SC12 Home > SC12 Schedule > SC12 Presentation - A Disc-Based Decomposition Algorithm with Optimal Load Balancing for N-body Simulations

SCHEDULE: NOV 10-16, 2012

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ENTIRE WEEK SATURDAY SUNDAY MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY

A Disc-Based Decomposition Algorithm with Optimal Load Balancing for N-body Simulations

SESSION: Research Poster Reception

EVENT TYPE: Posters and Electronic Posters

TIME: 5:15PM - 7:00PM

SESSION CHAIR: Torsten Hoefler

AUTHOR(S):Akila Gothandaraman, Lee Warren, Thomas Nason

ROOM:East Entrance

ABSTRACT:
We propose a novel disc data decomposition algorithm for N-body simulations and compare its performance against a cyclic decomposition algorithm. We implement the data decomposition algorithms towards the calculation of three-body interactions in the Stillinger-Weber potential for a system of water molecules. The performance is studied in terms of load balance and speedup from the MPI implementations of the two algorithms. We are also currently working on a performance study of the disc decomposition algorithm on graphics processing units (GPUs).

Chair/Author Details:

Torsten Hoefler (Chair) - ETH Zurich

Akila Gothandaraman - University of Pittsburgh

Lee Warren - College of New Rochelle

Thomas Nason - University of Pittsburgh

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