, JIT/AOT options, and maturing multi-backend support, they enable single-source paths to CPUs, GPUs, and emerging accelerators, reducing porting costs and long-term maintenance without sacrificing performance. I’ll share recent ORNL activities evaluating their performance and portability across modern HPC platforms. We close with ongoing ORNL efforts: ChatHPC, JACC (Julia for Accelerators), and exploration of LLVM IR as a foundation for portable, robust HPC programming.
time and place
December 3, Wednesday, 2025, 13:00 - 14:00
Toward Productive HPC for the Post-Exascale Era
abstract
With the U.S. Department of Energy’s Exascale Computing Project now complete, the challenge shifts from reaching exascale to advancing applications and software on rapidly evolving, heterogeneous systems. AI integration and performance portability are often treated as separate goals, but in practice they converge on a single imperative: productivity—time-to-insight per unit of human and machine effort. This seminar lays out a productivity-first roadmap. I’ll show how AI-assisted programming systems—ChatHPC for guided code synthesis, refactoring, and verification —shorten the loop from algorithm design to validated results while preserving scientific trust via automated testing and continuous integration. I’ll also discuss the rise of Julia and Mojo as high-level languages that retain low-level control. With composable ecosystems, JIT/AOT options, and maturing multi-backend support, they enable single-source paths to CPUs, GPUs, and emerging accelerators, reducing porting costs and long-term maintenance without sacrificing performance. I’ll share recent ORNL activities evaluating their performance and portability across modern HPC platforms. We close with ongoing ORNL efforts: ChatHPC, JACC (Julia for Accelerators), and exploration of LLVM IR as a foundation for portable, robust HPC programming.
time and place
December 3, Wednesday, 2025, 13:00 - 14:00
November 25, 2024, Prof. Shunhua Chen, School of Marine Engineering and Technology, Sun Yat-sen University, China
speaker
Prof. Shunhua CHEN, School of Marine Engineering and Technology, Sun Yat-sen University, China ResearchGate, Affiliation
title
Crack simulations of quasi-brittle materials and composite structures
abstract
The short talk is to present numerical algorithms for crack behaviors of quasi-brittle materials and laminated composite structures. To be more specific, a series of cohesive zone based numerical algorithms that have been developed in recent years will be introduced. In addition, this talk will present some related engineering applications that are focused in our team as well. time and place Nov. 25, Monday, 2024, 10:00 - 11:30 @ R104-2
Prof. Shunhua CHEN, School of Marine Engineering and Technology, Sun Yat-sen University, China ResearchGate, Affiliation
title
Crack simulations of quasi-brittle materials and composite structures
abstract
The short talk is to present numerical algorithms for crack behaviors of quasi-brittle materials and laminated composite structures. To be more specific, a series of cohesive zone based numerical algorithms that have been developed in recent years will be introduced. In addition, this talk will present some related engineering applications that are focused in our team as well. time and place Nov. 25, Monday, 2024, 10:00 - 11:30 @ R104-2
Septemnber 18, 2024, Dr. Pierre Jolivet, Sorbonne Universite, CNRS, LIP6, France
Title and abstract are found in R-CCS Cafe Special Edition (2) (Sep 18, 2024)
July 26, 2024, Dr. Keita Teranishi, Oak Ridge National Laboratory, USA
Title and abstract are found in R-CCS Cafe Special Edition (Jul 26, 2024)
Workshops | ワークショップ
- January 29-30, 2020, Workshop on Large-scale Parallel Numerical Computing Technology (LSPANC 2020 January) -HPC and Computer Arithmetics toward Minimal-Precision Computing-
- June 6-7, 2019, Workshop on Large-scale Parallel Numerical Computing Technology (LSPANC 2019 June) -Technologies and Tools for Reliable, Accurate, and Mixed-Precision Computations-
- March 25-26, 2019, 大規模並列数値計算技術に関する研究集会 (LSPANC2019 March) -疎行列ソルバにおける最近の話題について-
- December 10, 2018, 大規模並列数値計算技術に関する研究集会 Workshop on Largescale Parallel Numerical Computing Technology (LSPANC 2018)
- January 22-23, 2018, 科研費基盤B課題「O(1億)コア環境におけるスケーラブルな数値計算ソフトウェアの理論と応用」ワークショップ
- August 3-4, 2017, 研究集会「テンソルネットワーク(TN)スキームとテンソル計算ソフトウェアの周辺」
- March 27-28, 2017, 第5回 大規模並列数値計算技術に関する研究集会 5th Workshop on Largescale Parallel Numerical Computing Technology (LSPANC 2017) -多倍長計算と精度保証-
- April 26-28, 2017, AICS LPNCT OpenCL Hackathon 2017
- March 28, 2017, KMATHLIB 講習会