Institute for Advanced Study/Princeton University Early Universe/Cosmology Lunch Discussion

Perfectly Parallel Cosmological Simulations Using Spatial Comoving Lagrangian Acceleration

I will introduce a new, perfectly parallel approach to simulate cosmic structure formation, based on the spatial COmoving Lagrangian Acceleration (sCOLA) framework. Building upon a hybrid analytical and numerical description of particles' trajectories, sCOLA allows an efficient tiling of a cosmological volume, where the dynamics within each tile is computed independently. I will show that cosmological simulations at the degree of accuracy required for the analysis of the next generation of surveys can be run in drastically reduced wall-clock times and with very low memory requirements, and discuss perspectives for computing future larger and higher-resolution cosmological simulations, taking advantage of a variety of hardware architectures.

Date & Time

April 06, 2020 | 12:30pm – 2:00pm

Location

Until further notice, meetings will be held remotely on Zoom.

Speakers

Florent Leclercq

Affiliation

Imperial College

Notes

Contact Andrina Nicola or <anicola AT princeton.edu> or Marcel Schmittfull <mschmittfull AT ias.edu> for the Zoom link. Organizers are Jo Dunkley, Princeton University, and Matias Zaldarriaga, Institute for Advanced Study.