Initial conditions for large cosmological simulations

S. Prunet, C. Pichon, D. Aubert, D. Pogosyan, R. Teyssier, S. Gottloeber

Research output: Contribution to journalArticlepeer-review

148 Scopus citations


This technical paper describes a software package that was designed to produce initial conditions for large cosmological simulations in the context of the Horizon collaboration. These tools generalize E. Bertschinger's Grafic1 software to distributed parallel architectures and offer a flexible alternative to the Grafic2 software for "zoom" initial conditions, at the price of large cumulated CPU and memory usage. The codes have been validated up to resolutions of 40963 and were used to generate the initial conditions of large hydrodynamical and dark matter simulations. They also provide means to generate constrained realizations for the purpose of generating initial conditions compatible with, for example, the local group or the SDSS catalog.

Original languageEnglish (US)
Pages (from-to)179-188
Number of pages10
JournalAstrophysical Journal, Supplement Series
Issue number2
StatePublished - Oct 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • Large-scale structure of universe
  • Methods: Numerical


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