SCHEDULE: NOV 15-20, 2015

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Performance, Power, and Energy of In-Situ and Post-Processing Visualization: A Case Study in Climate Simulation

SESSION: Regular & ACM Student Research Competition Poster Reception

EVENT TYPE: Posters, Receptions, ACM Student Research Competition, Best Poster Finalist

EVENT TAG(S): HPC Beginner Friendly, Regular Poster

TIME: 5:15PM - 7:00PM

SESSION CHAIR(S): Michela Becchi, Manish Parashar, Dorian C. Arnold

AUTHOR(S):Vignesh Adhinarayanan, Scott Pakin, David Rogers, Wu-chun Feng, James Ahrens

ROOM:Level 4 - Lobby

ABSTRACT:

The energy consumption of off-chip data movement for an exascale system is projected to be two orders of magnitude higher than on-chip data movement. However, in an attempt to increase the fidelity of simulation, scientists increasingly run high-resolution simulations, producing large amounts of data for visualization and analysis. Consequently, the I/O subsystem is expected to consume a significant chunk of the power budget available for a supercomputer. To combat this problem, researchers have proposed in-situ techniques where the visualization is performed alongside the simulation using data residing in memory. This study quantifies the savings in performance, power, and energy from adopting in-situ visualization using a climate simulation application on a server-grade node. We offer deeper insights from subsystem-level power measurements and make projections for a larger cluster. We plan to complement these projections with actual measurements on a supercomputer in the final version of the poster.

Chair/Author Details:

Michela Becchi, Manish Parashar, Dorian C. Arnold (Chair) - University of Missouri|Rutgers University|University of New Mexico|

Vignesh Adhinarayanan - Virginia Polytechnic Institute and State University

Scott Pakin - Los Alamos National Laboratory

David Rogers - Los Alamos National Laboratory

Wu-chun Feng - Virginia Polytechnic Institute and State University

James Ahrens - Los Alamos National Laboratory

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