OpenACC User Workshop at SCA2026

Where: Room 803 at Osaka International Convention Center, Japan (Registration to the SCA/HPCAsia 2026 conference is required)

When: 2026/01/26

What: The OpenACC Users Group is an opportunity for OpenACC users, implementors, and supporters to build community and share their successes.

Agenda

Japan Time Slot (JST)	Talk title	Presenter name(s)	Affiliation	Chaired by
09:30 AM - 09:35 AM	Welcome and Introduction	Kazuya Yamazaki, Jeff Larkin	The University of Tokyo, NVIDIA, NVIDIA	Kazuya Yamazaki
9:35 AM - 9:45 AM	OpenACC Specification Update	Jeff Larkin	OpenACC Technical Chair	Kazuya Yamazaki
9:45 AM - 10:20 AM	Compiler Updates (GCC, NVIDIA, HPE)	Thomas Schwinge, Kazuaki Matsumura, David Oehmke	BayLibre, NVIDIA, HPE	Jeff Larkin
10:20 AM - 10:45 AM	OpenACC-based GPU acceleration for the SCALE atmospheric model: status and challenges	Seiya Nishizawa	RIKEN	Kazuya Yamazaki
10:45 AM - 11:15 AM	Break
11:15 AM - 11:35 AM	Optimization of the SCALE atmospheric model customized for super-parameterization	Kazuya Yamazaki	The University of Tokyo	Jeff Larkin
11:35 AM - 12:05 AM	Governmental support for GPU-ization on HPC/AI applications toward Fugaku-NEXT and nation-wide GPU systems	Taisuke Boku	Director, Advanced HPC-AI Research and Development Support Center, RIST / Center for Computational Sciences, University of Tsukuba	Kazuya Yamazaki
12:05 AM - 12:30 PM	Solomon: unified schemes for directive-based GPU offloading	Yohei Miki	The University of Tokyo	Kazuya Yamazaki
12:30 PM - 1:30 PM	Lunch Break
1:30 PM - 1:55 PM	GPU optimization of the Japanese high-resolution atmospheric model NICAM with OpenACC	Hisashi Yashiro	National Institute for Environmental Studies, Japan	Sunita Chandrasekaran
1:55 PM - 2:20 PM	An OpenACC-Based Implementation of Lattice H-Matrix–Vector Multiplication on GPU Clusters	Tetsuya Hoshino	Nagoya University	Sunita Chandrasekaran
2:20 PM - 2:45 PM	GPU Acceleration and Performance Optimization of a High-Order Combustion Solver LS-FLOW-HO Using OpenACC	Osamu Watanabe	Japan Aerospace Exploration Agency	Sunita Chandrasekaran
2:45 PM - 3:15 PM	Break
3:15 PM -3:40 PM	Using OpenACC for Scientific Applications	Sunita Chandrasekaran	University of Delaware	Kazuya Yamazaki
3:40 PM - 4:05 PM	GPU-Accelerated Particle Tracing on Unstructured Meshes Using OpenACC	Chun-Sung Jao	National Center for High-performance Computing, Taiwan	Kazuya Yamazaki
4:05 PM - 4:20 PM	Discussions
4:20 PM - 4:30 PM	Workshop Concludes/Closing remarks