tokens: The authors would like to express special thanks to the Instituto de Fisica Teorica (IFT-UAM/CSIC in Madrid) for its hospitality and support, via the Centro de Excelencia Severo Ochoa Program under Grant No. SEV-2012-0249, during the three-week workshop ‘nIFTy Cosmology’ where this work developed. We further acknowledge the financial support of the University of Western 2014 Australia Research Collaboration Award for ‘Fast Approximate Synthetic Universes for the SKA’, the ARC Centre of Excellence for All Sky Astrophysics (CAASTRO) grant number CE110001020, and the two ARC Discovery Projects DP130100117 and DP140100198. We also recognize support from the Universidad Autonoma de Madrid (UAM) for the workshop infrastructure. AK is supported by the Ministerio de Economía y Competitividad (MINECO) in Spain through grant AYA2012-31101 as well as the Consolider-Ingenio 2010 Programme of the Spanish Ministerio de Ciencia e Innovación (MICINN) under grant MultiDark CSD2009-00064. He also acknowledges support from the Australian Research Council (ARC) grants DP130100117 and DP140100198. He further thanks France Gall for le coeur qui jazze. CP acknowledges support of the Australian Research Council (ARC) through Future Fellowship FT130100041 and Discovery Project DP140100198. WC and CP acknowledge support of ARC DP130100117. EP acknowledges support by the ERC grant ‘The Emergence of Structure during the epoch of Reionization’. STK acknowledges support from STFC through grant ST/L000768/1. RJT acknowledges support via a Discovery Grant from NSERC and the Canada Research Chairs program. Simulations were run on the CFI-NSRIT funded Saint Mary's Computational Astrophysics Laboratory. SB and GM acknowledge support from the PRIN-MIUR 2012 Grant ‘The Evolution of Cosmic Baryons’ funded by the Italian Minister of University and Research, by the PRIN-INAF 2012 Grant ‘Multi-scale Simulations of Cosmic Structures’, by the INFN INDARK Grant and by the ‘Consorzio per la Fisica di Trieste’. IGM acknowledges support from a STFC Advanced Fellowship. PJE is supported by the SSimPL program and the Sydney Institute for Astronomy (SIfA), DP130100117. JIR acknowledges support from SNF grant PP00P2 128540/1. CDV acknowledges financial support from the Spanish Ministry of Economy and Competitiveness (MINECO) through the 2011 Severo Ochoa Program MINECO SEV-2011-0187 and the AYA2013-46886-P grant. AMB is supported by the DFG Research Unit 1254 ‘Magnetisation of Interstellar and Intergalactic Media’ and by the DFG Cluster of Excellence ‘Origin and Structure of the Universe’. RDAN acknowledges the support received from the Jim Buckee Fellowship. The arepo simulations were performed with resources awarded through STFCs DiRAC initiative. The authors thank Volger Springel for helpful discussions and for making arepo and the original gadget version available for this project. G3-PESPH simulations were carried out using resources at the Center for High Performance Computing in Cape Town, South Africa. The authors contributed to this paper in the following ways: FS, GY, FRP, AK, CP, STK and WC formed the core team that organized and analysed the data, made the plots and wrote the paper. AK, GY and FRP organized the nIFTy workshop at which this program was completed. GY supplied the initial conditions. PJE assisted with the analysis. All the other authors, as listed in Section 2 performed the simulations using their codes. All authors had the opportunity to proof read and comment on the paper. The simulation used for this paper has been run on Marenostrum supercomputer and is publicly available at the MUSIC website. 4 This research has made use of NASA's Astrophysics Data System (ADS) and the arXiv preprint server.
ner_tags: O O O O O O O O O O B-Organization I-Organization I-Organization I-Organization B-Organization O B-Location O O O O O O O B-Organization I-Organization I-Organization I-Organization I-Organization I-Organization O B-Grant I-Grant I-Grant O O O B-Event I-Event I-Event O O O O O O O O O O O O B-Grant I-Grant I-Grant I-Grant I-Grant I-Grant I-Grant I-Grant I-Grant I-Grant I-Grant I-Grant I-Grant I-Grant I-Grant I-Grant O B-Organization B-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization B-Organization B-Grant I-Grant I-Grant O O O B-Organization B-Grant I-Grant I-Grant O B-Grant O O O O O O B-Organization I-Organization I-Organization I-Organization B-Organization O O O O B-Person O O O O B-Organization I-Organization I-Organization I-Organization I-Organization B-Organization O O O B-Grant I-Grant O O O O B-Grant I-Grant I-Grant O O B-Location B-Grant I-Grant I-Grant I-Grant I-Grant B-Grant O B-Grant I-Grant I-Grant O O O O O O B-Organization I-Organization I-Organization B-Organization B-Grant I-Grant O B-Grant O O O B-Person I-Person O O O O O B-Person O O O O B-Organization I-Organization I-Organization B-Organization O B-Fellowship I-Fellowship I-Fellowship O B-Grant I-Grant I-Grant B-Person O B-Person O O O B-Organization B-Grant B-Person O O O O B-Organization B-Grant I-Grant I-Grant I-Grant I-Grant I-Grant I-Grant I-Grant I-Grant I-Grant B-Person O O O B-Organization O B-Grant I-Grant B-Person O O O O B-Grant I-Grant O B-Organization O O B-Organization I-Organization I-Organization I-Organization O O O O O B-ComputingFacility O B-ComputingFacility I-ComputingFacility I-ComputingFacility I-ComputingFacility I-ComputingFacility B-Person O B-Person O O O O B-Organization O B-Grant I-Grant I-Grant I-Grant I-Grant I-Grant O O O B-Location B-Organization I-Organization I-Organization I-Organization I-Organization O O B-Organization O B-Grant I-Grant I-Grant I-Grant I-Grant I-Grant O O B-Organization B-Grant I-Grant O O O B-Organization I-Organization I-Organization I-Organization I-Organization I-Organization B-Person O O O O B-Organization B-Fellowship I-Fellowship B-Person O O O O B-Grant I-Grant O O B-Organization I-Organization I-Organization I-Organization B-Organization B-Grant B-Person O O O B-Organization B-Grant I-Grant I-Grant B-Person O O O O O B-Location B-Organization I-Organization I-Organization I-Organization I-Organization B-Organization O O B-Grant I-Grant I-Grant I-Grant I-Grant I-Grant O O B-Grant I-Grant B-Person O O O O B-Organization B-Grant I-Grant I-Grant I-Grant I-Grant I-Grant I-Grant I-Grant I-Grant O O O B-Organization B-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization B-Person O O O O O O B-Fellowship I-Fellowship I-Fellowship O B-Model I-Model O O O O O O B-Organization B-Grant I-Grant O O O B-Person I-Person O O O O O O B-Software O O O B-Software O O O O O B-Model I-Model O O O O O O O B-ComputingFacility I-ComputingFacility I-ComputingFacility I-ComputingFacility I-ComputingFacility O B-Location I-Location I-Location I-Location O O O O O O O O O O B-Person B-Person B-Person B-Person B-Person B-Person O B-Person O O O O O O O O O O O O O O O O O B-Person B-Person O B-Person O O B-Event I-Event O O O O O O B-Person O O O O B-Person O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B-ComputingFacility I-ComputingFacility O O O O O O B-Organization O O O O O O O O B-Archive I-Archive I-Archive I-Archive B-Archive O O B-Archive I-Archive I-Archive