The massively parallel halo finder MPI-Rockstar, based on the Rockstar (ascl:1210.008) phase-space temporal halo finder, is parallelized in a hybrid way using MPI and OpenMP, thus making it suitable for analysis on the hybrid shared and distributed memory environments of modern supercomputers. The implementation can analyze more than a trillion particles on more than 100,000 parallel processes. MPI-Rockstar also provides new functionality, which includes supporting HDF5 as an output format and output of additional halo properties such as the inertia tensor.

BiHalofit fits the matter bispectrum in the nonlinear regime calibrated by high-resolution cosmological N-body simulations of 41 cold dark matter models around the Planck 2015 best-fit parameters. The parameterization is similar to that in Halofit (ascl:1402.032). The simulation volume is sufficiently large to cover almost all measurable triangle bispectrum configurations in the universe, and the function is calibrated using one-loop perturbation theory at large scales. BiHaloFit predicts the weak-lensing bispectrum and will assist current and future weak-lensing surveys and cosmic microwave background lensing experiments.

The cosmology code DarkEmulator calculates summary statistics of large scale structure constructed as a part of Dark Quest Project. The “dark_emulator” python package enables fast and accurate computations of halo clustering quantities. The code supports the halo mass function, halo-matter cross-correlation, and halo auto-correlation as a function of halo masses, redshift, separations and cosmological models.

Eclairs calculates matter power spectrum based on standard perturbation theory and regularized pertubation theory. The codes are written in C++ with a python wrapper which is designed to be easily combined with MCMC samplers.