ASCL.net

Astrophysics Source Code Library

Making codes discoverable since 1999

ASCL Code Record

[ascl:1304.014] MPgrafic: A parallel MPI version of Grafic-1

MPgrafic is a parallel MPI version of Grafic-1 which can produce large cosmological initial conditions on a cluster without requiring shared memory. The real Fourier transforms are carried in place using fftw while minimizing the amount of used memory (at the expense of performance) in the spirit of Grafic-1. The writing of the output file is also carried in parallel. In addition to the technical parallelization, it provides three extensions over Grafic-1:

  • it can produce power spectra with baryon wiggles (DJ Eisenstein and W. Hu, Ap. J. 496);
  • it has the optional ability to load a lower resolution noise map corresponding to the low frequency component which will fix the larger scale modes of the simulation (extra flag 0/1 at the end of the input process) in the spirit of Grafic-2;
  • it can be used in conjunction with constrfield, which generates initial conditions phases from a list of local constraints on density, tidal field density gradient and velocity.

Code site:
http://www2.iap.fr/users/pichon/mpgrafic.html
Used in:
http://adsabs.harvard.edu/abs/2010AIPC.1241.1202F
Bibcode:
2013ascl.soft04014P

Views: 1204

ascl:1304.014
Add this shield to your page
Copy the above HTML to add this shield to your code's website.