Journal
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
Volume 178, Issue 2, Pages 179-188Publisher
IOP PUBLISHING LTD
DOI: 10.1086/590370
Keywords
large-scale structure of universe; methods: numerical
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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.
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