O(N logN) parralel N-body simulation using 32 GPUs

This is a simple demonstration of the parralel Barnes-Hut treecode algorithm on 32 GPUs.
Two galaxies are interacting with each other
and collide. Two galaxies are modeled by 33,554,430 particles(4,272,458 for disk, 27,093,640 for halo, 2,188,332 for bulge).
Only the disk and bulge were visualized and the halo was invisible in this simulation result of movie.

--- Demonstration Environment ---
GPU: Nvidia GeForce8800GTS(G92)
GPU kernel: cunbody-1.9 library (http://progrape.jp/cs/)
N-body algorithm: O(N logN) Barnes-Hut treecode algorithm modified for parallel GPUs. The code was based on pC++tree by Prof. J. Makino.
Initial Cond. of data: 33,554,430 particles generated from the GalactICS package
MPI library: mpich2 1.0.7rc1
C++ compiler: gcc 4.1.2
Design languages: C++ and CUDA
CUDA version: CUDA 1.1
OS: CentOS linux version 5.1 (x86_64)
Place: Nagasaki, Japan
LastUpdate: 13 May, 2008
Copyright(c) 2008 by T. Hamada & K. Nitadori

Category:

Science & Technology

Tags:

• CUDA
• GPU
• nbody
• N-body
• treecode
• galaxy
• GPGPU
• geforce
• 8800GTS

[lolpalol2342]

omg i can't wait :3 it's gonna be awsome to colide with other stars and shit *____* :3 it must be trippin!

[kylebrookesjones]

Infact our milkyway galaxy is going to collide with the andromeda galaxy.

[dongmingfei]

my god