The Last Journey. I. An Extreme-Scale Simulation on the Mira Supercomputer

Understand

The Last Journey is a large-volume, gravity-only, cosmological N-body simulation evolving more than 1.24 trillion particles in a periodic box with a side-length of 5.025Gpc.

• It was implemented using the HACC simulation and analysis framework on the BG/Q system, Mira.
• The cosmological parameters are chosen to be consistent with the results from the Planck satellite.
• A range of analysis tools have been run in situ to enable a diverse set of science projects, and at the same time, to keep the resulting data amount manageable.