Benjamin L’Huillier


Cosmologist and Astrophysicist, Research Fellow at KASI, Daejeon, South Korea


In this page I will make available some codes that I have written. You can freely use and modify them.


Code to compute the density power spectrum in cosmological simulations. It uses MPI and FFTW-2.15. The code is referenced in ASCL:1403.015.

Other codes

The following codes are available upon request.


Computes the density field (using NGP, CIC, or TSC scheme), and smooth it with a Gaussian kernel. Uses FFTW, MPI-parallel.


Short program to convert from GOTPM to Gadget format.


Short program to convert from Gadget to GOTPM format.