First-ever full observable universe simulation

Author

Alimi, Jean-Michel ; Bouillot, Vincent ; Rasera, Yann ; Reverdy, Vincent ; Corasaniti, Pier-Stefano ; Balmes, Irene ; Requena, Stephane ; Delaruelle, Xavier ; Richet, J.-N.

Author_Institution

LUTh, Univ. Paris Diderot, Meudon, France

fYear

2012

fDate

10-16 Nov. 2012

Firstpage

1

Lastpage

11

Abstract

We have performed the first-ever numerical N-body simulation of the full observable universe (DEUS "Dark Energy Universe Simulation" FUR "Full Universe Run"). This has evolved 550 billion particles on an Adaptive Mesh Refinement grid with more than two trillion computing points along the entire evolutionary history of the universe and across 6 order of magnitudes length scales, from the size of the Milky Way to that of the whole observable Universe. To date, this is the largest and most advanced cosmological simulation ever run. It provides unique information on the formation and evolution of the largest structure in the universe and an exceptional support to future observational programs dedicated to mapping the distribution of matter and galaxies in the universe. The simulation has run on 4752 (of 5040) thin nodes of BULL supercomputer CURIE, using more than 300 TB of memory for 10 million hours of computing time. About 50 PBytes of data were generated throughout the run. Using an advanced and innovative reduction workflow the amount of useful stored data has been reduced to 500 TBytes.

Keywords

N-body simulations (astronomical); astronomy computing; cosmology; grid computing; mesh generation; BULL supercomputer; Milky Way; adaptive mesh refinement grid; cosmological simulation; first-ever full observable universe simulation; first-ever numerical N-body simulation; observational programs; Adaptation models; Computational modeling; Dark energy; Equations; Mathematical model; Numerical models; Standards;

fLanguage

English

Publisher

ieee

Conference_Titel

High Performance Computing, Networking, Storage and Analysis (SC), 2012 International Conference for

Conference_Location

Salt Lake City, UT

ISSN

2167-4329

Print_ISBN

978-1-4673-0805-2

Type

conf

DOI

10.1109/SC.2012.58

Filename

6468473