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Paper detail

Nyx: A Massively Parallel AMR Code for Computational Cosmology

We present a new N-body and gas dynamics code, called Nyx, for large-scale cosmological simulations. Nyx follows the temporal evolution of a system of discrete dark matter particles gravitationally coupled to an inviscid ideal fluid in an expanding universe. The gas is advanced in an Eulerian framework with block-structured adaptive mesh refinement (AMR); a particle-mesh (PM) scheme using the same grid hierarchy is used to solve for self-gravity and advance the particles. Computational results demonstrating the validation of Nyx on standard cosmological test problems, and the scaling behavior of Nyx to 50,000 cores, are presented.

preprint2013arXivOpen access
Ann AlmgrenJohn BellMike LijewskiZarija LukićEthan Van Andel
astro-ph.COastro-ph.IM
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Ann AlmgrenJohn BellMike LijewskiZarija LukićEthan Van Andel

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