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Reports (Research Report) Year : 2009

Cosmological Simulations on a Grid of Computers

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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.
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Dates and versions

inria-00431637 , version 1 (12-11-2009)

Identifiers

  • HAL Id : inria-00431637 , version 1

Cite

Benjamin Depardon, Eddy Caron, Frédéric Desprez, H.M. Courtois, Jeremy Blaizot. Cosmological Simulations on a Grid of Computers. [Research Report] RR-7093, Inria. 2009, pp.15. ⟨inria-00431637⟩
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