- Home
- Register
- Attend
- Program
- Technical Program Overview
- SC14 Schedule
- Awards
- Birds-of-a-Feather Sessions (BOFs)
- Emerging Technologies
- Invited Talks
- Panels
- Papers
- Posters
- Scientific Visualization Showcase
- Tutorials
- Workshops
- Doctoral Showcase Program
- HPC Matters Plenary
- Keynote
- SC14 Archive
- SC14 Conference Program
- Tech Program Receptions
- Exhibit
- Engage
- Media
- Media Overview
- Media Releases
- Announcing the Second Test of Time Award Winner
- CDC to Present at Supercomputing 2014
- Finalists Compete for Coveted ACM Gordon Bell Prize in High Performance Computing
- Four Ways Supercomputing Is Changing Lives: From Climate Modeling to Manufacturing Consumer Goods
- Join the Student Cluster Competition
- New Orleans Becomes Home to Fastest Internet Hub in the World
- SC14 Announces New Plenary to Focus on the Importance of Supercomputers in Society
- SC14 Registration Opens, Technical Program Goes Live
- Supercomputing 2014 Recognizes Outstanding Achievements in HPC
- Supercomputing 2014 Sets New Records
- Supercomputing Invited Plenary Talks
- Supercomputing Unveils Ground-Breaking Innovations and the World’s Fastest Computer Network
- World’s Fastest Computer Network Coming to New Orleans
- SC14 Logo Usage
- SC14 Media Partners
- Social Media
- Newsletters
- SC14 Blog
- Opening Press Briefing
- SC Photograph and Film Acceptable Use Policy
- Media Registration
- Video Gallery
- SCinet
SCHEDULE: NOV 16-21, 2014
When viewing the Technical Program schedule, on the far righthand side is a column labeled "PLANNER." Use this planner to build your own schedule. Once you select an event and want to add it to your personal schedule, just click on the calendar icon of your choice (outlook calendar, ical calendar or google calendar) and that event will be stored there. As you select events in this manner, you will have your own schedule to guide you through the week.
Performance Optimization and Evaluation of a Global Climate Application Using a 440m Horizontal Mesh on the K Computer
SESSION: Poster Reception
EVENT TYPE: Posters
TIME: 5:15PM - 7:00PM
AUTHOR(S):Masaaki Terai, Hisashi Yashiro, Kiyotaka Sakamoto, Shin-ichi Iga, Hirofumi Tomita, Masaki Satoh, Kazuo Minami
ROOM:New Orleans Theater Lobby
ABSTRACT:
Using almost all the compute nodes on the K computer, we evaluated the performance of NICAM, a climate application for a high-resolution global atmospheric simulation study. First, based on profiling results, we improved single node performance using kernel programs extracted from the application, resulting in increases in the peak performance ratio of the kernel programs. Thereafter, we applied the optimization results to the application, and evaluated the performance by weak scaling. In the evaluation, to retain the same problem size per node, we reduced the horizontal mesh size as the number of nodes increased, decreasing it to 0.44km with 81,920 nodes. Although we achieved good scalability of the dynamical step, the elapsed time of the physical step increased with the number of nodes owing to inter-node load imbalances in the cloud microphysics. Finally, the peak performance ratio of the main loop of NICAM reached 8.3% with 81,920 nodes.
Chair/Author Details:
Masaaki Terai - RIKEN
Hisashi Yashiro - RIKEN
Kiyotaka Sakamoto - Fujitsu
Shin-ichi Iga - RIKEN
Hirofumi Tomita - RIKEN
Masaki Satoh - University of Tokyo
Kazuo Minami - RIKEN
Click here to download .ics calendar file
