Cosmological Simulations on a Grid of Computers

Benjamin Depardon; Eddy Caron; Frédéric Desprez; H. Courtois; Jeremy Blaizot

inria-00431637, version 1

Cosmological Simulations on a Grid of Computers

Benjamin Depardon ( Author to contact preferably ) ^1, 2, Eddy Caron (, )^a^, 1, Frédéric Desprez ()^b^, 1, H. Courtois ³, Jeremy Blaizot () ⁴

N° RR-7093 (2009)

Abstract: The work presented in this paper aims at restricting the input parameter values of the semi-analytical model used in Galics and MoMaF, so as to derive which parameters influence the most the results, e.g., star forma- tion, feedback and halo recycling efficiencies, etc. Our approach is to proceed empirically: we run lots of simulations and derive the correct ranges of values. The computation time needed is so large, that we need to run on a grid of com- puters. Hence, we model Galics and MoMaF execution time and output files size, and run the simulation using a grid middleware: Diet. All the complexity of accessing resources, scheduling simulations and managing data is harnessed by Diet and hidden behind a web portal accessible to the users.

a – Ecole Normale Supérieure de Lyon - ENS Lyon
b – INRIA
1: Laboratoire de l'Informatique du Parallélisme (LIP)
Université de Lyon – CNRS : UMR5668 – INRIA – École Normale Supérieure - Lyon – Université Claude Bernard - Lyon I
2: GRAAL (INRIA Grenoble Rhône-Alpes / LIP Laboratoire de l'Informatique du Parallélisme)
CNRS : UMR5668 – INRIA – École Normale Supérieure - Lyon – Université Claude Bernard - Lyon I – Laboratoire d'informatique du Parallélisme
3: Institut de Physique Nucléaire de Lyon (IPNL)
CNRS : UMR5822 – IN2P3 – Université Claude Bernard - Lyon I
4: Centre de Recherche Astrophysique de Lyon (CRAL)
CNRS : UMR5574 – INSU – Université Claude Bernard - Lyon I – École Normale Supérieure - Lyon

Collaboration : Grid'5000

inria-00431637, version 1
http://hal.inria.fr/inria-00431637
oai:hal.inria.fr:inria-00431637
From: Benjamin Depardon <>
Submitted on: Thursday, 12 November 2009 16:32:05
Updated on: Monday, 23 April 2012 16:24:19

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